High-precision pressure transmitters, bimetallic thermometers, and specialty monitoring instrumentation manufactured to ISO 9001 and CE specifications.
Founded over two decades ago, Huzhou Accuracy Instrument Co., Ltd. has scaled into a world-class OEM/ODM pressure gauge and temperature gauge manufacturer. Operating from a modern 3,000-square-meter precision manufacturing facility, we integrate automated laser calibration, robotic assembly lines, and severe-environment simulation labs.
Our engineering capabilities encompass mechanical Bourdon tube gauges, bi-metal thermometers, SF6 gas density monitors, and solid-state ceramic microfused pressure transmitters. Serving over 30 countries across mechanical engineering, chemical processing, HVAC, energy, and medical equipment sectors, we maintain zero-defect standards backed by rigorous testing protocol.
Adhering strictly to ISO 9001 benchmark systems to guarantee zero-leak, long-cycle durability.
Analysis of technological shifts, digital transformation, decarbonization mandates, and material science innovations driving the future of process measurement.
Modern industrial plants require seamless transition from mechanical pointer dials to digital output signals (4-20mA, Modbus RS485, HART). Dual-function gauges combining local analog display with remote electronic transmitters reduce installation costs while improving monitoring redundancy.
Heavy machinery and hydraulic applications subject sensing components to intense fatigue. OEM advancements in liquid filling (glycerin/silicone), shatter-proof safety glass, and laser-welded movement assemblies increase operational lifespans under severe mechanical stress by over 300%.
For aggressive chemicals, pharmaceutical production, and food processing, standard brass connections are inadequate. Implementation of diaphragm seals (AISI 316L, Hastelloy C276, Tantalum) prevents process media from contacting internal mechanism elements, ensuring pure hygiene and chemical immunity.
In thermal hydronic systems, boiler installations, and refrigeration loops, real-time tracking of both pressure and temperature at a single tapping point is paramount. Traditional installations required separate process penetrations, doubling installation labor, leak paths, and maintenance overhead.
Our Combined Pressure & Temperature Gauges (Thermo-Manometers) utilize a co-axial arrangement. Temperature measurement is achieved via a bi-metallic strip coiled into a helical spring inside a brass or stainless stem. As temperature changes, the metals expand at differing thermal expansion coefficients, imparting rotational force directly to the pointer spindle. Concurrently, fluid pressure enters the Bourdon tube element, displacing the tip mechanically to translate system static pressure onto the dual-scale dial face. This engineered synchronization guarantees full systemic fidelity without cross-parameter distortion.
When high frequency response, ultra-low hysteresis, and long-term signal drift stability are mandated, solid-state piezoresistive technology supersedes purely mechanical movements. Our OEM Ceramic Sensor Transmitters utilize 96% Al₂O₃ alumina ceramic diaphragms printed with thick-film strain gauge bridges. The intrinsic hardness of alumina offers exceptional resistance to abrasive media and dynamic pressure spikes.
For ultra-high-pressure hydraulic circuits and oil-gas applications, our Glass Microfused Silicon Sensors eliminate organic epoxy bonds entirely. Silicon strain gauges are micro-fused with glass at temperatures exceeding 500°C onto a stainless steel diaphragm (17-4PH or 316L). This creates a monolithic metallic structure capable of enduring tens of millions of pressure cycles without zero-point drift or mechanical degradation.
Custom OEM sensor configurations engineered to solve distinct operational challenges across demanding enterprise domains.
Sulfur hexafluoride (SF6) serves as a critical dielectric insulator in high-voltage circuit breakers. Leaks cause catastrophic insulation failure and environmental damage. Our temperature-compensated SF6 Density Monitors continuously track pressure-temperature relationships, insulating against ambient temperature swings to deliver absolute gas density readout and automated alarm contact switching.
Alternative fuel vehicles operate under extreme pressure fluctuations (0-200+ bar) and violent road vibrations. Our CNG Pressure Gauges feature shatter-proof polycarbonate lenses, explosion-proof burst discs, and integrated electrical output micro-switches to interface directly with vehicle fuel management computers.
Chemical environments demand ATEX-certified flameproof and intrinsically safe equipment. Our Model 2088 and Explosion-Proof Contact Bimetal Thermometers feature heavy-duty die-cast aluminum or stainless housings, hermetically sealed electrical contacts, and NACE MR0175 compliant wetted materials for sour gas resistance.
District heating networks and commercial chillers demand high reliability at scale. We supply high-volume OEM clients with direct-mount back and bottom connection thermo-manometers featuring custom dial artwork, dual Bar/PSI and °C/°F scales, and quick-connect fittings for efficient assembly line installation.
Strategic supply chain solutions tailored for Tier-1 equipment manufacturers, systemic integrators, and global industrial distributors.
We provide comprehensive brand localization: custom dial branding, private-label artwork, color-coded pressure danger zones, scale dual units (kPa, MPa, PSI, Bar, °C, °F), and customized housing materials (304SS, 316SS, forged brass, black painted steel).
Wetted threads manufactured to exact international standards including NPT (1/8", 1/4", 1/2"), BSP/G thread, metric threads (M20x1.5), quick-fit sanitary tri-clamp fittings, and custom flange geometry to match customer manifold specs.
Eliminate risk through our dual-sourcing material strategies, volume-buffer stocking plans, ISO 17025 calibration certificates, and optimized freight logistics ensuring on-time delivery across North America, Europe, and Asia-Pacific.
Explore our full array of low-pressure mechanical gauges, microfused silicon sensors, and SF6 gas density monitoring systems.
Expert technical insights regarding selection, installation, engineering standards, and OEM customization.
Accuracy Instrument