Elastomer Diaphragm Sensor
SWITZER Series 020 pressure switches are specially designed for very low input pressure from mmWC and upto 4 bar for use in varied applications. Switzer’s time proven Series 200 mechanisms are employed to ensure reliable switching.
A precision contoured synthetic elastomer diaphragm senses low pressures applied to it and actuates a snapacting microswitch when the input pressure is above or below the pre-set value.
GENERAL SPECIFICATIONS
GM:Aluminium pressure die cast
weatherproof to IP:66
GA:304SS / 316SS, investment cast,
weatherproof to IP:66
GK:Aluminium die cast weatherproof to IP:66 & flameproof to Gr.IIA, IIB or IIC (Note 1)
Ranges:Refer Table
Sensor:Neoprene Diaphragm Std. Nitrile,EPDM & Silicone are optional.
Nitrile Diaphragm standard for range codes F1D, A5K, G8B & A6K. Options not available.
Wetted Parts:Aluminum standard. 304 / 316 SS optional
Mounting:Vertical only (Note 5)
Repeatability:±2 % FSR (Note 4)
Scale Accuracy:±5 % FSR (Note 6)
Ambient Temp:-10°C to + 60°C (Note 12)
Max. Working Pr:Refer Range Table
Max. Working Temp:95°C for Neoprene 110°C for Nitrile 130°C for EPDM 200°C for Silicone (Note 13)
Switching Element:95°C for Instrument quality snap acting SPDT microswitch
Differential:Fixed, Wideband adj. For values refer Tables
Connection Process:1/4" NPTF Std., Others through Adaptor. 1/2" NPTF direct only for SS wetted parts. Electrical 3/4" ETF std; 1/2" N
Electrical:3/4" ETF std; 1/2" NPTF optional. Dual entry on request
Conformity:Generally to BS:6134 : 1991
Mounting Dimensions
GM ENCLOSURE
GM ENCLOSURE
