Series DH3 Digihelic Differential Pressure Controller

Name: Series DH3 Digihelic Differential Pressure Controller
SKU: placeholder-series-dh3-digihelic-differential-pressure-controller
Price: 462.00 USD
Availability: InStock

3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output

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Series DH3 Digihelic Differential Pressure Controller 02370 xl

The Series DH3 Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output all packed in the popular Photohelic® gage style housing. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money. The Digihelic® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25 in W.C. to 2.5 in W.C. full scale. Ranges of 5 in W.C. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

The Series DH3 Digihelic® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable deadbands are provided along with a scalable 4 - 20 mA process output.

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 reading; digital damping for smoothing erratic process applications; scaling the 4 - 20 mA process output to fit your applications range and field calibration.

Please see Series AT2DH3 for ATEX approval.

• 3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money

• Full scale accuracy of 1.5% 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

Service	Air and non-combustible, compatible gases
Wetted Materials	Consult factory
Housing Material	Die cast aluminum case and bezel
Accuracy	± 1.5% for 0.25 in W.C. and ± 0.25 in W.C. ranges Ranges 0.5 in W.C. to 5 in W.C. and corresponding bi-directional (except ± 2.5 in W.C.) ± 1%; All other ranges: ± 0.5% @ 77°F (25°C) including hysteresis and repeatability (after 1 hr warm-up)
Stability	< ± 1% per year
Pressure Limits	Ranges ≤ 2.5 in W.C.: 25 PSI; ± 2.5 in W.C., 5 in W.C.: 5 PSI; 10 in W.C.: 5 PSI; 25 in W.C.: 5 PSI; 50 in W.C.: 5 PSI; 100 in W.C.: 9 PSI
Temperature Limits	32°F - 140°F (0°C - 60°C)
Compensated Temperature Limits	32°F - 140°F (0°C - 60°C)
Thermal Effects	0.020%/°F (0.036/°C) from 77°F (25°C). For 0.25 in W.C. and ± 0.25 in W.C. ranges: ± 0.03%/°F (± 0.054%/°C)
Power Requirements	12 VDC - 28 VDC, 12 VAC - 28 VAC, 50 Hz - 400 Hz
Power Consumption	3 VA max
Output Signal	4 - 20 mA DC into 900 Ω max
Zero & Span Adjustments	Accessible via menus
Response Time	250 ms (damping set to 1)
Display	Backlit 4 digit LCD 0.4 in height LED indicators for set point and alarm status
Electrical Connections	15 pin male high density D-sub connection. 18 in (46 cm) cable with 10 conductors included
Process Connections	1/8 in female NPT. Side or back connections
Mounting Orientation	Mount unit in vertical plane
Size	5 in (127 mm) OD x 3-1/8 in (79.38 mm)
Weight	1.75 lb (794 g)
Agency Approvals	CE
SWITCH SPECIFICATIONS
Switch Type	2 SPDT relays
Electrical Rating	1 A @ 30 VAC/VDC
Set Point Adjustment	Adjustable via keypad on face