Mid-West Instrument
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 140 / 141 Delta Meter
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Model 140 / 141 Delta Meter
Model 140 / 141 Delta Meter
Literature Links

Product Bulletin Bul140.pdf

Installation/Operation

IM140141.pdf
IM140141elec.pdf

Instrument Installation
Recommendations

Install.pdf

Special Notice About Chemical Seals

chemical_seals.pdf

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 140 / 141 Delta Meter®
Common Applications
  • Filter/Strainer Monitoring
  • Compressed Air, Hydraulic, Refrigerant
  • Pump Performance Testing
  • Heat Exchanger Pressure Drop Monitoring
  • Water Treatment Applications
  • Tank Level Monitoring Horizontal or Vertical
  • Flow Monitoring & Balancing
Product Features
  • DP Ranges from 0-50” WC to 0-100 PSID
  • Elastomer Diaphragm Sensing Element,
    No Cross Port Leakage
  • Up to 3000 PSIG Working Pressure (200 bar)
  • Over-Range Protection,
    High over Low and Low over High
  • Gauge Housings available in Aluminum, Brass, 316/316L Stainless Steel and Acetal Plastic
  • Wide Range of Elastomers
Product Features/Benefits
  • Simple Rugged Designs
  • Glass Reinforced Thermoplastic Gauge Front Is Standard
  • Weather Resistant & Corrosion Resistant Gauge Front
  • 5 Year Warranty

Specifications:

  • Differential Pressure Range 0-50" H2O to 0-100 PSID
    Available in a Variety of Equivalent Ranges and/or Flow Scales (Square Root)
  • Accuracy ±2%* or ±5% of Full Scale
  • Dial Size 2-1/2" Rd. (Standard)
    4-1/2" Rd. (Optional)
  • Working Pressure Alum and S.S. - 3000 P.S.I.G. Brass - 1500 PSIG
  • Material of Construction – Body: Aluminum, Brass, or 316 Stainless Steel
  • Materials of Construction – Internals: 316 Stainless Steel and Elastomer Diaphragm
  • Switch Options (Terminal Strip Interface)
    • 1 or 2 - SPDT 3W, 125 VAC/VDC, 0.25 amps
    • 1 or 2 - SPST (Normally Open) 25W, 240 VAC/VDC, 0.5 amps
  • Electrical Enclosures NEMA 4X and NEMA 7
  • CE Marked in Accordance With Low Voltage Directive
  • Hazardous Locations

Special Features:

  • Over-range Protection Full to Maximum Working Pressure
  • Panel Mounting Standard, Front or Rear Panel
  • Pipe Mounting Kit Optional - 2" U-Bolt
  • Wall Mounting Optional - Rear Mount
  • NACE Compliance Optional
*(ASME B 40.100 Accuracy Grade B)