Product Short Description
Product Brief Introduction
Honeywell high-precision process differential pressure sensor transmitter, used to measure pipeline fluid differential pressure, filter blockage pressure difference and tank liquid level pressure difference, with integrated temperature compensation and 4–20 mA analog signal output, suitable for HVAC, petrochemical, water treatment industrial process monitoring.
Description
Complete Technical Specifications
- Pressure Performance Parameters
- Measuring Range: 0 ~ 15 kPa differential pressure full scale
- Accuracy Grade: ±0.25% FS high precision industrial grade
- Signal Output: 4–20 mA two-wire loop current signal
- Process Temperature Compensation Range: -20 °C ~ +85 °C
- Max Overpressure Resistance: 3 times full-scale measuring range without permanent damage
- Electrical & Environmental Data
- Loop Supply Voltage: 12 VDC ~ 36 VDC two-wire power supply
- Protection Grade: IP67 field installation
- Media Compatibility: Air, non-corrosive industrial gas, clean water medium
- Physical Structure
- Process Connection: 1/4 NPT female thread pressure port
- Housing Material: Die-cast aluminum alloy anti-corrosion coating
- Weight: 0.56 kg
Core Function Features
- Built-in digital temperature compensation chip eliminates measurement drift under wide media temperature fluctuation
- Reverse power supply wiring automatic protection circuit
- Field zero and span calibration accessible via external magnetic adjustment tool without housing disassembly
- NC normally closed integrated alarm contact for over-differential pressure interlock output
Working Principle
Dual pressure guiding ports introduce high-side and low-side process pressure to internal silicon piezoresistive sensing diaphragm, diaphragm deformation generates resistance change signal converted to digital value by on-board ASIC chip. Temperature compensation algorithm corrects temperature-induced measurement error, digital signal converted to standard 4–20 mA two-wire loop current proportional to differential pressure value, auxiliary mechanical NC contact triggers closed circuit when pressure difference exceeds preset alarm threshold.
Material Composition & Structural Characteristics
- Pressure Sensing Diaphragm: Stainless steel 316L compatible with most industrial non-corrosive media
- Transmitter Housing: Powder coated aluminum alloy, salt spray resistant
- Cable Entry: IP67 compression cable gland for field wiring
Installation Requirements
- Vertical or horizontal pipeline wall mounting, pressure guiding tube slope ≥ 5° to avoid liquid condensate accumulation inside pressure port
- Separate sensor signal cable from high-power AC motor cables with dedicated wiring duct
- Two-wire loop resistance total not exceed 500 Ω to guarantee stable 4–20 mA signal transmission
Application Scenarios
- Central air conditioning air filter blockage differential pressure monitoring alarm
- Water treatment plant pipeline flow differential pressure measurement
- Petrochemical factory clean gas pipeline pressure difference monitoring
- Building fire smoke ventilation duct pressure differential detection
Operation & Usage Precautions
- Do not apply pressure exceeding 3 times full scale to avoid permanent sensing diaphragm deformation
- Regularly drain condensate liquid from pressure guiding tubes every 3 months to prevent measurement deviation
- Magnetic calibration tool must be used for zero adjustment; metal screwdriver contact will damage internal circuit sealing
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