Mid-West Instrument
Tel: (586) 254-6500 · Fax: (586) 254-6509
6500 Dobry Dr., Sterling Heights, Michigan 48314
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Hazardous Locations Model 220
Model 220

Functions and Applications

The Model 220 classified for Division 2 locations provides another alternative to the installer that does not like additional junction boxes which are required for flying lead interfaces. 

The piston style Model 220 configured for the Division 2 classification is CSA Certified to both the Canadian and U.S. Standards and U.L. Listed to the U.S. Standards. It also has a NEMA 4X (Type 4) weatherproof classification.

Mid-West Instrument’s new Hazardous Locations “Delta P” switches are provided with a field wireable terminal strip. Just loosen the “captive” screws & remove the cover to access the terminal strip. The terminal strip eliminates the need to add an additional junction box near the switch.  Multiple hermetically sealed reed switch outputs are available.
Model 220
Model 220

The Mid-West Advantage:
Certifications:
  • CSA certified, UL Listed , Class I, Division 2, Groups A,B,C, & D;
    Class II Division 2, Groups F & G.

Switch Options:

Type
SPST **
SPDT
SPDT
ELEC Spec.
A
A
A
Output Option Code
E ,F or G
H
A
*Power
60 W
60 W
3W
Max. Current
3.0  Amps
1.0 Amps
0.25 Amps

Max. Voltage VAC/VDC
240
240
125

Setting (F.S.)
15% to 90%
25% to 90%
10% to 90%

Hysteresis (Max/Nom)
20%/9% (F.S.)
20%/18% (F.S.)
10%/6% (F.S.)
Repeatability
1% F.S.
1% F.S.
1% F.S.

† Product of the switching voltage and current shall not exceed the power rating
**  Available Normally Open or Normally Closed

  • Set Point Accuracy: 2%*
  • Interface:  1/2” Conduit / Cable Entry with 16 Position Terminal Strip
  • Enclosure:  NEMA 4X Rating
  • Switch Adjust: Internal to the Enclosure
  • Input Power: None.

Body:

  • Working Pressure:  4000 PSIG
  • Differential Over-range:  Same as Working Pressure
  • Range: 0-5 PSID to 0 -100 PSID
  • Process Connections: 1/4” FNPT End Connected (Standard)
  • Wetted Materials:  AL, 316 / 316L SS,

Indicator:

  • Accuracy:  2%* 
  • Dial Size:  4 1/2”, None (Switch Only)
  • Readings:  Uni-directional

Model 220 Div I information

*  ASME B40.100 Grade B