Hunan Changde Water Meter Manufacture Co., Ltd.
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large diameter hot water meter & Woltmann
Working condition(s)
Water temperature 0.1~90℃, Working pressure ≤1MPa.(1.6Mpa available)
Accuracy
Low region max. allowable error: From Q1 inclusive up to but excluding Q2 is ± 5%.
High region max. allowable error: From Q2 inclusive up to and including Q 4 is ± 2%.
| Product model | Diameter | Flow rate m³/h | Indication | |||||||
| Initial flow rate | Overload flow rate (Q4) | Normal flow rate (Q3) | Transitional flow rate (Q2) | Min. flow rate (Q1) | Min Reading (Min) | Max. Reading (Max) | ||||
| Horizontal Woltman water meter | W P H | Cold water: R80 Q2/Q1=6.3 GB/T 778.1-2007 Heat water: R50 Q2/Q1=6.3 GB/T 778.1-2007 0.0005 | Dry type: 999999.999 | |||||||
| 40 | - | 50/31 | 40/25 | 3.15 | 0.5 | 0.001 | ||||
| 50 | - | 50/31 | 40/25 | 3.15 | 0.5 | |||||
| 65 | - | 80/50 | 63/40 | 5.0 | 0.79 | |||||
| 80 | - | 125/78 | 100/63 | 7.90 | 1.25 | |||||
| 100 | - | 200/125 | 160/100 | 12.6 | 2.0 | |||||
| 125 | - | 312/200 | 250/160 | 19.7 | 3.12 | |||||
| 150 | - | 500/312 | 400/250 | 31.5 | 5.0 | 0.01 | ||||
| 200 | - | 780/500 | 630/400 | 50.4 | 8.0 | |||||
Pressure Loss Curve
