Welcome to Interface's Video-on-Demand Series.
Today we're to be talking about Interface model 9320 Portable Battery Powered Handheld DDL Indicator.
Interface is based in Scottsdale, Arizona, and we've been here since 1968 making force and torque transducers and the associated instrumentation.
My name is Keith Skidmore and I've been a product manager here at Interface for about 15 years and part of my responsibilities includes supporting our instrumentation product line.
Features of the 9320 include a full seven digit display, dual-range capability with unit labels, an environmentally sealed enclosure, peak, valley, and display hold buttons, a gross/net button, and an impressive forty-five hour battery life.
The available RF-32 option allows easy data logging to any PC with an RF-232 port. Another interesting feature of the 9320 includes the ability to self-calibrate when connected to a TEDS-enabled load cell.
When purchased together with a load cell, the system is set up; otherwise it will be necessary to calibrate the 9320 with your chosen sensor.
If purchased separately, you may have to install the included mating connector on the end of your load cell. The 9320 can be calibrated either by applying a known load or by using values from the load cell calibration certificate.
First the 9320 must be powered on by pressing and holding on the power button. Once on, the calibration mode is entered by pressing and holding the two upper buttons. Once in the calibration menu, the check button is used to confirm a selection, and the X is used to move on.
Sensitivity of 5.0 is correct, so we'll skip that. Set resolution: This is a 50 pound load sell and we want 0.1 pound resolution. The resolution is already set, but if we wanted to change it, we would use the arrow buttons to change and then check to confirm.
Calibrate: Check to confirm. Now it asks if we want to do a live calibration with applied loads or not; and we don't. So we're going to press X. Now it says "Do you want to do a table calibration?" This is where you enter a mV/V value. Say yes to confirm, now it asks for input low. Input low is typically going to be zero; the default is zero. The it asks you for the display low; the default is zero, and that is typically the correct answer.
Now it asks for input high. This is the mV/V value that the capacity of the sensor is listed on the calibration certificate. In this case the load cell has a 3.213 mV/V value. I've already entered that previously, otherwise it is entered using the arrow buttons. Check to confirm. Now display high is the capacity of the load cell; in this case it's 50 pounds. So we'll move over to the correct position and enter five, zero, zero. Then click check to confirm. Now, it says done. That means the calibration is done, hit check to confirm, and we're now ready to go.
You can see its displaying .01 pounds. Hit the net gross button to zero the display, and now we're ready to take a measurement. I mentioned TEDS earlier, but I'd like to expand on that topic. TEDS stands for transducer electronic data sheet. It's a feature where a digital instrument can read a chip installed in the load cell, read the calibration characteristics of the load cell and then self-calibrate. Basically, when you plug in a load cell that has the TEDS chip installed, and the TEDS feature is turned on the meter. When the meter sees the TEDS chip, it finds it and self-calibrates.
Now the real advantage to that is when you have multiple load cells and one meter. Each time you hook up a new load cell all you have to do is allow the TEDS feature to self-scale the indicator, then you're good to go. No complicated calibration procedure necessary.
I'd like to briefly explain the functions of the buttons on the 9320. First off, the power button: pressing and holding this button turns on and off the power. Starting at the top is a range button. This allows you to use two different ranges with the 9320. Pressing the button changes the range. You can calibrate two separate ranges and that second range can be used for either a second load cell or for different units or kilograms.
The hold button, display holds. What that does, is say you are adjusting a piece of equipment and you need to take a reading, you can press the hold button and that holds the display until you press the button again.
The gross/net button is used for zeroing or tare-ing, and it's recoverable so you can tare and un-tare by pressing the button again.
Shunt-cal connects a shunt resistor in the circuit and is handy for checking the setup after the system is calibrated.
The peak button displays the peak value which was last recorded. You can see when the display is flashing, that is when it's in peak mode. Press the peak button again and it's out of peak mode. Same with valley; look at the low reading, then when you push the button, it goes back to current reading.
If you have an questions about this product or others, please contact us at firstname.lastname@example.org or call 1-800-947-5598.