The Ex-Proof Thermal Flow switch is a calorimetric flow switch designed for monitoring thermally conductive liquids. It can also be used in explosive environments with its Ex-Proof feature.
The working status is displayed by 10 LEDs on the product. The outlet state will change when the flow rate falls below the set limit. The limit can be selected to cut off the contact in the range shown. In the measuring cycle, the recommended measuring range is 4 ÷ 150cm / sec, with 4 sec to 8s (default measuring range 4 ÷ 400cm / sec).
Two standard length rod type sensors are offered, depending on the pipe ID on the installation site, and a 65mm or 125mm long rod type sensor can be selected. If the flow rate in the medium used is to be monitored in a pipe less than DN25 (or the flow rate is below the sensor range for a given pipe diameter), it is advantageous to use an adapter block with the corresponding flow rate. Thus, while working properly, it maintains the installation conditions.
| Measuring Principle | Calorimetric |
|---|---|
| Precision | ±2.. ±8 cm/sec |
| Ambient Temperature | -10 ... +80°C |
| Pressure (Pmax) | 63 bar |
| Protection Class | IP67 |
| Power Supply | 24 V ± 10 % |