The Nagano Keiki GC55 digital differential pressure gauge measures gas and liquid pressures with high precision. Featuring 3 1/2 or 4-digit LED displays, configurable analog and comparator outputs, and robust stainless steel wetted parts, it is ideal for HVAC pump monitoring, filter clogging detection, and industrial pressure management.
The Nagano Keiki GC55 digital differential pressure gauge is designed for accurate pressure and differential pressure measurement in gases and liquids. It employs semiconductor vapor deposition (GC55-160) or stainless steel sealed diaphragm (GC55-168) sensors to detect differential pressures across ranges from 0-100 kPa to 0-2 MPa. The gauge provides real-time digital display, configurable alarm outputs, and optional analog output (1-5V DC or 4-20mA DC) for integration into control systems.
Key to its versatility is the elimination of three-way valve requirements, simplifying installation in differential pressure applications. The GC55 supports high-precision data acquisition for high-pressure, low-pressure, and differential pressure readings, with built-in functions such as zero adjustment, max/min value memory, and digital filtering for noise reduction.
The GC55 is widely used in HVAC systems for chilled and hot water pump differential pressure monitoring, ensuring efficient energy use and compliance with conservation laws. In industrial filtration, it detects clogging in air dryers, cutting machine oil filters, and chemical solution filters, preventing downtime and maintaining process integrity. The gauge also supports sealed tank level measurement for large tanks (10m or more), providing accurate readings without direct contact with the medium. Its robust construction and high allowable maximum pressure (up to 4 MPa for GC55-168) make it suitable for demanding environments.
The GC55 series includes models GC55-160 and GC55-168, offering flexibility in sensor technology and pressure ranges to match specific application requirements. Both models share core features such as digital display, alarm functions, and optional analog output, ensuring consistent performance across the product line.
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.
Source & Supply of Product
VISION IIIA Detector Complete VISION IIIR SPDH-V3A002-Specs Vision AOMD Detector Complete VISION R SPDH-V3AR02-Specs Vision Atmospheric Oil Mist Detector AOMD Suction Fan SF-02001-Specs Vision Atmospheric Oil Mist Detector AOMD Sensor unit SA-01001-Specs Vision Atmospheric Oil Mist Detector AOMD Sensor Unit O-ring RS-01003-Specs Vision Atmospheric Oil Mist Detector AOMD Back Cover NA-05003-Specs Vision Atmospheric Oil Mist Detector AOMD Bolt Front Cover MA-04063-Specs Vision AOMD Smoke Can SC-08102-Specs Vision Atmospheric Oil Mist Detector AOMD Detector PCB VISION R SP-05001-Specs Vision Atmospheric Oil Mist Detector AOMD Detector PCB VISION R SP-05002-Specs Vision AOMD Detector PCB 4-20mA SP-05003-Specs Vision Atmospheric Oil Mist Detector AOMD Bolt PCB MA-04061-Specs Vision Atmospheric Oil Mist Detector AOMD Cable Gland MC-02003-Specs Vision Atmospheric Oil Mist Detector AOMD Front Cover O-Ring RS-01001-Specs Vision AOMD Back Cover O-Ring RS-01002-Specs Vision Atmospheric Oil Mist Detector AOMDVISION IIIC Detector Complete SPDH-V3C001-Specs Vision COMD Oil Mist Detector Detector Complete SPDH-V3C001-RO Specs Vision COMD Oil Mist Detector Detector Complete SPDH-V3CF01-Specs Vision COMD Oil Mist Detector Detector Complete SPDH-V3CF02-Specs Vision COMD Oil Mist Detector Detector Complete SPDH-V3CG01-Specs Vision COMD Oil Mist Detector Sensor Chamber O-Ring RS-02002-Specs Vision CrankCase Oil Mist Detector COMD Sensor Chamber Mounting Bolt RS-04061-Specs Vision COMD Suction Fan SF-02002 Specs Vision Oil Mist Detector Sensor Unit SA-02001-Specs Vision Crank Case Oil Mist Detector COMD PCB Detector SP-06003-Specs Vision COMD Oil Mist Detector Front Cover Mounting Bolt MA-04070-Specs Vision COMD Front Cover O-Ring RS-02001-Specs Vision COMD Sensor Chamber Cap O-Ring RS-02003-Specs Vision CrankCase Oil Mist Detector COMD Circular Head Bolt for PCB RS-04061-Specs Vision COMD Specs Vision CrankCase Oil Mist Detector Vision IIIC COMD Specs Vision Atmospheric Oil Mist Detector Vision IIIA-AOMD ST-08100 smoke test kit