Product Description

WIKA Model R‑1 is a compact, rugged pressure transmitter specifically engineered for HVAC, refrigeration, and heat  pump systems. Built with a monolithic all‑welded stainless steel design and dry thin‑film measuring cell, it  eliminates elastomer seals, delivering superior long‑term leak tightness and reliability.

The sensor has been tried and tested in the field for years and is extremely reliable. Up to 10 million load cycles  are no problem for the model R-1. The model R-1 has been designed

without elastomer seal, the high-accuracy measuring cell is welded directly to the process connection. All parts that  come into contact with the substances in the refrigerant circuit

are made of robust stainless steel with a high load capacity.

Main Features

• Thin‑film sensor technology (sputtered) – excellent stability and high burst pressure.

• All stainless steel wetted parts – compatible with all common refrigerants.

• Hermetically welded, seal‑free construction – no leakage risk.

• Extreme durability: up to 10 million load cycles.

• Wide temperature range: ‑25 °C … +85 °C (‑13 °F … +185 °F).

• Superior condensation resistance – tested 500 hours under harsh humid conditions.

• Ingress protection: IP67 / IP69K (depends on electrical connection).

• Multiple electrical options: M12×1 connector, Metri‑Pack 150, or cable outlet.

• Custom branding / private labeling available.

Special features

• Durable and maintenance-free.

• Stable measurement in variable conditions.

• Best possible condensation tightness.

• Safe handling of flammable refrigerants.

• Greatest possible delivery reliability with WIKA as an experienced OEM partner.

Applications

• Refrigeration plants.

• Heat pumps.

• Air-conditioning systems.