Dwyer Series DH3 Digihelic Differential Pressure Controller

Dwyer Series DH3 Digihelic Differential Pressure Controller is a 3 in 1 instrument for monitoring and controlling pressure, velocity and volume flow. The Dwyer DH3 has 2 x SPDT relay switches and a scalable 4…20mA output. Suitable for very low pressure applications, with ranges starting from 0…0.25″wc (0.6mbar) to 0…100″wc (250mbar).

Dwyer Series DH3 Digihelic Differential Pressure Controller is commonly used in the HVAC industry, particularly suited to fan control, damper control, filter status and air flow measurement in ducts.

The Dwyer DH3 is a programmable controller with a large, bright LCD display. SPDT relays have adjustable deadbands and 4…20mA output can be scaled to suit the required application range. A selection of commonly used engineering units can be displayed, and circular or rectangular duct dimensions can be input to allow calculation of volume flow. Set points and/or alarms can be set as well as digital damping to smooth out erratic processes.

The Dwyer Series DH3 Digihelic Differential Pressure Controller is also available with an explosion proof, ATEX enclosure for use in hazardous areas.

Dwyer DH3 Digihelic Differential Pressure Controller features…

• 3 in 1 pressure, velocity and flow controller
• Very low pressure range from 0.25″wc
• 1.5% accuracy <5″wc, 0.5% accurate > 5″wc
• 2 x SPDT relays, with adjustable deadband
• high/low alarms with optional manual reset
• Digital damping
• 4…20mA scalable output
• Option of ATEX version to II2 GD Ex d IIC Gb T6; -50°C ≤ Ta ≤ +60°C Ex tb IIIC Db T 85°C
• Backlit LCD display

Fluidic are a recognised partner of Dwyer Instruments for Scotland and the North of England.  Our instrumentation engineers are product trained and are able to help with instrument selection within the full Dwyer Instrument supply scope. We offer multiple instrumentation assembly services and can supply with calibration certification where desired.   Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).