Dwyer Instruments 1910-20 Pressure Switch,
Designed for precision and field reliability, the Dwyer Instruments 1910-20 is a essential differential pressure switch for monitoring air and non-combustible gases in HVAC systems. This Series 1900 pressure switch features a wide set point range of 4.0" w.c. to 20.0" w.c., making it ideal for high-demand applications such as clogged filter detection, fan proving, and frost prevention on refrigeration coils. The unit utilizes a single-pole double-throw (SPDT) switch configuration with internal screw terminals, allowing for easy integration into control circuits for alarm or fan start/stop functions. Engineered with a large silicone diaphragm and a force-motion amplifier, it delivers excellent repeatability within a compact NEMA 1 enclosure. The Dwyer 1910-20 is rated for a continuous pressure limit of 45" w.c. and a surge limit of 10 psig, ensuring durability against system spikes. Its internal set point adjustment screw is protected within the conduit enclosure to prevent unauthorized tampering while remaining accessible for technician calibration during routine maintenance.
Key Benefits- Versatile Range: Spans 4.0 to 20.0 inches water column, covering a broad variety of industrial and commercial air-handling set points.
- Precise Deadband: Maintains an approximate deadband of 0.40" w.c. at the minimum set point and 0.50" w.c. at the maximum for reliable snap-action switching.
- Rugged Construction: Features a zinc-plated steel housing and high-quality silicone wetted parts to withstand environments from -30°F to 180°F.
- Easy Installation: The compact design and 1/8" female NPT process connections allow for mounting in tight mechanical spaces where larger switches fail to fit.
- Industry Certified: UL, CSA, and CE listed, plus FM approved, meeting standard compliance requirements for building automation and safety systems.
Can I mount the Dwyer 1910-20 in any orientation?
Standard calibration for this unit is performed with the diaphragm in a vertical position. Mounting the switch horizontally may shift the set point due to the weight of the internal components, so vertical installation is recommended for maximum accuracy.
What is the maximum electrical load for the SPDT contacts?
The switch is rated for 15 A at 120-480 VAC (60 Hz). However, for high-cycle applications, it is standard practice among technicians to derate the contact load to 10 A to ensure longevity of the internal switch mechanism.
Is this switch suitable for outdoor use?
No, the standard 1910-20 is housed in a NEMA 1 enclosure intended for indoor or protected environments. For outdoor or wash-down applications, a weather-tight or explosion-proof enclosure would be required.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $93.67
-65%$93.67
$32.78Dwyer Instruments 1910-20 Pressure Switch,
Designed for precision and field reliability, the Dwyer Instruments 1910-20 is a essential differential pressure switch for monitoring air and non-combustible gases in HVAC systems. This Series 1900 pressure switch features a wide set point range of 4.0" w.c. to 20.0" w.c., making it ideal for high-demand applications such as clogged filter detection, fan proving, and frost prevention on refrigeration coils. The unit utilizes a single-pole double-throw (SPDT) switch configuration with internal screw terminals, allowing for easy integration into control circuits for alarm or fan start/stop functions. Engineered with a large silicone diaphragm and a force-motion amplifier, it delivers excellent repeatability within a compact NEMA 1 enclosure. The Dwyer 1910-20 is rated for a continuous pressure limit of 45" w.c. and a surge limit of 10 psig, ensuring durability against system spikes. Its internal set point adjustment screw is protected within the conduit enclosure to prevent unauthorized tampering while remaining accessible for technician calibration during routine maintenance.
Key Benefits- Versatile Range: Spans 4.0 to 20.0 inches water column, covering a broad variety of industrial and commercial air-handling set points.
- Precise Deadband: Maintains an approximate deadband of 0.40" w.c. at the minimum set point and 0.50" w.c. at the maximum for reliable snap-action switching.
- Rugged Construction: Features a zinc-plated steel housing and high-quality silicone wetted parts to withstand environments from -30°F to 180°F.
- Easy Installation: The compact design and 1/8" female NPT process connections allow for mounting in tight mechanical spaces where larger switches fail to fit.
- Industry Certified: UL, CSA, and CE listed, plus FM approved, meeting standard compliance requirements for building automation and safety systems.
Can I mount the Dwyer 1910-20 in any orientation?
Standard calibration for this unit is performed with the diaphragm in a vertical position. Mounting the switch horizontally may shift the set point due to the weight of the internal components, so vertical installation is recommended for maximum accuracy.
What is the maximum electrical load for the SPDT contacts?
The switch is rated for 15 A at 120-480 VAC (60 Hz). However, for high-cycle applications, it is standard practice among technicians to derate the contact load to 10 A to ensure longevity of the internal switch mechanism.
Is this switch suitable for outdoor use?
No, the standard 1910-20 is housed in a NEMA 1 enclosure intended for indoor or protected environments. For outdoor or wash-down applications, a weather-tight or explosion-proof enclosure would be required.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
Designed for precision and field reliability, the Dwyer Instruments 1910-20 is a essential differential pressure switch for monitoring air and non-combustible gases in HVAC systems. This Series 1900 pressure switch features a wide set point range of 4.0" w.c. to 20.0" w.c., making it ideal for high-demand applications such as clogged filter detection, fan proving, and frost prevention on refrigeration coils. The unit utilizes a single-pole double-throw (SPDT) switch configuration with internal screw terminals, allowing for easy integration into control circuits for alarm or fan start/stop functions. Engineered with a large silicone diaphragm and a force-motion amplifier, it delivers excellent repeatability within a compact NEMA 1 enclosure. The Dwyer 1910-20 is rated for a continuous pressure limit of 45" w.c. and a surge limit of 10 psig, ensuring durability against system spikes. Its internal set point adjustment screw is protected within the conduit enclosure to prevent unauthorized tampering while remaining accessible for technician calibration during routine maintenance.
Key Benefits- Versatile Range: Spans 4.0 to 20.0 inches water column, covering a broad variety of industrial and commercial air-handling set points.
- Precise Deadband: Maintains an approximate deadband of 0.40" w.c. at the minimum set point and 0.50" w.c. at the maximum for reliable snap-action switching.
- Rugged Construction: Features a zinc-plated steel housing and high-quality silicone wetted parts to withstand environments from -30°F to 180°F.
- Easy Installation: The compact design and 1/8" female NPT process connections allow for mounting in tight mechanical spaces where larger switches fail to fit.
- Industry Certified: UL, CSA, and CE listed, plus FM approved, meeting standard compliance requirements for building automation and safety systems.
Can I mount the Dwyer 1910-20 in any orientation?
Standard calibration for this unit is performed with the diaphragm in a vertical position. Mounting the switch horizontally may shift the set point due to the weight of the internal components, so vertical installation is recommended for maximum accuracy.
What is the maximum electrical load for the SPDT contacts?
The switch is rated for 15 A at 120-480 VAC (60 Hz). However, for high-cycle applications, it is standard practice among technicians to derate the contact load to 10 A to ensure longevity of the internal switch mechanism.
Is this switch suitable for outdoor use?
No, the standard 1910-20 is housed in a NEMA 1 enclosure intended for indoor or protected environments. For outdoor or wash-down applications, a weather-tight or explosion-proof enclosure would be required.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
