Dwyer 1950G Explosion-Proof Differential Pressure Switch for Natural Gas

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Explosion-proof and rain-tight differential pressure switch for air and natural gas. Operating ranges from 0.07" to 20" WC. Form C SPDT relay output. AC or DC power. UL, CSA, FM approvals.

  • For natural gas applications
  • Operating differential pressure ranges from 0.07" to 20" WC
  • Pressure limits: 45" WC continuous; 10 PSIG surge
  • Form C SPDT relay output
  • External setpoint screw simplifies adjustments without opening or disassembling enclosure
  • 1/8" NPTF process, internal terminal block electrical connections
  • 24 VDC, 120 or 240 VAC powered models optional
  • NEMA 3/IP54, NEMA 7 and 9 explosion-proof, rain-tight, weatherproof housing provides protection for outdoor use or harsh environment operation
  • UL listed for use in Class I, Groups A-D; Class II, Groups E-G and Class III atmospheres; CSA and FM approved for Class I, Div. 1, Groups B-D; Class II, Div. 1, Groups E-G and Class III environments; ATEX and IECEx approved models available

Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.

Deadband Click for Price and Availability
Min SetpointMax Setpoint24 VDC Power120 VAC Power
0.07" to 0.15" WC0.040.06 1950G-00-B-24-NA 1950G-00-B-120-NA
0.15" to 0.50" WC0.060.11 1950G-0-B-24-NA 1950G-0-B-120-NA
0.4" to 1.6" WC0.110.29 1950G-1-B-24-NA 1950G-1-B-120-NA
1.4" to 5.5" WC0.40.9 1950G-5-B-24-NA 1950G-5-B-120-NA
3" to 11" WC0.91.8 1950G-10-B-24-NA 1950G-10-B-120-NA
4" to 20" WC1.23.0 1950G-20-B-24-NA 1950G-20-B-120-NA

Call for 230 VAC power or ATEX, IECEx approved models.

More Information
Measured Variable Differential Pressure
Enclosure/Construction IP54, NEMA 7, NEMA 9
Switch Output SPDT
Sensor Type Diaphragm
Adjustment External Adjustment
Measuring Range 0.07" to 20" WC
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