| Feature: |
| 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. Combining these three 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 0.5% full scale accuracy on ranges from 5 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. 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 damping 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® Controller is the only instrument you will need for all your pressure applications Applications
- Dust Collection Bag Filters
- SCFM Flow In Ducts
- Air Flow for Industrial Ovens
- Filter Status
- Clean Room Pressure
- Fume Hood Air Flow
- Pharmaceutical or Bio-Medical Glove Box Pressures
- Static Pressures in Ducts or Buildings
- Damper Control
- Fan Control
|
| Specifications: |
| Service | Air and non-combustible, compatible gases |
| Wetted Materials | Chat with Agent |
| Housing Material | ABS plastic, UL approved 94-V-0. |
| Accuracy | ±0.5% at 77°F (25°C) including hysteresis and repeatability |
| Stability | < ±1% per year |
| Pressure Limits | Ranges ≤ 2.5 in. w.c. = 2 psi 5˝: 5 psi; 10˝: 5 psi; 25˝: 5 psi; 50˝: 5 psi, 100˝: 9 psi. |
| 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 77°F (25°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 1/8˝ ID X 1/4˝ OD tubing (3.175 mm ID x 6.35 mm OD). |
| 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. |
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