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Dwyer Instruments 1640-1 Floating Contact Null Switch

Dwyer Instruments · Model: 1640-1 Made to order
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Dwyer Instruments 1640-1 floating contact null switch with 0.2–1.0 in H2O range, adjustable null span, and precision set points.

Model 1640-1
Manufacturer Dwyer Instruments
Category Pressure Switches
Availability Made to order

Overview

The Dwyer Instruments 1640-1 is a floating contact null switch designed for low differential pressure applications in HVAC and industrial control systems. It provides sensitive, adjustable switching with a compact form factor suitable for duct pressure monitoring and process control applications.

Key Features

  • Pressure range: 0.2–1.0 in H2O
  • Adjustable null span for precise control
  • Minimum set point: 0.02 in H2O
  • Maximum set point: 0.06 in H2O
  • Floating contact design for sensitive switching

Applications

  • HVAC system duct pressure monitoring
  • Air filter differential pressure switches
  • Low-pressure process control
  • Building automation systems
Pressure Range 0.2–1.0 in H2O
Minimum Set Point 0.02 in H2O
Maximum Set Point 0.06 in H2O
Type Floating Contact Null Switch

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Dwyer Instruments 1640-1 Floating Contact Null Switch

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