Model 124

Piston Type Gauges

Model 124 – Used on systems with working pressure up to 10,000 PSI. All Switch options on the model 124 are of the terminal strip type which aid in the ease of electrical installation. With a Full scale accuracy of ±3/2/3% combined with differential pressure dial scales from 0-5 PSID to 0-400 PSID, the  Model 124 offers a versatile, accurate differential pressure gauge for your high working pressure most demanding DP requirements.

Contact Us Today For Availability

Product Features/Benefits

  • Rugged Piston Type Design Sensing Element
  • Glass Reinforced Thermoplastic Dial case (Panel Mountable)(Anodized Aluminum Dial Case Option available contact sales for more information)
  • Weather Resistant & Corrosion Resistant
  • Shatter Resistant Lens
  • Over-Range Protection, High over Low and Low over High
  • Terminal Strip Switch & Transmitter options
  • 5 Year Warranty
  • For complete model details See Bulletin_124.pdf
  • Installation and Operation Manual See Bulletin: IOM_124.pdf

Specifications / Configuration

  • Dial Sizes available: 2-1/2”, 3-1/2”, 4-1/2” and 6” Diameters
  • Differential Full Scale Ascending Accuracy ±3/2/3% (ASME B40.1 Grade B)
  • Dial Scale Ranges: 0-5 PSID to 0-400 PSID (0-0.35 to 0-27 bar)
  • Available in a Variety of Dial Scales: Bar, Mbar, kPa, Kg/Cm2, Dual Scale etc.
  • Working Pressures up to 10,000 PSIG (689 Bar)
  • Proof Pressure: 20,000 PSI
  • Operating Temp -40°F to +200°F (-40°C to +93°C)
  • Weather Protection NEMA 4X/IP65
  • ¼-20 Mounting Holes in back of gauge body (Std. on switch and transmitter units)
  • Material of Construction of Body - 316/316L Stainless Steel (Wetted Part)
  • Internal wetted parts-316 Stainless Steel, Ceramic Magnet
  • Multiple instrument process connection size and locations available (Dependent on Dial scale)
    Non-electrical: Hi Port on Right Std
    Electrical: High Port on Left Std
  • O-ring Materials: Buna-N, Viton, and Ethylene Propylene
  • For complete specifications see: Specificationsheet_124.pdf

Common Applications

  • Sub Sea / Deep Well
  • High System Pressure Filter/Strainer Monitoring
  • Compressed Air
  • Hydraulic
  • Refrigerant
  • Pump Performance Testing
  • Heat Exchanger pressure drop Monitoring

Switch Electrical Specifications:

See Bulletin ELECIOM_124

Mid-West Instrument switches are mechanically adjustable allowing customer to set the switch within a defined adjustment span of  range of the instrument. All configurations have a ½” FNPT conduit interface. Mid-West can also pre-set switch set point(s) upon customer request. All Switches are CE marked per EU Low Voltage and RoHS Directive.

Mid-West Instrument 124 indicating / non-indicating differential pressure transmitter is a 2 wire loop powered microprocessor based 4-20 mA transmitter. The magnetic angle sensor & electronics senses the angle (relative to the transmitter sensor) of the magnet which moves linearly in the bore. Each transmitter is individually calibrated to the gauge using an 11 point calibration linearization technique.

  • No Power required to operate switches
  • 1-2 Independent adjustable Switches
  • 4-20 ma Transmitter Output. (Contact factory for CE marking of transmitter to EMC Directive)
  • Available switch output options
    • SPDT 3W, 0.25 Amp, 125 VAC/VDC
    • SPST 60W, 3.0 Amp, 240 VAC/VDC (Normally Open)
    • SPST 60W, 3.0 Amp, 240 VAC/VDC (Normally Closed)
    • SPST 60W, 3.0 Amp, 240 VAC/VDC  (1 Normally Open, 1 Normally Closed)
  • Field Wireable Terminal Strip for switches and transmitter
  • Electrical Enclosures Weather-Resistant, NEMA 4X / IP65
  • Switch Options CE marked to Low Voltage and RoHS Directives

Additional Options:

  • Pipe Mounting Kit - 2" U-Bolt
  • Wall Mounting - Rear Mount
  • Liquid Fill
  • Oxygen Cleaning
  • Maximum Follower Pointer
  • NACE Compliance

The Mid-West Advantage

“Piston Type” Gauges with Electrical Optional

Model No. Differential Pressure Range Accuracy Working Pressure Electrical Available Specifications Installation/ Operation Manual Electrical IOM Drawing
Model 120 0-5 PSID to 0-110 PSID ±3/2/3% Up to 6,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Flying Leads / DIN Connector, Class 1-Div. 1, Class 1-Div. 2
Model 122 0-5 PSID to 0-110 PSID ±5% 3,000 PSI CE / LVD, RoHS Compliant
Model 123 0-150 PSID to 0-400 PSID ±3/2/3% Up to 5,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Flying Leads / DIN Connector, Class 1-Div. 2
Model 124 0-5 PSID to 0-110 PSID
and
0-150 PSID to 0-400 PSID
±3/2/3% 10,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, 4-20mA Transmitter

Electrical “Piston Type” Gauges

Model No. Differential Pressure Range Accuracy Working Pressure Electrical Available Specifications Installation/ Operation Manual Electrical IOM Drawing
Model 121 0-5 PSID to 0-100 PSID ±3/2/3% Up to 6,000 PSI CE / LVD, RoHS Compliant, NEMA 4X,Terminal Strip, Class 1-Div. 2, 4-20mA Transmitter N/A
Model 220 0-5 PSID to 0-100 PSID ±3/2/3% Up to 4,000 PSI CE / ATEX / RoHS Compliant, KOSHA CERTIFIED, NEMA 4X, Terminal Strip, Class 1-Div. 1, Class 1-Div. 2, 4-20mA Transmitter N/A