semi-dry multi-jet meters, the solution for critical water quality - Wehrle

WATER METERS
Semi-Dry
• For cold water
• Nominal flow Qn 1.5 - 15 m³/h
• Can be inserted horizontally or vertically
• Optionally, for later equipping with contact maker

SEMI-DRY MULTI-JET METERS, THE SOLUTION FOR CRITICAL WATER
QUALITY
Exploded view of a semi-dry multi-jet meter (measuring insert)
➀ Totalizer
➁ Register box
➂ Impeller wheel
➃ Impeller chamber
➀
➁
➂
➃
Semi-dry multi-jet meters from WEHRLE convince through
their efficiency, absolutely dependable processing quality
and reliability.
The roller set is watertight encapsulated and cannot be polluted.
The filling contains glycerine and thus guarantees
protection against fluctuations in pressure.
The housing is corrosion-resistant and is according to current
standards. As required, the housing can be supplied
with either electrostatic powder coating or untreated.
Semi-dry multi-jet meters have a precise adjustment control.
They also measure strongly polluted water reliably.
The maximum pressure load is 16 MPa.
Dial faces, stick-on labels and protective covers can be
individually printed as the customer desires.
The meters can be supplied for horizontal, ascending and
downflow piping. Semi-dry multi-jets for horizontal piping
can also be equipped with flange connections for Qn 15
meters.
Semi-dry multi-jet meters fulfill all demands of PTB (German
Federal Physical-Technical Office) as well as EU guidelines.
Numerous international approvals have been issued.
The semi-dry multi-jet meters are extremely well prepared
for modern meter communication as contact meter with
retrofittable reed contact. Integration into a remote reading
system is not only simple, but can also be done at any later
date.
Naturally our inserts are also separately available.

VARIATIONS
Semi-dry multi-jet meters MSK-HWV and MSK-SWV
Semi-dry multi-jet meter MSK-HWN with reed contact for retrofitting
Measuring inserts MSK-OWV for semi-dry multi-jet meters
SEMI-DRY MULTI-JET METERS
• Metrological class A (R40), B (R80) or C (R 160)
• 5-digit totalizer
• The use of top-quality materials guarantees long service
life
• Housing in brass, natural or coated
SEMI-DRY CONTACT METER
The contact meter is suitable in the best possible manner
for electronic data collection. The contact exit can be connected
to different measuring data systems.
• Standard pulse valency 10 litres/pulse
• Standard cable length 2 m
• Other pulse valencies and cable lengths on request.
• Direct switching voltage up to 200 V
• Switching current 500mA, switching time 0.5 ms
• Transition resistance 150 mOhm
• Capacity 0.2 pF
SEMI-DRY MEASURING INSERT
• Metrological classes A (R40), B (R80) or C (R160)
• 5-digit totalizer
• The use of top-quality materials guarantees long service
life

TECHNICAL DATA
PRODUCT DESCRIPTION
MSK -... = Semi-dry multi-jet meter cold water
...-.W. = WVG housing
...-H.V = Multi-jet standard meter
...-H.N = Multi-jet meter for retrofitting
...-S.. = Meter for ascending piping
...-F.. = Meter for downflow piping
...-O.. = Measuring insert
Overall length L
[mm]
Pressure loss
1,0 bar
0,1 bar
165 190 260 260 260 270 300 105
0,01 bar
0,1xQ’ 0,2xQ’ 0,3xQ’ 0,5xQ’
Flow -6,00
Pressure loss curve Typical error curve
Q’
Error [%] .
6,00
4,00
2,00
0,00
-2,00
-4,00
Ascending
piping
Dimensioned drawing of meter
Flow [l/h]
100 1000 10000
E. WEHRLE GMBH | Obertalstraße 8 | D-78120 Furtwangen | info@wehrle.de | www.wehrle.de
105
Ascending
piping
150
Ascending
piping
150
Ascending
piping
150
Ascending
piping
Nominal flow Q3 2,5 4 6,3 10 10 25 16 2,5 4 6,3 10 16 4
Nominal flow Qn 1,5 2,5 3,5 6 6 15 10 1,5 2,5 3,5 6 10 2,5
Nominal width [mm] 15 20 25 25 32 50 40 20 20 25 25 40 20
Start about [l/h] < 10 < 13 < 23 < 23 < 45 < 45 < 45 < 15 < 15 < 18 < 18 < 38 < 38
Flow Q' at 1 bar
pressure loss[ l/h]
105
Downflow
piping
4500 5600 12500 12500 12500 31000 24000 5500 5500 12500 12500 26000 5500
Connecting thread 3/4" 1" 1 1/4" 1 1/4” 1 1/2” 2 1/2” / F50 3/4" 1" 1" 1 1/4” 1 1/4” 2” 1”
Height H about [mm] 104 108 120 120 120 155 / 162 143 150 150 170 170 215 150
Weight about [Kg] 1,4 1,6 2,4 2,4 2,4 6,9 / 9,6 4,8 1,8 1,8 2,9 2,9 5,4 2,1
Achievable metrolo-
C-H B-V
C-H
C-H B-V
B-H C-H C-H
gical class MSK
Order numbers
R160H R80V
R160H
R160H R80V
R80H R 160 H R160H
MSK-.WV B 98-0331 98-0332 96-0333 96-0333 98-0333 98-0377 98-0334
MSK-.WN B 98-0728 98-0729 98-0730 98-0730 98-0730
MSK-OWV 96-0260 96-0260 96-0167 96-0171 96-0171 96-0262 96-0262 96-0260 96-0260 96-0167 96-0171 96-0262 96-0260
MSK-OWN 96-0264 96-0263 96-0265 96-0265 96-0265 96-0265 96-0265 96-0264 96-0263 96-0265 96-0265 96-0265 96-0263
*Additional overall lengths and metrological classes on request Technical data and order numbers of the Semi-dry multi-jet meters
Data sheet Semi-dry multi-jet meter as at 2008-10-20/MDA