The Nagano Keiki GC35 is a digital pressure gauge designed for monitoring and control in hydraulic and water pressure lines. It integrates a vapor-deposited semiconductor pressure sensor, digital display, and optional analog output in a compact, waterproof unit. Ideal for industrial machinery, hydraulic systems, and water pressure monitoring.
The Nagano Keiki GC35 digital pressure gauge combines a highly reliable Chemical Vapor-Deposited Semiconductor Strain Gauge (SS sensor) with a 4-digit LED display and optional 4~20mA analog output. It measures air, water, and oil, with wetted parts made of SUS630 (17-4PH) diaphragm and SUS316 joint. The unit supports gauge pressure ranges from 0~0.5 MPa to 0~50 MPa and vacuum pressure ranges from -0.1~0.5 MPa to -0.1~2 MPa, with a display accuracy of ±(1.0%F.S.+1digit).
Designed for durability, the GC35 features an ADC12 aluminum die-cast case with nickel plating, PC, and NBR materials. It operates in environments without flammable or explosive gases, with an operating temperature range of -20~70°C and fluid temperature range of -20~70°C. Protection class is IP67 for pressures above 1 MPa and IP65 for 1 MPa or less. The gauge includes user-selectable NPN or PNP open collector outputs, optional analog output, and functions such as loop check, display scaling, zero adjustment, and internal time constant filters (25 ms to 10 s).
The GC35 is engineered for critical applications in industrial machinery monitoring, hydraulic line monitoring, and water pressure control systems. Its robust construction and high accuracy make it particularly valuable in oil and gas industry environments, where it measures high-viscosity fluids and withstands harsh conditions. In chemical industry settings, the gauge’s corrosion-resistant wetted parts (SUS630, SUS316) and optional diaphragm coatings (e.g., FEP) ensure reliable performance with aggressive fluids. The food and beverage industry and pharmaceutical industry benefit from its sanitary design and compatibility with propylene glycol fill fluids, while water treatment applications leverage its ability to handle fluids containing solids.
The optional 4~20mA analog output and comparator functions enable seamless integration into automated control systems, and the LED ring provides immediate visual anomaly detection. For hazardous environments, explosion-proof variants such as the KD41 (flameproof) and KH55 (intrinsically safe, marine) are available. The GC35 is part of Nagano Keiki’s broader range of pressure instruments, including digital pressure gauges like the GC61 and GC7□ series, as well as transmitters such as the KH41 and KH43.
We can source and supply the Nagano Keiki GC35 digital pressure gauge and related parts across major industrial regions, ports, and shipbuilding hubs worldwide, including:
Nagano Keiki stands as a global leader in the field of pressure measurement technology, providing an extensive portfolio of high-performance instruments essential for industrial precision and safety. With a legacy of over a century, the company is renowned for manufacturing durable and highly accurate pressure gauges, pressure sensors, and pressure transmitters. These critical components are expertly engineered to perform in the most demanding environments across a range of key sectors. In the marine industry, Nagano Keiki’s instruments are trusted for their ability to withstand the rigors of the sea, providing vital, real-time insights for vessel monitoring systems to ensure safe and efficient maritime operations. Within the oil and gas sector, their products are indispensable for high-pressure applications and the measurement of high-temperature or corrosive fluids, playing a crucial role in the processes of oil and natural gas extraction, storage, and transportation. Furthermore, in the petrochemical industry, their specialized and explosion-proof solutions are utilized in refineries and processing plants to control and monitor critical processes, where precision measurement is paramount for safety and operational integrity. By integrating advanced technology with robust design, Nagano Keiki’s instruments provide the reliability and performance required for these essential industries.
Nagano Keiki offers a diverse range of pressure gauges designed to provide accurate and reliable pressure indication in various industrial and specialized applications. The unwavering performance of these instruments is ensured by their robust stainless-steel construction and key features like glycerine-filled interiors, which provide superior vibration and pulsation resistance for a long-term service life in harsh environments.
This category includes the A-Series, with models such as A20, A10, A15, AA, AC, AE, AG, and AJ. These are standard bourdon tube pressure gauges compliant with JIS B 7505-1: 2015. They have a simple construction that makes them easy to handle and are applicable to a wide variety of industrial applications.
This category includes the B-Series, with models such as BA, BC, BE, BG, BJ, BL and BA10, BC10, BE10, BG10, BJ10, BL10, BA12, BC12, BE12, BG12, BJ12, BL12, BA15, BC15, BE15, BG15, BJ15, BL15. These are bourdon tube pressure gauges made in accordance with the JIS B 7505-1 standard and are engineered for more demanding industrial environments.
The D and DG-Series, with models such as DG12, DG16, DG17, DG26, DG55, DG56, DG57, DG58, DG70, DG80, DG85, DG87, DG93, DG94, DG95, DG96, DG97, and DG98, are designed for measuring the pressure difference between two points. They can also be used for measuring tank liquid levels or combined with an orifice to measure flow in a pipeline.
The GC-Series provides high-accuracy electronic readings. This category includes models like GC15, GC16, GC31, GC61, GC62, GC66, GC67, and GC91, which are useful for applications requiring a clear, digital display of pressure values.
The GV-Series is filled with liquid (glycerin) to protect the internal moving parts from wear caused by vibration. This makes them suitable for use in environments with constant vibration, extending the life of the gauge. This category also includes the Compact Glycerin Pressure Gauge, and the GV95 and GV97 models for smaller applications.
Pressure Sensors & Transmitters
These products convert pressure into an electrical signal, enabling precise monitoring and automated control in complex systems. Their unparalleled accuracy is achieved through advanced sensing technology like Bourdon tube and Semiconductor Strain Gauge (SS sensor) technologies. The instruments, including models with non-liquid filled technology, are tailored for specific requirements like high-temperature and high-viscosity applications, ensuring clean and safe operation.
Pressure Switches
Nagano Keiki’s pressure switches are essential for safety and control systems, automatically triggering an action when a set pressure threshold is met. These products are a professional standard of safety, with many models holding ATEX and IECEx certifications for use in explosion-proof environments and critical applications like refineries.
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