Explore our factory-direct OEM dual oil pressure and temperature sensing instruments, microfused silicon sensors, and shock-resistant industrial manometers engineered for mission-critical operations.
In high-performance automotive powertrains, experimental general aviation aircraft, heavy marine diesel engines, and stationary hydraulic machinery, simultaneous real-time monitoring of lubricant temperature and hydraulic line pressure is vital for operational safety and equipment longevity. The historical solution involved installing two distinct instruments—an arrangement that consumed valuable panel dashboard area, increased electrical routing complexity, and added unnecessary payload weight. The specialized dual instrument design, often benchmarked against standard Uma gauge configurations, integrates both thermal and pressure measuring elements into a compact 2-1/4 inch (57mm) or 3-1/8 inch (80mm) standard housing.
From an engineering standpoint, integrating mechanical Bourdon tube assemblies or piezoresistive semiconductor transducers with liquid-expansion bimetallic systems or precision NTC/PT100 thermistor circuits requires advanced thermal isolation and cross-talk attenuation. Leading Chinese OEM factories have pioneered micro-machined diaphragm isolators and dual-concentric movement movements that allow high accuracy ($\pm 1.0\%$ to $\pm 0.5\%$ Full Scale) within severe vibration environments (up to 20G peak acceleration).
Utilizes coaxially mounted pointer shafts driven independently by precision helical Bourdon tubes and bimetallic coils, allowing zero mechanical interference on a single dial face.
Internal filling with high-purity 99.8% liquid silicone stabilizes internal mechanics against severe engine harmonics, preventing pointer flutter and internal wear.
Combines glass microfused pressure sensors with digital signal conditioning (DSC) circuits to output combined analog 0.5-4.5V and digital CAN-bus signals.
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.
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 global recognition for corrosion resistance and $\pm0.5\%$ 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 operational conditions, backed by a comprehensive one-year warranty.
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 systems.
Selecting an OEM partner for precision instrumentation requires evaluating supply chain reliability, material traceability, technical innovation, and cost structure. China’s specialized instrument hubs—specifically located in Zhejiang province—offer distinct competitive advantages for global OEMs, distributors, and equipment builders sourcing Uma oil temperature and pressure gauges and custom industrial sensor arrays.
Chinese OEM factories leverage automated Swiss-type CNC turning centers and automated laser-welding systems. Pressure sensing Bourdon tubes are crafted from imported phosphor bronze (C5191) or high-grade 316L stainless steel, guaranteeing zero hysteresis over 100,000+ impulse cycles. Thermocouple and bimetallic elements undergo vacuum annealing to prevent thermal drift over extended operational lifespans.
From custom dial graphics, color-coded warning arcs (green operating zone, yellow caution zone, red line limit), dual scale calibration (PSI/Bar, °F/°C), to specialized mounting flanges and electrical connector standards (Deutsch DT, Packard, 1/8" NPT, 1/4" NPT, M10x1 threads), OEM factories deliver fully tailored private-label solutions with low MOQ thresholds.
By housing die-casting, capillary drawing, dial printing, movement assembly, fluid filling, and automated laser calibration under one roof, production lead times are shortened by up to 40% compared to Western suppliers, while reducing unit procurement costs by 30% to 50%.
Every batch of OEM gauges undergoes helium leak testing, high-temperature environmental baking, liquid immersion IP67 testing, and shock vibration verification. Standard production yields zero-leakage performance under extreme ambient operating environments ranging from -40°C to +150°C.
The industrial measurement landscape is undergoing a technological transition driven by smart manufacturing, telemetry integration, and zero-defect safety requirements. Traditional analog mechanical gauges are increasingly combined with digital electronics to satisfy both local analog viewing and remote telemetry data transmission.
Replacing traditional strain gauges with silicon strain gauges fused at high temperature to stainless steel diaphragms. This process eliminates organic glues, yielding superior temperature stability, zero thermal degradation, and extreme overpressure tolerance (up to 300% rated capacity).
Modern commercial vehicles, agricultural machinery, and light aircraft demand direct communication with Engine Control Units (ECU). Next-generation OEM dual gauges feature integrated analog-to-digital converters sending pressure and temperature telemetry across standardized CAN-bus protocols.
Phase-out of traditional hazardous liquid fills in favor of food-grade silicone fluids and internal dry-dampening mechanical escapement mechanisms, satisfying environmental regulations (RoHS, REACH) while preserving anti-vibration performance.
Dual oil temperature and pressure instrumentation manufactured by Huzhou Accuracy Instrument Co., Ltd. serves across critical sectors requiring precise thermal and hydraulic monitoring under harsh operating conditions.
| Industry Sector | Operating Challenges | Gauge / Sensor Specification | Engineered OEM Solution |
|---|---|---|---|
| General Aviation & Experimental Aircraft | Cockpit space limits, high-frequency engine vibration, extreme altitude temperature variations. | Dual Uma-style 2-1/4" gauge, 0-100 PSI, 100-300°F range, silicone filled, light alloy casing. | Coaxial dual pointers, internal thermal compensation coil, shock-proof movement mounting. |
| High-Performance Racing & Motorsport | Rapid oil temperature spikes, hydraulic pressure surges, harsh lateral G-forces. | Microfused glass sensor with LED backlit dial, 0-10 Bar pressure, 0-150°C temp range, IP67 rating. | Fast thermal response sensor probe, peak value hold electronic memory, anodized aluminum bezel. |
| Marine Propulsion & Auxiliary Gensets | Salt spray corrosion, continuous 24/7 thermal stress, heavy humidity. | 316L Stainless steel housing, flanged diaphragm isolator, capillary remote reading bulb. | Hermetically sealed glass lens, anti-corrosive gold-plated electrical contacts, CE & ABS approval compliance. |
| Heavy Mobile Equipment & Mining HPUs | Severe mechanical shocks, dust ingress, wide fluid viscosity variations. | Heavy-duty 63mm/100mm oil-filled black steel gauge or AKS thin-film pressure transmitter. | Reinforced Bourdon tube, IP65 waterproof housing, over-pressure relief plug safety design. |
| Power Grid SF6 Electrical Switchgear | Critical gas density and pressure stability requirements for insulation. | Precision SF6 gas density monitor with electrical contacts and temperature compensation. | Bimetal-compensated mechanical movement preventing false low-pressure alarms during freeze cycles. |
When requesting quotes or initiating OEM/ODM production runs with Chinese manufacturing plants, international procurement teams must evaluate key technical specifications to ensure exact field compatibility and long-term durability.
C-Type Bourdon Tube: Cost-effective, ideal for steady hydraulic pressures up to 600 PSI (40 Bar).
Helical Bourdon Tube: Recommended for higher pressure scales (up to 10,000 PSI / 700 Bar) with enhanced fatigue resistance.
Glass Microfused Silicon Transducer: Preferred for zero mechanical moving parts, ultra-high accuracy ($\pm0.25\%$ to $\pm0.5\%$ FS), and direct ECU electronic interface integration.
Direct Vapor Pressure Capillary: Mechanical remote reading, requiring no electrical power supply, suitable for rugged mechanical setups.
Bimetallic Helical Element: Direct bottom or back mount, solid stainless steel probe, excellent for engine sump temperature measurement.
Resistance Temperature Detectors (RTD/PT100) or Thermistors: Fast digital response time (t90 < 2 seconds), linear voltage output for smart telemetry panels.
A dual gauge saves vital instrument panel real estate (integrating two functions into a single 57mm or 80mm hole cutout), lowers structural mounting weight, simplifies harness routing, and provides operators with immediate side-by-side visual correlation between engine oil thermal buildup and oil line hydraulic pressure drop.
Our facility manufactures standard mechanical Bourdon pressure gauges at Class 1.6% or Class 1.0% Full Scale accuracy. For high-precision requirements, our glass microfused pressure sensors and electronic transducers achieve $\pm0.5\%$ FS to $\pm0.25\%$ FS accuracy, fully tested in our ISO/IEC 17025 compliant calibration laboratory.
Liquid silicone dampens mechanical pointer vibration caused by engine harmonics, lubricates internal gears and movements to eliminate premature mechanical wear, prevents internal condensation behind the lens, and protects internal components against corrosive atmospheric moisture.
Yes. As a direct OEM manufacturer, we offer full private-label customization including custom company artwork, logos, color-coded operating arcs (green/yellow/red), dual unit printings (PSI/Bar, kPa/MPa, °C/°F), and specialized bevel/case plating options (black steel, chrome, 304/316 stainless steel).
We supply all international thread configurations including NPT (1/8 NPT, 1/4 NPT, 1/2 NPT), BSP/G (G1/4, G1/2), Metric (M10x1, M12x1.5, M20x1.5), and custom SAE flange mounts to match regional pipeline and block standards.
Browse additional pressure transmitters, bimetal thermometers, capillary remote reading gauges, and specialized SF6 gas density monitors manufactured for worldwide delivery.
Accuracy Instrument