Explore our CE certified industrial-grade sensing instruments, thin-film transducers, microfused silicon sensors, and bimetallic measuring gauge sets.
Huzhou Accuracy Instrument CO LTD is professionally engaged in the development, sales, and service of industrial mechanical pressure gauges, bi-metal thermometers, SF6 manometers, and advanced pressure sensors. Products are widely integrated across high-demanding sectors including Mechanical Engineering, Chemical Engineering, Food & Beverage Processing, Pharmaceutical Manufacturing, and High-Technology Electric Appliances.
Established over two decades ago, our state-of-the-art pressure gauge manufacturing facility spans over 3,000 square meters. Equipped with modern automated assembly lines, high-vacuum filling stations, and laser-guided micro-calibration systems, we combine continuous metallurgical innovation with precision engineering to deliver ultra-reliable, zero-leak measurement instruments to global B2B clients.
R&D Department (20 Specialists): Focuses on MEMS material innovation, smart IoT sensor integration, digital signal processing, and strict compliance with international standards (ISO, API, DIN, EN 837-1).
Production Workforce (120 Technicians): Operates precision CNC machining, automated laser welding, micro-fused glass sintering, and modern robotic calibration cells.
Sales & Technical Service (15 Engineers): Delivers 24/7 OEM/ODM consultation, custom CAD design, and localized technical support in over 30 countries.
Our facility generates an annual production volume exceeding 2 million units, spanning industrial stainless steel gauges, liquid-filled shock-proof gauges, bimetallic thermometers, SF6 gas density monitors, and high-accuracy pressure transmitters.
Products are exported to North America, Europe, Southeast Asia, the Middle East, and South America. Certified under CE, ISO9001, and SGS standards, our instrumentation is recognized globally for superior corrosion resistance and consistent ±0.5% FS precision.
Our ISO 17025 compliant testing laboratory executes 100% full-scale pressure fatigue cycle testing, micro-leak helium mass spectrometry checks, dynamic thermal chamber shock trials (-40°C to +150°C), and vibration resistance evaluations.
Adhering to strict lean manufacturing methodologies, our continuous quality improvement process ensures zero-leak performance and structural integrity under severe impulse hydraulic spikes, backed by a comprehensive warranty program.
We rigorously adhere to the business philosophy of "Reasonable Pricing, Punctual Delivery, Uncompromising Quality." Our quality management system operates under ISO 9001:2008 certification, ensuring every CE marked oil pressure and temperature gauge set meets international safety directives.
An in-depth analysis of emerging trends, thermodynamic dynamics, transducer integration, and safety compliance in modern heavy machinery and hydraulic control circuits.
In modern industrial hydraulic systems, heavy-duty diesel engines, marine propulsion units, and turbomachinery, monitoring system health requires continuous measurement of fluid pressure and fluid temperature. Lubricating oil acts as both a stress-reducing barrier and a primary thermal transfer medium. When oil temperature escalates due to mechanical friction or fluid shear, its kinematic viscosity degrades exponentially. This viscosity breakdown leads to boundary lubrication failure, catastrophic metallic wear, severe cavitation, and unpredicted system shutdowns.
Historically, industrial operators relied on distinct, separate mechanical instruments: an isolated mechanical Bourdon tube pressure gauge paired with a separate capillary dial thermometer. This legacy approach introduced multiple point-of-failure tapings into hydraulic manifolds, increased the risk of fluid leakage, doubled installation labor costs, and created spatial congestion in modern, compact power units. The industry transition toward integrated Oil Pressure Temperature Gauge Sets directly solves these operational vulnerabilities by combining dual thermodynamic sensing elements into a unified, high-integrity mechanical housing or hybrid electronic sensor module.
A drop in hydraulic system oil pressure is frequently a secondary symptom of elevated oil temperature. Integrating simultaneous pressure and thermal sensing within a single probe body allows embedded controllers and maintenance technicians to accurately correlate fluid thinning with localized thermal spikes, enabling real-time predictive diagnostic capabilities.
The global industrial instrumentation sector is undergoing a rapid evolution driven by three primary macro-technological catalysts:
| Sensing Technology | Pressure Accuracy (FS) | Temp Measurement Range | Vibration Resistance | Primary Industrial Applications |
|---|---|---|---|---|
| Glass Microfused Silicon | ±0.25% to ±0.5% | -40°C to +150°C | 20g (20-2000Hz) | Heavy Mobile Hydraulics, Injection Molding, Off-Highway Vehicles |
| Diffused Silicon Strain Gauge | ±0.5% | -20°C to +105°C | 10g (10-500Hz) | Industrial Automation, Water Hydraulics, Process Plants |
| Ceramic Piezoresistive Transducer | ±0.5% to ±1.0% | -20°C to +85°C | 15g (20-1000Hz) | Chemical Processing, Corrosive Media, Agricultural Equipment |
| Mechanical Bimetalic + Bourdon Tube | ±1.6% (Class 1.6) | -40°C to +200°C | 5g (Glycerin Filled) | Local Machinery Monitoring, Stationary Generators, Compressor Units |
A closer look at the advanced metallurgical processing, MEMS micro-machining, and calibration standards engineered into our dual gauge product line.
Unlike conventional strain gauges bonded with organic adhesives that suffer from creep and thermal degradation over time, our high-precision microfused pressure sensors utilize high-temperature glass micro-fusing technology. High-temp glass frit melts and fuses piezoresistive silicon strain gauges directly onto a stainless steel substrate at temperatures exceeding 700°C.
This creates an inorganic, molecular bond capable of enduring millions of high-pressure fluid pulse cycles without signal drift or hysteresis, delivering superior long-term performance in extreme oil environments.
Our bimetallic and electronic temperature sensing stems feature helically coiled bimetallic elements composed of two metals with differing thermal expansion coefficients, or ultra-stable PT100/PT1000 Platinum RTD sensors bonded within thermal conductive grease.
The temperature probe tube is cold-drawn from seamless 316L stainless steel, designed to penetrate directly into the high-velocity oil channel. This engineering structure ensures fast thermal response times (T90 < 5 seconds) while providing structural resistance against severe mechanical drag forces.
Severe mechanical vibrations generated by internal combustion engine blocks, hydraulic pumps, and piston compressors present significant challenges to analog pointer stability and sensor circuit longevity. Our vibration-proof gauge series features high-purity (99.5%) liquid glycerin or silicone oil filling inside hermetically sealed IP65/IP67/IP68 stainless steel cases.
The fluid fill dampens internal mechanism gear movement, lubricates moving contact points, eliminates dial flutter, and prevents internal condensation buildup caused by ambient temperature swings.
Empowering global machinery manufacturers, procurement directors, and system integrators with standardized quality, customizable engineering, and resilient supply chain logistics.
Unplanned machinery downtime caused by instrument failure results in substantial operational losses per hour in mining, marine, and construction sectors. Huzhou Accuracy Instrument's CE certified dual gauge sets are engineered for an operational lifetime exceeding 10 million dynamic pressure cycles.
By combining two measurement parameters into a single installation port, enterprise buyers cut machining costs, reduce installation time by up to 50%, and lower global spare-parts SKU management overhead.
We provide extensive engineering customization to align with specific global customer standards. Tailored parameters include thread geometries (1/4 NPT, 1/2 NPT, BSPP G1/4, G1/2, M20x1.5), dual unit dial artwork (PSI/Bar, kPa, °C/°F), and custom branded dial face printings.
Electrical signal connections are fully configurable with Hessmann Hirschmann connectors, M12 4-pin waterproof circular plugs, Packard connectors, or direct flying leads with IP68 strain relief cabling.
Operating from our 3,000 square meter manufacturing base with automated stock control systems, we maintain lean manufacturing buffers for core components such as piezoresistive chips, Bourdon tubes, and stainless steel housings.
Our streamlined export logistics guarantee rapid batch production, automated customs documentation compliance, safety export packaging, and reliable door-to-door delivery across over 30 countries worldwide.
Ensuring absolute compliance with European Conformity (CE), Electromagnetic Compatibility (EMC), Pressure Equipment Directives (PED), and ATEX explosion safety standards.
The CE mark affixed to our Oil Pressure Temperature Gauge Sets signifies strict conformity with essential European health, safety, and environmental protection requirements. For industrial pressure transmitters and digital dual display gauges, compliance spans two core directives:
For applications situated in hazardous volatile atmospheres—such as offshore oil platforms, chemical refineries, gas compressor stations, and CNG automotive systems—we manufacture ATEX certified explosion-proof electric contact bimetal thermometers and intrinsically safe pressure transmitters. Utilizing flameproof enclosures (Ex d IIC T6 Gb) or intrinsically safe circuitry (Ex ia IIC T4 Ga), our hazardous environment products prevent internal electrical arc energy from igniting ambient explosive vapor or dust mixtures.
Every single oil pressure temperature gauge set dispatched from our Huzhou production facility undergoes automated multi-point laser calibration against certified secondary pressure standards traceable to national measurement institutes. Production serial numbers are logged into our quality database along with full material test reports (MTRs) for 316L stainless steel wetted components, guaranteeing 100% component-level traceability across the supply chain.
Pioneering the next generation of intelligent, self-diagnosing, and wirelessly connected fluid condition monitoring systems.
Integration of ultra-low power wireless communication protocols—including LoRaWAN, NB-IoT, and Bluetooth Low Energy 5.0—into compact gauge bodies. Enables remote engine room and distributed hydraulic pipeline monitoring without installing complex signal wiring conduits.
Next-generation digital transmitters featuring embedded edge-microcontrollers. By processing high-frequency pressure fluctuation waveforms alongside temperature drift rates, internal algorithms detect pump cavitation, aeration, valve scoring, and fluid oxidation before catastrophic mechanical failures occur.
Development of specialized high-temperature silicon-on-insulator (SOI) MEMS micro-chips capable of continuous operation in extreme thermal environments reaching up to +300°C, opening new frontiers for high-performance automotive testing, aerospace fluid monitoring, and deep geothermal drilling rigs.
Comprehensive answers to common technical queries regarding installation, calibration, CE compliance, and OEM customization of oil pressure temperature gauge sets.
Browse our complete specialized range of silicon transmitters, electric contact bimetallic thermometers, SF6 monitors, and automotive CNG pressure sensors.
Accuracy Instrument