Mid-West Instrument – Piston Type Differential Pressure Gauges (DP Gauges)

Piston gauges exhibit a slight amount of bypass as the fluid crosses from the high to the low pressure port. As gas molecules are smaller, the crossover is often deemed too great for the application.

• DP Ranges from 0-5 PSID to 0-110 PSID
• kPa dial Rages in Stock at CMC Technologies 0-25,40,60,100,160,250,400,600 and 700kPa
• Piston Sensing Element
• Working Pressures up to 6000 PSIG (400 bar)
• Over-Range Protection, High over Low and Low over High
• Gauge Housings available in Aluminum, Brass, 316/316L Stainless Steel, Aluminum Bronze and Monel
• Wide Range of Elastomers
• Over-range Protection Full to Maximum Working Pressure
• Panel Mounting Standard
• Pipe Mounting Kit Optional – 2″ U-Bolt
• Wall Mounting Optional – Rear Mount
• NACE Compliance Optional
• Seismic Compliance Contact Factory

A rotary pointer magnet located close to the internal magnet, but outside the pressure housing, follows the movement of the piston magnet and indicates differential pressure on the dial. Piston type DP gauges exhibit a slight amount of bypass as the fluid crosses from the high to the low pressure port. Due to precision sizing of piston and body bore, leakage across the piston will not exceed 15 SCFH air at 100 PSID at ambient conditions.

• DP Ranges from 0-5 PSID to 0-110 PSID
• Piston Sensing Element
• 3000 PSIG Working Pressure (200 bar)
• Over-Range Protection, High over Low and Low over High
• Gauge Housings Aluminum with 316 Stainless Steel Internals
• 2-1/2”, 3-1/2”, or 4-1/2” Round Dial
• Wide Range of Elastomers
• Over-range Protection Full to Maximum Working Pressure
• Panel Mounting Standard
• Pipe Mounting Kit Optional – 2″ U-Bolt
• Wall Mounting Optional – Rear Mount

The switches can be set to activate or deactivate on rising or falling pressure. Switches are “CE” marked per the EU low voltage directive. Models 120, 121, & 123 can be configured for use in hazardous locations. All hazardous location switches are both CSA and UL listed. The CSA & UL listings are for the entire assembly and not just the enclosure.

• DP Ranges from 0-5 PSID to 0-400 PSID
• Piston Sensing Element
• Working Pressure up to 10,000 PSIG (689 bar)
• Proof Pressure 20,000 PSIG
• Over-Range Protection, High over Low and Low over High
• Gauge Housing 316L Stainless Steel
• Wide Range of Elastomers
• Over-range Protection Full to Maximum Working Pressure
• Panel Mounting Standard
• Pipe Mounting Kit Optional – 2″ U-Bolt
• Wall Mounting Optional – Rear Mount
• NACE Compliance Optional