Explore our flagship range of OEM pressure gauges, diaphragm transmitters, ceramic sensors, and combined thermomanometer units built for rigorous industrial environments.
In modern industrial process engineering, fluid mechanics, and HVAC infrastructure, monitoring thermodynamics requires real-time oversight of two foundational metrics: pressure and temperature. Traditionally, process engineers installed standalone pressure gauges and separate bi-metal thermal sensors. This legacy configuration doubled process tapping connections, increased structural leakage risks, elevated thermal transfer latency, and escalated overall Bill of Materials (BOM) expenditures.
The evolution of the Combined Temperature and Pressure Gauge (frequently designated as a Tridicator or dual-parameter compound instrument) represents a fundamental paradigm shift. By integrating a mechanical Bourdon tube or piezoresistive sensor element alongside a co-axial bimetal coil or RTD capillary probe into a single mechanical process entry, modern system architects achieve synchronized dual diagnostics. As an OEM manufacturer, Huzhou Accuracy Instrument Co., Ltd. supplies industrial markets with combined instruments engineered to withstand aggressive media, severe line vibration, and extreme ambient temperature fluctuations.
Global Original Equipment Manufacturers (OEMs) across Europe, North America, Southeast Asia, and the Middle East face mounting pressures to deliver compact, highly reliable, and cost-efficient thermal fluid units. Purchasing directors and lead instrumentation specialists prioritize suppliers capable of delivering strict adherence to international standards including ASME B40.100, EN 837-1, CE directives, and ISO 9001 quality management benchmarks.
Custom OEM demands go beyond mere scale printing; they require tailored metallurgical wetted parts (AISI 316L Stainless Steel, Hastelloy C276, Brass alloys), specific thread geometries (NPT, BSPP, G-threads, Metric flanged connections), specialized liquid damping (Glycerine, Silicone oil filling to counteract pulsation), and electronic signal integration (such as dual 4-20mA transmitters, Modbus RS485 interfaces, or snap-action electrical switch contacts).
To understand the superior reliability of our combined instruments, it is necessary to examine the dual-sensing mechanics integrated into a unified housing.
Utilizes a high-grade C-type or helical Bourdon tube manufactured from phosphor bronze or AISI 316L stainless steel. Pressure application induces elastic deformation, which is mechanically amplified by a precision sector gear movement to translate line pressure onto a calibrated dial face (Bar, PSI, kPa, MPa).
Integrates a helically wound bi-metallic strip housed within a rigid stem or copper alloy capillary bulb. Differential thermal expansion of the bonded metals generates rotational movement proportional to temperature shifts, displayed accurately in °C and °F without requiring electrical power.
For digital automation requirements, our advanced transmitters combine piezoresistive ceramic or microfused glass strain gauges with integrated PT100/PT1000 RTDs, outputting digital Modbus signals or isolated dual analog current loops (4-20mA).
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 advanced pressure sensors. Our combined temperature and pressure solutions are widely deployed in Mechanical Engineering, Chemical Processing, Food & Beverage Production, Pharmaceutical Manufacturing, and High-Technology Electric Power Appliances.
Established over two decades ago, our pressure gauge manufacturing facility spans 3,000 square meters, equipped with automated production assembly lines, laser welding cells, and high-precision calibration benches. As an industry leader, we integrate research innovation with precision manufacturing to deliver reliable measurement solutions for global enterprise clients.
R&D Department (20 Specialists): Focuses on material innovation, micro-sensor integration, and strict compliance with international standards (ISO, API, ASME).
Production Workforce (120 Technicians): Utilizes automated assembly, zero-defect quality control, and automated laser calibration technology.
Sales & Service Unit (15 Professionals): Delivers 24/7 technical assistance and custom OEM engineering support across 30+ countries worldwide.
Annual production capacity exceeds 2 million units. Product range covers industrial-grade instruments including stainless steel gauges, black steel pressure gauges, shock-proof glycerine-filled gauges, SF6 density monitors, bi-metal thermometers, and high-accuracy pressure transmitters.
Our products are exported worldwide, holding major global certifications (ISO, SGS, CE) and recognized globally for superior corrosion resistance and ±0.5% precision calibration options.
Our in-house testing laboratories perform 100% pressure cycle impulse tests, burst pressure evaluations, and harsh climate thermal simulations, adhering stringently to ISO 9001 and ISO 17025 operating protocols.
Continuous research and development drives our standing for "zero-leak" housing performance under extreme field conditions, backed by a comprehensive one-year factory warranty.
We adhere strictly to the operating philosophy of "reasonable pricing, exact delivery schedules, and zero-defect quality," ensuring production standards exceed ISO9001:2008 benchmarks.
Procuring combined temperature and pressure gauges directly from a specialized Chinese manufacturer offers substantial strategic commercial advantages to global OEMs, system integrators, and distributors:
Our Huzhou production plant houses end-to-end tooling, metal stamping, CNC precision turning, Bourdon tube forming, automated dial printing, laser welding, and automated fluid-filling machinery. Vertical integration minimizes third-party markups and maintains strict quality control at every stage of production.
We specialize in custom engineering requests. Global buyers can specify custom brand artwork on dial faces, specialized scale units (Dual Bar/PSI, kPa/°C), specific capillary tube lengths (up to 10 meters), unique flange mounting configurations, and specialized protective rubber covers or shockproof cases.
With an agile R&D team of 20 specialists, original design concepts and sample requests transition to physical working prototypes within 7 to 14 business days. Our 2-million-unit annual capacity ensures reliable volume scaling during market demand surges.
Leveraging regional raw material supply chains (high-grade stainless steel coils, brass extrusions, and specialized sensing diaphragms) enables Huzhou Accuracy Instrument to deliver world-class precision without the inflated overhead of Western brands.
Our dual-parameter instrumentation operates reliably across diverse global industrial environments:
Installed on commercial hydronic heating systems, hot water boilers, and chillers. The combined thermomanometer dial provides boiler technicians with immediate, single-point visibility into line water pressure and fluid temperature, safeguarding heating infrastructure against over-pressurization and thermal stress.
Utilizing our 316 Stainless Steel flanged diaphragm dual gauges and thin-film pressure transmitters. Engineered to withstand highly corrosive media (such as sour gas, caustic fluids, and hydrocarbons) while retaining fine accuracy under intense line pulsation.
Our specialized SF6 Gas Density Monitors measure both pressure and temperature to automatically compute gas density. Crucial for arc suppression in high-voltage substations, preventing electrical faults caused by gas leaks or cold-weather condensation.
Clean-in-Place (CIP) and Sterilize-in-Place (SIP) skid systems require hygienic diaphragm-sealed combined sensors. Smooth, polished stainless steel process connections eliminate bacteria traps while delivering reliable data during high-temperature washdowns.
Severe fluid power applications require liquid-filled combined gauges or glass microfused pressure transducers. They monitor reservoir oil temperature and system fluid pressures, preventing pump cavitation and fluid breakdown under heavy duty cycles.
Specialized oxygen pressure gauges and remote reading capillary thermometers operate in extreme sub-zero environments, maintaining seal integrity and precise calibration for medical gas manifolds and bulk liquid storage units.
When submitting a Request for Quotation (RFQ) for OEM combined temperature and pressure gauges, engineering procurement teams should review the following key specification parameters:
Verify chemical compatibility with the process fluid. Standard water and air lines can utilize brass connections. Corrosive media, steam, or aggressive chemical lines require AISI 304, 316L stainless steel, or diaphragm isolation seals.
Select working pressure range so normal operating pressure falls within 35% to 75% of full-scale value. Thermal ranges must account for both steady-state line temperatures and peak thermal sterilization limits.
If the installation site experiences mechanical vibration or rapid pressure pulsation, specify liquid-filled cases (Glycerine for standard temperatures, Silicone oil for extreme thermal swings) or internal pulsation dampeners.
Choose from direct bottom entry, back entry, panel-mount front flange, or remote capillary lead mountings. Standard thread profiles include 1/4" NPT, 1/2" NPT, G1/2", and customized tri-clamp sanitary connections.
As Industry 4.0 adoption accelerates, the industrial measurement landscape is shifting toward hybrid smart sensing instrumentation. Huzhou Accuracy Instrument Co., Ltd. is leading this transition by integrating traditional mechanical gauge reliability with micro-power digital transmitters:
Developing ultra-low-power LoRaWAN, NB-IoT, and WirelessHART integrated pressure and temperature sensors capable of transmitting dual metrics wirelessly to cloud SCADA systems over long distances without field wiring costs.
Integrating digital microprocessors that monitor high-frequency pressure spikes and thermal cycles, analyzing stress trends to alert maintenance operators before component failure occurs.
Replacing conventional organic oil fillings with solid-state sputtered thin-film sensors on stainless steel diaphragms, ensuring zero signal drift and lifetime resistance against media contamination.
Expert technical answers to standard engineering and OEM procurement inquiries regarding combined temperature and pressure instruments.
Browse our extended line of specialized mechanical gauges, remote reading capillary thermometers, and industrial pressure transmitters.
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