HM Series — Ceramic Sensor Technology

HM23Y Oilfield & Mining Well Pressure Transmitter

Ceramic sensor technology rated to 220 MPa and 120°C, with anti-clogging flush diaphragm design — purpose-built for viscous media, slurry environments, and high-vibration oilfield well measurement applications.

±0.25% FS Accuracy0–220 MPa4-20mA / 0-5V Output120°C Max TempAnti-Clogging Design
HM23Y Oilfield Mining Well Pressure Transmitter

Product Overview

The HM23Y is specifically engineered for the extreme conditions encountered in oilfield drilling, well measurement, and mining operations. Unlike conventional pressure transmitters that can clog in slurry-laden environments, the HM23Y uses European-manufactured ceramic pressure sensor technology (AL2O3 or 17-4PH membrane) to provide reliable measurement even with viscous, particulate-heavy media.

With a measurement range extending to 220 MPa and operating temperature up to 120°C, the HM23Y handles the high-pressure, high-temperature conditions typical of deep well operations. Its fully stainless steel cylindrical construction withstands intense vibration and shock, while the compact 250 g form factor enables direct process installation in space-constrained downhole tooling.

Technical Specifications

ParameterSpecification
Measuring Range-100 KPa ~ 0 ~ 0.1 MPa … 220 MPa
Permissible Overload2× full-scale (1.1× for ≥100 MPa ranges)
Pressure TypeGauge pressure or Absolute pressure
Compatible MediaGas or liquid compatible with 316 stainless steel
Overall Accuracy±0.1% FS / ±0.25% FS / ±0.4% FS
Long-Term StabilityTypical: ±0.1% FS/year
Operating Temperature-40°C to +120°C
Compensating Temperature-20°C to 85°C
Zero Point Temp. Drift≤ ±0.02% FS/°C
Sensitivity Temp. Drift≤ ±0.02% FS/°C
Thermal Hysteresis±0.02% FS (typical)
Power Supply12–36 V DC (24 V DC standard)
Signal Output4–20 mA / 1–5 V DC / 0–5 V DC / 0.5–4.5 V DC
Response Time≤ 2 ms
Load Resistance≤ (U−12) / 0.02 Ω
Enclosure ProtectionIP65 (plug type); IP67 (cable type)
Explosion-ProofEx ia II CT5 (optional)
Vibration Tolerance≤ ±0.01% FS (X, Y, Z axes, 200 Hz/g)
Sensor Membrane17-4PH stainless steel or AL2O3 ceramic
Insulation Resistance100 MΩ @ 500 V DC
WeightApprox. 250 g

Key Features

🛢️

Anti-Clogging Ceramic Sensor

European-manufactured AL2O3 ceramic or 17-4PH membrane withstands viscous, slurry-laden media without clogging — critical for oilfield drilling mud and mining slurry measurement.

💪

Ultra-High Pressure Range

Measurement up to 220 MPa covers even the deepest high-pressure well operations, with 2× overload protection for field safety.

🌡️

Extended Temperature Range

Operates from -40°C to +120°C with low temperature drift (±0.02% FS/°C), ensuring stable readings in hot downhole environments.

🔩

Rugged Cylindrical Design

Fully stainless steel construction withstands extreme vibration (25 g sine) and shock common in drilling and well operations. Compact 250 g for direct process installation.

🎯

High Accuracy

Up to ±0.1% FS overall accuracy with ±0.02% FS thermal hysteresis, delivering reliable data for critical well pressure monitoring decisions.

💥

Hazardous Area Certified

Optional Ex ia II CT5 intrinsically safe certification for deployment in explosive atmospheres typical of petroleum and mining environments.

Applications

Oilfield Well Measurement

Downhole pressure monitoring during drilling, completion, production, and workover operations in conventional and unconventional reservoirs.

Mining & Mineral Processing

Slurry pipeline pressure measurement, hydraulic prop monitoring, and underground water management in coal, metal, and mineral mining.

Aerospace & Defense

High-pressure hydraulic system monitoring in aircraft landing gear, flight control actuators, and missile launch systems.

Pharmaceutical & Biotech

Fermentation vessel pressure control, autoclave monitoring, and process validation in sterile manufacturing environments.

Hydraulic Fracturing

Wellhead and downhole pressure monitoring during fracking operations where extreme pressures and vibration are encountered.

Textile Industry

High-pressure water jet loom systems, dyeing machine pressure control, and compressed air system monitoring.

Ordering Guide

Example: HM23Y (0~20MPa) — 1 — A — F1 — W2 = Oilfield pressure transmitter, 0–20 MPa gauge, ±0.4% FS, absolute pressure, M20×1.5 thread, Hirschman socket (IP65).

Selection CodeOptions
Code: Pressure TypeG = Gauge (default), A = Absolute
Range(0~X KPa) — specify desired full-scale range up to 220 MPa
Code: Accuracy1 = ±0.4% FS, 2 = ±0.25% FS, 3 = ±0.1% FS
Code: Signal OutputA1 = 4–20 mA, V1 = 1–5 V DC, V2 = 0–5 V DC, V3 = 0.5–4.5 V DC
Code: ConnectionF1 = M20×1.5, F2 = G1/4, F3 = M24×1.5, F0 = Special
Code: Cable/ConnectorW1 = Cable (IP67, 2 m), W2 = Hirschman socket (IP65, DIN43650), W3 = Aerospace plug (IP65)
Code: AdditionalP = Flush diaphragm, E = Ex ia II CT5 intrinsically safe

Frequently Asked Questions

The HM23Y covers measurement ranges from 0–600 bar (standard) up to 0–220 MPa (2200 bar) in extended configurations, suitable for deep well and high-pressure oilfield applications.

The HM23Y uses a flush diaphragm (no recessed cavity) made from AL2O3 ceramic or 17-4PH stainless steel membrane. This prevents viscous media, slurry, and particulates from accumulating and blocking the pressure port — a common failure mode in conventional transmitters used in mining and drilling.

The HM23Y operates in medium temperatures up to 120°C and ambient temperatures from -40°C to +85°C, making it suitable for downhole and surface applications in oilfield environments.

Standard output options include 4–20 mA (two-wire), 0–5 V, 1–5 V, and 0.5–4.5 V. Custom configurations are available upon request for specific OEM integration requirements.

The HM23Y is designed primarily for surface and downhole oilfield/mining applications with IP65 protection. For fully submersible or subsea applications, consider the HM210 submersible level transmitter series.

The HM23Y features CE marking and complies with EN 61000-6-2 (industrial immunity) and EN 61000-6-3 (emission) EMC standards. Optional ATEX/IECEx certifications are available for hazardous area installations.

Need an Oilfield-Grade Pressure Solution?

Our team has deep experience configuring the HM23Y for demanding downhole and mining well applications. Contact us for custom configurations, volume pricing, or technical consultation.