General rules for installation:
Important note: These thermostats are intended to monitor or control temperatures in gas or dust hazardous areas. For gas hazardous areas, this equipment is approved as “Ex db” and is suitable for use in zone 1 and zone 2, gas group IIC (Hydrogen/Acetylene, the highest protection group), with a temperature classification T5;
For dust hazardous areas, this equipment is approved as “Ex tb”, suitable for use in zone 21 and zone 22, the dust group is IIIC (electric conductive dust, the highest protection group), with ambient temperature limits on its body from -60°C to +80°C ( -60°C to +50°C at 25A).
The thermostat body must be installed preferably inside an “Ex e” enclosure.
The thermostat capillary exit must be performed by a cable gland with gasket adapted to the diameter of the capillary and providing the level of protection required by the standard.
Electrical connections at the end of the cable can be made inside an “Ex e” enclosure or outside the hazardous area.
These models with screw adjustment and mounting on rear side 35mm DIN rail allow incorporation inside most existing “Ex e” junction boxes in aluminum or polyester and inside a free height of 68mm above the DIN rail. Approvals: These thermostats are certified: ATEX: TÜV 22 ATEX 8892 X;IECEx: IECEx TUR 22. 0057 X.
Housing: Aluminum, 86 x 40 x 64mm (Dimensions without shaft and knob)
Bulb and capillary: Stainless steel. Capillary length 500 mm or 1500 mm. Capillary minimum bending radius 5mm. Temperature sensing element: Oil filled bulb and capillary.
Electrical connection: Silicone insulated cable H05SS-F, 3x 2.5 mm², T180°C, 450V, standard length 1000mm. Wire ends with crimped terminals. Other lengths on request.
Ground terminals: One M4 grounding terminals with saddle is located on the side.
Adjustment: With screwdriver
Mounting: Backside, on symmetrical 35mm DIN rail
Contacts: SPDT (Snap action contact)
Electrical rating: Suitable for power control, remote control of relay coils or PLCs circuits.
Options:
- Capillary sleeved with 6mm diameter stainless steel flexible tube
- Capillary with fitting for 6mm cable gland gasket, with or without capillary sleeving in stainless steel Mechanical life: > 500.000 cycles