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3400 Intrinsically Safe Load Cells

ATEX Approved Products

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3400 Intrinsically Safe Load Cells
 
  • Stainless steel construction
  • Sealed connector
  • IP68 environmental protection
  • Internally amplified 4-20 mA output,  loop-powered
  • Unipolar (T or C) or bipolar (T and C)
  • Zero and span adjustment access
  • CE certified
  • Explosion protection by Intrinsic Safety per ATEX designation: II 2 G Ex ib IIC T4

Specially designed load cells with loop-powered intrinsically safe amplified output for use in oil field and other hazardous locations. These load cells are derived from other proven Interface models by adding high resistance strain gages for lowcurrent loop power and shielded internal amplifier for extra low emissions and minimal EMI susceptibility.

Model 3400 Intrinsically Safe Load Cell
The Model 3400 is a family of load cells of various mechanical configurations, all with the same internal 4–20 mA loop-powered amplifier and 4000-5000 ohm strain gage bridge. All load cells in the family are intrinsically safe when installed per the installation manual and are certified as such by the following Notified Body:

Physikalisch-Technische Bundesanstalt
Intrinsic Safety is an explosion protection technique that ensures that a circuit operating in an explosive atmosphere cannot cause ignition. This is done by limiting the electrical and thermal energy in the load cell. The 3400 protection is for Zone 1 and the ATEX designation is:
II 2 G Ex ib IIC T4
Braunschweig, Germany

Specific Models 3401 through 3499 are unique in being contructed in accordance with the certified circuit. Configurations for mechanical connections and force capacities are created to fit individual applications. The following are representative of specific models.