100mm 4 inch clamp connection diaphragm seal 100mm 4 inch clamp connection diaphragm seal pressure gauge with electric contact with electric contact

Window:             common glass
Connection:             brass/bottom type
Thread:             G/PT/NPT 1/2,M20*1.5...
Bourdon tube:     phosphorus bronze
Movement:             stainless iron
Dial plate:             aluminum
Pressure range:     as your request
Accuracy:             2.5% 1.6% 1.0%
Max work voltage:     220V D.C/380V A.C
Max work electricity:   1A
Liquid filling: --
Liquid: --