Dwyer 1823-2 Low Differential Pressure Switch, 0.5″ to 2.0″ w.c.

Dwyer 1823-2 Low Differential Pressure Switch Overview

The Dwyer 1823-2 is a low differential pressure switch engineered for reliable monitoring of air and non-combustible gas pressure in HVAC and building automation applications. With a field-adjustable setpoint range of 0.5″ w.c. to 2.0″ w.c. and an approximate deadband of 0.10–0.12″ w.c., this switch provides precise, repeatable switching performance to help protect equipment and maintain system efficiency.

Key Features

• Setpoint range: 0.5″ w.c. to 2.0″ w.c. (field adjustable)
• Approximate deadband: 0.10–0.12″ w.c.
• Maximum pressure limit: 10 PSIG
• Process connection: 1/8″ Female NPT
• Compatible media: Air and non-combustible gases
• Compact, durable housing suitable for panel or duct mounting
• Simple field adjustment for flexible setpoint configuration

Specifications

• Model: 1823-2
• Setpoint Range: 0.5″ w.c. to 2.0″ w.c.
• Deadband: Approximately 0.10–0.12″ w.c.
• Pressure Limit: 10 PSIG
• Port Connection: 1/8″ Female NPT
• Media: Air and non-combustible gases

Typical Applications

• Air handling unit (AHU) filter status monitoring
• Fan proving and airflow verification
• Duct static pressure control
• HVAC building automation and control systems
• Non-combustible gas pressure monitoring

Why Choose the Dwyer 1823-2?

Dwyer Instruments is a trusted name in pressure measurement and control. The 1823-2 offers a cost-effective, dependable solution for low differential pressure switching in commercial and industrial HVAC systems. Its 1/8″ FNPT connection ensures easy integration into existing piping, while the adjustable setpoint range provides installation flexibility across a variety of system configurations.