HE Series — Low Pressure Specialist
HE30 Wind/Differential Pressure Sensor
The HE30 wind and micro-differential pressure sensor is engineered for ultra-low-range pressure measurement from 100 Pa to 100 kPa. Utilizing a high-stability, oil-free silicon piezoresistive sensing element with stress-isolation packaging, it converts wind pressure or differential pressure into standard analog outputs (4–20 mA, 0–5 V, 0.5–4.5 V) with excellent long-term stability — ideal for HVAC, cleanroom, and gas network monitoring applications.
100 kPa
Max Range
±0.5%
Accuracy (FS)
0.5 Pa
Resolution
IP67
Protection
Quick Nav: Overview Specifications Features Applications Ordering Guide FAQ
Overview
The HE30 wind and micro-differential pressure sensor is purpose-built for measuring extremely low gauge or differential pressures — from as low as ±100 Pa up to 100 kPa. Unlike conventional oil-filled sensors that struggle at very low ranges, the HE30 employs a non-oil-filled, high-stability silicon piezoresistive element that maintains reliable performance even at sub-kilopascal levels.
Packaged in a rugged all-stainless-steel (304) enclosure with stress-isolation technology, the HE30 offers a dual-purpose design: a single port for gauge/wind pressure measurement, or dual ports for differential pressure applications. The sensor delivers ±0.5% FS accuracy (±1% FS for ranges ≤250 Pa) with a minimum resolution of 0.5 Pa and response time of ≤4 ms, making it one of the most responsive low-range pressure sensors available for industrial HVAC and cleanroom applications.
Standard analog outputs (4–20 mA, 0–5 V, 0.5–4.5 V) and multiple process connections (G1/4, M20×1.5, Φ8 barb fitting) ensure straightforward integration into building automation, environmental control, and gas distribution monitoring systems.
Specifications
| Parameter | Specification |
|---|---|
| Pressure Range | 0 … 100 Pa to 100 kPa (gauge); ±100 Pa to ±10 kPa (differential) |
| Pressure Type | Gauge / Differential (wind pressure) |
| Overload Capacity | 1.5–2× rated range |
| Burst Pressure | 4× rated range |
| Output Signal | 4–20 mA (2-wire) / 0–5 V / 1–5 V / 0.5–4.5 V (3-wire) |
| Supply Voltage | 9–30 V DC (current); 12–30 V DC (voltage) |
| Accuracy | ±0.5% FS typical (±1% FS for ≤250 Pa ranges) |
| Resolution | 0.5 Pa minimum |
| Response Time | ≤4 ms |
| Long-term Stability | ±0.2% FS/year typical; ±0.3% FS/year max |
| Zero Temp Drift | ±0.02% FS/°C typical; ±0.05% FS/°C max |
| Sensitivity Temp Drift | ±0.02% FS/°C typical; ±0.05% FS/°C max |
| Durability | >10 million cycles (10–90% FS) |
| Media Compatibility | Dry, clean gases compatible with 304 stainless steel |
| Media Temperature | -40°C to +100°C |
| Compensation Range | -20°C to +80°C |
| Vibration Resistance | 10g per IEC 60068-2-6 |
| Shock Resistance | 100g / 1 ms per IEC 60068-2-27 |
| EMC Compliance | EN61000-6-3 (emission), EN61000-6-2 (immunity) |
| Insulation Resistance | >100 MΩ @ 100 V |
| Ingress Protection | IP65 (connector) / IP67 (cable) per IEC 60529 |
| Housing Material | 304 stainless steel |
| Certification | CE (EU) |
Key Features
Oil-Free Sensing Element
Employs a non-oil-filled silicon piezoresistive chip that eliminates the temperature sensitivity and long-term drift problems associated with oil-filled low-pressure diaphragms — delivering consistent accuracy even at ranges below 1 kPa.
Dual-Purpose Wind & Differential Design
A single sensor body supports both gauge (wind) pressure measurement via one port and differential pressure via dual ports with a brass negative-pressure fitting, reducing inventory and simplifying system design for HVAC engineers.
Ultra-Fast 4 ms Response
Response time of ≤4 ms captures rapid pressure fluctuations in real time, making the HE30 suitable for dynamic VAV control, fan speed regulation, and combustion draft monitoring where delays can compromise efficiency or safety.
0.5 Pa Resolution
With a minimum resolution of 0.5 Pa, the HE30 detects the smallest pressure changes in cleanroom environments and filter-monitoring applications where even minor differential shifts indicate filter loading or room pressurization loss.
Stress-Isolation Packaging
The sensing element is mechanically isolated from the 304 stainless steel housing, preventing mounting torque and thermal expansion from introducing measurement errors — critical for maintaining ±0.2% FS/year long-term stability.
Φ8 Barb Fitting Option
In addition to standard M20×1.5 and G1/4 thread connections, the HE30 offers an integrated Φ8 barb (hose tail) fitting for direct tubing attachment — a practical advantage for duct-mounted wind pressure and HVAC differential measurements.
Applications
HVAC & Building Automation
Monitor duct static pressure, filter differential pressure, and room pressurization in commercial HVAC systems. Provides reliable feedback for VAV box control, fan speed modulation, and energy management systems.
Cleanroom & Pharmaceutical
Ensure room-to-room cascade pressure differentials meet ISO 14644 and GMP requirements. The 0.5 Pa resolution detects the smallest changes in cleanroom pressurization, essential for contamination prevention in semiconductor and pharmaceutical production.
Gas Network Monitoring
Monitor low-pressure natural gas and coal gas distribution networks where pipeline pressures typically range from a few hundred Pa to tens of kPa. Provides continuous real-time pressure data for leak detection and supply management.
Furnace & Combustion Control
Measure furnace draft pressure and oven pressurization to optimize combustion efficiency and ensure safe exhaust gas management. The 4 ms response time enables real-time draft regulation during rapid load changes.
Mine Ventilation
Monitor underground mine ventilation airflow pressure to maintain safe atmospheric conditions. The rugged 304 SS housing withstands harsh mining environments while providing reliable differential pressure readings across ventilation shafts and airways.
Filter Monitoring
Measure differential pressure across HEPA, ULPA, and industrial bag filters to determine filter loading status. Rising differential pressure triggers maintenance alerts, optimizing filter replacement schedules and reducing energy waste from clogged filters.
Ordering Guide
Build your model code using the format: HE30 [Pressure Type] [Range] [Output] [Process Connection] [Electrical Connection] [Options]
| Code | Option | Description |
|---|---|---|
| Pressure Type | ||
| G | Gauge / Wind | Single-port gauge or wind pressure |
| D | Differential | Dual-port differential pressure |
| Range (selected) | ||
| 002C | ±200 Pa | Bidirectional, G/D |
| 005C | ±500 Pa | Bidirectional, G/D |
| 01KC | ±1 kPa | Bidirectional, G/D |
| 002P | 200 Pa | Positive only, G/D |
| 01KP | 1 kPa | Positive only, G/D |
| 10KP | 10 kPa | Positive only, G/D |
| 40KP | 40 kPa | Positive only, G/D |
| 001B | 100 kPa | Positive only, G/D |
| Output Signal | ||
| A1 | 4–20 mA | 2-wire, 9–30 V DC |
| V1 | 1–5 V | 3-wire |
| V2 | 0–5 V | 3-wire |
| V3 | 0.5–4.5 V | 3-wire, ratiometric |
| Process Connection | ||
| F1 | M20×1.5 | Male thread |
| F2 | G1/4 | Male thread |
| F3 | Φ8 Barb | Hose tail fitting |
| F0 | Custom | Contact us for options |
| Electrical Connection | ||
| W1 | Cable 1 m | Direct cable, 1 meter |
| W2 | Hirschmann DIN 43650A | Industrial connector |
| W3 | M12 right-angle 1 m | M12 4-pin, right-angle |
| W4 | M12 straight 1 m | M12 4-pin, straight |
Example: HE30-G-01KN-A1-F2-W3 = HE30 gauge/wind, 0 to -1 kPa, 4–20 mA output, G1/4 thread, M12 right-angle 1 m cable. For differential measurement, use D prefix and connect negative pressure port. Custom configurations available for volume orders.
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Frequently Asked Questions
Need a Wind or Differential Pressure Solution?
Our engineering team can help you select the right HE30 configuration for your HVAC, cleanroom, or gas network application — from range selection and output signal matching to process connection and mounting recommendations.
Our engineers typically respond within 12 business hours with detailed technical specifications and pricing.