Foxboro P0924JH Smart Differential Pressure Transmitter

Product Series: P0924 Series — Differential Pressure / Level / Flow Transmitter

Product Introduction:
The Foxboro P0924JH is a smart differential pressure transmitter from the P0924 series, configured for medium-range differential pressure measurement. It is widely used for level measurement in tanks and vessels, flow measurement using orifice plates, and general differential pressure monitoring. It features HART 5/7 communication and silicon resonant sensing.

Category:
Description

Model Designation Breakdown:

  • P0924 = Differential Pressure Transmitter Series
  • JH = Range Code: 0–500 inH2O (0–1246 mbar)
  • Process Connection: 1/2 NPT Male (Bottom Mount)

Technical Specifications:

Parameter Value
Measurement Type Differential Pressure
Range 0 – 500 inH2O (0 – 1246 mbar / 0 – 124.6 kPa)
Output Signal 4 – 20 mA DC + HART 5/7 Protocol
Accuracy ±0.04% of URL
Long-Term Stability ±0.1% of URL per 5 Years
Process Connection 1/2 NPT Male (Bottom Mount)
Electrical Connection 1/2 NPT Conduit Entry
Wetted Materials Hastelloy C-276
Housing Material 316L Stainless Steel
Process Temperature -40°C to +120°C (-40°F to +248°F)
Ambient Temperature -40°C to +85°C (-40°F to +185°F)
Supply Voltage 12 – 42 V DC
Load Resistance (HART) 230 – 600 Ω
Protection Rating IP67 (NEMA 4X)
Intrinsic Safety IS (Ex ia IIC T4/T5/T6)
Flameproof Ex d IIC T6 (Option Available)
SIL Rating SIL 2 (IEC 61508)
Approvals ATEX, IECEx, FM, CSA, CCC

Working Principle:
Silicon resonant sensor (SenSys) — differential pressure between the high (H) and low (L) ports deflects a sensing diaphragm, causing a measurable shift in the resonant frequency of silicon elements. The microprocessor calculates the differential pressure and outputs a 4–20 mA signal with HART 5/7 protocol for remote access.

Key Features:

  • Range: 0–500 inH2O (124.6 kPa) — Suitable for tank level and flow applications
  • ±0.04% URL accuracy — High precision across full range
  • HART 5/7 protocol — Full device description, diagnostics, and configuration
  • Bidirectional overpressure: 1000 inH2O (2490 mbar)
  • Square root extraction — Available via HART for flow measurement
  • Damping: 0.1 – 32 seconds — Configurable

Applicable Industries:
Oil & Gas (Tank Level), Chemical Processing, Water & Wastewater, Power Generation, Pulp & Paper, Food & Beverage (Level/Flow)

Installation Requirements:

  • Install with H port above L port for liquid level measurement
  • Use seal pots or siphons for steam/hot liquid service
  • Equalizing manifold required for zero adjustment
  • Ensure impulse lines are fully filled (liquid) or purged (gas)
  • Maximum static pressure: 1000 psi (6.9 MPa)

Usage Notes:

  • Do not exceed 1000 inH2O (2490 mbar) overpressure on either port
  • For flow measurement — configure square root extraction via HART
  • Perform zero calibration with both ports at equal pressure
  • Recommended recalibration interval: 5 years

Summary Comparison Table

Model Series Type Range Connection Wetted Material
P0916KF-0B P0916 Gauge Pressure 0–100 psi 1/2 NPT Bottom Hastelloy C-276
P0916NG P0916 Gauge Pressure 0–300 psi 1/2 NPT Bottom Hastelloy C-276
P0916PW P0916 Gauge Pressure 0–1000 psi 1/2 NPT Bottom Hastelloy C-276
P0916PWOC P0916 Gauge Pressure 0–1000 psi 1/2 NPT Bottom (OC) Hastelloy C-276
P0916QD P0916 Gauge Pressure 0–150 psi 1/2 NPT Bottom Hastelloy C-276
P0916XG P0916 Gauge Pressure 0–500 psi 1/2 NPT Bottom Hastelloy C-276
P0917MF P0917 Gauge Pressure 0–30 psi 1/2 NPT Bottom Hastelloy C-276
P0917XV P0917 Gauge Pressure 0–150 psi 1/2 NPT Bottom Hastelloy C-276
P0922YU P0922 Differential Pressure 0–100 inH2O 1/2 NPT Bottom Hastelloy C-276
P0924JH P0924 Differential Pressure 0–500 inH2O 1/2 NPT Bottom Hastelloy C-276

Universal Specifications (All Models)

Specification Value
Sensor Technology Silicon Resonant (SenSys)
Output 4–20 mA DC + HART 5/7 Protocol
Accuracy ±0.04% of URL
Stability ±0.1% of URL per 5 Years
Housing 316L Stainless Steel
Wetted Material Hastelloy C-276
Process Temp -40°C to +120°C (-40°F to +248°F)
Ambient Temp -40°C to +85°C (-40°F to +185°F)
Supply Voltage 12–42 V DC
Protection IP67 (NEMA 4X)
SIL Rating SIL 2 (IEC 61508)
Approvals ATEX, IECEx, FM, CSA, CCC
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