Dwyer 1900‑10‑MR Differential Pressure Switch

Description

The Dwyer 1900-10-MR is a compact low differential pressure switch from Dwyer’s Series 1900, engineered for accurate pressure control and monitoring in HVAC, refrigeration, industrial, and airflow systems. Featuring a manual reset option, this switch is ideal for applications that require dependable pressure-based switching with enhanced safety and control.

Key Features

• Designed to sense differential pressures from 3.0 to 11.75 inches water column (W.C.), making it suitable for low pressure control tasks.
• Manual reset option (MR) ensures the switch must be reset after activation, helping prevent automatic cycling in critical conditions.
• Single-pole double-throw (SPDT) contact provides versatile switch output for control, alarm, or interlock functions.
• Internal set point adjustment screw makes it simple to fine-tune the switching point while minimizing tampering.
• 1/8″ female NPT pressure ports allow straightforward connection to pressure lines.
• Compact housing ideal for panel mounting in OEM systems or retrofit installations.