Thermistor automation / PTC
The thermistor control THM1-2-EB is used together with one or two PTC sensors.
In stagnant air, the sensor slowly heats up and becomes high-impedance. When the sensor comes into contact with the liquid, the resistance decreases, triggering the output. The sensing element quickly changes resistance when cooling in the liquid, and the principle is based on the fact that oil at +50°C cools better than stagnant air at -25°C.
Universal applications for most liquids. High-level alarm, low-level alarm, or start-stop with built-in self-holding circuit.
| Article number | Info | Connection | |
|---|---|---|---|
| STER-10-3M Recommended | PTC sensor with 100mm probe in acid-resistant steel. The sensor has a completely sealed cable connection, which allows it to be used as an immersion sensor. A wide range of accessories provides several mounting options. 3m PUR cable. Intended for thermistor control THM1-2-EB. | Straight cable |  |
| THM1-2-EB | Thermistor control unit 230V, for PTC sensor. Relay output with changeover, potential-free contact, max 250VAC, 500VA. Universal use for high-level alarm, low-level alarm, or start-stop with built-in self-holding circuit. IP66 Intended for use together with one or two sensors from the STER series. | Plint |  |
| STER-10-3M-C1/2 | PTC sensor with 100mm probe in acid-resistant steel. G1/2" adjustable cutting coupling, SUS-316. 3m PUR cable. Intended for thermistor control THM1-2-EB. | Straight cable |  |
| STER-30-3M-C1/2 | PTC sensor with 300mm probe in acid-resistant steel. G1/2" adjustable cutting coupling, SUS-316. 3m PUR cable. Intended for thermistor control THM1-2-EB. | Straight cable | |
| STER-50-3M-C1/2 | PTC sensor with 500mm probe in acid-resistant steel. G1/2" adjustable compression fitting, SUS-316. 3m PUR cable. Intended for thermistor control THM1-2-EB. | Straight cable | |
| FPA-G1/2* | Plastic flange with internal thread G1/2". Including nitrile gasket and 4 sheet metal screws 3.5x19mm. |  | |
| TW901/905 | Wall outlet with overload protection. |  |