The Active Thermocouple (ATC-E) gauges mount directly on either the ATC-D or ATC-M thermocouple tubes to form a compact, stand-alone transducer.

The ATC-E electronics module drives both medium and low pressure gauge tubes. These gauges offer a cost effective measuring solution for higher pressures.

Features and Benefits

  • Drive electronics mount directly on the gauge tube which simplifies the system design and saves valuable rack space
  • Wide range, regulated, internal power supply runs from standard d.c. power supplies from +13.5 to +36 V and is tolerant to voltage fluctuations
  • Standard analogue outputs of 0 to +10 V d.c. and gauge identifier allows for easy interface with a computer or PLC and provides fault output indication
  • Adjustable set-point with vacuum status LED can be used for process control and interlocking and includes a digital vacuum status signal with set-point level ready visually
  • Low output impedance and integral Faraday shield provides a high level of noise immunity and permits long cable runs of up to 100 meters
  • Choice of medium and low pressure gauge tubes. The ATC-D covers from 50 to 5 x 10-2 Torr while the ATC-M covers from 1 to 10-3 Torr


  • Active thermocouple gauges are ideally suited to applications where a simple rugged gauge is required to measure higher pressures.
Technical data  
Power supply +13.5 to +36 V d.c. (max 1 V ripple)
Power consumption 0.54W maximum
Output signal  
Operating 2 to 10 V d.c.
Fault output 0 to 2 V d.c., 10 to 13.5 V d.c.
Output impedance 0.1 ohms
Minimum load 10 k ohms
Adjustments Adjust set point visually via potentiometer
Set point Open collector transistor
Settable range 2.2 to 8.5V
Fixed hysteresis 1.2V
Level setting ±2 full scale voltage
Rating 40 V d.c., 100 mA maximum
Total weight: electronics and module 120 g
Pressure range when used with ATC module  
ATC-D 50 to 5 x 10-2 Torr
  65 to 6.5 x 10-2 mbar
ATC-M 1 to 1 x 10-3 Torr
  1.3 to 1.3 x 10-3 mbar
Maximum internal overpressure  
ATC-D 10.3 bar absolute
ATC-M 3.4 bar absolute
ATC-D 0.82 cm3
ATC-M 8.2 cm3