Displacement sensors include ATEX, IECEx and UL intrinsically safe versions

Several years’ experience in supplying its sensors into oil and gas, mining, marine, hydraulics and numerous other harsh industrial and otherwise challenging environment applications has prompted Positek to develop several variant models that have ATEX/IECEx and CSA certified approvals for hazardous gas/vapour and hazardous dust atmospheres.

Almost all of Positek’s standard linear and rotary sensors now have optional intrinsically safe approved counterparts within these groups. Through each product series, options typically cover a choice of IP rated sealing, and some offer submersible versions with sealing to 350 bar. ATEX/IECEx sensors for gas/vapour have an ‘X’ designation whilst dust has an ‘E’ designation. CSA versions carry ‘G’ and ‘H’ designations respectively, whilst mining uses ‘M’.

These designations are better described using an actual sensor product as an example. One of Positek’s popular linear sensors is its P100-series hydraulic/pneumatic cylinder position sensor. In its standard product offering, this robust and durable 35 mm diameter in-cylinder mounted sensor for hydraulic pressures to 350 bar has a built-to-order measurement range up to 1485mm. It’s fluoropolymer-sheathed probe and stainless-steel target tube construction has a choice of IP65 or IP67 environmental sealing. Providing an effectively infinite resolution and a precision linearity to 0.25% FS, the sensor can perform over a working temperature range of -40°C to +125°C depending on the type of electronic output selected.