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Why Choose a Single Point Impact Cell?

A single point impact load cell (SPI) is a sensor that measures the impact force or load accurately applied to the force or weight exerted on a single point. SPI load cells offer precise and reliable measurements of impact forces or loads, making them valuable tools in various industries and applications.

SPI load cells are used in various industries where precise measurement of impact forces or loads at a single point is required. Here are four common use cases:

  • Material Testing: SPI load cells measure the impact resistance and mechanical properties of materials such as metals, plastics, composites, and rubber. These load cells are employed in impact testing machines to accurately measure the force exerted during impact tests, fracture toughness tests, and other mechanical tests on materials. Most product designers heavily rely on material testing for early-stage concepts to final-stage production.
  • Packaging and Filling Machinery: SPI load cells are utilized in packaging and filling machinery to ensure accurate container filling. These load cells measure the force exerted by the product as it is dispensed into containers, allowing precise control of filling volumes and ensuring consistency in product packaging. It is a way to eliminate waste.
  • Industrial Automation and Robotics: SPI load cells play a vital role in industrial automation and robotics applications, where precise force measurement is necessary for tasks such as material handling, assembly, and quality control. These load cells are integrated into robotic grippers, end-effectors, and assembly fixtures to monitor and control the forces exerted during robotic operations, ensuring accurate and reliable performance.

These are just a few examples of the diverse applications of SPI load cells across industries. Their ability to provide precise measurements of impact forces or loads at a single point makes them invaluable tools in various industrial processes and testing procedures.

Although the SPI resembles what is sometimes referred to as weigh pan cells, the single point impact cell was specifically designed to have greater than normal deflection at full scale to provide for the addition of stops to protect the cell against compression overloads. This was necessary because the usual deflection of 0.001 inch to 0.006 inch of most load cells is too small to adjust an external stop to protect the load cell accurately.

NOTE: A weigh pan cell, also known as a weigh module or load cell assembly, is a type of sensor system used for accurately measuring the weight or mass of objects placed on a platform or pan. It typically consists of one or more load cells mounted within a housing or frame structure. See more about SPIs in our Load Cell Field Guide.

SPI Low Capacity Platform Scale Load CellThe SPI Low Capacity Platform Scale Load Cell is designed to be a high-precision platform load cell. This product is compensated for off-center loading and is available in capacities ranging from 3 to 15 lbf (13.34 to 66.72 N).

Interface SPI cells with capacities of 3 lbf, 7.5 lbf, and 15 lbf contain their internal compression overload stop, which is adjusted at the factory to protect the cell up to four times the rated capacity. These cells have an additional bar under the lower surface to provide a mount for the internal compression stop screw.

The center bar, containing the gages, is a bending beam. It is supported by the outer frame containing four thin flexure points, two on the top and two on the bottom, to provide mechanical strength for side and moment loads. This construction provides the superior moment canceling capability of the SPI, which ensures a consistent weight indication anywhere within the weigh pan size limits.

The SPI High Capacity Platform Scale Load Cell is a high-precision sensor. This product is compensated for off-center loading and is available in capacities ranging from 25 to 150 lbf (111.2 to 667.2 N). These SPI load cells can be protected by placing hard stops under the corners of a weigh pan to catch the pan before excessive deflection damages the SPI cell.

Interface’s popular miniature MBI Overload Protected Miniature Beam Load Cell is a compact-sized SPI. The MBI has better resistance to off-axis loads than similar load cells and is fatigue-rated. This product has capacities from 2 to 10 lbf (10 to 50 N).

Reasons Why You Might Choose Single Point Impact Load Cells

  1. Precise Measurements – SPI load cells are designed to measure impact forces or loads exerted on a single point accurately and precisely. This precision is crucial in applications requiring precise force measurement for quality control, safety, or compliance reasons.
  2. Versatility – SPI load cells can be used in various industries, including material testing, impact testing, product durability testing, and process control. Their versatility makes them suitable for diverse applications requiring precise force measurement.
  3. Compact Design – SPI load cells are typically compact and lightweight, making them easily integrated into different systems and applications. Their small form factor allows for flexible installation and minimizes space requirements.
  4. Durability – SPI load cells are often constructed from robust materials such as stainless steel or aluminum, ensuring durability and reliability even in harsh operating environments. They are designed to withstand impact forces, vibrations, and other challenging conditions encountered in industrial settings.
  5. Cost-Effectiveness – Despite their high precision and performance capabilities, SPI load cells are often cost-effective compared to other load cells, making them a cost-efficient solution for many applications.

SPI load cells are often used in industrial settings for applications such as materials testing, impact testing, product durability testing, and quality control processes where the force exerted at a single point needs to be accurately measured. They are also utilized in various machinery and equipment to monitor loads and ensure safe operation. The SPI is popular with universities and test labs due to its precision and ruggedness.

If you are exploring single point impact cells, contact Interface application engineers to see how we can help you with your project or program.

Building Synergy to Accurately Measure OEM Products and Components

Interface thrives on deep collaboration with OEM partners. We control the entire process, from meticulous sensor design to robust packaging, but our true strength lies in the synergy we create with our customers.

Interface’s value to original equipment manufacturers is the diversity of custom-engineered single measurement devices and sensors easily integrated into components or products. Interface OEM Solutions refer to high-volume products manufactured as unique sensors to use in existing hardware, to activate a product, or as a stand-alone measurement component.

We provide various strain-gaged products, engineering services, and design capabilities to support manufacturers with custom solutions that fit their precise requirements.

When is an Interface OEM solution necessary for your product or component?

#1 Accurate Measurement: Interface load cells and transducers allow OEMs to monitor and measure real-time forces applied to their parts and products. The measurement data is crucial for performance monitoring and ensuring components and systems operate within safe and optimal load ranges.

#2 Data Acquisition and Analytics: Interface sensor technologies provide valuable product usage and performance insights. Product designers benefit by understanding user behavior and informing future product development decisions. This data can also be used for predictive maintenance.

#3 Design Optimization: Analyzing real-time force data helps engineers optimize part and product designs. Understanding how forces are distributed and interact within a system helps reduce material usage and component weight without compromising strength. Product engineers must also identify and eliminate stress points to improve durability and longevity.

#4 Safety and Reliability: Monitoring forces enables proactive safety measures, preventing accidents and equipment failures. The sensor data is valuable in preventing damage by stopping operations or triggering alarms when excessive forces are detected during use.

#5 Product and Component Quality Control: Using embedded sensor technologies is important when guaranteeing consistent force-related performance during use.

OEM Solution Definition

Speed meets precision with Interface’s complete control over sensor design. From precision strain gages to stocking and shipping parts, we own every step – allowing us to iterate and tailor our sensors to your needs rapidly. Our dedicated engineers work with OEM partners to seamlessly integrate specific requirements into every sensor, delivering solutions as unique as your vision.

OEM solution development is a collaborative process that will leverage our expertise.  Before we define a measurement solution for your specific OEM requirements, Interface engineers and application experts start with a detailed solution definition process between the OEM team members. We host a series of system-level discussions that drive maximum design, build, and production efficiency.

Top OEM Solution Discovery Questions

  • What is the #1 challenge or problem you are trying to solve?
  • What are you measuring?
  • Where will the sensor be used or placed?
  • Why are you interested in specific measurements?
  • What signal or connectivity is needed?
  • What are the defined measurement ranges and potential loading conditions?
  • How do you best describe the envelope and mechanical integration?
  • What are the environmental conditions and exposures for the product or component?
  • What are the plans for sensor calibration?
  • Are you using relative or absolute measurements?

The Interface measurement products available for creating a unique SKU only available to an OEM include our load cells, miniature load cells and load buttons, load pins, and torque transducers. OEMs can choose from Interface’s depth of sensor solutions for specific force ranges, directions, mounting configurations, and environments, enabling optimal integration into their designs.

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Interface Products Available for Custom OEM Solutions

  • Low and High Capacity LowProfile Load Cells
  • Compression-Only Load Cells
  • Miniature Load Cells
  • S-Type and Beam Load CellsColumn and Rod End Load Cells
  • Load Cell Load Buttons
  • Sealed Load Cells
  • Stainless Steel Load Cells
  • Multi-Axis Sensors
  • Torque Transducers
  • Flange Style Torque Transducers
  • Hex Drive and Square Drive Torque Transducers
  • Load Pins and Load Shackles
  • Load Washers
  • Tension Link Load Cells
  • Instrumentation

For products requiring sensor-based components, use Interface products to measure force, weight, or torque accurately and continuously during use, meet safety requirements and certifications, and ensure product quality.

Get started by sharing your initial requirements with us by going to our OEM solution request or contacting our experts. We are ready to help you with making sensor-enabled products.

ADDITIONAL RESOURCES

Making Products Smarter with Interface OEM Solutions

Interface OEM Solutions Process

OEM Robotic Surgery Force Feedback

OEM Solutions Turning an Active Component into a Sensor

Manufacturing Solutions

Why Product Design Engineers Choose Interface

 

New Interface Multi-Axis Sensor Selection Guide

Interface multi-axis sensors have multiple benefits for test and measurement applications. Beyond providing more data, they consolidate measurement signals and conserve test space.

Interface multi-axis sensors are like other force and torque sensors with strain gage bridges bonded to machined flexures. Each bridge typically defines a measurement axis. Interface offers multiple configurations for 2, 3, or 6-axis options: axial and torque, axial and shear, axial and moment, and all six degrees.

Most force and torque sensors are bidirectional, tension, and compression. Many sensors can be dual or triple-bridge for dedicated or redundant signals. These types of load cells output the same signal and direction of measurement.

Uniquely, multi-axis sensors have additional bridges to provide output signals for varying axes or types of mechanical loading. Interface multi-axis sensors are designed to provide a complete picture of the test article by quantifying reaction loads through the test article on the “non-measure” side.

These specialized load cells are used in various applications across industries, including aerospace, robotics, automotive, and medical device research. These sensors are specifically designed for applications requiring measuring moment and axial loads to determine the center of gravity or misalignment. They are used for tests requiring simultaneous force and torque monitoring, such as bearing test and material test machines, rheometry test machines for rubber testing, or continuous stress testing of equipment like pumps and master key systems. The multi-axis sensor offers better fatigue testing through setup and load verification.

Below is a demonstration using Interface’s 6-Axis Sensor with our BX8 to measure the precise movements of a robotic hand.

For additional information on this type of application, check out Manufacturing: 6-Axis Force Plate Robotic Arm and Using Multi-Axis Sensors to Bring Robotics to Life.

Selecting a Multi-Axis Sensor

To find the suitable multi-axis sensor for your unique requirements, Interface’s latest resource guide is a versatile reference to compare the sensor types, features, capabilities, and options. The Interface Multi-Axis Sensor Selection Guide lets you quickly evaluate the various sensor types based on whether you need a 2-axis, 3-axis, or 6-axis. Reviewing the products based on features and capabilities is easy, including tension and compression, axial torsion, force and torque, side and radial force, compact, temperature compensated, moment compensated, flange mount, or a center through hole.

This new resourceful tool also helps in reviewing various options, including connector protection, connector options, standardized output, TEDS, CANbus, internal shunt cal, custom calibration, multiple bridges, special threads, dual-diaphragm, special temperature range, cable length, and more.

How the Multi-Axis Selection Guide Works

GO TO: Interface Multi-Axis Sensor Selection Guide

STEP ONE: Select the Number Of Axis You Want to Measure

STEP TWO: Identify Multi-Axis Sensor Features And Capabilities

  • Axial Torsion
  • Center Through Hole
  • Compact
  • Flange Mount
  • Force and Torque
  • High Capacity
  • Moment Compensated
  • Side and Radial Force
  • Temperature Compensated
  • Tension and Compression

STEP THREE: Choose the Multi-Axis Sensor Options

  • Active output ±10V
  • Active output ±5V
  • Add a connector to a cable
  • Cable length
  • CANbus
  • Connector options
  • Connector protection
  • Custom calibration
  • Dual diaphragm
  • Integrated speed and angle measurements option
  • Internal Shunt Cal
  • Mating cable assembly
  • Multiple bridges
  • Special temperature range
  • Special threads
  • Special versions on request
  • Speed up to 3000 rpm
  • Standardized output
  • TEDS

Interface a range of resources related to our multi-axis sensors.  Here is a recent webinar that helps give you a background on these sensors and applications and technical tips.

TIP: Find all of the Interface product guides here.

ADDITIONAL RESOURCES

Multi-Axis Sensors Product Brochure

Enhancing Structural Testing with Multi-Axis Load Cells

A Promising Future in Measurement and Analysis Using Multi-Axis Sensors

Mounting Tips for Multi-Axis Sensors

Enhancing Friction Testing with Multi-Axis Sensors

Interface Multi-Axis Sensor Market Research

Dimensions of Multi-Axis Sensors – An Interface-Hosted Forum

Multi-Axis Sensors 101

Better Data and Performance with Interface Multi-Axis Sensors

Brochure: BX8 and 6-Axis

ForceLeaders Summit Arizona

Interface ForceLeaders Summit 2024 in Arizona happens on Tuesday, January 16, Our force measurement solutions engineers and experts will share valuable tips and experience using load cells, torque transducers, multi-axis sensors, and advanced instrumentation. Register to join the live conversation, ask your questions, and learn from industry professionals. The event takes place at ASU SkySong.

Force Measurement Tips Related to Data Acquisition Systems

A data acquisition (DAQ) system consists of hardware and software components designed to collect, process, and analyze data from various sources and convert it into digital format for further analysis and storage. Based on the growing requirements to gather more data faster, Interface continues to add to our line of data acquisition systems to use with our load cells, torque transducers, and multi-axis sensors. These systems are designed for comprehensive force and torque measurement data collection and analysis.

Is more data, with easy integration and high accuracy, your objective? Working with our team of application engineers, we can assist you in pairing the best data acquisition system with your specific transducers. Considering the options, our team of experts offers these five essential bits of advice.

Data Acquisition Systems Tips for Test & Measurement

Select the Right Data Acquisition System

Choosing a data acquisition system compatible with your specific force measurement devices and application requirements is crucial. Consider factors such as sensor type, measurement range, accuracy, resolution, sampling rate (considering your over-sampling requirements), and connectivity options. In addition, the size and form factors can be critical to an application.

Proper Sensor Installation and Calibration

Proper sensor installation and calibration are critical for accurate force measurements. Follow the guidelines for sensor installation, including correct mounting, alignment, and wiring. Ensure that the load cell is calibrated according to established procedures and standards and that the calibration is regularly verified to maintain measurement accuracy. Proper sensor installation and calibration help eliminate potential sources of measurement errors.

Signal Conditioning and Filtering

Signal conditioning and filtering techniques are essential for optimizing the quality of the acquired force data. Signal conditioning involves amplification, offsets (zeroing), filtering, and linearization of the sensor output signal. Filtering techniques, such as anti-aliasing filters, IIR, or FIR, can help reduce noise and unwanted signals, ensuring accurate and reliable force measurements.

Data Validation and Analysis

Implement data validation techniques, such as range checking, outlier detection, and data integrity checks, to identify and correct potential data errors or anomalies. Analyze the acquired data using appropriate statistical and data analysis techniques to extract meaningful insights and make informed decisions based on the force measurement data. Be sure to select a force measurement device that is highly accurate and of superior quality.

System Maintenance and Calibration

Regular system maintenance, including sensor calibration and system validation, is crucial for reliable and accurate force measurements. Follow Interface’s recommendations for system maintenance, including sensor cleaning, inspection, and calibration intervals. Regular calibration and validation of the data acquisition system and force measurement devices help ensure the system remains accurate and reliable.

For additional information about Interface data acquisition solutions, watch the Unlocking the Power of DAQ webinar.

Popular Interface Data Acquisition Instruments

BX8 Data Acquisition Series

BX8-AS BlueDAQ Series Data Acquisition System with Industrial Enclosure

BX8-HD15 BlueDAQ Series Data Acquisition System for Discreet Sensors with Lab Enclosure

BX8-HD44 BlueDAQ Series Data Acquisition System for Multi-Axis Sensors with Lab Enclosure

Features & Benefits

  • 8-Channel synchronized sampling + TWO encoder/pulse channels
  • Strain gage, mV/V, ±10VDC, and PT1000 temperature inputs
  • Internal calculation of axis load values for 6-axis sensors
  • Active scaling of analog outputs according to internal calculations
  • ±5V, ±10V, 4-20mA, and 0-20 mA outputs
  • 48K samples/sec/channel, 24-bit internal resolution
  • USB connection to PC, Includes graphing and logging software
  • Excitation sense
  • Strain gage Full, 1/2, and 1/4 bridge, including bridge completion
  • TEDS compatible, ZERO button for 8-channel simultaneous tare, 16 digital I/O
  • Galvanic isolation: Analog input, analog output, digital I/O, USB
  • EtherCAT and CANbus/CANopen options
  • Enclosure Options

BSC4 Digital DAQ Model

BSC4D Multi-Channel Digital PC Interface and Data Acquisition Instrument

Features & Benefits

  • USB outputs
  • Four independent channels
  • For use with model 3AXX series 3-axis load cells
  • It can be used with up to any four standard load cells (with mV/V output)
  • mV/V, +/-5V, +/-10V, PT1000
  • Strain gage quarter/half and full bridges
  • 120, 350 & 1000 Ohm bridge completion
  • Limit frequency 450 Hz
  • Eight digital inputs/outputs

Use Cases for Data Acquisition Systems in Test & Measurement

Robotic Surgery Force Feedback using DAQ System

A biomechanical medical company wants to test its robotic arm’s force, torque, and tactile feedback for invasive surgery. The robotic arm mirrors the surgeon’s movements during surgery, and all haptic force feedback must be measured to ensure safety during invasive surgery. Several of Interface’s force and torque measurement products have been used on this robotic arm, including the ConvexBT Load Button Load Cell, SMTM Micro S-Type Load Cell, and the MRTP Miniature Overload Protected Flange Style Reaction Torque Transducer. Force results are collected when connected to the BX8 8-Channel Data Acquisition and Amplifier and viewed when attached to the laptop.

Material Tensile Testing using Data Acquisition Instrumentation

A customer wants to conduct a tensile force test on different samples and materials until failure. Materials include plastic, steel, or woven fabric. They want to measure tensile strength, yield strength, and yield stress. Interface’s 1200 Standard Precision LowProfile™ Load Cell is installed into the customer’s test frame. The tensile test is conducted, and force results captured by the load cell and extensometer are synced. These results can be displayed on a PC with supplied software.

Planetary Sample Collecting

As space exploration continues to grow and evolve, more robotic systems are created to collect samples of objects and materials on planetary surfaces. Robotic arms with sampling tools must be tested for scooping, drilling, and collecting samples. Interface’s Model 6A40 6-Axis Load Cell can be installed between the flange and the sample collecting tool. When connected to the BX8-HD44 Data Acquisition, the customer can receive force and torque measurements when connected to their control system using BlueDAQ software. Interface’s 6A40-6 Axis Load Cell could measure all forces and torques (Fx, Fʏ, Fz, Mx, Mʏ, Mz.) The BXB-HD44 Data Acquisition could log, display, and graph measurements while sending scaled analog output signals for these axes to the customer’s robot control system.

Learn more about your DAQ system options using Interface’s Data AQ Packs Guide.

Interface New Product Releases Fall 2023

Interface has added new load cells and instrumentation to our expansive measurement solutions catalog. The Fall 2023 new product releases include several standard products, along with options for engineered to order and custom solutions.

The Interface product line is one of the most extensive in the world of test and measurement. We want to make it easier to navigate models based on your requirements. Interface has a series of guides that can help you choosing the right load cells, miniature load cells, torque transducers, couplings, DAQ systems and instrumentation. Visit our online product selection tools.

ICPA STAINLESS STEEL COMPRESSION LOAD CELL

Interface’s new ICPA compression load cells are built to exacting standards with submersible versions available. The standard product is durable, versatile and easy to integrate into existing machines and equipment. There are several options available in standard capacities and dimensions including domed top (supplied with or without a loading cap), integral carry handles, mounting base, integral connectors and internal analog/digital signal amplifiers. The standard product is constructed from stainless steel and IP-rated. It can be customized to specific requirements. Download the ICPA datasheet.

Primary ICPA features and benefits:

  • Ranges: 2 to 1000 MT (4.4K to 2204K lbf)
  • Stainless steel construction
  • Environmentally sealed to IP67
  • Submersible version available upon request
  • Options: Special electrical connections, integral signal conditioning
  • Model options: Domed top and loading cap, mounting base and handles
  • TEDS (Transducer Electronic Data Sheet) option
  • Custom ranges and sizes available

BSC4D-BT PORTABLE 4-CHANNEL BLUETOOTH DATA LOGGER

Interface’s new BSC4D-BT Portable 4-Channel Bluetooth Data Logger is designed for wireless measurement data acquisition with wire strain gage sensors. It is also suitable for connecting strain gage full bridges and half bridges. For quarter bridges (120 Ohm, 350 Ohm, and 1000 Ohm), there is a connection option in three-wire technology. Data is transmitted by radio via the Bluetooth Standard 2.0+EDR with serial port profile (SPP). The range is 20-meters in buildings or up to 100 m when in direct line of sight. Current consumption is less than 150 mA. When not in use, current consumption is under 10 mA. A battery can be charged at 5V supply voltage via an integrated charge regulator. Download the BSC4D-BT datasheet.

Primary BSC4D-BT Portable 4-Channel Bluetooth Data Logger:

  • IP65 housing with integrated battery
  • Long distance Bluetooth interface
  • 4 channels
  • Inputs for mV/V / 0 – 5 V / PT1000
  • Measuring ranges 2 mV / V / 10 mV / V, mV/V quarter and half-full bridge options
  • 4 digital inputs and outputs
  • Data rate up to 450 Hz

BSC1-HD SINGLE CHANNEL PC INTERFACE MODULE WITH ANALOG OUTPUT

The new Interface BSC1-HD Single Channel PC Interface Module with Analog Output is a single channel signal conditioner with both digital and analog input and output. The BSC1-HD also has optional RS232, RS422, and CANopen protocols.  Download the BSC1-HD datasheet.

Primary BSC1-HD Single Channel Module with Analog Output features and benefits:

  • 24-bit
  • mV/V input (+/-10mV/V) and Analog Input (0-10VDC)
  • Analog Output (standard +/-5V)
  • LCD Display (to 200,000 digits display resolution)
  • Compatible with Interface BlueDAQ Software
  • RS232, RS422 or Optional – CANopen
  • Trigger input
  • Options include: 4-20mA Output, 0-10V Output, CANopen and +/-5V Output

Amplifier channel has a fixed gain settings and is not adjustable for specific load cell output signals. Thus, the amplifier output will typically 0.5V per mV/V of load cell output.

SGA AC/DC POWERED SIGNAL CONDITIONER

Interface versatile SGA Signal Conditioner is now offered as a series. There are eight configurations available for this popular instrumentation product. The SGA features user selectable outputs of ±10V, ±5V, 0-10V, 0-5V, 0-20mA and 4-20ma. This product is DC or AC powered with switch selectable filters from 1 to 5kHz and is packaged in a sealed ABS enclosure. This product supports shunt calibration and a wide range of gain settings. To review all the SGA options, go here.

NEW! 8 SGA Configuration Models Now Available

  1. SGA: Amplifier with no power cord
  2. SGA-WPC: Amplifier with power cord
  3. SGA-RSC: Amplifier with Remote Shunt Calibration option and no power cord
  4. SGA-RSC-WPC: Amplifier with Remote Shunt Calibration option and includes a power cord
  5. SGA-DCI: SGA-D with Isolated Power Supply option and no power cord (DC Power Only). Also allows for 9-36 VDC Supply
  6. SGA-BCM: Amplifier with Bridge Completion option and no power cord
  7. SGA-BCM-WPC: Amplifier with Bridge Completion option and includes power cord
  8. SGA-DRMK: DIN Rail Mounting Kit option for model SGA.

Primary and Optional SGA features and benefits:

  • User selectable analog output ±10V, ±5V, 0-10V, 0-5V, 0-20 mA, 4-20 mA
  • 110 VAC, 220 VAC OR 18-24 VDC power
  • Switch selectable filtering 1 Hz to 5 kHz
  • Single channel powers up to 4 transducers
  • Selectable full scale input range 0.06 to 30 mV/V
  • Switch selectable offset ±70% FS
  • Sealed ABS enclosure
  • Model SGA-RSC can remotely activate a shunt calibration by closing a relay on the related RSC module
  • Model SGA-DCI offers with isolated 12/24V power supply
  • Model SGA-BCM has a bridge completion module for both quarter and half bridges
  • Option: AC Power Cord (PWRCRD-SGA-110)
  • Option: DIN Rail for mounting available by request

4850 BATTERY POWERED BLUETOOTH WEIGHT INDICATOR

The new Interface 4850 Bluetooth Digital Indicator is a wireless capable digital indicator housed in a stainless steel NEMA 4X enclosure. It comes with a large 0.8” LCD display for easy readout of up to 50,000 display divisions and can drive up to 8-350Ω load cells. All setup parameters may be entered via the front panel keys. A full duplex RS-232 port or optional Bluetooth module can transmit data on demand or continuously to match the input requirements of a wide variety of peripheral devices including printers, remote displays and computers. This is a high quality instrumentation solution with Bluetooth capabilities. Review the 4850 weight indicator specifications here.

Primary 4850 Digital Indicator features and benefits:

  • Full front panel configuration
  • Drives up to eight 350 ω load cells
  • Full front panel calibration, multipoint cal – linearization
  • Units- lb, kg, g, and oz
  • Stainless steel swivel stands and enclosure
  • Easy to read LCD display with up to 50,000 graduations
  • Power requirements – 4-14 vdc
  • Battery is 6-volt 3 ah internal rechargeable lead acid
  • Options for analog output: 16-Bit, 0-5 VDC, 4-20 mA and built-in relays (6V or 12V)

Beyond our standard load cells, transducers, and instrumentation, we also offer options for engineered to order, OEM sensors, and complete custom systems. If you need any assistance in selecting the right products for your test and measurement applications, please contact us.  If you have questions about these new products, capacities, capabilities, or specifications, we are here to help.

ADDITIONAL PRODUCT RESOURCES

Bending Beam Load Cell Basics

Bending beam load cells are a versatile and cost-effective solution for many weighing and force measurement applications. These types of miniature load cells are small in dimension, which makes them ideal solutions for compact testing environments and for embedding into machines or products for continuous performance measurement.

The use of bending beam load cells expands across industries and applications, for weighing scales, medical devices, industrial process controls, robotic designs, packaging machinery and civil engineering projects.

How Bending Beam Load Cells Work

A bending beam load cell converts a force applied to it into an electrical signal by measuring the flexure of the beam. This is done by attaching strain gages to the beam. When the beam bends, the strain gages change their resistance, which is then converted into an electrical signal by a Wheatstone bridge circuit. The output signal is proportional to the applied load.

The bending beam load cell is bolted to a support through the two mounting holes. Under the covers, you can see the large hole bored through the beam. This forms thin sections at the top and bottom surface, which concentrate the forces into the area where Interface’s proprietary strain gages are mounted on the top and bottom faces of the beam. The gages may be mounted on the outside surface, as shown, or inside the large hole.

The compression load is applied at the end opposite from the two mounting holes, usually onto a load button that the user inserts in the loading hole.

MB Miniature Beam Load Cell

MB MINI BEAM LOAD CELL

The Interface Model MB is a miniature beam load cell used in test machines and a variety of low capacity applications.

  • Standard Capacities are 5 to 250 lbf (22.2 N to 1.11 kN)
  • Proprietary Interface temperature compensated strain gages
  • Performance to 0.03%
  • Low height – 0.99 in (25.1 mm)
  • Eccentric load compensated
  • ±0.0008% /˚F – max temperature effect on output
  • Low deflection

MBI Overload Protected Miniature Beam Load Cell

Interface’s Model MBI Overload Protected Miniature Beam Load Cell has better resistance to off-axis loads then other similar load cells and is fatigue rated.

  • Standard capacities from 2 to 10 lbf (10 to 50 N)
  • Proprietary Interface temperature compensated strain gages
  • Performance to 0.03%
  • Low height – 1in max
  • ±0.0008% /˚F – max temperature effect on output
  • 10x overload protection

MBP Overload Protected Miniature Beam Load Cell

Our Model MBP series Mini load cells provide a similar performance to Model MB series with the added safeguard of internal overload protection. This patented overload protection is accomplished via hard stops that are EDM machined into the load cell flexure. This provides a greater overload protection (2.5-10lbf ±1000% of full scale capacity, 100 N ±500% of full scale capacity), giving the user added protection in more severe applications.

  • Standard capacities from 2 to 10 lbf (10 to 50 N)
  • Proprietary Interface temperature compensated strain gages
  • 10x overload protection
  • Low height – 0.99 in (25.1 mm)
  • ±0.0008% /˚F temp. effect on output
  • 5′ Integral Cable (custom lengths available upon request)
  • NIST Traceable Calibration Certificate

MBS Parallelogram Load Cell

The Interface MBS Parallelogram load cell is made of lightweight aluminum construction and highly suitable for medical and robotics applications.

  • Capacities from 2.2 to 10 lbf (9.8 to 44.5 N)
  • Lightweight
  • Nonlinearity error 0.02% FS
  • Ideal for OEM applications

Double Bending Beam Cells

A very useful variation on the bending beam design is achieved by forming two bending beams into one cell. This allows the loading fixtures to be attached at the threaded holes on the center line, between the beams, which makes the sensitive axis pass through the cell on a single line of action.

Bending Beam Load Cell Applications

Material testing is a common application for bending beam load cells. This type of miniature load cell measures the forces applied to materials with a high degree of accuracy to determine stiffness, strength and durability of the specimen.

It is quite common to find bending beam load cells in industrial automation machines and robots to precisely measure the forces required for control, safety and efficiency. In robotics specifically, bending beam load cells will measure the force applied to the robot’s arms and grippers. The data is used to control the robot’s movements and to ensure that it is not damaging the objects it is handling.

Aerospace engineering have long used bending beam load cells in design, testing and manufacturing of aircraft and spacecraft. Automotive engineering use bending beam load cells to design and test vehicles for safety and reliability.

Due to Interface’s ability to custom design bending beam solutions that meet strict size, capacity and accuracy requirements, our products are commonly used in medical and healthcare applications.

Bending Beam Application for Medical Device Testing

In this application, the medical device product lab needs to apply known forces to stent and catheters to ensure they pass all necessary strength and flexibility testing. MBP Overload Protected Beam Miniature Load Cell is placed behind the guide wire for the stent or catheter. The motor will spin the linear drive, push the load cell, and guide the wire through the testing maze. The bending beam load cell connects to the DIG-USB PC Interface Module to record and store testing data for analysis. Read more.

Bending Beam Application for Vertical Farming

Vertical farming is the production of produce in a vertical manner using smart technology systems, while indoors using an irrigation system. A wireless force measurement solution is needed to monitor the amount of water being used, to ensure the produce is being watered just the right amount. Interface suggests installing four MBI Overload Protected Miniature Beam Load Cells under each corner of the trays of the produce to accurate measure the weight during watering. A JB104SS 4-Channel Stainless Steel Junction Box connects to each bending beam cell and to a WTS-AM-1E acquisition module. The device wirelessly transmits the sum weight to the WTS-BS-1-HA Wireless Handheld Display for multiple transmitters, and the WTS-BS-6 Wireless Telemetry Dongle Base Station. Interface’s Wireless Telemetry System monitored and weighed the amount of water being used on the produce in this vertical farming system to increase yield and conversation. Read more here.

Additional Resources

How Do Load Cells Work?

The Basics Of Shear And Bending Beams

Interface Mini™ Load Cell Selection Guide

Introducing Interface Load Cell Selection Guides

The Anatomy Of A Load Cell

Mini Load Cells 101

Load Cell 101 And What You Need To Know

Load Cell Test Stands 101

Load cell test stands are important devices for manufacturers and testing engineers who need to measure the force or torque applied to an object, test specimen, or product. They are typically made up of a frame, one or more load cells, software, and data acquisition instrumentation.

How do load cell test stands work?

Interface load cells are sensors that convert force into an electrical signal. This signal is then amplified and sent to the test stand’s software, which displays and records the force data. The software can also be used to control the test stand, such as setting the speed and duration of a test.

Test stands are used to hold the test object or device and apply force or torque to it. They should be designed to provide a stable and consistent testing environment. It is typically designed to accommodate a wide range of objects of different sizes and shapes. Often a reconfigurable structure to adapt from test to test.

Test stands may have various components, such as a base or base plate, columns, a crosshead, and load introduction devices. Interface provides high-accuracy load cells, instrumentation and DAQ systems, software and accessories designed for use in various types of test stands.

What are the different types of load cell test stands?

There are two main types of load cell test stands: motorized and manual. Motorized test stands are more advanced and can be used for more demanding testing applications. They typically have features such as programmable speed and force control, as well as data logging capabilities. Manual test stands are less expensive and easier to use, but they are not as versatile as motorized test stands.

A test stand and a load frame are both mechanical structures used in materials testing, but they differ in their functions and designs.

The test stand can be a test bench or structure on a test bed plate. These assemblies are designed to rigidly hold an object while it is being subjected to external forces. These forces could be introduced from all angles and orientations and cover low cycle design limit to long duration fatigue cycle testing.

A load frame, on the other hand, is a machine that is specifically designed to apply and measure axial or torsion forces during material or small component testing.

Most Common Requirements for Load Cell Test Stands

Testing professionals, engineers and metrologists require a load cell test stand to perform accurate and precise measurements. The primary features of a test stand include:

  • High accuracy: The load cell test stand must be able to measure force or torque with a high degree of accuracy. This is important to ensure that the measurements are reliable and repeatable. Confidence in the data must be validated through accuracy of measurement.
  • Versatility: The load cell test stand must be able to be used for a variety of testing applications. Test lab professionals, engineers and metrologists need equipment that can perform a wide range of product and material tests. This also includes interchangeable sensors, depending on the capacity and type of test, such as tension or fatigue.
  • Repeatability: The load cell test stand must be able to repeat measurements with high precision. This is important to verify the accuracy of measurements over time, through continuous use and even high cycle counts.
  • Safety: The load cell test stand must be safe to use, even when testing products under high loads. Measurements are not compromised by safety concerns.
  • Ease of use: The load cell test stand must be easy to use, even for users with limited technical knowledge. This is important for testing professionals to be able to quickly and easily set up and use the test stand.

Load cell test stand requirements can vary based on the type of testing projects and materials. Many test stands are standard; however, complex testing programs often require custom test stands that are designed and calibrated for specific use cases. Interface provide load cells, instrumentation and software designed for use in test stands.

Test Stand Sensor Considerations

  • Ensure sensors are properly sized for capacity, cycle, and extraneous load considerations.
  • Multiple bridges are good feature for redundancy and data validation.
  • Thread adapters and connector protectors must be considered in choosing the sensor for a specific test stand application.
  • Multi-axis data capture often requires robust instrumentation to take full advantage of the data.
  • Invest in versatility and ruggedness to maximize return.

Additional Test Stand Options

  • Programmable speed and force controllers help to regulate the rate at which the load is applied to the product, as well as the maximum force that can be applied during a given test period or cycle.
  • Data logging instrumentation records the force data for each test. This data can then be used to analyze the results of the test and to make sure that the product meets the required specifications.
  • Remote monitoring and controls help with test stand use from a remote location. This can be useful to run tests without being physically present at the test stand.

There are many different types of load cell test stands, so it is important to choose one that is right for your specific needs. When selecting or building a load cell test stand, consider the weight or force that you need to measure, the accuracy and precision, the environment in which the test stand will be used and the equipment budget.  This is a topic we detailed in our Testing Lab Essentials Webinar. Watch this portion of the online technical seminar below.

Load Cell Test Stand Use Cases and Applications

  • Aerospace test stands are used to measure the strength of aircraft structures. Test stands are used to test the performance and durability of aircraft components, such as wings, fuselages, and engines. They are also used to test the structural integrity of aircraft materials, such as composites and metals.
  • Material test stands can be used to exam the strength, stiffness, and toughness of materials.
  • Structural test stands are used for small capacity testing, as well as large amounts of force to measure the structural integrity of buildings, bridges, and other formations.
  • Dynamic test stands are used to measure the performance of products under different environmental conditions, such as shock and vibration testing.
  • Medical manufacturers need to test the performance of medical devices. Test stands are used to test the performance and durability of medical devices, such as pacemakers and defibrillators. They are also used to test the accuracy of medical instruments and in-home medical equipment, as the safety of user is paramount to all other requirements.
  • Automotive labs use test the performance of engines, transmissions, brakes and other components. They are also used to test the durability of automotive materials, such as tires and plastics.
  • Consumer product manufacturers and OEMs must test the durability to ensure customer satisfaction and reliability of the product. Test stands are used in testing toys, appliances, tools, and electronic devices.
  • Industrial automation component makers and OEMs must test the strength of machine parts and materials used in product lines, machine tools, and robots. They are also used to test the safety of industrial equipment, such as forklifts and cranes.

Load cell test stands are an essential tool to accurately measure the forces acting on a test specimen. By using a load cell test stand, testing engineers can ensure that their equipment is operating within its design limits and that it is safe to use. If you have questions about building or upgrading your test stand, be sure to consult with our application engineers.

How Load Cells Are Transforming the Construction Industry

The construction industry is one the most universal, growing, and dangerous industries in the world. Interface force measurement solutions are used for all types of construction applications from bridge and high-rise building projects to foundation load tests and structural monitoring. Our sensors and instrumentation are used in crane and heavy lifting operations, material testing and equipment calibration.

Accuracy and quality of all measurement products used for design, testing, monitoring, and equipment evaluations is imperative in protecting the project’s assets and workers. One of the leading causes of construction accidents is overloading equipment. When equipment is overloaded, it can fail, leading to serious injuries. It is essential to utilize high accuracy load cell technologies to measure the amount of force being applied to construction equipment.

Interface force measurement solutions can help to prevent overloading accidents by using the measurement data to ensure that equipment is not being extended beyond its safety capabilities. Force measurement solutions can also be used to monitor the performance of equipment and identify potential problems before they lead to an accident.

Interface offers a wide variety of sensor solutions for construction equipment and material testing. Our load cells offer precise measurements of applied forces, furnishing essential data regarding the structural response under various load circumstances. This data plays a critical role in evaluating structural integrity, detecting potential vulnerabilities, and optimizing design to guarantee the safety and dependability of infrastructure.

Interface force measurement solutions can help to improve efficiency and productivity in the construction industry in all areas including engineering, testing and maintenance. By monitoring the performance of equipment, construction companies can identify areas where they can improve efficiency.

It is common to find Interface load cells, including load pins, load shackles, miniature and even jumbo load cells in use for various forms of construction projects, equipment and tools. These products, as well as torque transducers, instrumentation and wireless systems are frequently used in the testing and monitoring of the machinery, rigging and lifting devices, gear, and heavy duty vehicles that are used in various stages of building.

Interface provides various sensors for a range of construction use cases around the world, including:

  • Residential and commercial buildings
  • Infrastructure programs
  • Industrial construction
  • Material testing machines
  • Civil engineering projects
  • Mining and tunneling
  • Environmental remediation
  • Heavy equipment manufacturing
  • Vehicle OEMS
  • Cranes and lifting equipment


Construction is an ever-present and ever-growing industry estimated to reach nearly $13T in global spending with broad and diverse use of measurement solutions. From single dwelling construction tools to heavy machines used to move concrete slabs, measurement is fundamental in construction. Included below we have provided a few examples of how our sensors are being used in construction.

Construction Reach Stacker

A reach stacker is a vehicle used in construction site to lift, move, and stack heavy containers. A force monitoring system was needed to ensure the safety of surrounding personnel, and if the reach stacker can lift heavy loads. Interface’s WTSLP Wireless Stainless Steel Load Pins were installed into the corners of the lifting mechanism of the reach stacker, where heavy loaded containers are lifted and moved. The force results were then wirelessly transmitted to both the WTS-BS-1-HS Wireless Handheld Display for Single Transmitters, or directly to the customer’s PC with the WTS-BS-6 Wireless Telemetry Dongle Base Station. Using this solution, the customer was able to monitor their reach stacker with Interface’s Wireless Telemetry System and ensure its ability to lift heavy loads on site.

Bridge Construction Wind Monitoring

Wind monitoring is a necessary operation during bridge constructions. Strong winds can destroy a bridge under construction since it is a work in progress with poor structural design. Monitoring these winds in real time is much more accurate than using predicted weather forecasts. Interface suggested installing the WTS-WSS Wireless Wind Speed Transmitter Module on the highest point of construction, such as a crane. Wind speed results were wirelessly transmitted to the customer’s PC through WTS-BS-4 Wireless Base Station with USB Interface in Industrial Enclosure. It was transmitted to the WTS-BS-1 Wireless Handheld Display for Unlimited Transmitters Data can be displayed, logged, and graphed with supplied Log100 software. Interface’s WTS-WSS Wireless Wind Speed Transmitter Module combined with Interface’s Wireless Telemetry System was perfect to monitor the wind speed in real-time during the bridge’s construction.

Metal Bending Force Material Testing for Construction

A construction material supplier wanted to know how much force it takes to bend different grades of steel metal used for building and infrastructure projects. They use their metal bending machine to create different metal hardware and wanted to record the amounts of force it takes to bend the metal used for their projects. Interface suggested using a wireless method, so cables do not interfere with the machine. The WTS 1200 Standard Precision LowProfile® Wireless Load Cell was attached to the head of the hydraulic operated steel bender. Results were wirelessly transmit to the customers PC through the WTS-BS-4 Wireless Base Station with USB Interface, where data can be displayed, logged, and graphed with supplied Log100 software. Using this solution, the customer was able to record the force results of his metal bending machine with Interface’s Wireless Telemetry System.

Interface is adept at providing solutions suited for use in construction projects, equipment and ongoing monitoring programs.  If you have questions about what products are suited for your specific project, equipment or testing programs, contact us. We are here to help.

ADDITIONAL RESOURCES

Force Measurement Solutions for the Construction Industry

Interface Solutions for Heavy Equipment

Gantry Crane Weighing

Lifting Heavy Objects

Rigging Engineers Choose Interface Measurement Solutions

Innovative Interface Lifting Solutions

Modernizing Infrastructure with Interface Sensor Technologies

Interface Solutions for Structural Testing

Why Civil Engineers Prefer Interface Products

Innovative Interface Load Pin Applications