Description

Surface Sensing Mechanical Thermostat

This EEx d approved surface sensing thermostat provides temperature control for all Raychem BTV, QTVR, KTV and XTV heating cables in hazardous areas. The switching temperature range is –4°C to +163°C and is adjustable externally to the Ex enclosure by a dial mounted under a bolted-on cover and seal.

The switching current capacity is 22 A, but this thermostat has a continuous cur-rent limit of 32 A allowing it to be used with longer lengths of self-regulating heat-ing cable. It has a single pole change-over switch with volt-free contacts.

Cable entry is through a single 3/4" NPT thread entry. Raychem cable glands are available to suit non-armoured and armoured cable.

The 3 m long stainless steel fluid filled bulb and capillary give freedom to locate the enclosure remote from the bulb. The bulb exposure range is –50°C to +215°C. The cast aluminium construction with stainless steel fittings gives a lightweight unit which can be pipe mounted using Raychem support brackets or surface mounted.