HM200 SERIES — WIRELESS IoT PRESSURE MONITORING
HM200 Wireless Pressure Sensor (LoRa)
The HM200 is a modular wireless pressure sensor featuring LoRa long-range communication, battery-powered operation, and cloud-based monitoring. Designed for remote SCADA pressure monitoring in water supply, oil & gas, HVAC, and industrial process applications where wired connections are impractical or cost-prohibitive.
Overview | Specifications | Features | Applications | Ordering Guide | FAQ | Get Quote →
Wireless IoT Pressure Monitoring Without Wiring Costs
The HM200 Wireless Pressure Sensor is part of the HM200 series — a modular wireless pressure monitoring platform developed by HELM. It combines industrial-grade diffused silicon or single crystal silicon pressure sensing elements with a German-engineered LoRa wireless communication module to deliver reliable, long-range pressure data transmission without the cost and complexity of traditional wired installations.
At the core of the HM200 is a versatile modular architecture built around four functional units: a pressure sensing chip, a wireless transmission module, a power supply module, and a cloud software platform. This modular approach allows the HM200 to be configured for a wide range of applications — from municipal water supply network monitoring to remote oil & gas wellhead pressure surveillance — simply by selecting the appropriate sensor element and communication protocol.
The LoRa variant provides transmission distances of up to 5 km in open environments (further with gateway relay), making it ideal for geographically distributed monitoring points. Combined with a high-capacity lithium battery that supports 3+ years of operation at standard reporting intervals, the HM200 eliminates the need for power lines and signal cables — dramatically reducing installation costs and deployment time compared to conventional wired pressure transmitters.
Technical Specifications
| Parameter | HM200 Specification |
|---|---|
| Measuring Range | 0–0.1 MPa to 0–60 MPa (customizable) |
| Overload Capacity | 1.5× to 2× rated pressure |
| Overall Accuracy | ±0.5% FS / ±0.25% FS (standard); ±0.1% FS / ±0.05% FS (single crystal silicon) |
| Long-Term Stability | ≤0.1% FS/year |
| Sensing Technology | Diffused silicon / Single crystal silicon (selectable) |
| Operating Temperature | −20°C to +85°C |
| Compensated Temperature | −10°C to +60°C |
| Wireless Protocol | LoRa (433 MHz / 470 MHz / 868 MHz / 915 MHz selectable) |
| Transmission Distance | Up to 5 km (open area); extendable via gateway relay |
| Power Supply | Built-in high-capacity lithium battery (3.6V) |
| Battery Life | 3–5 years (dependent on reporting interval) |
| Reporting Interval | Configurable: 1 min to 24 hours |
| Wetted Material | 316L stainless steel |
| Process Connection | G1/4, G1/2, M20×1.5, 1/4 NPT, 1/2 NPT (customizable) |
| Protection Grade | IP65 / IP67 |
| Display | Optional LCD (HM200B/C variants) |
| Explosion Proof | Optional Ex ia IIC T6 (HM200C variant) |
| Cloud Platform | PC web + mobile APP (iOS/Android) + WeChat mini-program |
Key Features
LoRa Long-Range Wireless
German-engineered LoRa module delivers stable data transmission up to 5 km in open environments. Low power consumption enables years of battery operation without maintenance. Supports 433/470/868/915 MHz frequency bands for global deployment.
Modular Sensor Architecture
Interchangeable pressure sensing elements — diffused silicon for standard applications, single crystal silicon for high-precision differential or absolute pressure measurement, and polycrystalline silicon for extreme pressure (up to 500 MPa) or temperature conditions.
Cloud IoT Platform
Integrated cloud monitoring system accessible via PC browser, mobile APP, or WeChat mini-program. Real-time data display, historical trend analysis, configurable alarm thresholds, GPS positioning, and automatic data export for compliance reporting.
3+ Year Battery Life
High-capacity 3.6V lithium battery with ultra-low power management. Configurable reporting intervals from 1 minute to 24 hours to optimize battery life. Optional solar panel or 24VDC external power for continuous high-frequency monitoring.
Multiple Sensor Options
Standard diffused silicon covers 0–60 MPa with ±0.5% FS accuracy. Upgrade to single crystal silicon for ±0.1% or ±0.05% FS precision. Optional temperature + pressure integrated sensor module for simultaneous dual-parameter monitoring.
Flexible Power Options
Choose from built-in lithium battery for cable-free installation, rechargeable battery for periodic maintenance, 24VDC mains power for permanent installations, or solar panel for off-grid locations. Mix and match to suit your deployment environment.
Application Scenarios
The HM200 wireless pressure sensor is designed for distributed pressure monitoring applications where traditional wired transmitters are impractical due to distance, installation cost, or terrain challenges:
Municipal Water Supply Networks
Monitor pressure at distribution nodes, pumping stations, and storage tanks across city-wide water networks. Detect leaks and pressure drops in real time without running signal cables between monitoring points.
Oil & Gas Wellhead Monitoring
Remote wellhead and pipeline pressure surveillance in oil fields where wells may be kilometers apart. Battery-powered operation eliminates the need for power infrastructure at each monitoring point.
HVAC & Building Automation
Wireless chiller, boiler, and air handling unit pressure monitoring for building management systems. Reduce retrofit wiring costs in existing buildings while maintaining continuous system oversight.
Fire Suppression Systems
Continuously monitor sprinkler system and fire hydrant pressure to ensure readiness. Cloud-based alerts notify maintenance teams of pressure drops that could indicate leaks or system failures.
Industrial Gas Distribution
Monitor compressed air, nitrogen, oxygen, and other industrial gas distribution systems. Track pressure at multiple supply points to optimize compressor scheduling and detect system inefficiencies.
Agricultural Irrigation
Monitor irrigation pipeline pressure across large agricultural operations. Battery-powered LoRa sensors provide coverage over vast field areas with minimal infrastructure requirements.
Ordering Guide
The HM200 series uses a modular ordering system. Select the variant, pressure range, accuracy class, and options to configure your wireless pressure sensor:
| Selection | Options |
|---|---|
| Model Variant | HM200A: Standard LoRa (no display) | HM200B: LoRa + LCD display | HM200C: LoRa + LCD + Ex ia explosion-proof |
| Pressure Range | 0–0.1 MPa, 0–0.6 MPa, 0–1 MPa, 0–2.5 MPa, 0–4 MPa, 0–10 MPa, 0–25 MPa, 0–60 MPa (custom ranges available) |
| Accuracy Class | 0.5% FS (standard) | 0.25% FS | 0.1% FS (single crystal silicon) | 0.05% FS (single crystal silicon) |
| Sensor Type | Diffused silicon (standard) | Single crystal silicon (high precision) | Polycrystalline silicon (extreme conditions) |
| LoRa Frequency | 433 MHz | 470 MHz (China) | 868 MHz (EU) | 915 MHz (US/AU) |
| Process Connection | G1/4 (default) | G1/2 | M20×1.5 | 1/4 NPT | 1/2 NPT | Custom flange |
| Power Supply | Built-in lithium battery (default) | Rechargeable battery | 24VDC external | Solar panel |
| Optional Features | Temperature + pressure integrated sensor | GPS positioning | Extended battery pack | Lightning protection |
Contact our engineering team for assistance selecting the optimal configuration for your specific application requirements.
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Frequently Asked Questions
Need a Wireless Pressure Monitoring Solution?
Our engineering team specializes in wireless IoT pressure monitoring solutions. Whether you need a standard HM200 configuration for water network monitoring or a fully customized system with explosion-proof certification for oil & gas applications, we can help you design the right wireless sensor network for your specific requirements.
Our engineers typically respond within 12 business hours with detailed technical specifications and pricing.