Dwyer DHC Series DIGIHELIC® Differential Pressure Controller
Digihelic differential pressure controller, three-in-one display + control + transmitter, supports Modbus or BACnet.
- Original Factory Genuine, Tenfold Compensation for Counterfeits
- Full Machine Warranty, Lifetime Maintenance
- In Stock, Shipped on the Same Day
The DHC Series Digihelic differential pressure controller combines a digital display, control relays and transmitter in one unit, reducing the number of field instruments. Accuracy ±0.5% FSO, with 2 sets of SPDT relays, 4-20mA and optional voltage output, communication selectable as Modbus RTU or BACnet MS/TP.
| Parameter Name | Technical Specifications |
|---|---|
| Main specifications | |
| Medium | Air, non-combustible compatible gases |
| Material | Consult factory |
| Housing material | Polycarbonate |
| Accuracy | ±0.5% FSO for all ranges, except ±1% FSO for the 0.5 in w.c. range and ±1.5% FSO for ranges of ±0.25 in w.c. or less |
| Stability | < ±1% FSO per year |
| Temperature limit | -4 to 158°F (-20 to 70°C) |
| Temperature effect | 0.02% FS/°F (0.036% FS/°C) |
| Power requirements | 12-28 VDC or 12-28 VAC 50 to 400 Hz |
| Power dissipation | 3 VA maximum |
| Output Signal | 4-20 mA (4-wire); 0-10 V, 0-5 V, 1-5 V and 2-10 V (4-wire) |
| Communication | BACnet MS/TP or Modbus® RTU |
| Supported baud rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Device load | 1/8 unit load |
| Zero and span adjustment | Configurable via menu |
| Response time | 400 ms (when damping is set to 0) |
| Display | Backlit LCD display, LED status indicators |
| Electrical connection | 15-pin high-density D-sub male connector. Supplied with 18˝ (46 cm) 15-conductor cable |
| Process connection | 1/8˝ NPT female ports on side and back |
| Degree of protection | NEMA 4X (IP66) |
| Mounting orientation | Any orientation |
| Size | 5˝ (127 mm) x 1.9˝ (48 mm) deep |
| Weight | 8.8 oz (250 g) |
| Pressure limits | Range > 1 in w.c.: maximum operating pressure 6 psi, burst pressure 6 psi; range ≤ 1 in w.c.: maximum operating pressure 3.6 psi, burst pressure 6 psi |
| Housing material | Polycarbonate |
| Zero and span | Configured via menu |
| Switch type | 2 sets of SPDT relays, 1A @ 30 VAC/VDC |
| Certification | BTL, CE |
| Model selection | |
| Selection table | Published on the official website as a screenshot of the model selection table; for complete model numbers and ranges, see the official manual "DHC Series Chinese Product Documentation.pdf" in the documentation package. |
- One device combines digital display, control relays and transmitter output
- Accuracy ±0.5% FSO (±1.5% for ≤0.25" w.c.)
- 2 sets of SPDT relays, adjustable deadband
- 4-20mA and 0-10V/0-5V/1-5V/2-10V outputs available
- Communication options: Modbus RTU or BACnet MS/TP
Cleanroom differential pressure control
Controls supply fans or dampers based on the differential pressure setpoint while uploading data.
Dust collector differential pressure monitoring
Monitors filter bag differential pressure and outputs an alarm when the limit is exceeded.
Need selection advice or bulk quotation?
Send us the working condition parameters (signal type, medium, range, pressure, temperature, connection method), and our engineers will provide a selection scheme and quotation within 1 working day.
- Phone consultation +86-21-66020232
- Email inquiry web@qishan-sh.com
