Digihelic Differential Pressure Controller - Standard Filter Corporation - #1

CORPORATION

Phone: 760.929.8559 • 1.800.634.8537 • Fax: 760.929.1901 • www.standardfilter.com 5928 Balfour Court • Carlsbad, California 92008

1-15/16 (49.21)

3-19/32 ^_ (91.28)-

3-25/32 " (96.04) "

4-1/2 (114.30)

1-3/4 JBl (44.45)*

_1/2 (12.70)

4-1/2 (114.30)

TheDwyer Series DH Digihelic" DifferentialPressure Controller is a 3-in-1 instrument possessing a digital display

gage, control relay switches, and a transmitter with current

output. Combining these three features allows the reduction of several instruments with one product, saving inventory,

installation time and money. The Digihelic^® is the ideal

instrument for pressure, velocity and flow applications, achieving a 0.5% full scale accuracy on ranges from 5 to 100 in. w.c.

The Digihelic^® 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 4-20mA process output. The Series DH provides extreme flexibility in power usage by allowing 120/220 VAC and also 24 VDC power which

is often used in control panels.

Programming is easy using the menu key to access five 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 dampening for smoothing erratic process

applications; scaling the 4-20mA 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^® is the only instrument you will need for all your

pressure applications.

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Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Housing Material: ABS plastic, UL approved 94-V-0.

Accuracy: ±0.5% at 77jF (25jC) including hysteresis and

repeatability.

Stability: < ±1% per year.

Pressure Limits: 3 X range.

Temperature Limits: 32 to 140| F (0 to 60|C).

Compensated Temperature Limits: 32 to 140| F (0 to 60|C).

Thermal Effects: 0.020%/| F (0.036/ C) from 77i F (25j C). Power Requirements: High Voltage Power = 100 to 240 VAC, 50 to 400 Hz or 132 to 240 VDC. Low Voltage Power = 24 VDC ±20%. Power Consumption:

Low Voltage Power = 24 VDC - 130 mA max.

High Voltage Power = 100 to 240 VAC, 132 to 240 VDC - 7VA

max.

Output Signal: 4-20 mA DC into 900 ohms max. Zero & Span Adjustments: Accessible via menus. Response Time: 250 ms.

Display: 4 digit LCD 0.4 height.

LED indicators for set point and alarm status.

Electrical Connections: Screw terminals.

Process Connections: Compression fitting for use with 3/16

OD X 1/8 ID tubing.

Enclosure Rating: Face designed to meet NEMA 4X (IP66). Mounting Orientation: Mount unit in horizontal plane. Size: 1/8 DIN.

Panel Cut-out: 1.772 x 3.620 in (45 x 92 mm). Weight: 14.4 oz. (408 g).

Serial Communications: Modbus RTU, RS485, 9600 Baud.

Switch Type: 2 SPDT relays.

Electrical Rating: 8 Amps at 240 VAC resistive.

Set Point Adjustment: Adjustable via keypad on face.