O-ring pressure switch PR20

threadedflush diaphragmstainless steel

The  PR20  pressure  switch  is  designed  for  use in  applications  where media tend  to  deposit and clog the sensor.  A  compact  front-flush process connection  prevents  hidden  edges  and  drill  holes,  in  combination  with  a  resistant  ceramic  sensor  optimal  cleaning  and  maintenance  can be ensured. The electrical connection is provided via an integrated clamping strip, while the PG11 cable gland offers IP 67 dust and water protection. Its compact  housing is made of  high-quality  stainless  steel  1.4404  and is therefore suitable for  almost  all  media.  Our  modular  design  concept provides a wide variety of products. Feel free to contact us if you need a customization that is not listed in this datasheet. Features Dry front flush ceramic sensor Simple on-site operation via DIP Switch Dry ceramic sensor Negative pressure measuring range: up to -1 bar Accuracy ≤ 0,5 % Analog output: 4…20 mA, 3-wires Contact output: DC PNP, max. 200 mA Applications: Abrasive media Aggressive media Vacuum applications Technical data: - Negative pressure measuring range: up to -1 bar Analog output - 4…20 mA, 3-wires Contact output - DC PNP, max. 200 mA Power supply - 20 mA output: 19…30 V DC Accuracy - ≤ ± 0,5 % FS @ 25 °C Long term stability - ≤ ± 0,5 % FS / Year Response time - 50 ms - others on request Switch-on time - < 1 s Temperature coefficient - Zero: ≤ ± 0,03 % FS / Kelvin - Span: ≤ ± 0,02 % FS / Kelvin Medium temperature - -25…100 °C Surrounding temperature - -25…85 °C Storage temperature - -40…85 °C Short-circuit resistance - Permanent Reverse polarity protection - Protection against reverse polarity, but no function