Impulse DN50
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Impulse DN80
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Impulse DN65

Cold water meters (hereinafter referred to as meters) are designed to measure the volume of drinking water flowing through the pipeline at a temperature of 5 ° C to 40 ° C and a working pressure in the pipeline network not exceeding 1.6 MPa. . The hot water meter is universal and can be used to measure the flow of cold water. Included in the State Register of Measuring Instruments No. 01.0013.

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Description

The meter is used for accounting, including commercial, water consumption in industrial and domestic sectors, as well as for monitoring technological processes.

Basic technical data and characteristics

Parameter Meaning

65 – ХВС
Permissible relative error margin, %, within the cost limit
– From Qmin to (inclusive) Qt
– From Qt to (inclusive) Qmax		 ±5

±2
Nominal flow Qn, m3/h 25
Maximum flow Qmax, m3/h 50
Flow rate Qt,m3/hour 5
Minimum flow Qmin, m3/h 0,75
Maximum working water pressure, not more than MPA 1.6
Pressure loss at Qmax, not more than MPa 0,01
Capacity of the counting mechanism, m3 99999
Sensitivity limit m3/hour not more than 0,3 Qmin
Average meter life 12 years
Calibration interval2 years  2 years

 

Notes

1. Maximum flow Qmax is the highest water flow at which the meter must operate normally for a short time with an error not exceeding permissible limits.
2. Nominal flow Qn is half of the maximum flow Qmax. The nominal flow expressed in m3/h is used to specify the meter. At Qn, the meter operates satisfactorily under normal operating conditions, i.e. in constant or periodic flow mode.
3. Transient flow Qt is a flow of water whose change in value is allowed in the sketch.
4. Minimum flow rate Qmin is the nominal flow rate at which the error shown on the diagram does not exceed the permissible limit. Minimal consumption is defined as Qmin Qn.