DifferentialDifferential & Digitally Compensated
High Accuracy Serial Pressure Transducer
The P855 is a digitally compensated differential pressure transmitter designed for industrial pressure measurement applications. The on-board microprocessor provides high accuracy and improved stability in changing thermal environments.
The P855 is designed for a wide variety of low pressure measurements where fast dynamic response, high resistance to vibration and superior signal stability through temperature change is required. The P855 will accept both liquids and gases directly at the sensing diaphragm.
The zero and full-scale outputs are set by switch. No potentiometer adjustments are required to calibrate. A second switch provides 2.5x gain change and this smaller range may be offset to any place within the full range. The P855 has 1/8 inch female NPT pressure connections and measures just 1.5 x 1.5 x 5 inches overall.
The P855 is available in two output configurations: 4-20 mA current sink output and +/-5 VDC output. The 4-20 mA output version is a true two-wire system that will operate over a supply voltage of 9 to 55 Vdc.
Wiring options for the P855 include a six-pin PT02A connector and pigtail leads. A 1/2 inch male NPT conduit thread connection for mounting a junction box is included with the pigtail lead option.
The P855 is Ideal for:
• Flow Measurements
• Level Measurements
• Hydraulic Systems
• Vehicle Testing
- General Specifications
|Ranges||P855D: +/-0.08 psid to +/-3200 psid P855A: 0 - 0.08 psia to 0 - 3200 psia|
|Accuracy||P855D: +/-0.1% FS, includes non-linearity, hysteresis and non-repeatability P855A: +/-0.25% FS, as above|
|Over-Pressure||P855D: 200% FS up to 4000 psi maximum with less than 0.5% FS output shift P855A: 20 psia or 200% FS, whichever is greater, up to 4000 psia maximum, for less than 0.5% zero shift|
|Line Pressure||P855D: 3200 psig maximum, with zero shift less than 1%/Kpsi|
|Operating Temperature||0 to +160 F -40 F to +200 F Optional|
|Temperature Error||+/-0.25% FS Including non-linearity & hysteresis (0 to 160 F)|
|Pressure Media||Liquids & gases compatible with 410 SST and Inconel|
|O-rings||Buna-N Standard, other compounds available|
|Pressure Cavity Volume||4 e-3 cu in, each port|
|Volumetric Displacement||3 e-4 cu in at FS|
|Power Supply||9 to 55 Vdc, unregulated|
|4-20 mA output||4-20 mA|
|DC Voltage Output||+/-5 Vdc @ 0.5 mA|
|Isolated DC Output||+/-5 Vdc @ 0.5 mA|
|Output Noise||2 mVrms|