Pressure transmitter for heating and refrigeration
- 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
- Responsive after-sales service / Customizable /
- High quality / One-year warranty
- The image is for reference; the actual product willbe based on your custom specifications.
Description
Durable and maintenance-free
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.
Stable measurement in variable conditions
Due to its robust design, ambient temperatures of -25 … +85 °C [-13 … +185 °F] represent no problem for the model R-1. Even if the ensor temporarily freezes over, the accuracy is not limited.
Best possible condensation tightness
To simulate its harsh operating conditions, the model R-1 is tested in continuous operation with a cooler medium (-11 °C [12.2 °F]) for 500 h in a climatic chamber at 45 °C [113 °F] and 85 % air humidity. This quality benchmark proves the sensor’s high resistance to ondensation and ensures long-term process reliability under extreme conditions.
Safe handling of flammable refrigerants
Thanks to a technical update to the electronics, the R-1 can now also be used in applications with flammable refrigerants.
Greatest possible delivery reliability
The model R-1 is manufactured on five production lines with a high degree of automation. The highest quality is ensured by extensive quality tests that go beyond the industry standard. For example, a 100 % end-of-line test is standard at WIKA. As a strong partner in the OEM business, WIKA offers private labelling for the model R-1.
Specifications
| Electrical connections | ■ Connection type ■ Cable outlet ■ Pin assignment ■ Ingress protection (IP code) per IEC 60529 ■ Short-circuit resistance ■ Reverse polarity protection ■ Insulation voltage |
|---|---|
| Scale ranges | 0 … 6 kPa to 0 … 160 kPa, or other equivalent units of pressure, vacuum or compound |
| Pressure units | bar, psi |
| Accuracy | ±0.5% F.S., ±2% F.S. |
| Process connection | Stainless steel 1/8, 1/4 PT, G, NPT, UNF |
| Case/Ring | Stainless steel |
| Medium temperature | -40℃ ... 100℃ |
| Response time | ≤5 ms |
| Voltage supply | DC 7 ... 30 V, DC 8 ... 30 V, DC 14 ... 30 V, DC 4.5 ... 5.5 V |
| Output signal | 4 ... 20 mA, DC 1 ... 5 V, DC 0 ... 10 V, DC 0.5 ... 4.5 V |













