Model 130 Div I - Differential Pressure Diaphragm Type


The Mid-West Model 130 Diaphragm Type Differential Pressure Gauge is CSA Certified to both the Canadian and U.S. Standards and U.L. Listed to the U.S. Standards. The entire assembly is Certified for use in Class I, Division 1, Groups C, D; Class II, Division 1, Groups E, F, & G Hazardous locations. The entire gauge and the switch is enclosed in a rugged flameproof enclosure. The use of reed switch technology eliminates the need for an additional explosion-proof seal fitting within 18″ of the enclosure.


  • Certifications: CSA Certified, UL Listed, Class I, Division 1, Groups C, D; Class II, Division 1, Groups E, F, & G.
  • Switch Options: SPDT 3W, 125 VAC/VDC, 0.25 amps
  • Set Point Accuracy 2%
  • Interface 1/2” Conduit Entry with Color Coded  24”, 18 Awg. Flying Leads
  • Enclosure: NEMA 7 (Flame-proof), NEMA 4X optional (In addition to NEMA 7)
  • Switch Adjust, External Access to switch adjust internal to enclosure
  • Input Power, None (Switches do not need input power to operate)
  • Body:
    • Working Pressure 500 PSIG (34.5 bar)
    • Differential Over-range 500 PSID (34.5 bar)
    • Range 0-5” H2O to 0 – 400” H2O
    • Process Connections 1/4” MNPT Bottom
    • Materials of construction, AL, 316 / 316L  SS,  Brass, Hastelloy
  • Indicator:
    • Accuracy 2%
    • Dial Size, None (Switch Only), 3 1/2″ or 4 1/2″
    • Readings uni-directional
Model 130 Div I
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