Switches
Sensors for air and non-combustible compatible gases have an electrical contact output at a specific difference between two pressures. Applications vary between the different types of differential pressure switches. A wide variety of switches and circuit styles enables control functions needed for any system.
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Series AT-ADPS ATEX/IECEx Approved Differential Pressure SwitchATEX/IECEx Approved Differential Pressure Switch designed for pressure ... -
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Series H3 Explosion-Proof Differential Pressure SwitchesExplosion-Proof Differential Pressure Switches ... -
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Series AT-DHC ATEX/IECEx Approved Digihelic® Differential Pressure ControllerThe Series AT-DHC ATEX/IECEx Approved Digihelic® Differential Pressur ... -
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Series 1800 Low Differential Pressure Switch for General Industrial ServiceCompact Low Differential Pressure Switches ...Starting at $109.20 -
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Series 1900 Compact Low Differential Pressure SwitchesCompact Low Differential Pressure Switches ...Starting at $76.95 -
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Series 1950 Explosion-proof Differential Pressure SwitchExplosion-proof Differential Pressure Switch applies to HVAC, proces ... -
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Series 1950G Explosion-Proof Differential Pressure SwitchExplosion-proof Differential Pressure Switch combines the best featu ...Starting at $530.40 -
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Series 1620 Single and Dual Pressure SwitchSingle and Dual Pressure Switch which applies to damper positioning ...Starting at $468.00 -
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Series 1630 Large Diaphragm Pressure SwitchesLarge Diaphragm Differential Pressure Switches are used with air or ...Starting at $517.90 -
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Series 1640 Floating Contact Null Switch for High and Low ActuationFloating Contact Null Switch for High and Low Actuation which applie ...Starting at $780.00 -
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Series DP Double Bellows Differential Pressure SwitchDouble Bellows Differential Pressure Switch applies to accurate swit ...Starting at $1,830.40 -
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Series PG Gas Pressure/Differential Pressure SwitchGas Pressure/Differential Pressure Switch is used with air and other ...Starting at $906.90 -
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Series 1996 Gas Pressure SwitchGas Pressure Switch used with natural, manufactured, or LP gas. Appl ...Starting at $168.50 -
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Series MDS Miniature Pressure SwitchMiniature Pressure Switch applies to air proving, ventilation flow, ...Starting at $38.05 -
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Series MDA Miniature Adjustable Pressure SwitchMiniature Adjustable Pressure Switch applies to industrial, HVAC, me ...Starting at $33.35 -
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Series A4 Differential Pressure SwitchDifferential Pressure Switch which is capable of carrying moderate s ...Starting at $101.52 -
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Series ADPS/EDPS Differential Pressure SwitchHVAC Differential Pressure Switch which applies to controlling air and ...Starting at $26.85 -
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Series 1831 DPDT Low Differential Pressure SwitchesDPDT Low Differential Pressure Switches which applies to HVAC and hi ...Starting at $188.25 -
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Series BDPA Adjustable Differential Pressure AlarmStarting at $129.00 -
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Series DX Wet/Wet Differential Pressure SwitchWet/Wet Differential Pressure Switch for use with most gases and wat ...Starting at $134.15 -
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Series EWDP Wireless Communications Adjustable Differential Pressure SwitchWireless Communications Adjustable Differential Pressure Switch used ...Starting at $70.51 -
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Series AT-1800 ATEX/IECEx Approved Low Differential Pressure SwitchSeries AT-1800 ATEX/IECEx Approved Low Differential Pressure Switch ...
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Questions
- Question
- How can a standard 1910 pressure switch be used to sense pressure in an oven operating at 200 degrees Celsius?
- Answer
- Use metal tubing for sensing lines long enough to safely dissipate the heat.
- Question
- For which pressure switch applications are gold contacts recommended?
- Answer
- For "dry circuit" applications where little or no current is flowing in the circuit to help burn off contact dirt and oxidation. Switches used with solid state circuits often fall in this category.
- Question
- Will a Dwyer pressure switch be damaged if the pressure exceeding the maximum set-point is applied to the switch?
- Answer
- No. Not unless the maximum pressure rating of the switch is exceeded.
- Question
- Does Dwyer offer a fully UL/FM/CSA approved explosion proof pressure switch?
- Answer
- Yes. The 1950 and 1950G Series.
- Question
- EDPS series, can the 'delta-P' screw be used to increase or decrease deadband?
- Answer
- The ∆P screw should never be adjusted. It is used to calibrate the instrument to make sure it will switch within the specified range.
