Instruction manual

34
www.cs-instruments.com
Consumption
What are the advantages of the
consumption measuring technology
of CS Instruments?
Inner diameter of pipe VA 400 Standard VA 400 Max. VA 400 HighSpeed
(92.7 m/s) (185.0 m/s) (224.0 m/s)
Inch mm Meas. ranges Meas. ranges Meas. ranges
from ... to from ... to from ... to
1/2” 16.1 DN 15 2.5...760 l/min 3.5...1516 l/min 6.0...1836 l/min
3/4” 21.7 DN 20 0.3...89 m
3
/h 0.4...178 m
3
/h 0.7...215 m
3
/h
1” 27.3 DN 25 0.5...148 m
3
/h 0.6...295 m
3
/h 1.1...357 m
3
/h
1 1/4” 36.0 DN 32 0.9...280 m
3
/h 1.2...531 m
3
/h 2.5...644 m
3
/h
1 1/2” 41.8 DN 40 1.2...365 m
3
/h 1.5...728 m
3
/h 3.0...882 m
3
/h
2” 53.1 DN 50 2...600 m
3
/h 2.5...1198 m
3
/h 4.6...1450 m
3
/h
2 1/2” 71.1 DN 65 3.5...1096 m
3
/h 5...2187 m
3
/h 7...2648 m
3
/h
3” 84.9 DN 80 5...1570 m
3
/h 7...3133 m
3
/h 12...3794 m
3
/h
4” 110.0 DN 100 9...2645 m
3
/h 12...5279 m
3
/h 16...6391 m
3
/h
5” 133.7 DN 125 13...3912 m
3
/h 18...7808 m
3
/h 24...9453 m
3
/h
6” 159.3 DN 150 18...5560 m
3
/h 25...11097 m
3
h 43...13436 m
3
/h
8” 200.0 DN 200 26...8786 m
3
/h 33...17533 m
3
/h 50...21230 m
3
/h
10” 250.0 DN 250 40...13744 m
3
h 52...27429 m
3
/h 80...33211 m
3
/h
12” 300.0 DN 300 60...19815 m
3
/h 80...39544 m
3
/h 100...47881 m
3
/h
Drilling under pressure A Screw neck B Spot drilling collar
 Even under pressure, the consumption
probe VA 400 is mounted by means of
a standard 1/2" ball valve. During
mounting and dismounting the safety
ring avoids an uncontrolled ejection of
the probe which may be caused by the
operating pressure.
For the mounting into different pipe
diameters VA 400 is available in the
following probe lengths: 120, 160, 220,
300, 400 mm.
So the consumption probes are
being mounted into existing
pipelines with inner diameters of 1/2"
upwards.
The exact positioning of the sensor in
the middle of the pipe is granted by
means of the engraved depth scale.
The maximum mounting depth
corresponds with the respective
probe length. Example: VA 400 with
probe length 220 mm has a maximum
mounting depth of 220 mm.
 If there is no suitable measuring site
with a 1/2" ball valve present there are
two simple possibilities to set up a
measuring point:
A Weld on a 1/2” screw neck and
screw on a 1/2” ball valve.
B Mount spot drilling collar incl. ball
valve (see accessories).
By means of the drilling jig it is possible
to drill under pressure through the 1/2"
ball valve into the existing pipeline.
The drilling chips are collected in a
filter. Then the probe can be mounted
as described under point A.
 Due to the large measuring range of
the probe even extreme requirements
to the consumption measurement
(high volume flow in small pipe
diameters) can be met. The measuring
range is depending on the pipe
diameter - see table on the right hand
side.
1/2” ball valve
closed
1/2”
mounting
thread
engraved
depth scale
safety ring
mounting depth
= x + y
d
A
= outer diameter
x =
y
쑿
쑼
쑼
쑿쑿
쑼
x
d
A
d
A
2
Flow measuring ranges VA 400 for compressed air (ISO 1217: 1000 mbar, 20°C)