HM Series — Piezoresistive Technology

HM10 Compact Pressure Sensor

±0.1% FS Accuracy10 kPa – 70 MPamV Output (70-110 mV)IP67 / 250 g≤1 ms Response
HM10 Compact Pressure Sensor - High Precision OEM Piezoresistive Sensor

Raw Sensing Performance for OEM Design Engineers

Most pressure transmitters include integrated signal conditioning — converting the raw bridge output into a standardized 4-20mA or voltage signal. The HM10 deliberately omits this layer. Instead, it provides a clean 70-110 mV DC full-scale output directly from the laser-trimmed Wheatstone bridge, powered by either 1.5 mA constant current or 10-24 V DC constant voltage excitation.

This approach gives OEM design engineers full control over signal conditioning, amplification, filtering, and digitization using their own electronics. If you’re designing a smart sensor module, an IoT edge device, or a custom DAQ system, the HM10 gives you the highest-quality raw pressure signal in the most compact form factor.

The German-imported precision sensing element is laser-trimmed for both zero offset and temperature compensation across -10 to 50°C. Thermal hysteresis is specified at ±0.1% FS. The HM10’s all-stainless construction (316L diaphragm, 1Cr18Ni9Ti body) handles gases and liquids compatible with austenitic stainless steel. At 250 grams, it fits into tight spaces on compressors, pumps, actuators, and test fixtures.

HM10 Technical Specifications

ParameterSpecification
Measurement Range-0.1 MPa to 0 … 10 kPa to 70 MPa (vacuum to 10,150 psi)
Pressure TypeGauge or Absolute
Comprehensive Accuracy±0.1% FS | ±0.25% FS | ±0.4% FS
Long-term Stability≤ ±0.1% FS/year
Overload Pressure2× full-scale
Excitation1.5 mA DC constant current or 10–24 V DC constant voltage
Zero Output0 ± 2 mV DC
Full-Scale Output70–110 mV DC (typical 100 mV)
Response Time≤ 1 ms
ResolutionInfinite (analog) | 1/100,000 typical
Operating Temperature-40 to +85°C
Compensated Temperature-10 to +50°C
Zero Temp CoefficientTypical: ±0.02% FS/°C | Max: ±0.04% FS/°C
Span Temp CoefficientTypical: ±0.02% FS/°C | Max: ±0.04% FS/°C
Thermal Hysteresis±0.1% FS (typical)
Insulation Resistance100 MΩ at 500 V DC
VibrationNo change at 10g RMS, 20–2,000 Hz
Lifecycle1 × 10⁸ pressure cycles
Wetted Material — Diaphragm316L Stainless Steel
Wetted Material — Body1Cr18Ni9Ti Stainless Steel
Wetted Material — SealFKM (Viton) O-ring
Electrical ConnectionPG7 cable gland | DIN 43650 connector
Protection GradeIP67 (cable) | IP65 (connector)
WeightApproximately 250 g (0.55 lb)

Key Features

Ultra-Fast 1 ms Response

The HM10’s ≤1 ms response time makes it suitable for dynamic pressure measurement — hydraulic pulse testing, engine combustion analysis, and pneumatic valve response characterization. The mV output preserves the full bandwidth of the sensing element.

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10⁸ Cycle Lifetime

Rated for 100 million pressure cycles, the HM10 handles continuous cycling of hydraulic systems, compressor pulsation, and reciprocating pump applications without performance degradation.

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Dual Excitation Options

Power the bridge with 1.5 mA constant current (for battery-powered applications and minimal self-heating) or 10-24 V DC constant voltage (simpler integration with existing power supplies).

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250 g Compact Package

Half the weight of a standard industrial transmitter, the HM10 fits into space-constrained test fixtures, robotic end-effectors, mobile hydraulic manifolds, and medical device housings.

OEM & Integration Applications

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Custom Transmitter Design

Electronics manufacturers use the HM10 as the core sensing element in their own branded pressure transmitters, adding proprietary signal conditioning, communication protocols (CAN, LIN, IO-Link), and housing designs.

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Test & Measurement Equipment

Hydraulic test stands, burst/leak test machines, and automotive powertrain test cells need the HM10’s raw mV output for direct connection to precision DAQ systems (NI, HBM, Kistler). The ≤1 ms response captures transient events.

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Medical Device Integration

Ventilator pressure monitoring, infusion pump occlusion detection, and hyperbaric chamber pressure control. The HM10’s compact size, low power excitation (1.5 mA), and high resolution suit medical equipment design.

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IoT Sensor Nodes

Battery-powered wireless sensor platforms pair the HM10 with a low-power ADC and wireless MCU (LoRa, BLE, NB-IoT). The 1.5 mA constant current excitation consumes minimal power.

HM10 Ordering Guide

Model Code Structure

HM10 — [Range][Accuracy][Excitation][Connection][Electrical][Options]
CodeFieldOptions
RangeMeasurement Range10 kPa, 20 kPa, 50 kPa, 100 kPa, 200 kPa, 500 kPa, 1 MPa, 2 MPa, 5 MPa, 10 MPa, 20 MPa, 40 MPa, 60 MPa, 70 MPa
AccuracyAccuracy Grade1 = ±0.1% FS | 2 = ±0.25% FS | 4 = ±0.4% FS
ExcitationExcitation TypeD1 = 1.5 mA constant current | D2 = 10-24V constant voltage
ConnectionProcess ConnectionV1 = M20×1.5 | V2 = G1/4 | V3 = G1/2 | V4 = 1/4NPT | V5 = 1/2NPT | Custom available
ElectricalElectrical ConnectionF1 = PG7 cable gland, 2m cable | F2 = DIN 43650 connector
OptionsAdditional OptionsW1 = Extended temp (-40~85°C) | E = Individual calibration certificate

Example Order Code

HM100-200kPa1D2V1F2W1 E

= HM10 sensor, 0-200 kPa range, ±0.1% FS accuracy, constant voltage excitation, M20×1.5 connection, DIN 43650 connector, extended temperature + calibration certificate

Need a custom configuration? Contact us for non-standard ranges, special process connections, custom cable lengths, or high-volume OEM pricing.

HM10 Frequently Asked Questions

The HM10 outputs 70-110 mV DC at full scale from a Wheatstone bridge. You’ll need an instrumentation amplifier (e.g., INA128, AD620, or integrated sensor signal conditioner like MAX1452) to amplify and condition this signal. Temperature compensation beyond the sensor’s built-in laser trimming is typically handled digitally in the MCU firmware using the specified temperature coefficients.

The bridge input impedance is typically 3-5 kΩ, and the output impedance is typically 3-5 kΩ. Use a high-impedance instrumentation amplifier (>1 MΩ input impedance) to avoid loading the bridge. Exact impedance values for your specific range are provided in the individual calibration certificate.

The HM10 is specifically designed as a raw mV output sensor for OEM integration. If you need integrated signal conditioning with 4-20mA, 0-5V, or 0.5-4.5V output, see the HM12 or HM20. These use the same core sensing element with added amplification and signal conditioning electronics.

Constant current (1.5 mA) provides better temperature stability and consumes less power, making it preferred for battery-powered applications. Constant voltage (10-24 V DC) is simpler to implement and more common in industrial instrumentation. Both methods deliver the same 70-110 mV full-scale output.

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