Explore our premium OEM/ODM industrial pressure gauges, digital transmitters, and bimetallic thermometers manufactured under strict ISO 9001 and CE directives.
Analyzing the pivotal role of CE-compliant sensing mechanisms across modern process automation, severe-service hydraulics, and eco-efficient power grids.
Modern process industries demand ultra-low signal drift under extreme dynamic pressure cycling. Glass micro-fused silicon pressure sensors eliminate organic adhesive degradation by bonding silicon strain gauges directly onto stainless steel isolation diaphragms using high-temperature glass frit fusing. This technology guarantees exceptional long-term stability (<±0.1% FS/year) and robust burst pressure ratios exceeding 500% of full scale.
For machinery manufacturers exporting to the European Economic Area (EEA), CE marking is not merely a label—it is a critical legal mandate. Pressure instruments operating in high-pressure conduits must comply with the Pressure Equipment Directive (PED 2014/68/EU) and EN 837-1 design criteria. Our certified pressure gauges undergo rigorous hydrostatic burst testing, overpressure endurance, and electromagnetic compatibility (EMC) testing per EN 61326-1 to ensure non-disruptive operation alongside heavy electrical equipment.
High-voltage electrical switchgears rely on Sulfur Hexafluoride (SF6) gas for arc-quenching insulation. Monitoring SF6 gas density requires temperature-compensated pressure gauges that isolate temperature-induced pressure variations from actual gas leakage. Utilizing bimetallic compensation mechanisms and gas-tight micro-switches, our SF6 monitors safeguard electrical substations against catastrophic flashovers while helping utility operators meet strict F-gas emission monitoring regulations globally.
20 YEARS OF EXPERIENCE AND RESEARCH
Huzhou Accuracy Instrument CO LTD is professionally engaged in the development, sales and service of industrial mechanical pressure gauges, bi-metal thermometers, SF6 manometer, pressure sensor. Products are widely used in various applications such as Mechanical Engineering, Chemical Engineering, Food Industry, Pharmaceutical, and high technology electric appliances.
Established over two decades ago, our pressure gauge manufacturing facility spans 3,000 square meters, equipped with advanced production lines and rigorous quality control systems. As an industry leader, we integrate innovation with precision engineering to deliver reliable measurement solutions for global clients.
An overview of our technical workforce, manufacturing output, and uncompromising quality commitment.
R&D Department (20 specialists): Focuses on material innovation, smart sensor integration, and compliance with international standards (e.g., ISO, API).
Production Workforce (120 technicians): Utilizes automated assembly and laser calibration technologies to ensure product durability and accuracy.
Sales & Service Unit (15 professionals): Provides 24/7 technical support and customized solutions across 30+ countries.
Annual output exceeds 2 million units, covering industrial-grade gauges (e.g., stainless steel gauge, black steel gauge, shock-proof gauge, SF6 gauge, thermometer, pressure sensor) for oil/gas, HVAC, and pharmaceutical sectors.
Products exported worldwide, with certifications including ISO, SGS, and CE, earning recognition for corrosion resistance and ±0.5% precision.
Our laboratory conducts 100% pressure cycle tests and environmental simulations, adhering to ISO 9001 and ISO 17025 standards.
Continuous improvement drives our reputation for "zero-leak" performance in extreme conditions, supported by a comprehensive one-year warranty across all product lines.
Custom-engineered measurement systems built to perform under intense vibrations, aggressive chemical media, and stringent hygiene protocols.
Operating in corrosive upstream and downstream environments requires maximum material integrity. Our NACE MR0175 compliant stainless steel pressure gauges (316L wetted parts) and explosion-proof transmitters prevent sulfide stress cracking in H2S-rich environments. Designed to withstand pulsating inline pressures up to 1,400 bar (20,000 PSI) with liquid-filled dials (glycerin or silicone oil) to dampen mechanical resonance.
Mobile machinery, hydraulic presses, and injection molding machinery subject pressure instruments to rapid pressure spikes and extreme mechanical shocks. Utilizing micro-fused piezoresistive silicon cells and shock-proof brass/stainless steel mechanical movements, our gauges prevent needle jump, pointer slippage, and internal diaphragm deformation under continuous dynamic loading.
Hygiene standards in aseptic manufacturing dictate zero dead-space environments where bacteria could aggregate. Our flanged diaphragm pressure gauges feature polished ASME BPE compliant stainless steel diaphragms with tri-clamp connections. They allow standard Clean-in-Place (CIP) and Sterilize-in-Place (SIP) thermal cycles up to 150°C without zero-point calibration shifts.
| Technology Type | Standard Pressure / Temp Ranges | Accuracy Class | Wetted Material | Key Industrial Advantage |
|---|---|---|---|---|
| Glass Micro-Fused Silicon | 0 to 1,000 Bar (-40°C to 125°C) | ±0.25% to ±0.5% FS | 17-4PH / 316L Stainless Steel | No organic bonds; ultra-high overpressure resistance & dynamic shock survival. |
| Corrosion Ceramic (AKS) | -1 to 600 Bar (-20°C to 85°C) | ±0.5% FS | 96% Al2O3 Ceramic Matrix | Exceptional chemical immunity against concentrated acids, alkalis, and slurry. |
| Stainless Steel Bourdon Tube | 0 to 1,400 Bar (-40°C to 200°C) | Class 1.0 / Class 1.6 (EN837-1) | AISI 316L Stainless Steel | Mechanical self-operated; zero electrical supply requirement; explosion-proof. |
| Bimetallic Temperature Sensing | -50°C to +500°C | Class 1.0 (EN 13190) | SS304 / SS316 Stainless Steel | Direct drive helix strip; rugged stem design with optional electrical alarm contacts. |
| SF6 Gas Density Monitor | -0.1 to 0.1 MPa (Nominal Gas State) | Class 1.0 / Class 1.6 | Hermetically Sealed SS Case | Bimetal temperature compensation keeps signal accurate across varying ambient conditions. |
We have long followed the concept of "reasonable price, accurate delivery, good quality" and several business management models to keep our production quality above the required benchmark under ISO9001:2008 certified.
How Huzhou Accuracy Instrument is integrating IIoT telemetry, low-power microprocessors, and eco-conscious gas density monitoring.
The industrial landscape is moving rapidly toward continuous condition monitoring. Our upcoming digital transmitter series integrates low-power WirelessHART and NB-IoT protocols, enabling remote pressure monitoring in off-grid pipelines, tank farms, and dangerous chemical zones without expensive wiring infrastructure.
With global environmental agencies phasing out high-GWP gases, electrical equipment OEMs are adopting eco-efficient insulating gas mixtures (such as g3, N2-CO2 blends). Huzhou Accuracy Instrument's R&D unit is pioneering multi-gas density monitors calibrated specifically for non-SF6 eco-gases, maintaining precision temperature compensation.
Our intelligent 3051 pressure transmitters now feature continuous internal diagnostic routines. By evaluating sensor diaphragm health, thermal cycling history, and loop integrity, the transmitter sends early maintenance alerts to SCADA systems prior to sensor failure, minimizing unplanned plant downtime.
Technical guidance for procurement managers, project engineers, and international equipment distributors.
Explore our extensive line of explosion-proof gauges, bimetallic thermometers, and ceramic sensor solutions.
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