Showing 1–10 of 239 results

SERIES DH3 ,DWYER, DIGIHELIC® 3 DIFFERENTIAL PRESSURE CONTROLLER

The SERIES DH3 Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage FEATURES/BENEFITS • 3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money • Full scale accuracy of 1% even on extremely low ranges, and 0.5% for ranges above 5 in w.c. provide for greater measurement precision • Secure menu program provides access to device operation only for the right skill level • Optional stainless steel bezel is the same installation diameter as Magnehelic® gage and simplifies field upgrade to DH3 pressure controller APPLICATIONS • SCFM duct flow • Filter status • Duct or building static pressure • Damper and fan control

Series 1900 ,Dwyer,Compact Low Differential Pressure Switches

Series 1900 COMPACT LOW DIFFERENTIAL PRESSURE SWITCHES
Set Points from 0.07 in to 20 in w.c. Repetitive Accuracy within 3%

FEATURES/BENEFITS
• Compact size and repeatability, provides a high-value switch for many industrial and OEM applications
• Wide range of models from 0.07 in w.c. to 20 in w.c. can meet exacting OEM specifications for a low pressure switch
• Range screw protected inside enclosure provides simplifies making adjustments butprevents tampering
APPLICATIONS
• Air conditioning refrigeration coil icing detection; defrost cycle initiation
• Clogged filter detection
• Variable air volume controller

Series 1831,Dwyer, DPDT Low Differential Pressure Switches

Series 1831,Dwyer, DPDT Low Differential Pressure Switches

Manual Reset, No Power Required

FEATURES/BENEFITS
• No power to operate DPDT switch means no additional wiring or conduit reduces material and installation labor costs
• Easy access for modifying set point simplifies adjustment
• Both control contacts activate at the same time eliminating system issues where lead switch activities prevent the lagging switch from sending a signal
APPLICATIONS
• High duct static cutout applications • HVAC

Series DX ,Dwyer,Wet/Wet Differential Pressure Switch

The SERIES DX is a differential pressure switch that makes a contact output based on
the differential between two pressure sources.

FEATURES/BENEFITS
• Differential pressure switch that is suitable for most gas and water-based applications allows multiple uses in the most sophisticated designs
• Weatherproof housing provides protection in the harsh, wet or dirty environments ensuring switch’s long-service life
• Removable terminal block reduces installation time
APPLICATIONS
• Indicating filter differential pressure

• Proving flow through a chiller
• Proof of flow indicator monitoring

• Proving flow through a heat pump or AC unit
• Proving flow through a pump

SERIES 616KD ,Dwyer, DIFFERENTIAL PRESSURE TRANSMITTER ±0.25, ±1 OR 2% ACCURACY

SERIES 616KD ,Dwyer, DIFFERENTIAL PRESSURE TRANSMITTER ±0.25, ±1 OR 2% ACCURACY

FEATURES/BENEFITS
• Simple calibration push-button sets back zero and span, saving time installing and
over the service life
• Cost effective and compact device suitable for OEM applications where space,
simplicity, and value are key
• Ranges and accuracy selection cover a wide range of applications minimizing
components and determining standardizing on design
APPLICATIONS
• Air handlers
• Duct pressure
• Variable air volume
• Filter monitoring

Series 668B/D,Dwyer, Compact Differential Pressure Transmitter

SERIES 668B/D

COMPACT DIFFERENTIAL PRESSURE TRANSMITTER
Ranges from 0.1 to 100 in w.c., Overpressure Protection to 15 psig, ±0.8% Accuracy

FEATURES/BENEFITS
• Protection from 15 psi overpressure & incorrect wiring
• High accuracy at low pressure ranges
• Two package selections allows easy device mounting to best fit application pressure connections
APPLICATIONS
• HVAC and VAV control
• Clean rooms and isolation rooms
• Duct static pressure measurement