- The Esders DWZ Digital Water Flowmeter allows quick and precise measurement of water flow volumes. It is very easy to operate and complies fully with DVGW Worksheet W 400-2 (national implementation of EN 805). As specified in Worksheet W 400-2 (September 2004), pressure testing of PE 80, PE 100, PE-Xa and PVC-U pressure pipe must be done by the contraction process. This procedure specifies rapid pressure bleed-off from the system over a period of 2 minutes and determination of the resultant volume flow VBL. For a water loss greater than 1 L, the required test resolution is ≤ 0.1 L; for a water loss less than or equal to 1 L, the required resolution is ≤ 0.01 L.
- Rugged electronic unit in sturdy aluminium housing with fully protected LCD graphics display
- Optimized measuring ranges provided by advanced electronics and versatile impulse-signal technology
- Simple, problem-free operation
- Display : 128 x 64 pixel LCD graphic display, backlightable
- Power supply : 4 x 1.5 Volt alkaline Mn AAA batteries (LR6 / IRC)
- Operating time : > 50 hours with alkaline Mn batteries (without backlighting) Warning indication provided in display when batteries are low
- Operating temperature : - 20°C to + 50°C (electronic components)
- Dimensions : 150 x 58 x 34 mm
- Weight : approx. 400 g including batteries
- Backlightable display
- Zero reset at the touch of a key
- Automatic shut-off to save battery power after 15 or 30 minutes (selectable)
- High resolution and accuracy
- Immediately ready for use
- Easy operation via menu selctions
- Rugged, withstands impact