Mô tả sản phẩm
Đồng Hồ Đo Chênh Áp Series DHII
| Model |
: |
DHII |
| Manufacturer |
: |
DWYERS |
| Origin |
: |
USA |
| Service |
: |
Air and non-combustible, compatible gases. |
| Wetted Materials |
: |
Consult factory. |
| Housing Material |
: |
Aluminum, glass. |
| Accuracy |
: |
±0.5% at 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up). |
| 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 (dampening set to 1). |
| Display |
: |
4 digit backlit LCD 0.6" height. LED indicators for set point and alarm status. |
| Electrical Connections |
: |
Euro type removable terminal blocks with watertight conduit fittings for 1/2" watertight conduit. |
| Process Connections |
: |
1/8" female NPT. |
| Enclosure Rating |
: |
Designed to meet NEMA 4 (IP66) |
| Mounting Orientation |
: |
Mount unit in horizontal plane. |
| Size |
: |
4.73" x 4.73" x 3.43" (120 mm x 120 mm x 87.1 |
| Weight |
: |
2 lb 10 oz (1.19 kg) |
| 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
.8333
2.083
4.167
8.333
|
6.350
25.40
127.0
254.0
635.0
1270
2540 |
0.635
2.540
12.70
25.40
63.50
127.0
254.0 |
.1806
.3613
.9032
1.806
3.613
|
.3678
.7356
1.839
3.678
7.356
|
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
249.1
1245
2491
6227
|
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:
DHII-012, Range: 0.25 - 0 - 0.25" w.c.
DHII-014, Range: 1.0 - 0 - 1.0" w.c.
DHII-015, Range: 2.5 - 0 - 2.5" w.c.
DHII-016, Range: 5 - 0 - 5" w.c.
DHII-017, Range: 10 - 0 - 10" w.c.
*Velocity and volumetric flow not available on bi-directional range units and models DHII-009 & DHII-010
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