Mid-West Instrument
Made in the USA
Tel: (586) 254-6500 · Fax: (586) 254-6509
6500 Dobry Dr., Sterling Heights, Michigan 48314
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Differential Pressure Diaphragm Type Gauge / Switch - Model 130
Model 130
Literature Links

Product Bulletin Bul130.pdf

Installation/Operation

IM130.pdf
IM130elec.pdf

Instrument Installation
Recommendations

Install.pdf
 Typical Manifold Installation

The Mid-West Advantage:
Model 130

Functions and Applications

The Model 130 diaphragm isolated Differential Pressure Switch 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:

Type
SPDT
Option:
A
*Power
3W
Max. Current
0.25 Amps

Max. Voltage VAC/VDC
125

Setting (%F.S.)
10 to 90

Hysteresis (Max/Nom)
10%/5% (F.S.)
Repeatability
1% F.S.
Leads 18 Awg. (per switch)
(3),  24”
  • 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
  • High Side to Low side Isolation:  Yes (Diaphragm Style)
  • Process Connections: 1/4” MNPT Bottom
  • Materials:  AL, 316 / 316L  SS,  Brass, Hastelloy

Indicator:

  • Accuracy:  2%* 
  • Dial Size:  None (Switch Only), 3 1/2”, or 4 1/2”
  • Readings:  Uni-directional
*(ASME B 40.100 Accuracy Grade B)