Explore our industrial-grade measurement units, certified under rigorous CE, ISO, and global safety standards for low to ultra-high pressure environments.
Providing critical process control components engineered to withstand extreme vibrations, corrosive media, and demanding thermodynamic environments.
In modern industrial processing, accurate measurement of fluid dynamics and thermodynamic properties is vital for operational safety, regulatory compliance, and process efficiency. As a top-tier OEM Pressure Gauge and Temperature Instrument Manufacturer, Huzhou Accuracy Instrument Co., Ltd. delivers customized instrument architectures tailored to complex industrial challenges.
Mechanical pressure gauges and bimetallic thermometers remain essential lines of defense in process safety. Whether handling cryogenic fluids, ultra-pure gases, or high-viscosity corrosive slurries, our custom-engineered sensing devices maintain full accuracy within tight tolerance thresholds (±0.5% to ±1.6% FS per EN 837-1 and ASME B40.100 standards).
Combining traditional mechanical durability with modern IoT connectivity and advanced material metallurgy.
We are bridging mechanical gauges and Industry 4.0 digitisation. Our modern transducers feature low-power Bluetooth Low Energy (BLE), HART Protocol, and RS485 Modbus communications, enabling real-time remote pressure/temperature telemetry with battery lifespans exceeding 5 years.
Handling aggressive media like hydrogen sulfide ($H_2S$), wet chlorine, and concentrated acids requires robust materials. We utilize SS316L, Hastelloy C-276, Monel 400, and Tantalum diaphragms alongside PTFE linings to protect accuracy under harsh chemical exposure.
Our automated orbital laser welding processes seal element housings and diaphragm cups to maintain zero-leak performance. Tested via Helium Mass Spectrometry down to $1 \times 10^{-9}$ mbar·L/s, preventing media leakage into sensitive dial movements.
| Parameters | Pressure Gauges Specifications | Bi-Metal / Capillary Thermometers | Transducers & Smart Monitors |
|---|---|---|---|
| Measurement Range | -0.1...0 MPa up to 0...160 MPa (-1...0 bar to 0...1600 bar) | -80°C to +600°C (-112°F to +1112°F) | -0.1 MPa to 100 MPa (Relative / Absolute / Diff) |
| Accuracy Grade | Class 1.0, Class 1.6, Class 2.5 (ASME Grade 2A to B) | Class 1.0, Class 1.5 (±1% of full scale) | ±0.1% FS, ±0.25% FS, ±0.5% FS |
| Wetted Materials | Brass, Stainless Steel 304, 316L, Hastelloy C-276, Monel | Stainless Steel 304 / 316L (Custom Stem Diameters) | Ceramic, Piezo-resistive Silicon, SS316L Diaphragm |
| Ingress Protection | IP54, IP65, Hermetically Sealed IP67 | IP65, IP67 Waterproof Field Mounting | IP65, IP67, Weatherproof IP68 underwater explosion-proof |
| Output Signal / Protocol | Dry mechanical switch contacts, 4-20mA inductive pick-off | Adjustable micro-switches, PT100 dual element option | 4-20mA 2-wire, 0.5-4.5V, 0-10V, RS485 Modbus, HART |
| Process Connection | 1/8", 1/4", 3/8", 1/2" (NPT, G, Metric, BSPT) / Flange | Bottom Direct, Back Connection, Every-angle Adjustable Stem | 1/4 NPT, 1/2 NPT, M20x1.5, Tri-clamp Sanitary |
Combining modern manufacturing automation with stringent Quality Assurance protocols to serve high-volume OEM partners worldwide.
Huzhou Accuracy Instrument Co., Ltd. operates a modernized manufacturing site spanning over 3,000 square meters. By integrating computer-controlled automatic calibration benches, laser welding equipment, and thermal shock test chambers, we guarantee reliable performance across large product runs.
Our agile production processes enable short lead times for standard and custom OEM orders alike. Advanced inventory management for critical materials (including seamless Bourdon tubes, hairspring components, and polished stainless cases) ensures resilient supply chain continuity, keeping global projects on schedule.
Customized metrological designs satisfying international regulatory standards across key industrial verticals.
Explosion-proof ATEX/IECEx compliant pressure transmitters and liquid-filled stainless steel gauges built for corrosive H2S and offshore salt-spray environments.
Dual-scale pressure/temperature compound gauges engineered for eco-friendly refrigerants (R32, R410A, R1234yf, CO2), supporting long-term vibration resistance.
Specialized SF6 Gas Density Monitors featuring bimetallic temperature compensation mechanisms to ensure leak-free monitoring in high-voltage switchgear.
Rugged 5V/12V automotive-grade pressure gauges designed for compressed natural gas vehicles, delivering precise readings under dynamic shock and vibration loads.
Stringent quality validation meeting EU, North American, and Asian metrology and industrial standards.
Navigating global regulatory landscapes requires strict compliance across safety, precision, and environmental criteria. Every instrument produced in our Huzhou facility undergoes end-to-end testing prior to shipment.
Our quality management system operates under ISO 9001 certification. Products intended for European markets carry full CE marking under the Pressure Equipment Directive (PED 2014/68/EU). Additionally, our calibration laboratory operates in accordance with ISO/IEC 17025 standards to provide traceable calibration certificates.
To ensure robust zero-leak performance under extreme conditions, 100% of manufactured units are subjected to a rigorous 4-step quality check:
20 Years of Dedicated Experience and Research in Mechanical & Electronic Metrology Solutions.
Huzhou Accuracy Instrument Co., Ltd. specializes in the development, sales, and service of industrial mechanical pressure gauges, bi-metal thermometers, SF6 manometers, and pressure sensors. Our products serve global engineering projects across Mechanical Engineering, Chemical Processing, Food & Beverage, Pharmaceuticals, and High-Tech Power Systems.
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.
We consistently adhere to the core management philosophy of "reasonable prices, accurate delivery, and reliable quality" under our ISO9001:2008 certified operational framework.
20 Specialists focusing on material innovation, smart sensor integration, and compliance with international standards (ISO, API, ASME).
120 Experienced technicians utilizing automated assembly and laser calibration technologies to ensure product durability.
15 Dedicated professionals providing technical guidance and customized OEM solutions across 30+ countries.
Explore our comprehensive selection of compound gauges, capillary thermometers, SF6 monitors, and vibration-resistant pressure indicators.
We strictly follow the concept of "reasonable price, accurate delivery, reliable quality" under our ISO9001 certified manufacturing standard.
Expert insights regarding pressure element selection, temperature compensation, fill fluids, and OEM customization protocols.
Accuracy Instrument
