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Đồng Hồ Đo Chênh Áp Series DH
| Model | : | SERIES DH |
| Manufacturer | : | DWYERS |
| Origin | : | USA |
| Service | : | Air and non-combustible, compatible gases. |
| Wetted Materials | : | Consult factory. |
| 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 |
| 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 indicatorsfor |
| 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 Cutout | : | 1.772 x 3.620 in (45 x 92 mm). |
| Weight | : | 14.4 oz (408g). |
| Serial Communications | : | Modbus® RTU, RS485, 9600 baud. |
| Agency Approvals | : | CE, UL. |
| SWITCH SPECIFICATIONS | ||
| Switch Type | : | 2 SPDT relays |
| Electrical Rating | : | 8 amps at 240 VAC resistive. |
| Set Point Adjustment | : | Adjustable via keypad on face. |
| Available Pressure Engineering Units | ||||||||||||
| Model | in wc | ft wc | mm wc | cm wc | psi | in Hg | mm Hg | mbar | Pa | kPa | hPa | oz/in² |
| DH-002 DH-004 DH-006 DH-007 DH-008 DH-009* DH-010* |
.2500 1.000 5.000 10.00 25.00 50.00 100.0 |
.4167 |
6.350 25.40 127.0 254.0 635.0 1270 2450 |
0.635 2.540 12.70 25.40 63.50 127.0 254.0 |
.1806 |
|
0.467 1.868 9.342 18.68 46.71 93.42 186.8 |
0.623 2.491 12.45 24.91 62.27 124.5 249.1 |
62.28 |
0.249 1.245 2.491 6.227 12.45 24.91 |
0.623 2.491 12.45 24.91 62.27 124.5 249.1 |
0.144 0.578 2.890 5.780 14.45 28.90 57.80 |
Bi- Directional* Ranges also available:
DH-012, Range: 0.25 - 0 - 0.25" w.c.
DH-014, Range: 1.0 - 0 - 1.0" w.c.
DH-015, Range: 2.5 - 0 - 2.5" w.c.
DH-016, Range: 5 - 0 - 5" w.c.
DH-017, Range: 10 - 0 - 10" w.c.
*Velocity and volumetric flow not available on bi-directional range units and models DH-009 & DH-010.
ACCESSORIES
The Mother Node and Mini-Node converters are an easy solution for utilizing the Digihelic® Controller's RS-485 serial communication and connecting to virtually any PC.
MN-1, Mini-Node USB/RS-485 converter
351-9, Mother Node silver RS-232 to RS-485 Converter with DB9F Connector. Includes 120 VAC to 12 VDC adapter
A-266, Digihelic® surface mounting bracket
A-203, 1/8" I.D x 1/4" O.D. PVC tubing
Digihelic Links, Communication Software
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Website: www.caovietcuong.com | www.thietbidomuc.com
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