Operating manual
VA 300
Mobile
flow and air consumption measurement
for compressed air and gases
V1.08 M
Important information
The operating instructions must be read in full and carefully observed before
starting up the device.
The manufacturer cannot be held liable for any damage which occurs as a result
of non-observance or non-compliance with this manual.
Should the device be tampered with in any manner other than a procedure which
is described and specified in the manual, the warranty is cancelled and the
manufacturer is exempt from liability.
The device is destined exclusively for the described application.
CS Instruments offers no guarantee for the suitability for any other purpose and is
not liable for errors which may have slipped into this operating manual. They are
also not liable for consequential damage resulting from the delivery, capability or
use of this device.
Area of application
The CS VA 300 product range is designed for stationary and mobile use in
compressed air pipes, air ducts or shafts.
It is used for the measurement and control of flow and air consumption in
operating air pressure and other gases.
The principle of measurement is based on the evacuation of heat from an
electrically heated sensor into the surrounding air flow.
The measuring devices operate independently of pressure and temperature.
When the sensor is fitted in a pipe, the output signal from the speed of flow is
used to calculate the standard volume at 20 °C and 1000 mbar of the medium.
2
Safety instructions
Must be read before starting up the device!
Warning:
• Do not exceed the pressure range of 50 bar.
• Installation under pressure up to 16 bar is possible without mounting device.
When the pressure is between 16 and 50 bar it is needed to use the
mounting device.
• Observe the measuring range of the sensor.
• Overheating destroys probes.
• Observe permissible storage, transport and operating temperatures.
• Improper handling or use of force when opening the device cancels all
warranty claims.
• Adjustment and calibration work must only be carried out by trained
personnel from the field of measuring and control engineering.
• Always observe the direction of flow when positioning the sensor.
• The safety ring on the sensor head must always remain undamaged and sit
correctly in the intended groove.
• The screwed fixture must be pressure tight.
• The adapter sleeve must be tightened with a torque of 20 ... 30 Nm.
• Avoid condensation on the sensor element or water drops in the measuring
air at all costs as they cause faulty measuring results.
• The values of the inlet and outlet sections must not fall below the specified
minimum values as this causes increased deviations in the measuring
results.
3
Determining the point of installation
In order to maintain the accuracy stipulated in the data sheets, the sensor must be
inserted in the centre of a straight pipe section with unhindered flow
characteristics.
Unhindered flow characteristics are achieved if the sections in front of the sensor
(inlet) and behind the sensor (outlet) are sufficiently long, absolutely straight and
lack obstructions such as edges, seams, curves etc.
Careful attention must be paid to the design of the outlet section as obstructions
can cause counter-flow turbulence as well as turbulence in the direction of the
flow.
L
L1
L2
D/2
D
L
L1
L2
D
= Length of the entire measurement section
= Length of inlet section
= Length of outlet section
= Diameter of measurement section
D/2
flow
D/2
D/2
The following table shows the equalising sections necessary in relation to existing
obstructions.
4
Table of inlet and outlet sections
Flow obstruction
before the measurement section
Slight curve
(bend < 90°)
Reduction
(Tube narrows towards measurement
section)
Expansion
(Rohr expands towards measurement
section)
90° bend
or T piece
2 x 90° bends
on one level
2 x 90° bends
3 dimensional change of direction
Shut-off valve
Min. length
inlet (L1)
Min. length
outlet (L2)
12 x D
5xD
15 x D
5xD
15 x D
5xD
15 x D
5xD
20 x D
5xD
35 x D
5xD
45 x D
5xD
The respective minimum values required are indicated here.
If it is not possible to observe the stipulated equalising sections, considerable
deviations in measuring results must be expected.
Installation position
The sensor head must sit in the centre of the pipe.
Observe the direction of flow indicated on the tip of the sensor.
5
Measurement section for VA 300 probes
LA
G 1/2"-outer screw neck
Outer thread: G x
DA
Outer thread: G x
30 mm
30 mm
Total length
Strömungsrichtung / Direction of air flow
Outer dia.
DA
Length LA
Pipe
Total length
21.3 mm
350 mm
G 1/2"
21.3 * 2.6 mm, Stahl 1.4301
500 mm
26.9 mm
430 mm
G 3/4"
26.9 * 2.6 mm, Stahl 1.4301
600 mm
33.7 mm
530 mm
G 1"
33.7 * 3.2 mm, Stahl 1.4301
750 mm
42.4 mm
660 mm
G 1 1/4"
42.4 * 3.2 mm, Stahl 1.4301
900 mm
48.3 mm
750 mm
G 1 1/2"
48.3 * 3.2 mm, Stahl 1.4301
1000 mm
60.3 mm
930 mm
G 2"
60.3 * 3.6 mm, Stahl 1.4301
1250 mm
76.1 mm
1170 mm
G 2 1/2 "
76.1 * 3.6 mm, Stahl 1.4301
1500 mm
Thread
Gx
Measurement section for VA 300 probes with flange connection
LA
G 1/2"-outer screw neck
DA
= DA
Length: L1
Weld neck flange acc. to DIN 2633
Weld neck flange acc. to DIN 2633
Total length = L1 + 2 * DIN-flange
Strömungsrichtung / Direction of air flow
Total length
= L1 + 2 * DIN flange
Outer dia.
DA
Length L1
LA
DIN - flange
Pipe
88.9 mm
1750 mm
1330 mm
DN 80 / 88.9
88.9 * 2.0 mm, Stahl 1.4301
1750 + (2*50) = 1850 mm
114.3 mm
2000 mm
1700 mm
DN 100 / 114.3
114.3 * 2.0 mm, Stahl 1.4301
2000 + (2*52) = 2104 mm
139.7 mm
2750 mm
2050 mm
DN 125 / 139.7
139.7 * 3.0 mm, Stahl 1.4301
2750 + (2*55) = 2860 mm
168.3 mm
3000 mm
2450 mm
DN 150 / 168.3
168.3 * 3.0 mm, Stahl 1.4301
3000 + ( 2*55) = 3110 mm
6
Assembly instructions
Safety information must be observed.
Assembly is carried out by inserting the connection thread (1/2“ thread, SW 27)
into the connection piece.
The sensor is then inserted to the required immersion depth and aligned
according to the direction of air flow.
A depth gauge engraved on the probe tube will assist you, along with a flow
alignment arrow and an aligning aid.
Once the sensor has been aligned, the adapter sleeve must be tightened with the
stipulated torque (SW 17).
Attention: Alignment of the sensor must not be modified when tightening the
connection thread and adapter sleeve.
If this should occur, check the immersion depth and alignment again and correct if
necessary.
The angular deviation should not be greater than +- 2° in relation to the ideal
position as otherwise the measuring accuracy will decrease.
Commissioning
The valid measuring range and delivery configuration are programmed by the
manufacturer on the basis of the user’s specifications.
The mobile flow and air consumption measuring devices from the VA 300 series
function according to the “plug and play” principle. The device is ready for
operation as soon as the power supply is connected.
Modifications to the measuring ranges can be carried out with the CS2390-5
handheld instrument.
With mobile flow and air consumption measuring devices, the user will be able to
carry out these modifications using the software and RS232 interface.
7
Flow measuring ranges
Inner diameter
Inch
mm
1/4“
1/2“
3/4“
1“
1 1/4“
1 1/2“
2“
2 1/2“
3“
4“
5“
6“
8“
6
16.1
21.7
27.3
36.0
41.9
53.1
71.1
84.9
110.3
133.7
162.3
Standard version
VA 300 - 80
Measuring range
from ... to
0.8 ... 80 l/min
2.5 ... 760 l/min
0.3 ... 90 m³/h
0.5 ... 150 m³/h
0.9 ... 280 m³/h
1.2 ... 370 m³/h
2 ... 600 m³/h
3.5 ... 1100 m³/h
5 ... 1600 m³/h
9 ... 2700 m³/h
13 ... 4000 m³/h
18 ... 5800 m³/h
On request
Drawing of VA 300 probe
8
Max. version
VA 300 - 120
Measuring range
from ... to
1.0 ... 110 l/min
3.5 ... 1100 l/min
0.4 ... 120 m³/h
0.6 ... 200 m³/h
1.2 ... 360 m³/h
1.5 ... 500 m³/h
2.5 ... 800 m³/h
5 ... 1500 m³/h
7 ... 2200 m³/h
12 ... 3600 m³/h
18 ... 5300 m³/h
25 ... 8000 m³/h
On request
Short instruction for portable applications with CS 2390-5 and VA 300
There is a special version of VA 300 probe which is used to co-operate with CS 2390-5 hand
held meter. Stationary probes VA 300 cannot be connected to this instrument.
Measurement values are always referenced to 20 °C und 1000 mbar.
The portable probes can be mounted in any compressed air tube by considering the details
from chapter XXX. They will measure the volume flow in m³/h depending on the tube diameter
setting in the hand held instrument CS 2390-5.
Start of measurement
1. Plug in the supplied mains adapter and connect it to the mains supply.
Attention:
The operation of the portable probes VA 300 (3300.0081 and 3300.0121) is only possible
by using the CS2390-5 with mains supply (2390.2290) or the optional battery pack
(0515.1002).
2. Mount probe into the compressed air pipe as described in this instruction manual.
3. Connect VA 300 probe with supplied cable to one of the left probe input of CS 2390-5
(M0, M1, M2). Left connector M0, mid M1 right M2, recommended channel is left M0.
4. Switch on instrument (sliding switch left).
5. Display will show the actual value in m³/h. IN case display shows 0 ---- the probe has been
connected to either MA or M2. Use the key M▲ to select the desired channel.
6. If the display is flashing, the inner diameter is set to DN = 0. Please enter the correct inner
diameter of the tube as described under 7.
7. Entering the inner diameter (only possible when m³/h is shown in the Display):
Default setting ex factory:
2" = 53,1 mm
Other diameters are entered as follows:
•
•
•
•
•
•
Press FUNCTION key, display shows 0: 053.1 DN.
Press PROG (►) once
053.1 First digit is flashing
Use PROG (►) to select the digit to be changed (digit flashes).
Use the keys (▼) and (▲) to enter the desired number.
Press PROG (►) until all numbers are entered and no digit is flashing anymore.
Press M▲ once. Now the instrument is ready to measure based on the newly entered
diameter. The diameter remains set even when the instrument is powered off.
9
Further menu points:
1. Switch from volume flow to velocity
By pressing the key M▲ the display will change from m³/h to m/sec which is the velocity at the
point of measurement.
2. Check memory status, screen displays SF 31,1:
Press FUNCTION key, screen displays 31,1 SF, up to 3600 individual measured values are
possible.
Delete memory for new measurement with PROG (►) key. SCLR SF flashes on the screen
Delete memory by pressing M▲ CLEAR, and press M▲ CLEAR again to return to
measurement menu
3. Alter ZY storage cycle:
Press FUNCTION key, the factory setting is a cycle of 00:00:05 ZY, which means that a
measured value is stored every 5 seconds. Alterations are made using PROG (►) and (▲)(▼)
number keys. Store with PROG (►) key until no figures are flashing. Return to measurement
with M▲ key.
4. Storing measured values
Store measured values via Start key. (▲)(▲) appears in the display
Storage is stopped via Stop key.
Additional considerations:
Do not change the connected probes as long you have recorded data stored inside the
instrument. The instrument cannot distinguish between different probes and will always assume
to have the same probes connected as at the start of the first record. Whenever probes have to
be changed we recommend to transfer the recorded data to the PC via CS-Soft and then clear
the internal memory.
5. Read out recorded data, analyze them with CSSoft Software
Connect RS-232 cable to the right hand connector (black A1)of CS2390 and connect the other
end to the COM port of your PC. Start CS-Soft by clicking the icon on the desktop. Please find
further instructions in the tutorial of CS-Soft.
If the CS 2390 is connected with a PC it is not possible to change the diameter or other
settings.
10
Measuring ranges in relation to inner pipe diameter
This table is used when the standard VA 300-80 probe is to be used in different pipes.
Inner pipe
diameter
Inch
mm
1/4"
1/2"
3/4"
1"
1 1/4"
1 1/2"
2"
6.0
10.0
15.0
16.1
21.7
25.0
26.0
27.3
28.5
30.0
32.8
36.0
36.3
39.3
40.0
41.9
43.1
45.8
50.0
51.2
53.1
54.5
57.5
60.0
64.2
Volume flow
(final value of meas. range)
m³/h
m³/min
l/min
l/s
max.
m/s
4.7
0.08
78.7
1.31
92.7
15.1
0.25
251.1
4.19
92.7
38.9
0.65
648.6
10.81
92.7
45.6
0.76
760.8
12.68
92.7
89.1
1.48
1484.9
24.75
92.7
122.2
2.04
2036.3
33.94
92.7
132.9
2.21
2214.3
36.90
92.7
147.5
2.46
2457.5
40.96
92.7
162.0
2.70
2699.6
44.99
92.7
180.9
3.01
3014.8
50.25
92.7
218.8
3.65
3646.2
60.77
92.7
266.3
4.44
4437.6
73.96
92.7
270.7
4.51
4511.9
75.20
92.7
320.1
5.34
5335.7
88.93
92.7
332.5
5.54
5541.4
92.36
92.7
366.7
6.11
6111.0
101.8
92.7
389.4
6.49
6490.4
108.1
92.7
441.9
7.37
7365.7
122.7
92.7
530.6
8.84
8844.1
147.4
92.7
557.1
9.29
9285.1
154.7
92.7
600.0
10.00
10000
166.6
92.7
632.8
10.55
10546
175.7
92.7
707.8
11.80
11797
196.6
92.7
773.6
12.89
12892
214.8
92.7
888.9
14.81
14814
246.9
92.7
11
Measuring ranges in relation to inner pipe diameter
This table is used when the standard VA 300-80 probe is to be used in different pipes.
Inner pipe
diameter
Volume flow
(final value of meas. range)
max.
Inch
mm
m³/h
m³/min
l/min
l/s
m/s
2 1/2"
65.0
70.3
71.1
76.1
80.0
81.0
82.5
84.9
90.0
100.0
107.1
110.0
125.0
133.7
150.0
159.3
182.5
190.0
200.0
206.5
250.0
260.4
300.0
309.7
339.6
388.8
500.0
600.0
700.0
800.0
900.0
1000.0
913.5
15.22
15224
253.7
92.7
1071.1
17.85
17851
297.5
92.7
1095.6
18.26
18260
304.3
92.7
1258.2
20.97
20969
349.4
92.7
1390.4
23.17
23173
386.2
92.7
1425.4
23.76
23756
395.9
92.7
1480.5
24.67
24674
411.2
92.7
1569.8
26.16
26162
436.0
92.7
1766.1
29.44
29435
490.6
92.7
2183.1
36.38
36384
606.4
92.7
2507.1
41.78
41784
696.4
92.7
2644.7
44.08
44077
734.6
92.7
3423.3
57.1
57055
950.9
92.7
3921.1
65.4
65351
1089.2
92.7
4941.4
82.4
82356
1372.6
92.7
5579.8
93.0
92996
1549.9
92.7
7323.4
122.1
122055
2034.3
92.7
7947.1
132.5
132451
2207.5
92.7
8816.2
146.9
146936
2448.9
92.7
9398.5
156.6
156642
2610.7
92.7
13775
229.6
229587
3826.5
92.7
14945
249.1
249086
4151.4
92.7
19836
330.6
330606
5510.1
92.7
21139
352.3
352331
5872.2
92.7
25418
423.6
423646
7060.8
92.7
33317
555.3
555291
9254.9
92.7
55101
918.4
918350
15305
92.7
79345
1322
1322424
22040
92.7
107998
1800
1799966
29999
92.7
141058
2351
2350976
39182
92.7
178527
2975
2975455
49590
92.7
220404
3673
3673401
61223
92.7
3"
4"
5"
6"
8"
10"
12"
12
Measuring ranges in relation to inner pipe diameter
This table is used when the VA 300-120 probe (maximun version) is to be used in different
pipes.
Inner pipe
diameter
Inch
mm
Volume flow
(final value of meas. range)
m³/h
m³/min
l/min
l/s
max.
m/s
6,0
6,3
0,10
105,0
1,75
123,7
10,0
20,1
0,33
334,8
5,59
123,7
15,0
51,9
0,86
864,8
14,4
123,7
1/2"
16,1
60,8
1,01
1012
16,9
123,7
3/4"
21,7
118,8
1,98
1980
33,0
123,7
1"
25,0
162,9
2,72
2715
45,3
123,7
26,0
177,2
2,95
2952
49,2
123,7
27,3
196,6
3,28
3277
54,6
123,7
28,5
215,9
3,60
3407
60,0
123,7
30,0
241,2
4,02
4020
67,0
123,7
32,8
291,7
4,86
4862
81,0
123,7
36,0
355,0
5,92
5917
98,6
123,7
36,3
359,6
5,94
5925
99,0
123,7
39,3
426,9
7,11
7114
118,6
123,7
40,0
443,3
7,39
7389
123,1
123,7
41,8
486,5
8,11
8109
135,2
123,7
43,1
519,2
8,65
8654
144,2
123,7
45,8
588,5
9,81
9809
163,6
123,7
50,0
706,6
11,78
11778
196,3
123,7
51,2
742,8
12,38
12380
206,3
123,7
53,1
800,0
13,33
13333
222,2
123,7
54,5
844,9
14,08
14081
234,6
123,7
57,5
945,1
15,75
15751
262,5
123,7
60,0
1032,8
17,21
17213
286,8
123,7
64,2
1186,8
19,78
19779
329,6
123,7
1/4"
1 1/4"
1 1/2"
2"
13
Measuring ranges in relation to inner pipe diameter
This table is used when the VA 300-120 (maximun version) probe is to be used in different
pipes.
Meßrohr
Innendurchmesser
Zoll
mm
2 1/2"
3"
4"
5"
6"
8"
12"
m³/h
Volumenstrom
(Meßbereichsendwert)
m³/min
l/min
l/s
max.
m/s
65,0
1218,0
20,30
20300,4
338,34
123,7
70,3
1428,2
23,80
23803,6
396,73
123,7
71,1
1460,9
24,35
24348,4
405,81
123,7
76,1
1677,7
27,96
27960,9
466,01
123,7
80,0
1854,0
30,90
30900,2
515,00
123,7
81,0
1900,7
31,68
31677,6
527,96
123,7
82,5
1974,1
32,90
32901,3
548,36
123,7
84,9
2093,1
34,89
34885,5
581,42
123,7
90,0
2355,0
39,25
39249,8
654,16
123,7
100,0
2910,9
48,51
48514,8
808,58
123,7
107,1
3342,9
55,72
55715,4
928,59
123,7
125,0
4564,7
76,1
76077,8
1268,0
123,7
133,7
5228,4
87,1
87140,6
1452,3
123,7
150,0
6588,9
109,8
109814,4
1830,2
123,7
159,3
7440,1
124,0
124001,5
2066,7
123,7
182,5
9765,0
162,8
162750,0
2712,5
123,7
190,0
10584,1
176,4
176401,6
2940,0
123,7
200,0
11727,5
195,5
195458,8
3257,6
123,7
206,0
12441,7
207,4
207362,3
3456,0
123,7
206,5
12502,2
208,4
208370,1
3472,8
123,7
260,4
19928,0
332,1
332133,4
5535,6
123,7
300,0
26449,9
440,8
440831,9
7347,2
123,7
309,7
28188,0
469,8
469799,9
7830,0
123,7
339,6
33893,6
564,9
564892,6
9414,9
123,7
388,8
44425,7
740,4
740428,4
12340,5
123,7
500,0
73472,0
1224,5
1224533,1
20408,9
123,7
600,0
105799,7 1763,3
1763327,7
29388,8
123,7
700,0
144005,1 2400,1
2400084,9
40001,4
123,7
800,0
188088,3 3134,8
3134804,8
52246,7
123,7
900,0
238049,2 3967,5
3967487,3
66124,8
123,7
1000,0
293888,0 4898,1
4898132,5
81635,5
123,7
14
Technical data
Measurands:
m³/h
m/s
(The underlying standard is valid:
DIN 1945. ISO 1217 at 20°C and 1000 mbar)
measuring range:
see table
Principle of measurement:
calorimetric measurement
Sensor:
2 x PT100
Measuring medium:
Air, gas
Operating temperature:
-30 to 140°C probe tube
-30 to 80 °C housing
Operating pressure:
up to 50 bar
Analogue output:
4 to 20 mA for m³/h
Pulse output:
1 pulse per m³
(High signal 24 VDC 2ms)
Power supply:
230 VDC. 50 to 60 Hz
(stationary with flow processor )
Power supply:
24 VDC smoothed ± 15%
(mobile, probe only)
Accuracy:
With measurement section
± 3% of m.v.
± 2% of m.v. (option via 5 point ISO precision calibration)
This data is only valid in relation to the measurement section
Accuracy:
Without measurement section
± 4 % of m.v.
± 3 % of m.v. (option via 5 point ISO precision calibration)
This data is only valid when the correct inner diameter
is entered.
Display:
Flow in m³/h
Velocity in m/s
Selectable units:
m³/h (standard factory setting)
m³/min. l/min. l/s. ft/min. cfm
15
Service information
Maintenance
The sensor head should be checked regularly for dirt and cleaned if necessary.
Should dirt, dust or oil build up on the sensor element, a deviation will occur in the
measured value.
A yearly check is recommended. Should the compressed air be heavily soiled, this
interval must be shortened.
Cleaning the sensor head
The sensor head can be cleaned by carefully moving it to and fro in warm water
with a small amount of washing up liquid. Avoid physical intervention on the
sensor (e.g. using a sponge or brush).
If soiling cannot be removed, service and maintenance must be carried out by the
manufacturer.
Re: calibration
If no customer specifications are given, then we recommend that calibration is
carried out every 12 months. The sensor must be sent to the manufacturer for this
purpose.
Spare parts and repair
Spare parts are not available for reasons of measuring accuracy.
If parts are faulty, they must be sent to the supplier for repair.
If the measuring device is used in important company installations, we
recommend that you keep a spare measuring system ready.
Calibration certificates
Calibration certificates are issued by the manufacturer on request. This is a feepaying service. Precision is tested with PTB (German National Metrology Institute)
volume flow nozzles.
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EC Declaration of Conformity
for
DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL
of 27. January 2003
on waste electrical and electronic equipment (WEEE)
and
DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL
of 27. January 2003
on the restriction of the use of certain hazardous substances in electrical and electronic
equipment (RoHS)
of the down mentioned instruments from CS Instruments GmbH:
Pressure dew point meter:
FA 300 and accessories
Flow- and consumption meter:
VA 300 and accessories
CS Messtechnik GmbH as the manufacturer herewith declares that the above
instruments and accessories belongs to the category 9 (WEEE 2002/96/EC).
Therefore the above instruments do not fall upward aforementioned directive
RoHS 2002/95/EC and are not affected by the material restriction.
In accordance with directive WEEE 2002/96/EC the measuring instruments
specified above are taken back from CS Instruments GmbH to the disposal.
CS Instruments GmbH
Am Oxer 28c
D-24955 Harrislee
Tel.
0461 / 700 2025
Fax
0461 / 700 2026
Harrislee, 16.January 2007
__________________________________________
Christian Schuldt, Managing Director
This declaration does not guarantee any product characteristics.
Please do also adhere to the safety instructions stated in the enclosed documentation.
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Contact
• Advice
• Sales
• Customer-service
• Seminars
SOUTHERN Sales Office
Zindelsteiner Str. 15
D-78052 VS-Tannheim
Tel. +49 (0) 978 99-0
Fax +49 (0) 7705 978 99-20
info@cs-instruments.com
www.cs-instruments.com
NORTHERN Sales Office
Am Oxer 28c
D-24955 Harrislee
Tel. +49 (0) 461 – 700 2025
Fax +49 (0) 461 – 700 2026
info@cs-instruments.com
www.cs-instruments.com
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