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I/O SYSTEMS – S800 I/O – AI835A

The AI835/AI835A provides 8 differential input channels for Thermocouple/mV measurements. Measurement ranges configurable per channel are: -30 mV to +75 mV linear, or TC Types B, C, E, J, K, N, R, S and T, for AI835A also D, L and U.

One of the channels (Channel 8) may be configured for “Cold Junction” (ambient) temperature measurements, thus serving as CJ-channel for Ch. 1…7. The junction temperature may be measured locally on the MTUs screw terminals, or on a connection unit distant form the device.

Alternatively, a fix junction temperature for the module may be set by the user (as parameter) or for AI835A also from the application. Channel 8 may be used in the same manner as Ch. 1…7 when no CJ-temperature measurement is needed.

Features and Benefits

  • 8 differential input channels for thermocouple/mV.
  • Channel 8 can be designated as the CJ-channel (4-wire Pt100 RTD)
  • Variety of thermocouples with the following characteristics: B, C, E, J, K, N, R, S and T for AI835A also D, L and U
  • 15 Bit resolution (A/D)
  • Inputs are monitored for wire-break open-circuit
Article number 3BSE051306R1
Type Analog Input
Signal specification -30..75 mV linear; TC types B, C, D, E, J, K, L, N, R, S, T and U
Number of channels 8
Signal type See table in S800 Modules and Termination Units, 3BSE020924
HART No
SOE No
Redundancy No
High integrity No
Intrinsic safety No
Mechanics S800

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satis@gest.com.tr

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