Explore our top-tier precision-engineered pressure gauges, vibration-resistant meters, and smart sensors manufactured under strict ISO and CE compliance standards.
As the global clean energy transition accelerates, Compressed Natural Gas (CNG) continues to serve as a pivotal bridge fuel for transit systems, heavy transport, and municipal fleets worldwide.
In the realm of alternative fuel vehicles (NGVs) and industrial gas distribution, the CNG gas pressure gauge serves a dual mandate: accurate volumetric fuel monitoring and critical operational safety. Operating under extreme pressure ranges—typically up to 200 bar (2,900 psi) to 350 bar (5,000 psi)—CNG pressure instruments must endure severe vibration profiles, harsh ambient temperature swings (-40°C to +120°C), and chemical exposure without losing calibration or structural integrity.
As a leading OEM CNG gas pressure gauge manufacturer, Huzhou Accuracy Instrument Co., Ltd. addresses the evolving demands of international Tier-1 automotive integrators, refueling station builders, and gas manifold system assemblers. Modern procurement managers demand far more than basic dial indicators; today’s global market requires integrated smart sensors, non-contact Hall-effect electrical output signals (such as 0.5V–4.5V or 0–190 ohm resistive matching), dual-scale customized dials, and multi-tier explosion-proof certifications (ECE R110, ISO 15500, ATEX).
Constructed with high-tensile brass or 316L stainless steel Bourdon tubes, engineered to withstand burst pressures up to 4x maximum operating scale without explosive fragmentation.
Combines visual mechanical dials with non-contact Hall IC sensors (5V/12V input) to send accurate real-time pressure telemetry directly to vehicle ECUs or digital gas dashboards.
Equipped with internal movement silicone damping mechanisms or liquid filling (glycerine/silicone oil), suppressing needle flutter caused by engine chassis resonance.
How Huzhou Accuracy Instrument combines smart factory automation with raw material control to provide global B2B clients with cost efficiency and zero-defect reliability.
Automated Laser Welding • Temperature-Compensated Calibration • 100% Helium Leak Testing • ISO 9001:2008 & ISO 17025 Compliant Lab
In the highly competitive landscape of industrial metrology, supply chain stability and rapid OEM adaptation are vital. Operating from our state-of-the-art 3,000-square-meter facility in Huzhou, Zhejiang, we leverage automated assembly lines, robotic socket soldering, and laser calibration equipment to maintain exceptional precision across multi-million unit production runs.
Our fully integrated supply chain spans from raw brass forging and CNC precision thread machining to delicate hairspring winding and 100% automated pressure cycle testing. This vertical integration eliminates third-party dependencies, allowing us to guarantee consistent lead times, flexible Minimum Order Quantities (MOQs), and tight cost controls that pass significant margin benefits directly to our OEM partners.
| Specification Parameter | Standard Mechanical Gas Gauge | OEM Auto CNG Gauge (5V/12V Hall) | Industrial High-Pressure Transducer |
|---|---|---|---|
| Nominal Dial Size | 50mm, 63mm (2.5"), 100mm | 50mm (2"), 27mm sub-compact | Inline Sensor / 63mm Dial Option |
| Pressure Operating Range | 0 to 400 Bar / 6,000 PSI | 0 to 200 Bar / 250 Bar (0-3600 PSI) | 0 to 600 Bar (Programmable) |
| Accuracy Class | ±1.6% or ±2.5% Full Scale | ±1.6% (Mechanical) / ±0.5% (Sensor) | ±0.5% or ±0.25% Full Scale |
| Signal Output Options | None (Visual Dial Only) | 0.5V - 4.5V, 0-190Ω, 10-180Ω | 4-20mA, 0-10V, RS485 Modbus |
| Wetted Parts Material | Brass / Bronze Alloy | Heavy-duty Forged Brass / SS316 | Stainless Steel 316L / Ceramic |
| Ingress & Explosion Safety | IP44 / IP54 Standard | IP67 Waterproof / ECE R110 Certified | IP65 / Ex d IIC T6 Gb Explosion-Proof |
Our pressure measurement instruments are engineered to perform under demanding conditions across critical global infrastructure projects.
Directly integrated into high-pressure CNG reducers and regulators for passenger cars, buses, and commercial trucks. Provides driver dashboard fuel level readout via 5V/12V optical or magnetic sensors.
High-accuracy 100mm stainless steel shock-proof gauges and differential pressure transmitters mounted on cascade storage banks, compressor skids, and fast-fill gas dispensers.
Heavy-duty diaphragm seals and ceramic transmitters deployed in tube trailers and pressure reduction stations (PRS) transporting bulk natural gas across remote industrial zones.
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.
20 Specialists: Focuses on material innovation, smart sensor integration, dual-output signal circuits, and strict compliance with international standards (e.g., ISO, API, ECE R110).
120 Technicians: Utilizes automated assembly, robotic socket soldering, and laser calibration technologies to ensure product durability, repeatability, and high accuracy.
15 Professionals: Provides 24/7 technical assistance, custom OEM thread/dial engineering, and cross-border logistical support across 30+ countries globally.
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.
Common questions answered by our chief engineering and international trade support team.
Explore our broader industrial lineup including bimetallic thermometers, explosion-proof electric contact gauges, and remote capillary transmitters.
Need custom dial engineering, specialized electrical output harnesses, or factory-direct B2B pricing? Our R&D team is ready to assist your project requirements.
Request an OEM Technical Quote
Accuracy Instrument
