Mô tả sản phẩm
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
.8333
2.083
4.167
8.333
|
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
.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:
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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