Explosion-Proof Differential Pressure Transmitter


The Tek-Bar 3110A Explosion Proof Differential Pressure Transmitters have excellent stability, high accuracy, and include features that facilitate easy installation, start-up, and minimum maintenance thereby lowering process downtime and overall cost of ownership in the long run. These transmitters are equipped with an automatic temperature compensation function integrated into its advanced signal processing circuitry to ensure high reliability and performance corresponding to change of ambient temperature. Tek-Bar 3110A uses a capacitance pressure transducer to measure differential pressure. It is used in level monitoring applications and to measure liquid, gas, and steam flow.

  • Operator can calibrate device using zero/span button, no handheld calibrator required
  • Digital communication HART® protocol
  • Fail-safe mode process function for detecting any abnormal condition occurred
  • High accuracy up to ±0.075%
  • Automatic ambient temperature compensation improves performance of device
  • It can be used as flow meter and should be installed vertically without using additional flanges
  • Various Output: 4-20 mA, digital signals
  • The mounting bracket can be rotated up to 360º and LCD display up to 270º
  • EEPROM write protection 
ServiceCompatible gases, steam or liquids
Wetted MaterialsHastelloy-C Diaphragm
Accuracy±0.075% FS
Rangeability100:1 turn down
Stability±0.2% URL/5yr
Temperature LimitsProcess: -40 °F to 248 °F (-40 °C to 120 °C)
 Ambient: Without LCD -40 °F to 185 °F (-40 °C to 85 °C)
With LCD -22 °F to 176 °F (-30 °C to 80 °C)
Maximum Working Pressure Limit300 PSI
Thermal Effect±0.125% span/32°C
Power Requirements11.9 VDC to 45 VDC
Output Signal4 mA to 20 with HART®
Response Time0.12 s
Loop ResistanceOperation: 0 to 1500 Ω
 HART® Communication: 250 to 500 Ω
Electrical ConnectionTwo ½” female NPT conduit, screw terminal
Process Connections¼” female NPT
DisplayOptional 5 digit LCD
Enclosure RatingNEMA 4X (IP66) and explosion proof for Class I, Div I
Weight8.8 lb (4.0 kg)
Agency ApprovalsFM (Class I Div I)


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