Model 522 Diaphragm Type Differential Pressure Gauge & Switch
Brand: Mid-West InstrumentModel 522 Differential Pressure Gauge and Switch is a compact, weather resistant gauge for challenging DP Applications and installations. 
It is suitable for use in outdoor and "Hose Down" applications. 
The Rolling Diaphragm Sensing Element isolates the high and low side.
Features- DP Ranges from 0-5 PSD to 0-50 psiD
 - Elastomer Diaphragm Sensing Element
 - Up to 1000 psiG working pressure (69 bar)
 - Maximum DP pressure: (high to low) 200 psiD
 - Gauge housings available in Aluminum, 316/316L Stainless Steel and Acetal Plastic
 - Buna-N and Viton Elastomers
 
Specifications
Brand
Accuracy
- ± 5 %
 
Approvals & Certifications
- CE
 - CSA
 - RoHS
 - UL
 
Diaphragm Material
- Buna-N
 - Viton
 
Enclosure, Body Material
- 316 Stainless Steel
 - 316L Stainless Steel
 - Acetal Plastic
 - Aluminum
 
Environmental Protection
- IP65
 - IP66
 - NEMA 4X
 
NPT Connection
- 1/4" NPT Female
 
Pressure Type
- Differential
 
Seat / Seal Material
- Seal: Buna-N
 - Seal: Viton
 
Set Point - Decreasing
- bar: 0 to 3.5
 - kPa: 0 to 350
 - psi: 0 to 50
 
Set Point - Increasing
- bar: 0 to 3.5
 - kPa: 0 to 350
 - psi: 0 to 50
 
Switch Type
- SPDT 3 W, 125 Vac/dc, 0.25 A
 - SPST 60 W, 240 Vac/dc, 3 A
 
System Pressure
- bar: 69
 - kPa: 690
 - psig: 1,000
 
Temperature Range
- -40° to 93° C (-40° to 200° F)