Mid-West Instrument
Tel: (586) 254-6500 · Fax: (586) 254-6509
6500 Dobry Dr., Sterling Heights, Michigan 48314
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OEM Diaphragm Type Differential Pressure Indicator / Switch Model 522
Model 522
Model 522
Literature Links

Product Bulletin
Bul522.pdf
The Mid-West Advantage:
  • 5 Year Warranty
  • 30 + Years Hazardous Location product manufacturer.
  • OEM capability
  • Fast on-time Deliveries
  • Friendly Customer Support
  • 3rd Party Certified Quality System
Switch Configuration - Model 522

Common Applications

  • Filter monitor for initiating backwash cycles
  • Hydro applications
  • Pump performance monitoring
  • Replacement indicating switch for competitor switches that do not offer local indication
  • 1 SPST adjustable switch with optional Set Point Feedback
  • Optional CE marked to Low Voltage Directive
  • Double Insulation Safety Protection
  • DIN Plug In Connector or Flat Pack with cable switch packaging
  • OEM marking optional
  • Switch Located on Bottom or Top (Customer must specify)
  • Reverse pressure must be avoided

SWITCH SPECIFICATIONS (522):

Parameter
Value
Comments
Input Power:

Not required
Reverse Polarity:
8-28 VDC
AC units not applicable
Switch:
1 SPST Normally Open
SPDT Available soon
Switch Ratings:
SPST – 60W, 240 VAC / VDC, 3 Amps
Product of switching voltage and current shall not exceed power rating.
Switch Style:

Flat Pack with jacketed Cable (22 Awg)

DIN 43650 3 Pin + Gnd Connector
Adjustment:
40% - 95% of FSR
Set Point Accuracy
5% of FSR
Repeatability:
1% of FSR
Set Point Feedback
Yes (DIN Connector)
Optional (must request)
Temperature:

-40º F to + 200º F