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 120
121TT_front
Model 120
Literature Links

Product Bulletin Bul121.pdf

Installation/Operation

IM121.pdf

Instrument Installation
Recommendations

install.pdf
 Typical Manifold Installation

The Mid-West Advantage:

  • 1 Year Transmitter Warranty
  • 5 Year Gauge Warranty
  • 30 + Years Hazardous Location product manufacturer.
  • OEM capability
  • Fast on-time Deliveries
  • Friendly Customer Support
  • 3rd Party Certified Quality System
  • CSA Listing
Model 121
Common Applications
  • Filter/Strainer Monitoring
  • Compressed Air
  • Hydraulic
  • Refrigerant
  • Pump Performance Testing
  • Heat Exchanger Pressure Drop Monitoring
Transmitter Specifications
  • 4-20mA Loop Powered Micro Processor based Transmitter
  • Internal Push Button Zero (available for non-hazardous locations only)
  • 4 Position Terminal Strip
  • 8-28 VDC Loop Powered 2-wire interface
  • 1000 Ohm max loop resistance at 28 Vdc.
  • ±2% Accuracy from 20% to 100% of scale, ascending
  • Operating Range -20ºF to 150ºF (-20ºC to 65ºC)
  • Indicator operation is isolated from Loop Power
  • Weather Resistant
  • Assembly is housed in a NEMA 4X (IP65) Enclosure
  • Engineered plastic enclosure with 1/2" NPT access
*(ASME B 40.100 Accuracy Grade B)