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Dwyer 4201B Capsuhelic Differential Pressure Gauge

Dwyer Instruments · Model: 4201B Made to order
Dwyer 4201B Capsuhelic Differential Pressure Gauge
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Dwyer 4201B is a brass capsule differential pressure gauge with 0–1 psi range, ideal for HVAC filters, ductwork, and industrial process pressure monitoring.

Model 4201B
Manufacturer Dwyer Instruments
Category Analog Pressure Gauges
Availability Made to order

Overview

The Dwyer 4201B is a capsule-type differential pressure gauge with a durable brass case, designed for reliable low-pressure measurement in the 0 to 1 psi range. It is commonly used for monitoring pressure drops across filters, dampers, and low-pressure industrial processes, providing clear indication of system performance and filter condition in HVAC and other mechanical systems.

Key Features

  • Brass gauge case for corrosion resistance and durability
  • Capsule sensing element for accurate low-differential-pressure measurement
  • Measurement range 0–1 psi (0–27.7 in H₂O)
  • Factory-calibrated zero adjustment for accurate baseline reading
  • Panel-mount or bracket-mount installation options
  • Long-lasting sensing element for extended service life

Applications

  • HVAC filter pressure drop monitoring
  • Ductwork and air damper pressure measurement
  • Compressed air line monitoring and control
  • Low-pressure industrial process control and indication
Pressure Range 0–1 psi
Gauge Type Capsule differential
Case Material Brass
Connection 1/4 in NPT
Dwyer 4201B Capsuhelic Differential Pressure Gauge

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Dwyer 4201B Capsuhelic Differential Pressure Gauge

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