Explore our CE-certified, high-reliability pressure and temperature instruments engineered for extreme hydraulic, automotive, and industrial environments.
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 pressure sensors. 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 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.
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 management.
An in-depth analysis of dual-function oil pressure and temperature instrumentation in severe-duty industrial and automotive power trains.
In high-stress mechanical equipment—such as marine diesel engines, off-highway mining rigs, stationary power stations, and hydraulic power units (HPUs)—lubrication integrity is the primary operational safeguard. Monitoring oil pressure without simultaneously tracking oil viscosity changes induced by temperature spikes leaves machinery exposed to catastrophic mechanical failure. An integrated Oil Pressure Temperature Dual Gauge merges two independent sensing mechanisms into a single compact dial assembly, optimizing control panel real estate while providing real-time dual-variable monitoring.
Under heavy mechanical friction, internal combustion oil thins out exponentially as fluid temperature increases. A standard pressure gauge might report nominal pressure, but if the temperature exceeds critical operational thresholds (e.g., >120°C in heavy-duty diesel engines), the oil film strength collapses. The dual gauge solves this diagnostic gap by pairing a Bourdon tube or piezoresistive element with a bimetallic spring or capillary bulb thermometer. This dual configuration grants operators immediate diagnostic capability, allowing rapid response to thermal degradation, pump wear, or oil channel blockages.
Procuring dual gauges for European and global markets requires absolute adherence to rigorous regulatory standards. As a premier CE-certified supplier, Huzhou Accuracy Instrument Co., Ltd. builds each dual gauge in strict accordance with European Directives, specifically the Pressure Equipment Directive (PED) 2014/68/EU and EN 837-1 / EN 13190 engineering guidelines.
| Standard / Directive | Regulatory Scope | Engineering Requirement | Huzhou Accuracy Standard Compliance |
|---|---|---|---|
| PED 2014/68/EU | Pressure Equipment Safety | Burst pressure protection, material traceability | 100% Hydrostatic overpressure test at 150% full scale |
| EN 837-1 | Bourdon Tube Pressure Gauges | Dial graduation, accuracy class, pointer design | Class 1.0 / Class 1.6 accuracy rating options |
| EN 13190 | Dial Thermometers | Bimetallic sensor accuracy, thermal response time | Rapid response bimetallic helical coil structure |
| IP65 / IP67 (EN 60529) | 58Ingress Protection Rating | Hermetic sealing against dust, water spray, jetting | Laser-welded case-to-socket seals with liquid fill |
| ATEX 2014/34/EU | Explosion-proof hazardous zones | Spark-proof electrical contacts, flameproof casing | Ex d IIC T6 Gb explosive atmosphere certification |
Obtaining CE certification guarantees that our dual gauges comply with rigorous safety metrics, including structural fatigue limits under continuous pulsation, flameproof enclosure resistance, and non-toxic damping fluid formulation. For international OEMs, purchasing CE-marked instrumentation simplifies regulatory clearance across North America, the European Union, the Middle East, and Asia-Pacific industrial zones.
The global demand for dual pressure-temperature instruments is experiencing substantial growth, driven by key macro-economic factors:
Tier-4 Final and Stage V heavy equipment require tighter engine operating tolerances. Real-time dual monitoring prevents engine thermal stress and unexpected field downtime during continuous earthmoving operations.
Commercial shipping fleets and auxiliary marine power systems demand corrosion-resistant AISI 316L dual gauges that resist aggressive saline environments while maintaining precision under severe vessel vibration.
Data centers, hospital backup power units, and remote microgrids rely on dual electric contact pressure-temperature gauges for automated warning alarms and emergency generator shutdown triggers.
Custom-engineered deployment frameworks optimized for specific harsh operating environments.
Challenge: Continuous high-frequency pulsation in hydraulic pumps rapidly degrades pointer mechanisms and fatigues internal Bourdon tubes.
Engineering Solution: Huzhou Accuracy delivers fluid-filled (Glycerine or Silicone oil) dual gauges housed in 304/316 stainless steel casings. The viscous dampening media stabilizes the internal gearing, dampens pointer flutter, and lubricates mechanical contact points for an extended operational lifespan.
Challenge: Constant atmospheric salt spray, high humidity, and extreme thermal cycling cause gauge lens fogging and socket corrosion.
Engineering Solution: Our CE-certified marine dual gauges feature IP67 hermetically sealed glass-to-metal joints, solid front safety baffles, laser-welded diaphragm seals, and anti-corrosive bronze or 316L wetted parts built for long-term saltwater exposure.
Challenge: Dust ingress, extreme ambient temperature variations (-40°C to +85°C), and sudden physical shock during rough earthwork.
Engineering Solution: Impact-resistant phenolic casing paired with shatter-proof safety glass windows and high-torque bimetallic helical temperature coils engineered to absorb multi-axis mechanical impacts up to 50g shock rating.
The manufacturing process at Huzhou Accuracy Instrument Co., Ltd. incorporates state-of-the-art material selection and laser automated assembly:
Recognizing that global equipment manufacturers demand tailored instrumentation, Huzhou Accuracy provides full OEM/ODM integration support:
Pioneering the next era of smart dual instrumentation, IoT connectivity, and green hydrogen power applications.
Developing hybrid dual gauges that retain local mechanical pointer display functionality while embedding low-power 4-20mA or RS485 Modbus digital transmitters for direct PLC and SCADA system integration.
Incorporating LoRaWAN and NB-IoT wireless communication modules directly inside the 100mm dual gauge casing, enabling predictive maintenance cloud alerts for fleet managers prior to component failure.
Engineering hydrogen-compatible dual pressure-temperature transmitters using gold-plated diaphragms and specialized embrittlement-resistant alloy sockets designed for zero-emission fuel cell cooling loops.
Direct answers to crucial procurement, technical, and regulatory questions from engineering teams worldwide.
A dual oil pressure and temperature gauge streamlines control panel design by consolidating two critical sensor inputs into a single mounting cutout. This reduces installation labor, lowers plumbing hardware costs, minimizes potential leakage points in oil lines, and provides engine operators with a synchronized visual reading of thermal and hydraulic conditions in real time.
CE Certification verifies that the gauge complies with essential European health, safety, and environmental protection standards. For our instrumentation, this includes meeting the Pressure Equipment Directive (PED 2014/68/EU) for mechanical safety under pressure, EN 837-1 standards for dial graduation accuracy, and EN 60529 IP ratings for ingress protection against dust and moisture.
High-frequency vibrations in diesel engines and hydraulic pumps cause mechanical linkage wear, pointer fluttering, and premature recalibration drift. Filling the gauge casing with viscous glycerine or silicone fluid dampens mechanical shocks, lubricates moving internal gears, prevents lens condensation in extreme humidity, and extends gauge operational life by up to 300%.
No. Huzhou Accuracy uses isolated dual sensing paths. The pressure path relies on an isolated Bourdon tube or diaphragm chamber, while the temperature path utilizes a thermally conductive sealed bimetallic coil or flexible armored capillary stem. The two systems operate independently within the casing, preventing cross-variable interference and maintaining strict ±1.0% to ±1.6% full-scale accuracy ratings.
Yes. As a leading manufacturer with an annual output exceeding 2 million units, we offer complete OEM/ODM customization. We tailor dual-scale dial ranges (e.g., 0-10 Bar / 0-150 PSI and 0-120°C / 30-250°F), customized mounting flanges, specialized thread connections (NPT, BSP, Metric), company logo printing, electric alarm contacts, and capillary length adjustments to meet exact OEM project specifications.
Complete your industrial control panel with our certified range of specialized pressure gauges, explosion-proof switches, and transmitters.
Accuracy Instrument
