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Level Transmitters

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868 Series Differential Pressure Sensor Control Level Transmitter

  • 4 mA to 20 mA output for broad compatibility
  • Better than ±0.02% span repeatability
  • Piezoresistive technology for enhanced stability
  • Also offered in hybrid versions combined with an air flow control for pneumatic sensors or downpipe (bubbler) systems

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SERIES 868 D/P Sensor Control (Air Flow Control)
FITINGS 19 None, 1/4” NPT 39 Polyflo; (4) 1/4” tube 49 Swagelok; (4) 1/4" tube
(compatible with copper or poly tubing)
MILLIAMP OUTPUT 108 4 mAdc to 20 mAdc 0-5 psid 128 4 mAdc to 20 mAdc 0-15 psid 148 4 mAdc to 20 mAdc 0-50 psid
118 4 mAdc to 20 mAdc 0-10 psid 138 4 mAdc to 20 mAdc 0-30 psid 168 4 mAdc to 20 mAdc 0-2 psid

NOTE: Unit includes (1) water-resistant Hubbell cord grip.

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Output signal 4 mAdc to 20 mAdc (milliamperes)
Accuracy ±0.2% FS (±0.10% F.S., typical) includes non-linearity, hysteresis and non-repeatability
Repeatability ±0.20% of calibrated span
Temperature range 0 °F to 180 °F/-18 °C to 82 °C
Compensated temperature range 32 °F to 120 °F/ 0 °C to 54 °C
Thermal effects (over
compensated temperature range)
Less than .007% °F (.011% °C) span shift—sensitivity
Less than .007% °F (.011% °C) span shift—zero
Power requirement* 14 Vdc to 40 Vdc
Power supply stability
(effect on FSO)
Less than .005% of span change in output per volt change at input terminals
Burst pressure 200 psi
Combined accuracy** 0–5 psid trans./control
0–10 psid trans./control
0–15 psid trans./control
0–30 psid trans./control
0–50 psid trans./control
±0.34% full scale
±0.27% full scale
±0.24% full scale
±0.22% full scale
±0.21% full scale
Compressed air requirement 35 psid to 150 psig supply pressure at control inlet
Maximum depth measurement 1,937 inH2O (49.0 m water)

* Unregulated
** Combined accuracy refers to the primary accuracy of the sensor in combination with the secondary accuracy of the D/P transmitter.

Options & Accessories

7333-10 Replacement filter element
7334-2 SafeGard service kit
7334-9 Air control section kit
7879-20 Vent generator
9316-4 O-ring for D/P top plate (868)

    
        
        
        
        

WARNING: This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov