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>>Manometers  >>Transmitters  >>Pressure Switches  >>Differential Pressure Switches


Differential Pressure Gauges & Switch/Gauges

Series 2000

Magnehelic® Differential Pressure Gauges -
Indicate low air or gas pressure - positive, negative or differential. Accurate within 2%. 81 Ranges.

Series 4000

Capsuhelic® Differential Pressure Gauges
For air of compatible gases or liquids. Measures pressure, vacuum or differential. Accuracy 3% of full scale. Suitable for internal pressures to 500 psig.

Series 2-5000

Minihelic II® Differential Pressure Gauges
Combining high accuracy, readability, compactness, dependability, and low cost.

Series 43000

Capsu-Photohelic® Pressure Switch/Gages
Lo-Limit and Hi-Limit Control, Aluminum or Brass Case Available

Series 3000MR/3000MRS

Photohelic® Switch/Gauges
Combines differential pressure gauge with low/high set-points. Compact and lightweight. Versatile SPDT electro-mechanical relays, 3000MR Reliable solid state switching, 3000MRS.

Series MP

Mini-Photohelic® Differential Pressure Switch/Gage
Compact, Low Cost Switch Gage

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Model 27/ Model 40

Mark II Molded Plastic Manometers
3% Accuracy for Stationary and Portable Applications at Minimum Cost

Series 475-FM

Mark III Handheld Digital Manometer
Ranges from 4 in. w.c. to 150 psid, ±0.5% Accuracy Intrinsically Safe for Hazardous Locations, Class 1, Div. 1, Group A, B, C, D, T4


Series 1221/1222/1223

Flex-Tube® U-Tube Manometers


Series 1211

Slack-Tube® Manometers

Series 424

Durablock® Inclined-Vertical Manometers
Accuracy To ±1⁄4 Of 1%

Series 490

Wet/Wet Handheld Digital Manometer
Liquid & Gas Pressure Measurement, ±0.5% F.S. Accuracy

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Differential Pressure Transmitters
Series MS
Magnesense® Differential Pressure Transmitter

Monitors Pressure & Air Velocity

Series 605

Magnehelic® Differential Pressure Indicating Transmitter
Dial Gauge Indication, Two-Wire 4-20 mA Outputs.

Series 607

Differential Pressure Transmitter -
Ranges from 0.10" w.c. Accuracy ±0.5%
F.S. ±0.25% Accuracy, Ranges from 0.10" w.c.

Series 616C

Differential Pressure Transmitter
Ranges from 0-1 in. w.c. to 0-100 psid, Accuracy ±0.25% or ±1% F.S.

Series 645

Wet/Wet Differential Pressure Transmitter
±0.25% Accuracy, Quick Response, 2-Wire Design

Series 604A

Differential Pressure Transmitter
±2% Full Span Accuracy, Pressure Rated to 30 psig

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Pressure Switches
Bourdon Tube Pressure Switches - Series DA/DS
Visible setpoint, adjustable deadband, pressure ranges to 5000 PSI.

Series H2

Dual-Action Explosion-Proof Pressure Switches
Explosion-proof and Weatherproof Housing

Series A1PS/A1VS

Economical Pressure Switch
Vacuum and Compound Ranges Available, Adjustable Set Point


Series 1000

Weatherproof Diaphragm Operated Pressure Switches
Visible Setpoint, Fixed Deadband, Pressure Ranges to 1400 psi

Series APS/AVS

Adjustable Pressure Switch
Vacuum and Pressure Ranges, 5A Switch, Compact Size

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Differential Pressure Switches

Series 1900

Compact Low Differential Pressure Switches
Our smallest, lowest cost precision switches. Six standard ranges. Set points from 0.07" to 85" W.C. Repetitive accuracy within 3%.

Series 1950

Explosion-Proof Differential Pressure Switch
Compact, low cost, explosion-proof and weatherproof.

Series 1950G

Integral Explosion-Proof Pressure Switch
Compact, low cost, explosion-proof.

Series 1800

Low Differential Pressure Switches for General Industrial Service
Compact economically priced switches in 8 standard ranges. Set points from 0.07" to 85" W.C. Repetitive accuracy within 2%. Cenelec approved.


Series H3

Explosion-Proof Differential Pressure Switches
Compact, low cost, and weatherproof. Setpoints from 10" w.c. to 200 PSID - rated 1500 PSI.

Series 1630

Large Diaphragm Pressure Switches

Visual Set Point Adjustment in 5 Standard Ranges, 0.05˝ to 12˝ w.c.
Repetitive Accuracy within +1%

Series MDA

Miniature Adjustable Pressure Switch
Adjustable Set Points from 0.1 to 100 in. of H2O

Series MDS

Miniature Pressure Switch
Shock and Vibration Resistant, Lightweight and Compact, Gold Contacts









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