Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
Page 10 of 19
Table 4. Maximum permitted loads for irrigation flow meters
Type (irrigation flow meter size) Maximum operating flow rate Maximum monthly load limit
DN (mm)
m
3
/h m
3
/month
40
25 10,800
50
30 12,960
65
50 21,600
80
80 34,400
100
125 54,000
125
175 75,600
150
250 108,000
200
450 194,000
250
70 302,000
6. Delivery inspection
The measurement device as supplied by the manufacturer requires inspection to verify that no external
shipping damage is present, especially on the body, the body flanged ends, the counter guard, and the
wiring (if the version includes a transmitter module).
Verify that the tamper seals match the verification or security markings, that the seals are securely installed,
and that the water/flow meter part designation markings are present.
The following markings are affixed to the counter dial, nameplate, or body of each water meter:
• Manufacturer’s name/logo and full address details;
• MID type examination marking;
• Type trademark;
• Serial number;
• Production year;
• The metrological marking comprises the capital letter M and the two last digits of the production year
in which the marking was applied to the measurement device;
• Direction of flow, shown with an arrow (on the body);
• The V mark for vertical piping, where the water meter is to be installed in the vertical orientation;
• The H mark for horizontal piping, where H denotes that the water meter is to be installed in the
horizontal orientation with its counter pointing upward;
• The H mark for horizontal piping, where H denotes that the water meter is to be installed in
the horizontal orientation with its counter pointing sideways;
• The HV mark for horizontal and vertical piping water meters;
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