Dwyer Instruments 1823-2 Pressure Switch
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Dwyer Instruments 1823-2 Pressure Switch

Dwyer Instruments 1823-2 Pressure Switch

For industrial HVACR systems requiring tight tolerances and reliable switching, the Dwyer Instruments 1823-2 Pressure Switch is the standard for low differential pressure monitoring. This 1800 Series model is engineered for general industrial service, featuring a calibrated range of 0.5" w.c. to 2.0" w.c. and a high repeatability of ±2%. Designed for air and non-combustible gases, it utilizes a single-pole double-throw (SPDT) configuration, allowing for flexible wiring as normally open or normally closed via three screw-type terminals. The compact housing includes a 1/2" conduit connection, while the process side features 1/8" female NPT connections for high and low pressure ports. Its discrete internal setpoint adjustment screw, located inside the mounting spud, allows for secure calibration and effortless panel or wall mounting. This switch is rated for 15 A at 120-480 VAC, making it a robust choice for mechanical equipment control and air flow monitoring in critical environments.

Key Benefits for Technicians:
  • Broad Compatibility: Built for air and compatible gases with a high 10 psig continuous pressure limit.
  • Precision Setpoints: Adjustable from 0.5 to 2.0 inches of water column with a narrow deadband of 0.10 to 0.12 for accurate cycling.
  • Flexible Installation: Supports vertical diaphragm mounting with 1/8" NPT ports for easy integration into existing ductwork or process lines.
  • Industrial Durability: Withstands temperatures from -30 to 180°F, ensuring reliable service in unconditioned mechanical rooms.
  • Standardized Safety: UL and CSA listed, and FM approved for use in regulated industrial and commercial projects.
Common Questions & Technical Insights:

What is the maximum electrical load for the 1823-2?
This switch is rated for 15 A resistive at 120 to 480 VAC. However, when operating at high cycle rates, it is recommended to de-rate the load to 10 A to ensure long-term mechanical reliability.

Can this switch be mounted horizontally?
The Dwyer 1823-2 is calibrated for use with the diaphragm in a vertical position. If the installation requires a different orientation, the unit must be recalibrated at the specific angle to maintain the ±2% accuracy rating.

Is this switch suitable for combustible gas applications?
No, this model is designed strictly for air and non-combustible, non-corrosive gases. For hazardous or explosive environments, an ATEX-approved or explosion-proof 1800 Series variant should be specified.

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.

$43.14

Original: $123.27

-65%
Dwyer Instruments 1823-2 Pressure Switch

$123.27

$43.14

Dwyer Instruments 1823-2 Pressure Switch

For industrial HVACR systems requiring tight tolerances and reliable switching, the Dwyer Instruments 1823-2 Pressure Switch is the standard for low differential pressure monitoring. This 1800 Series model is engineered for general industrial service, featuring a calibrated range of 0.5" w.c. to 2.0" w.c. and a high repeatability of ±2%. Designed for air and non-combustible gases, it utilizes a single-pole double-throw (SPDT) configuration, allowing for flexible wiring as normally open or normally closed via three screw-type terminals. The compact housing includes a 1/2" conduit connection, while the process side features 1/8" female NPT connections for high and low pressure ports. Its discrete internal setpoint adjustment screw, located inside the mounting spud, allows for secure calibration and effortless panel or wall mounting. This switch is rated for 15 A at 120-480 VAC, making it a robust choice for mechanical equipment control and air flow monitoring in critical environments.

Key Benefits for Technicians:
  • Broad Compatibility: Built for air and compatible gases with a high 10 psig continuous pressure limit.
  • Precision Setpoints: Adjustable from 0.5 to 2.0 inches of water column with a narrow deadband of 0.10 to 0.12 for accurate cycling.
  • Flexible Installation: Supports vertical diaphragm mounting with 1/8" NPT ports for easy integration into existing ductwork or process lines.
  • Industrial Durability: Withstands temperatures from -30 to 180°F, ensuring reliable service in unconditioned mechanical rooms.
  • Standardized Safety: UL and CSA listed, and FM approved for use in regulated industrial and commercial projects.
Common Questions & Technical Insights:

What is the maximum electrical load for the 1823-2?
This switch is rated for 15 A resistive at 120 to 480 VAC. However, when operating at high cycle rates, it is recommended to de-rate the load to 10 A to ensure long-term mechanical reliability.

Can this switch be mounted horizontally?
The Dwyer 1823-2 is calibrated for use with the diaphragm in a vertical position. If the installation requires a different orientation, the unit must be recalibrated at the specific angle to maintain the ±2% accuracy rating.

Is this switch suitable for combustible gas applications?
No, this model is designed strictly for air and non-combustible, non-corrosive gases. For hazardous or explosive environments, an ATEX-approved or explosion-proof 1800 Series variant should be specified.

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

For industrial HVACR systems requiring tight tolerances and reliable switching, the Dwyer Instruments 1823-2 Pressure Switch is the standard for low differential pressure monitoring. This 1800 Series model is engineered for general industrial service, featuring a calibrated range of 0.5" w.c. to 2.0" w.c. and a high repeatability of ±2%. Designed for air and non-combustible gases, it utilizes a single-pole double-throw (SPDT) configuration, allowing for flexible wiring as normally open or normally closed via three screw-type terminals. The compact housing includes a 1/2" conduit connection, while the process side features 1/8" female NPT connections for high and low pressure ports. Its discrete internal setpoint adjustment screw, located inside the mounting spud, allows for secure calibration and effortless panel or wall mounting. This switch is rated for 15 A at 120-480 VAC, making it a robust choice for mechanical equipment control and air flow monitoring in critical environments.

Key Benefits for Technicians:
  • Broad Compatibility: Built for air and compatible gases with a high 10 psig continuous pressure limit.
  • Precision Setpoints: Adjustable from 0.5 to 2.0 inches of water column with a narrow deadband of 0.10 to 0.12 for accurate cycling.
  • Flexible Installation: Supports vertical diaphragm mounting with 1/8" NPT ports for easy integration into existing ductwork or process lines.
  • Industrial Durability: Withstands temperatures from -30 to 180°F, ensuring reliable service in unconditioned mechanical rooms.
  • Standardized Safety: UL and CSA listed, and FM approved for use in regulated industrial and commercial projects.
Common Questions & Technical Insights:

What is the maximum electrical load for the 1823-2?
This switch is rated for 15 A resistive at 120 to 480 VAC. However, when operating at high cycle rates, it is recommended to de-rate the load to 10 A to ensure long-term mechanical reliability.

Can this switch be mounted horizontally?
The Dwyer 1823-2 is calibrated for use with the diaphragm in a vertical position. If the installation requires a different orientation, the unit must be recalibrated at the specific angle to maintain the ±2% accuracy rating.

Is this switch suitable for combustible gas applications?
No, this model is designed strictly for air and non-combustible, non-corrosive gases. For hazardous or explosive environments, an ATEX-approved or explosion-proof 1800 Series variant should be specified.

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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