Oil & gas
ATEX, IECEx and UL intrinsically safe displacement sensors
P
ositek is an ISO9001:2015 designer and manufacturer of precision displacement sensors that feature its own PIPS inductive position sensing technology.
Available in three derived displacement measurement formats for linear, rotary- and tilt-angle position sensing, the comprehensive range covers high-precision linear position measurement up to 1,500 mm and angle measurement between 5° and 160°. Positek sensors offer long life and reliability through characteristically high shock and vibration resistance in a non- contacting and long-life design that scores favourably against, potentiometer, LVDT/RVDT and magneto-strictive sensor technologies. 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 directed the company to develop several variant models that have ATEX/IECEx and CSA certified approvals for hazardous gas/vapour and hazardous dust atmospheres.
Positek’s intrinsically safe sensors
are presented in groups covering ATEX/IECEx and CSA approved sensors for gas/vapour and for dust atmospheres. There is also a separate group for mining environment approved sensors. Almost all of Positek’s standard linear and rotary sensors 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’. Comparable specification differentiation
between standard sensors and their intrinsically safe counterparts apply across a comprehensive range that includes more than fifteen product versions for each of the ATEX/IECEx, CSA and mining environment groups. These sensors include standalone short- and long-stroke linear position sensors
in standard or slim-line housings, large- and small-angle rotary position sensors, tilt sensors and gauge head position sensors. Positek also offers ATEX, and CSA approved
galvanic isolation amplifiers that are recommended for use throughout the intrinsically safe sensor range. These amplifiers provide tri-port isolation between the amplifier power supply, the hazardous area and the sensor’s X005 output signal.
Positek
www.positek.com
Instrumentation Monthly March 2022
31
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