Dwyer DHII Digihelic® Series Differential Pressure Controller
Digihelic II differential pressure controller, NEMA 4 (IP66) aluminium enclosure, 2 x SPDT + 4-20mA + Modbus.
- Original Factory Genuine, Tenfold Compensation for Counterfeits
- Full Machine Warranty, Lifetime Maintenance
- In Stock, Shipped on the Same Day
The DHII Series Digihelic II builds on the DH with a NEMA 4 (IP66) die-cast aluminium enclosure, suitable for outdoor and washdown environments. It features 2 SPDT relays, a 4-20mA process output and Modbus communication, a 4-digit backlit LCD readable from a distance, and detachable terminal blocks for ease of installation.
| Parameter Name | Technical Specifications |
|---|---|
| Main specifications | |
| Medium | Air and non-combustible, non-conductive compatible gases. |
| Wetted materials | Please consult factory. |
| Housing | Aluminium, glass |
| Enclosure material | ABS plastic, UL |
| Certification | 94-V-0. |
| Accuracy | ±0.5% at 77°F (25°C) including linearity and hysteresis. |
| Stability | < ±1%/year. |
| Pressure limits | Range 5": 5 Psi; 10": 5 Psi; 25": 5 Psi; 50": 5 Psi; 100": 9 Psi. |
| Temperature limit | 32~140°F. (0~60°C). Temperature compensation: 32~140°F. (0~60°C). |
| Power Supply | High voltage source = 100 To 240 VAC, 50-400 Hz Or 132-240VDC. Low voltage |
| Power dissipation | Low voltage |
| Output Signal | 4-20 MA DC Into 900 Ohms Max. |
| Zero and full-scale adjustment | Easily adjusted per manual. Response time: 250 ms. |
| Display | 4-digit LCD 0.4" high. LED indicates setpoint and alarm. |
| Electrical connection | Screw terminals. |
| Process connection | 3/16" OD X 1/8" ID compression fitting. |
| Enclosure | NEMA 4X (IP66). |
| Mounting orientation | Horizontal installation. Size: 4.73″×4.73″×3.43″ (120mm×120mm×87.1mm) |
| Weight | 2lb10 Oz (1.19kg). |
| Communication | Modbus RTU, RS485, 9600 Baud. Switch features: |
| Switch type | 2 SPDT relays |
| Rated current | 8A, 240V |
| Set Point Adjustment | Adjusted via panel |
| Model selection | |
| Selection table | Published on the official website as a screenshot of the selection table; for complete model numbers and ranges, see the official manual "DHII.i.pdf" in the documentation package. |
- NEMA 4 (IP66) die-cast aluminium enclosure, suitable for outdoor and washdown environments
- Backlit 4-digit LCD, readable from a distance
- 2 sets of SPDT relays + 4-20mA + Modbus communication
- Detachable terminal blocks; wire externally first, then plug into the main board, reducing installation time
Outdoor unit differential pressure monitoring
Installed on rooftop units; weather-resistant enclosure withstands sun and rain.
Dust removal system differential pressure control
Controls pulse-jet cleaning or alarms based on differential pressure.
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
