HIGH-ACCURACY INDUSTRIAL MEASUREMENT
HM22 High-Accuracy Pressure Transmitter
German sensing technology with ±0.1% FS overall accuracy, automatic temperature compensation (±0.01% FS/°C typical drift), and ≤2 ms response time — engineered for precision measurement in aerospace, petrochemical, and scientific research applications.
- ±0.1% FS overall accuracy (German piezoresistive chip)
- 4-20mA, 1-5V, 0-5V, 0.5-4.5V output signals
- IP67 rated, all stainless steel construction
- Wide range: -100 KPa to 100 MPa with 2× overload protection
- Optional Ex ia II CT5 intrinsic safety certification
Product Overview
The HM22 High-Accuracy Pressure Transmitter is jointly developed with a leading German sensor manufacturer, incorporating their precision force-sensitive silicon chip as the core sensing element. Advanced automatic temperature compensation and normalized circuit commissioning deliver outstanding accuracy of ±0.1% FS with temperature drift as low as ±0.01% FS/°C — making it one of the most temperature-stable transmitters in its class.
Covering a measurement range from -100 KPa to 100 MPa in both gauge and absolute pressure configurations, the HM22 features an all-stainless-steel fully enclosed construction rated IP67 for long-term outdoor deployment. The compact 250 g design supports multiple output formats (4–20 mA, 0–5 V, 1–5 V, 0.5–4.5 V) and optional Ex ia II CT5 intrinsic safety certification for hazardous area installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measuring Range | -100 KPa ~ 0 ~ 5 KPa … 100 MPa |
| Permissible Overload | 2× full-scale pressure (1.1× for 100 MPa range) |
| Pressure Type | Gauge pressure or Absolute pressure |
| Compatible Media | Gas or liquid compatible with 316 stainless steel |
| Overall Accuracy | ±0.1% FS / ±0.25% FS (linearity + repeatability + hysteresis) |
| Long-Term Stability | Typical: ±0.1% FS/year; Max: ±0.2% FS/year |
| Zero Point Temp. Drift | Typical: ±0.01% FS/°C; Max: ±0.15% FS/°C |
| Sensitivity Temp. Drift | Typical: ±0.01% FS/°C; Max: ±0.15% FS/°C |
| Working Temperature | -20°C to 85°C |
| Compensating Temperature | -20°C to 60°C |
| Ambient Temperature | -40°C to 85°C |
| Power Supply | 12–36 V DC (24 V DC standard) |
| Signal Output | 4–20 mA / 1–5 V DC / 0–5 V DC / 0.5–4.5 V DC |
| Load Resistance | ≤ (U−12) / 0.02 Ω |
| Enclosure Protection | IP65 (plug type); IP67 (cable type) |
| Explosion-Proof | Ex ia II CT5 (optional) |
| Vibration Tolerance | ≤ ±0.01% FS (X, Y, Z axes, 200 Hz/g) |
| Response Time | ≤ 2 ms |
| Thermal Hysteresis | ±0.1% FS (typical) |
| Insulation Resistance | 100 MΩ @ 500 V DC |
| Weight | Approx. 250 g |
Key Features
Reference-Grade Accuracy
±0.1% FS overall accuracy (linearity + repeatability + hysteresis) using German high-accuracy piezoresistive force-sensitive chip as the core sensing element.
Superior Temperature Stability
Automatic temperature compensation achieves ±0.01% FS/°C typical zero and sensitivity drift — among the best in class for industrial pressure transmitters.
Fast Response
≤2 ms response time with extremely low vibration sensitivity (±0.01% FS at 200 Hz/g) ensures accurate capture of dynamic process changes.
All-Stainless-Steel Construction
Fully enclosed 316 SS body rated IP67 for long-term outdoor deployment. Withstands harsh environmental conditions without calibration drift.
Hazardous Area Ready
Optional Ex ia II CT5 intrinsically safe certification enables deployment in explosive atmospheres when powered through a safety barrier.
Wide Range Coverage
-100 KPa to 100 MPa in gauge or absolute pressure configurations with 2× overload protection, covering vacuum through ultra-high pressure applications.
Applications
Aerospace & Defense
High-accuracy pressure and liquid level measurement in aircraft hydraulic systems, fuel management, and propulsion test stands requiring reference-grade precision.
Petroleum & Chemical
Process pressure monitoring in refinery distillation columns, reactor vessels, and pipeline systems where corrosive media and hazardous area certification are essential.
Metallurgy & Power
Furnace pressure control, steam system monitoring, and turbine inlet pressure measurement in steel mills and thermal/nuclear power plants.
Scientific Research
Laboratory-grade pressure measurement for fluid dynamics studies, materials testing, and calibration reference applications requiring ±0.1% FS traceable accuracy.
Environmental Monitoring
Groundwater level measurement, atmospheric pressure logging, and emissions monitoring systems requiring long-term stability without recalibration.
Medical & Pharmaceutical
Clean-room pressure differential monitoring, sterilizer vessel pressure control, and fluid delivery system verification in regulated healthcare environments.
Ordering Guide
Example: HM22 (0~10KPa) — 3 — A1 — F1 — W2 = High-accuracy transmitter, 0–10 KPa gauge, ±0.1% FS accuracy, 4–20 mA output, M20×1.5 thread, DIN3650 socket connector (IP65).
| Selection Code | Options |
|---|---|
| Code: Pressure Type | G = Gauge pressure (default if omitted), A = Absolute pressure |
| Range | (0~X KPa or MPa) — specify desired full-scale range |
| Code: Accuracy | 2 = ±0.25% FS, 3 = ±0.1% FS |
| Code: Signal Output | A1 = 4–20 mA, V1 = 1–5 V DC, V2 = 0–5 V DC, V3 = 0.5–4.5 V DC |
| Code: Connection | F1 = M20×1.5 external thread, F2 = G1/4 external thread, F0 = Special |
| Code: Cable/Connector | W1 = Cable type (IP67, 2 m), W2 = Socket type (IP65, DIN3650) |
| Code: Additional Options | P = Flush diaphragm type, E = Ex ia II CT5 intrinsically safe |
Note: The measured medium must be compatible with 316 stainless steel wetted parts. The code E (intrinsically safe Ex ia II CT5) requires an external safety barrier for power supply. Contact us for special requirements or custom configurations.
Related Pressure Transmitters
Frequently Asked Questions
Need a High-Accuracy Pressure Transmitter?
Tell us about your precision pressure measurement requirements — including media type, pressure range, accuracy class, and output signal. Our engineering team will recommend the optimal HM22 configuration for your specific application.
Typical lead time: 5–7 business days. Volume discounts available for OEM orders.