WHAP is a mechanical meter designed for use with heating water at temperatures up to 130 °C. This Woltmann meter is the ideal primary element for a separate energy meter, combined with a separate electronic unit and a pair of temperature sensors. A complete range of vane-wheel meters from DN50 to DN300 is available. The meter is compatible with Maddalena KS3C calculators and KPTEG sensors.
• Measuring principle: axial turbine
• DN: 50 ÷ 300
• MID MI-004 certified
• Accuracy class: 2 (EN 1434)
• Flanged cast iron body, internally and externally coated
• Hermetically sealed register (IP68), 360-degree rotatable
• Direct reading on 7-digit numerical rollers
• Supplied with reed switch pulse emitter
• Horizontal and vertical installation
| Diameter | mm | 50 | 65 | 80 | 100 |
|---|---|---|---|---|---|
| Inches | 2 | 2 1/2 | 3 | 4 | |
| L | mm | 200 | 200 | 225 | 250 |
| h | mm | 72 | 83 | 95 | 105 |
| H | mm | 187 | 197 | 219 | 229 |
| D | mm | 165 | 185 | 200 | 220 |
| Weight | kg | 9,9 | 10,6 | 13,3 | 15,6 |
| Diameter | mm | 125 | 150 | 200 | 250 | 300 |
|---|---|---|---|---|---|---|
| Inches | 5 | 6 | 8 | 10 | 12 | |
| L | mm | 250 | 300 | 350 | 450 | 500 |
| h | mm | 120 | 135 | 160 | 193 | 230 |
| H | mm | 257 | 357 | 382 | 427 | 497 |
| D | mm | 250 | 285 | 340 | 400 | 460 |
| Weight | kg | 18,1 | 40,1 | 51,1 | 75,1 | 103,1 |
| Measurement method | Ultrasonic; time of flight (TOF) |
|---|---|
| Accuracy class (MID) | Class 2 |
| Environmental class | Class C |
| Mechanical class | M1 |
| Electromagnetic class | E2 |
| Storage temperature | -20°C ÷ +60°C |
| Protection class | IP68 |
| Module B nr. | SK 11-MI004-SMU001 |
| Module D nr. | SK 23-QD-SMU003 |
| Installation position | Any U0-D0 |
|---|---|
| Flow range | 1:25 |
| Temperature range | +1°C ÷ +130°C |
| Recommended temperature range for heating applications | +10°C ÷ +130°C |
| Maximum temperature | 150°C for 2000 hours |
| Maximum overload | 1,25 x qₚ |
| Nominal pressure | DN50 ÷ DN200: PN16 DN250 ÷ DN300: PN10 |
| Type | Open drain |
|---|---|
| Pulse length | 100 ms |
| Pulse type | Synchronous |
| Pulse options | N50 ÷ DN125: 1/100L DN150 ÷ DN300: 1/1000L |
| Cable length | 3 m |
| Voltage | Max: 12 Vdc |
| Current | Max: 10 mAdc |
| Closed-contact resistance | 100 Ω |
| Maximum output pulse frequency |
10 Hz |
