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| Product Description |
| The single-meter calibrating device may be divided into two types: the testing type and the production type. For testing-type ones there is a section of 15D long straight tube separately in front and at the back of water meter position, Such devices are suitable for calibration and full-performance test of water meters in waterworks and water meter testing station, The production-type ones offer a rapid and time-saving application and they are often used by water meter manufacturers. Among the products those water meters calibrating device with a bore over 80mm have equipped with changing-over unit, electric control cubicle, electric flow regulator and two-position four-way solenoid. All operation adopts hydraulic or pneumatic control by buttons. In addition, a rectifier and a section of tube each with a length of 10D, 5D in front and at the back of meter position individually are equipped for the production-type ones. Which makes it possible to test large bore water meters on these devices. To relieve user’s expense for the products the worktable of large-bore devices can be made from ordinary steel instead of stainless steel. And the working measure , meter clamp and changing-over unit are still made from stainless steel.( For specifications of product see table 1、2 below) |
Table1:
Size
(mm) |
Measures
(L) |
Material |
Structure |
Precision
(Grade) |
Flow rage
(m3/h) |
Applicable
Water meter
(mm) |
15-25 |
10,20,50,100 |
Fully made of Stainless steel |
Adopt calabash structure for all |
0.2 |
0.004-7 |
15,20,25 |
15-50 |
10,20,100,300(500) |
0.04-30 |
15,20,25,40,50 |
40-50 |
100,300(500) |
0.03-30 |
40,50 |
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Remarks:
1. The working measure with brackets () is of testing-type ones.
2. For testing-type devices the length of the straight tube in front and at the back of meter to be tested is 15 times of D.
3. A glass rotor-type device flow meter is equipped for indication of transient flow.
4. This kind of devices can be used for production test , test after maintenance, weekly test and design test.
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Table2:
Size
(mm) |
Measures
(L) |
Material |
Structure |
Precision
(Grade) |
Flow rage
(m3/h) |
Applicable
Water meter
(mm) |
15-100 |
10,20,100,500,
1000(2000) |
Fully made of Stainless steel or worktable is made of ordinary steel |
Adopt calabash structure for all |
0.2 |
0.004-120 |
15,20,25,40,
50,80,100 |
80-100 |
100,500,1000(2000) |
0.3-120 |
80,100 |
50-200 |
50,100,200,500(1000),
1000(2000),3000(5000) |
0.15-600 |
50,80,100,
150,200 |
80-200 |
200,500(1000)
1000(2000),3000(5000) |
0.45-600 |
80,100,150,
200 |
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Remarks:
1. Ditto 1.
2. For testing-type devices the length of the straight tube in front and at the back of meter
To be to be tested is 15 times of D. As for production-type ones the length is 10 times of D in front of the meter to be tested and 5 times of D at the back of meter.
3. The Changing-over unit, two-position four-way solenoid, electric/pneumatic flow regulator and Electric control cubicle are equipped.
4. All operation adopts electric (DC.24V)/pneumatic control by buttons.
5. Rotary tube-changing, hydraulic top indicator and shunt flow indicator.
6. Used for quality test of products and design test in factory.
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| Intelligent water meter on-site Verification Instrument |
15-50 Production type calibrating device |
15-25 Production type calibrating device |
15-50 Rotary calibrating device |
50-200 Testing type calibrating device |
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| 15-50 Testing type calibrating device |
80-100 Production type calibrating device |
15-100 Rotary calibrating device |
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