Woltman meter
WPDH BMF
Product categories
Water,
Heat / Cooling
Woltman meter for hot water up to 130 °C
DN 50, 65, 80, 100, 125, 150, 200
Water
Heat / Cooling
Smart Building
Your benefits
- Robust, high grade wear resistant materials:
Excellent measuring stability and reliability - Removable measuring insert:
Retrofittability and replaceability guaranteed
Applications
- Measurement of high, relatively constant flow rates
- Measuring of
- Desalinated / demineralized water
- Caustic soda up to 20%
- Saline water up to 10%
- Chlorinated water up to 1%
- Glycol-water solutions up to 30%
- Caustic solutions up to pH value 9
Properties
- Non-ferrous metal design
- Universal installation position
- Straight flow section 3xDN
- Register can be turned through 355°
- Maximum operating pressure PN 16 bar
- Temperature up to 130 °C
- Rotor is hydrodynamically balanced
- Symmetrical calibration ring
- Powder coating provides optimum corrosion protection
- Flood proof standard pulser register (IP68) with ports for two Reed-RD-Pulsers and one Opto-OD-Pulser
Product information
Technical Data
| Nominal diameter | DN | mm | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
| Operating pressure | PN | bar | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Nominal flow rate | Qn | m3/h | 15 | 25 | 45 | 70 | 100 | 150 | 250 |
| Overload flow rate (1x24 h) | Qmax | m3/h | 30 | 60 | 90 | 140 | 200 | 300 | 500 |
| Transitional flow rate ±3% | Qt | m3/h | 1,8 | 2,0 | 3,2 | 4,8 | 8 | 12 | 20 |
| Minimum flow rate ±5% | Qmin | m3/h | 0,6 | 1,0 | 1,4 | 2,0 | 3,5 | 4,5 | 8 |
| Starting flow | app. m3/h | 0,25 | 0,3 | 0,35 | 0,6 | 1,1 | 1,7 | 2 | |
| Temperature | max. °C | 130 | 130 | 130 | 130 | 130 | 130 | 130 | |
| Dimensions and weights | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Length | L | mm | 200 | 200 | 225 | 250 | 250 | 300 | 350 |
| Height | H | mm | 120 | 120 | 150 | 150 | 160 | 177 | 206 |
| Height | h | mm | 73 | 85 | 95 | 105 | 118 | 135 | 162 |
| Dismantling height of measuring unit | g | mm | 200 | 200 | 270 | 270 | 280 | 356 | 441 |
| Meter weight | app. kg | 7,7 | 10 | 14 | 18 | 20,5 | 35,5 | 50,5 | |
| Measuring unit weight | app. kg | 1,4 | 1,4 | 3 | 3 | 3 | 5,5 | 7,5 | |
| Body weight | app. kg | 6,3 | 8,6 | 11 | 15 | 17,5 | 30 | 43 | |
| PTB approval | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal flow rate | Qn | m3/h | 15 | 25 | 40 | 60 | 100 | 150 | 250 |
| Overload flow rate (1x 24 h) | Qmax | m3/h | 30 | 50 | 80 | 120 | 200 | 300 | 500 |
| Transitional flow rate ±3% | Qt | m3/h | 2,25 | 3,75 | 6 | 9 | 15 | 22,5 | 37,5 |
| Minimum flow rate ±5% | Qmin | m3/h | 0,6 | 1,0 | 1,6 | 2,4 | 4 | 6 | 10 |
| Metrological class | B | B | B | B | B | B | B | ||
Dimension Diagram
Materials
| Body | Non-rusting steel |
| Measuring unit | Plastic |
| Rotor | Plastic |
| Other materials | Non-rusting steel |
Measuring error curve
Installation
| Pipeline | horizontal |  |
| vertical |  | |
| diagonal |  | |
| Meter head | upwards |  |
| sideways |
Typical Head Loss Curve
Installation requirements
3xDN straight pipe upstream of the meter. No abrupt restrictions directly downstream of the meter.
Pulse value table
| Pulse generator | Register type | DN 50 …125 m3 | DN 150 …200 m3 |
|---|---|---|---|
| Reed RD 02 | 4/10 4/40 | 0,25 and 0,1 0,25 and 0,025 | 2,5 and 1 2,5 and 0,25 |
| Opto OD 02 | 4/10 4/40 | 0,001 | 0,01 |
| Opto OD 04 | 4/10 4/40 | 0,01 | 0,1 |
Dial
| Nominal diameter | DN | 50 –125 | 150 – 200 |
| Smallest reading | m3 | 0,0005 | 0,005 |
| Maximum register reading | m3 | 1’000’000 | 10’000’000 |