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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. Ideal for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale.
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. Ideal for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale.
Features
| Switch Specifications | |
| Switch Type | 2 SPDT relays |
| Electrical Rating | 1 A at 30 VAC/VDC |
| Set Point Adjustment | Adjustable via keypad on face |
| General Specifications | |
| 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" and ±0.25" w.c. ranges Ranges 0.5" to 5" w.c. and corresponding bi-directional (except ±2.5" w.c.) ±1% All other ranges: ±0.5% @ 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up) |
| Stability | <±1% per year |
| Pressure Limits | Ranges ≤ 2.5" w.c.: 25 psi ±2.5", 5" w.c.: 5 psi 10" w.c.: 5 psi 25" w.c.: 5 psi 50" w.c.: 5 psi 100" w.c.: 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) 0.25" and ±0.25" w.c. ranges: ±0.03%/°F (±0.054%/°C) |
| Power Requirements | 12 to 28 VDC 12 to 28 VAC 50 to 400 Hz |
| Power Consumption | 3 VA max |
| Output Signal | 4 to 20 mA DC into 900 Ω max |
| Zero and Span Adjustments | Accessible via menus |
| Response Time | 250 ms (damping set to 1) |
| Display | Backlit 4 digit LCD 0.4" height LED indicators for set point and alarm status |
| Electrical Connections | 15 pin male high density D-sub connection. 18" (46 cm) cable with 10 conductors included |
| Process Connections | ⅛" female NPT. Side or back connections |
| Mounting Orientation | Mount unit in vertical plane |
| Dimensions | 5 x 31⁄8" (127 x 79.38 mm) |
| Weight | 1.75 lb (794 g) |
| Agency Approvals | CE |
Click on a category to view a selection of compatible accessories with the Dwyer DHC-004 Digihelic Differential Pressure Controller (0-1"w.c.).
| Switch Specifications | |
| Switch Type | 2 SPDT relays |
| Electrical Rating | 1 A at 30 VAC/VDC |
| Set Point Adjustment | Adjustable via keypad on face |
| General Specifications | |
| 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" and ±0.25" w.c. ranges Ranges 0.5" to 5" w.c. and corresponding bi-directional (except ±2.5" w.c.) ±1% All other ranges: ±0.5% @ 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up) |
| Stability | <±1% per year |
| Pressure Limits | Ranges ≤ 2.5" w.c.: 25 psi ±2.5", 5" w.c.: 5 psi 10" w.c.: 5 psi 25" w.c.: 5 psi 50" w.c.: 5 psi 100" w.c.: 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) 0.25" and ±0.25" w.c. ranges: ±0.03%/°F (±0.054%/°C) |
| Power Requirements | 12 to 28 VDC 12 to 28 VAC 50 to 400 Hz |
| Power Consumption | 3 VA max |
| Output Signal | 4 to 20 mA DC into 900 Ω max |
| Zero and Span Adjustments | Accessible via menus |
| Response Time | 250 ms (damping set to 1) |
| Display | Backlit 4 digit LCD 0.4" height LED indicators for set point and alarm status |
| Electrical Connections | 15 pin male high density D-sub connection. 18" (46 cm) cable with 10 conductors included |
| Process Connections | ⅛" female NPT. Side or back connections |
| Mounting Orientation | Mount unit in vertical plane |
| Dimensions | 5 x 31⁄8" (127 x 79.38 mm) |
| Weight | 1.75 lb (794 g) |
| Agency Approvals | CE |
Click on a category to view a selection of compatible accessories with the Dwyer DHC-004 Digihelic Differential Pressure Controller (0-1"w.c.).
