Sanitary Gauge Pressure Transmitter


Tek-Bar 3120C Sanitary Gauge Pressure Transmitter uses the world’s advance silicon pressure sensor technology and state of the art encapsulation technology. This is a high performance pressure transmitter with HART communication protocol and is used to measure gauge pressure. It is used to measure liquid, gas, or steam flow as well as liquid level and density of medium. It has a high accuracy of up to 0.2% of URL and has IP66 water-proof protection.

The Tri-Clamp Gauge Pressure Transmitter works on the principle of mono silicon technology. The pressure sensor of the transmitter is located on the top of the metal body, away from the service fluid. This enables mechanical and thermal isolation of the sensor from the fluid in service. When pressure is applied on the diaphragm and the silicon piezoelectric sensor, they become stressed and under go a change in voltage resistance. This change in resistance is directly proportional to the applied pressure, which is transferred to the transmitter body using lead wires.

  • Digital communication HART protocol
  • High accuracy up to ±0.2%
  • Various Output: 4-20 mA, digital signals with HART®️ Communication (Modbus RS485)
  • Multiple temperature and linearity compensation to improve accuracy
  • Fully-sealed and fully isolated silicon pressure sensor
  • Superior stainless steel process flange
  • Dual diaphragm overload protection, can easily cope with overload tests
  • 355° rotation display module
Process Medium Compatible gases, steam and liquids
Pressure Type Gauge Pressure
Process Connection 1-½” Tri-Clamp or 2″ Tri-Clamp
Wetted Materials 316L SS
Ranges 5.8 psig to 300 psig
Accuracy ±0.2% F.S.
Stability ±0.2% URL/5 years
Working Temperature -40 °F to 185 °F (-40 °C to 85 °C)
Insulation Resistance ≥20 M Ω at 100 VDC
Mounting Position Effect Apply to any position. Max value lower than 1.6 w.c. (400 Pa) can be corrected by zero clearing function
Working Humidity 5-100% RH
Net Weight Approx 3.43 lbs (1.55 Kg)
Protection class NEMA 4X(IP66)
Output Signal 4 mA to 20 mA with HART (Optional Modbus RS485)
Standard/flame proof 10.5-55 VDC
Load resistance 0-2119 Ω for working condition, 250- 600 Ω for HART protocol
Max. Transmission distance 3281 ft
Power consumption ≤500 mW at 24 VDC, 20.8 mA

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