tender for vgtps - phase- ii - supply of barksdale or equivalent make surge protection differential pressure switches forgas turbine compressor- 1 material 2 barksdale or equivalent make surge protection dp switches model no: dpd1t-m3ss-exi or equivalent specifications:working range: 0 – 0.7 bar, adjusting range: decreasing : 0 – 0.2 bar (0.03 – 2.76 psi), increasing : 0.02 – 0.2 bar (0.27 – 3 psi)approx. dead band: 0.01 – 0.02 bar(0.09 – 0.24 psi)max. diff. pressure (proof): 0.7 bar (10 psi), accuracy: ± 0.5% of the adjustable range switch, switching type: spdt snap action; contact: silver single or dual circuit, rating: 10 amps @ 125/250 vac; 3 amps @ 480 vac;0.5 amps @ 125 vdc; 0.25 amps @ 250 vdc (class a or h limit switch), wetted parts:- diaphragm: 17-7 ph stainless steel, seals: viton®, enclosure: die-cast aluminum anodized, other parts: nickel plated aluminum 300 series sselectrical connection: screw terminals on covered terminal strip through 1/2” npt conduit fitting, enclosure ratings: nema 4x, pressure connection:1/8” npt female high + lowtemperature range: operating:-65°f to +165°f (-54°c to+74°c) options: factory preset at 30mbar