Low - Maintenance Series 222 Ultrasonic BTU Meter
The UHM is a highly accurate and stable BTU meter. It utilizes ultrasonic technology to measure household heating and cooling energy consumption. This series UHM is a combined meter, which suit for long distance installation.
The default cable length between calculator and flow sensor is 5 meters. The 8-digit LED display makes reading the measured value simple and easy. The lack of moving parts makes the series UHM a low maintenance unit. These features make it great for installation on chillers, and boilers.
Features
● Works with both heating and cooling systems.
● High accuracy: The high quality ultrasonic transducer and advanced electronic measurement technology work together to ensure the meter's high accuracy and stability.
● No moving parts: This decreases the maintenance cost and ensures that the meter is resistant to dirty water.
● PT1000 platinum resistance.
● Low starting flow-rate: The U-shaped acoustic path widens the dynamic flow-rate measurement range and increases the accuracy of low- and high-end measurements where other, more narrow ranged, devices are inaccurate.
● Horizontal or vertical installation.
● RS485 and M-bus output ports can be used for automated meter reading.
● Automatic diagnostic function. An error code will be displayed on the screen to indicate the problem.
● Ability to install an optional 3.6 V battery that can last up to 6 years.
SPECIFICATIONS
|
Nominal diameter （DN） |
15~400mm |
|
|
Service |
Clean Water |
|
|
Storing/Ambient temperature |
+5～+55℃ |
|
|
Ambient humidity |
<93% |
|
|
Environmental class |
EN1434／CJ128 A Class |
|
|
Accuracy class |
EN1434／CJ128 2 Class |
|
|
Flow range |
50:1 (default) or 100:1(customize) |
|
|
Enclosure protection |
IP65 |
|
|
Pressure loss |
<25kPa/qp |
|
|
Maximum admissible working pressure |
1.6MPa(default)/2.5Mpa(customize) |
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|
Temperature difference threshold value |
0.3K |
|
|
Temperature range |
2～95℃ |
|
|
Temperature difference range |
2～85K |
|
|
Temperature resolution |
0.01℃ |
|
|
Installation |
Horizontal or vertical installing is available |
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|
Rated voltage |
3.6VDC battery |
3.6VDC battery+24VDC |
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Network interface |
M-BUS |
RS485 |
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Communication Protocol |
EN1434, |
MODBUS RTU |
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Baud rate |
2400bps(8,E,1) |
9600bps(8,N,1) |
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Agency Approvals |
CE |
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TYPE SELECTION DN50-DN400
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Dimensions |
Flow-rate |
|||||||
|
mm |
m3/h |
|||||||
|
DN |
L |
D |
H |
D1 |
n-m |
Qmax |
Qp |
Qmin |
|
50 |
200 |
165 |
250 |
125 |
4-M16 |
30 |
15 |
0.3 |
|
65 |
200 |
185 |
265 |
145 |
4-M16 |
50 |
25 |
0.5 |
|
80 |
225 |
200 |
280 |
160 |
8-M16 |
80 |
40 |
0.8 |
|
100 |
250 |
220 |
310 |
180 |
8-M16 |
120 |
60 |
1.2 |
|
125 |
250 |
250 |
330 |
210 |
8-M16 |
200 |
100 |
2 |
|
150 |
300 |
285 |
360 |
240 |
8-M20 |
300 |
150 |
3 |
|
200 |
350 |
340 |
405 |
295 |
12-M20 |
500 |
250 |
5 |
|
250 |
450 |
405 |
460 |
355 |
12-M22 |
800 |
400 |
8 |
|
300 |
500 |
460 |
503 |
410 |
12-M22 |
1200 |
600 |
1.2 |
|
350 |
550 |
520 |
560 |
470 |
16-M22 |
1600 |
800 |
1.6 |
|
400 |
600 |
580 |
613 |
525 |
16-M26 |
2000 |
1000 |
2 |