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   Pressure Transmitters and Transducers

P855 Pressure Transducers with Serial(485) Interface
• RS485 Serial interface for digital operation
• Digitally compensated for high accuracy
• Excellent stability over wide thermal range
• 0.1% Full scale accuracy, 0.25% Max temperature error
• Zero, Span set by switches – No potentiometers
• For liquid or gas service
• Full scale ranges from 2.22 inH2O
• NEMA 4 Housing
Data Sheet Instruction Mannual Request



Technical Details

·Digitally Compensated for High Accuracy

·Excellent Stability Over Wide Thermal Range

·0.1% FS Accuracy, 0.25% Max Temperature Error

·Zero, Span Set by Switches - No Potentiometers

·For Liquid or Gas Service

·FS Ranges from 2.22 In H2O

·NEMA 4 Housing


The Validyne model P855 is a high accuracy pressure transducer with a Serial 485 interface. The P855 is designed for a wide variety of low pressure to high 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. O-rings, port holes, electrical wiring are all options standard on our data sheet. The serial port allows remote zero and span adjustments as well as readings in engineering units of pressure and temperature. Now available in 316 SS for sea water and saline solutions and Inconel and Hastelloy for brine and other corrosive media. 

The P855 is Ideal for:

Flow Measurements

Level Measurements

Hydraulic Systems

Vehicle Testing


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