Pressure sensor offers wide measurement range and elevated temperature use

14 November, 2018

Aimed at demanding motorsports powertrain or industrial pressure measurement tasks, the new sensor is optionally available for gauge or vacuum use with a choice of ratiometric or unregulated supply for 0.5...4.5 VDC output.

The EPT12R is offered in 14 range options from 0…6 to 0…1500 bar with measuring volume as low as 1 mm3. With its pressure port isolated from the electronics unit via a one metre cable assembly, the sensor features a solid-state pressure cell with no internal O- rings or silicone oil for maximum stability.

Titanium wetted parts mean maximum corrosion resistance to the widest range of media. With both the sensor and electronics units sealed in durable 304 stainless steel housings with IP65 protection ratings, this arrangement allows pressure measurement tasks where ambient temperatures at the sensor head can be in the range of -45 to 185degC. The EPT12R´s accuracy specifications vary with temperature - from 0.5% at 20degC up to 4% maximum at the elevated high and low measured temperature extremes. Stability is specified at 0.5%/year.

The sensor´s compact size and pressure port options of M8 male or 10-32 UNF-2A are complemented with an M5 x 0.5 electrical connector for convenient mounting. The highly durable shock and vibration ratings will suit the most arduous installed environments. Excitation voltage is 5 VDC for ratiometric output and 12…32 VDC for the 0.5…4.5 VDC option. Protection measures include up to 2x overrange and up to 3x burst pressure in addition to short circuit and reverse voltage safeguards. A datasheet for Variohm´s EPT12R pressure sensor is available as a download from the company’s website that covers detailed specification and ordering code information.

www.variohm.com