Model APT – Air/Water Pressure Transmitter

The APT pressure transmitter provides accurate linear pressure sensing in ranges from 0 – 1.3 to 0 – 15 PSI. A solid-state piezoresistive silicon element into which a Wheatstone bridge has been diffused offers a high degree of accuracy and long term stability. High resistance burden compensation and 12-98 VDC loop power design allows the APT to be remotely located, several miles from the receiver/source, without degrading accuracy or operation. A unique 12 stage lightning/surge protection circuit, TESCO TRANS-TRAP, may be incorporated to provide optimum circuit protection in harsh environments where lightning protection is a serious concern. Multiple APT’s can be direct panel mounted on 2 inch centers, with front panel adjustments, eliminating the requirement for external transmitter enclosures and costly field wiring.

Applications

  • Reactive AirĀ® and bubbler applications
  • Anywhere continuous air pressure monitoring is needed

Standard Features

  • Ambient compensated 40 – 160 degrees F
  • Current compensated 0 – 4000 ohms
  • High voltage loop power design 12-98 VDC
  • Non-interacting zero and span adjustments
  • Reverse polarity input protection.
  • Corrosion-resistant conformal coating
  • Two to one zero offset
Class: 72-501 – Model APT
Overall Accuracy: 0.25 %
Temperature Range: 0 – 200 degrees F 10
Loop Power: 12 – 98 VDC
Output: 4- 20 mA
Loop Burden at 96 VDC: 4000 ohms
Air Pressure Ranges: 1.3, 5, 10, 15 PSI