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DH DIGIHELIC® Differential Pressure Controller

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Data Sheet (PDF)

$745.70

Item# DH-006

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Lead Time (If not in stock): 3 weeks

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3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money
Velocity of flow modes, a square root output coincides with the actual flow curve for greater precision
Power usage of 120/220 VAC or 24 VDC provides flexibility to incorporate device in control panel
Secure menu program provides access to device operation only for the right skill level

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DH-006 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Pressure Range

Pressure Type

Pressure Port Type

Pressure Port Size

Power Source

Accuracy value

Accuracy Class

Number Of Digits

Electrical Output

Output Signal

Alarm Types (DC/AC)

Additional Features

Specs

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Stability < ±1% per year.
Weight 14.4 oz (408 g).
Output Signal 4-20 mA DC into 900 Ω max.
Pressure Limits Ranges ≤ 2.5 in w.c. = 2 psi
Service Air and non-combustible
Temperature Limits 32 to 140°F (0 to 60°C).
Accuracy ±0.5% at 77°F (25°C) including hysteresis and repeatability.
Display 4 digit LCD 0.4" height. LED indicators for set point and alarm status.
Electrical Connections Screw terminals.
Electrical Rating 8 amps at 240 VAC resistive.
Enclosure Rating Face designed to meet NEMA 4X (IP66).
Mounting Orientation Mount unit in horizontal plane.
Power Consumption Low voltage power = 24 VDC - 130 mA max
Power Requirements High voltage power = 100 to 240 VAC
Set Point Adjustment Adjustable via keypad on face.
Size 1/8 DIN.
Switch Type 2 SPDT relays.
Wetted Materials Consult factory.
Housing Material ABS plastic
Process Connections Compression fitting for use with 1/8" ID X 1/4" OD tubing (3.175 mm ID x 6.35 mm OD). Optional barbed fitting for 3/16" ID tubing.
Response Time 250 ms.
Thermal Effects 0.020%/°F (0.036/°C) from 77°F (25°C).
Agency Approvals CE
Compensated Temperature Limits 32 to 140°F (0 to 60°C).
Panel Cutout 1.772 x 3.620 in (45 x 92 mm).
Serial Communications Modbus® RTU
Zero & Span Adjustments Accessible via menus.

The Series DH Digihelic® Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output. The Digihelic® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 0.5% full scale accuracy on ranges from 0.25 to 100 in. w.c.

The Digihelic® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. Two SPDT control relays with adjustable dead bands are provided along with a scalable 4-20 mA process output. In velocity of flow modes, a square root output is provided on the 4-20 mA signal to coincide with the actual flow curve. The Series DH provides extreme flexibility in power usage by allowing 120/220 VAC or 24 VDC power which is often used in control panels.

Programming is easy using the menu key to access 5 simplified menus which provide access to: security level; selection of pressure, velocity or flow operation; selection of engineering units; K-factor for use with flow sensors; rectangular or circular duct for inputting area in flow applications; set point control or set point and alarm operation; alarm operation as a high, low or high/low alarm; automatic or manual alarm reset; alarm delay; view peak and valley process readings; digital damping for smoothing erratic process applications; scaling the 4-20 mA process output to fit your application's range; Modbus® communications; and field calibration. With all this packed into one product it is easy to see why the Digihelic® controller is the only instrument you will need for all your pressure applications.

Product Applications

SCFM duct flow
Industrial ovens air flow
Filter status
Clean room pressurization
Fume hood air flow
Surgical and medical room pressurization
Damper and fan control

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