Mid-West Instrument
Tel: (586) 254-6500 · Fax: (586) 254-6509
6500 Dobry Dr., Sterling Heights, Michigan 48314
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Differential Pressure Piston Type Gauge & Switches - Model 123
Model 124
Model 124
Model 124
Model 124

Literature Links
Product Bulletin bul124_07.pdf

Installation/Operation
im124.pdf
im124elec.pdf

Instrument Installation
Recommendations

Install.pdf
 Typical Manifold Installation
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
Model 124

High Working Pressure: 10,000 PSI
Common Applications
  • Sub Sea / Deep Well
  • High Pressure Filter/Strainer Monitoring
  • Compressed Air
  • Hydraulic
  • Refrigerant
  • Pump Performance Testing
  • Heat Exchanger Pressure Drop Monitoring
Product Features
  • 1 to 2 independently adjustable switches
  • Hermetically Sealed Switches
  • SPDT, SPST Normally Open, & SPST Normally Closed Configurations
  • Most configurations CE marked to the Low Voltage Directive (EN 61010) Power Ratings ranging from 3 Watts to 60 Watts (Great for upgrades to handle cable lengths beyond 70 ft.) (see Table Below)
  • Numerous enclosure configurations. (see Table Below)
  • DIN connector (New popular field wireable interface)
  • 1 Year warranty

Switch Specifications:

Electrical Configuration Matrix (Model 124) (All options CE marked except C, D, T)

OPTION
INTERFACE
MARKINGS
ENVIRONMENTAL
COMMENTS
A,B
Flying Leads, 22 Awg.
CE (Low Voltage)
Weathertight
Economical Configuration
C,D
1/2" FNPT Conduit Connection
Low Voltage

NEMA 4X/IP65 with Terminal Strip
Most Economical NEMA 4X Configuration
L,M
Plug-In Connector DIN 43650
CE (Low Voltage)
NEMA 4X
Connector (IP65)
Connector CSA/UL approved for general purpose wiring. Field Wireable. Very Popular Option.
T
4-20 mA Transmitter
Low Voltage

NEMA 4X/IP65 With Terminal Strip
Economical Configuration

REED SWITCH RATINGS (Resistive Load)

TYPE
SPST
SPDT
Option:

E, F, G
A
*Power
60 W
3W
Max. Current
3.0 Amps
0.25 Amps
Max. Voltage VAC/VDC
240
125
Setting (%F.S.)
25 to 95
10 to 90
Hysteresis (Max/Nom)
15% / 8% (F.S.)
10% / 5% (F.S.)
Repeatability
1% F.S.
1% F.S.
Leads 22 Awg. (per switch)
(2), 24"
(3), 24"

* Product of the switching voltage and current shall not exceed the power rating of the device.
*(ASME B 40.100 Accuracy Grade B)