Woltmann Water Meter Type WMAP EVO

The Woltmann water flow meter WMAP type is an axial helix (the axis of the helix is coaxial to the axis of the pipe) . The magnetically driven register operates in a dry compartment and the helix is submerged in water. Readability is ensured by the tempered mineral glass lens: its flat and smooth surface, unlike plastic lenses, is scratch-resistant and does not turn opaque.

Woltmann irrigation water meters are ideal for sub/secondary billing for domestic applications, batch control and also for water monitoring in industrial/commercial applications, borehole and irrigation. It has working pressure up to 16bar, can be used in cold water up to 50⁰C and is available in 2” (50mm) and 6” (150mm) sizes. 

Specifications;

• Tempered mineral glass lens with adequate thickness
• The counter is housed in  a dry compartment which has no contact with the water ensuring continued readability
• Straight reading on 7 numbered drums for the cubic meters and 2 fractional dials for submultiples.
• The MID inscriptions are on a metallic label applied on a meter's flange
• Metallic lockable lid
• Pulsed meters maintain the metrological seal and protected by cover
• No upstream (use of flow straighteners) and downstream straight pipe requirements
• Hydraulic tests are carried out at three flow rates (Q1, Q2, Q3) on 100% of the production. Out testing benches comply with standards ISO 4064/3 and ISO 4185 (EN 14154/3) and are approved by a European notified body
• Cast iron flanged body; internal and external epoxy powder costing
• Steel pivot, synthetic sapphire bearing
• Internal mechanism made of anhygroscopic, anti-scaling and hard-wearing plastic materials
• Maximum water temperature: 50ºC
• Nominal pressure (PN): 10 or 16 bar

Installation Recommendations:

To maintain the accuracy of readings the minimum straight lengths of pipe, before and after the meter, should be 10 times and 5 times the internal pipe diameter, respectively.

If you require certification for the meter, please contact us to discuss your requirements further.

• The Woltman meters are pre-equipped for two pulse outputs as a standard. The pulse emitter can be retrofitted maintaining both the meter functionality and design.
   
• Meters can be be installed both in horizontal and vertical position. Performance is unaffected by the installation conditions and the water characteristics.
   
• The meters comply with directive 2004/22/EC (annex MI-001) and have undergone conformity assessment procedure B+D. The maximum measuring range Q3/Q1 (R) certified is 100. Lower measuring ranges are also available (R80, R50, etc.).
   
• They certified for use with potable water in accordance with Italian (D.M. 6 April 2004 no. 174) and international regulations