WIKA Pressure Transmitter for Heating and Refrigeration, Model R-1, -0.5…+10 bar Gauge, Stainless Steel, 4–20 mA 2-Wire, Schrader 7/16-20 UNF Process Connection, M12x1 Circular Connector, 57387072
Part Number : 57387072
Brand :
![WIKA]()
Compact stainless-steel WIKA R-1 pressure transmitter for refrigeration and heat pump systems, factory-configured for -0.5…+10 bar gauge with 4–20 mA output, 7/16-20 UNF Schrader process connection and M12x1 circular connector.
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KWD 70.550
Description
The WIKA R-1 is a compact stainless-steel pressure transmitter for refrigeration, air-conditioning and heat pump systems, supplied in this configured version 57387072 with a -0.5…+10 bar gauge measuring range, welded thin-film sensor, 4–20 mA 2-wire output, Schrader 7/16-20 UNF process connection and M12x1 connector, providing reliable long-term monitoring of suction and discharge pressures in HVACR circuits even under vibration, condensation and wide medium temperature ranges.
Key Features
• Welded thin-film stainless-steel measuring cell without elastomer seals for high durability and media compatibility in refrigeration circuits
• Configured measuring range -0.5…+10 bar gauge for typical suction and discharge pressure monitoring in HVACR systems
• 4–20 mA, 2-wire output with 7…30 V DC supply for simple, interference-resistant signal transmission to controllers and PLCs
• Proven long service life with up to 10 million load cycles and low long-term drift for stable measurement over many years
• Designed for harsh ambient conditions, maintaining performance at -25…+85 °C and in high humidity / condensation environments
• Suitable for use with flammable refrigerants thanks to updated electronics and robust construction
• Compact design with M12x1 circular connector and 7/16-20 UNF Schrader connection for fast installation and easy replacement
Applications
• Refrigeration plants and chillers for commercial and industrial cooling
• Heat pumps and heat recovery systems in heating and HVAC installations
• Air-conditioning systems in buildings, rooftops and air-handling units
• Condensing units and compressor packs using standard and flammable refrigerants
• Cooling systems for data centres, cold rooms and process cooling skids
Specifications
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