Particularly in surface treatment, the precise measurement and control of temperatures is of decisive importance for the subsequent quality of the treated items. To keep the temperature of the liquid in storage tanks within the desired range, also prevents negative effects on the process liquids, such as freezing, crystallisation and excessive viscosity. The following functions need to be implemented: • Control of the temperature in order to automate process steps (such as keeping the desired process temperature) Our temperature sensors are available in the following versions: • with rigid immersion tubes made of various materials • with flexible tube made of PFA All versions can be equipped with one or two Pt100 elements. The function of the temperature sensor results from the integrated Pt100 sensor element. The temperature is determined from the temperature-dependent change in the electrical resistance of the Pt100 element. At 0°C, the element has a resistance of exactly 100 Q. As the temperature increases, the resistance of the element changes in direct proportion to the temperature change. • Monitoring of the temperature in order to avoid possible damage to the process, the process liquid (e.g. damage by excessive temperatures) and the tank (e.g. thermal damage) With the aid of temperature sensors and suitable electronic units, you can control and monitor the temperature of liquids easily and cheaply. A suitable electronic unit generates a low, constant current through the Pt100 element and measures the resulting voltage across the element. The resistance of the element, and thus its temperature, can then be determined with the aid of Ohm's Law (R = U/I). The connection between the electronic unit and the Pt100 element can be made with 2, 3 or 4 wires. We provide 4-wire connections because these permit compensation for the resistance of the connecting wires. Particularly in the case of long wires, the measurement result can be significantly distorted by the wire resistance. Therefore, the connection of temperature sensors to electronics should not exceed 50 m and should be executed generally with 3 or 4 wires. For longer lengths, it is possible to interpose a temperature transmitter with a standard output signal of 4...20 mA. Temperature sensors with a flexible protective tube made of PFA (0 6 mm) with a standard length of 1.6 m (other lengths possible) are extremely resistant to chemicals and the maximum operating temperature is 200°C. They are also suitable for use in cleanroom applications (physiologically benign) and can be mounted to the measuring point in plants and tanks where space is limited. The Pt100 sensor element, with an active measuring length of 50 mm, is mounted to the end of the protective tube. Ral GALVATEK S.A.S - 9, rue de la Tour du Mesnil-Renard - 78270 Bonnieres, France www.galvatek.com - Tel. 01 30 93 07 57 - [email protected]

Nominal length active measuring length = 50 active measuring length = 50 Nominal length of immersion tube – 20 Temperature sensor in PG version with bracket SH 10 Temperature sensor with terminal casing BC Connection cable Pt100 желтый yellow зеленый green белый white коричневый brown sensor element:элемент: Pt100 чувствительный DINDIN EN EN 60751 Pt100 60751 Specifications of the standard materials Immersion tube material SMG 00 Version The terminal casing MG 00 (degree of protection: IP 64) at the end of the protective tube permits easy connection of a cable. Temperature sensors with rigid...