CS Instruments VA 400 User manual

V5-02-2010
INSTRUCTION MANUAL
Stationary and mobile
flow and consumption measurement
for compressed air and gases
VA 400
VA 400
consumption sensor
consumption sensor
Optionen:
VA 400 with display*
VA 400 - Max.
VA 400 - HighSpeed
* Operation menu for the display with capacitive key buttons

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FUNCTIONS
Page
Important information before initiation 3
Safety instructions 4-5
Technical data 6
Instruments description 7
Installation description 7-8
Assembly instructions 9
Measuring ranges VA 400 - Standard 10-11
Measuring ranges VA 400 - Max. 12-13
Measuring ranges VA 400 - HighSpeed 14-15
Max. velocities of the different gases 16
Drawing/Dimensions of the instrument / Pulse output 17
Pulse output signals / pulse lengths 18
Connection of the instrument 19
Service information 20
Display functions 21-24
Calibration/adjustment 25
Warranty 25
Ordering data 25
Accessories: Measuring sections 26
EC conformity declaration 27-28
Contact 32
INTRODUCTION
Dear customer,
thousands of customers buy our high standard products every year. There are a few good
reasons for doing so:
• The cost-performance ratio - reliable quality at a fair price.
• We have the ideal solutions for your measuring tasks based on our expert
experience gained over 20 years.
• Our high quality standard.
• Of course, our instruments carry the CE symbol required by the EU.
• We issue calibration certificates and hold seminars.
• We offer a good after sales service.
Our service guarantees fast help.
Measuring instrument conforms with DIN EN 61326-1 and EN 61010-1

3 V5-02-2010
IMPORTANT INFORMATION BEFORE INITIATION
Please read carefully before starting the device!
The consumption sensor VA 400 measures the flow velocity (calorimatric principle) in the
middle of the pipe. Please observe mounting instruction and inlet section = 15 x inner
diameter and outlet section = 5 x inner diameter.
The final values of the measuring ranges are as follows:
VA 400 standard version 92.7 m/s, please take the flow rates from the tables on pages 10-11
VA 400 max. version 185 m/s, please take the flow rates from the tables on pages 12-13
VA 400 high speed version 224 m/s, please take the flow rates from the tables on pages 14-15
1. VA 400 with display with 4… 20 mA analogue and pulse output
Please enter inner diameter of the pipe!
Values indicated in the display:
Actual value in m³/h, m³/min etc.
Counter in m³ resp. l
as well as pulse output, 1 pulse per m³ resp. l
are calculated according to the set diameter. Please take the analogue value for flow rate
4… 20 mA from the tables on pages 10 to 15.
4 mA always corresponds with the starting value 0 m³/h, 0 m³/min. The final value 20 mA can
be taken from the tables on pages 10 to 15.
Example VA 400 Standard:
1" with inner diameter 25.0 mm, 4 mA = 0 m³/h and 20 mA = 122.2 m³/h
2" with inner diameter 53.1 mm, 4 mA = 0 m³/h und 20 mA = 600.0 m³/h
2. VA 400 without Display with 4… 20 mA analogue output (without pulse output)
No adjustments are necessary at the consumption sensor.
The respective final values for the flow rate can be taken from the tables on the pages
10 to 15. 4 mA is always set as scaling value 0. 20 mA is the final value .
Example VA 400 Standard:
1" with inner diameter 25.0 mm, 4 mA = 0 m³/h and 20 mA = 122.2 m³/h
2" with inner diameter 53.1 mm, 4 mA = 0 m³/h und 20 mA = 600.0 m³/h
!

4 V5-02-2010
Please read carefully before starting the device!
Warning:
Do not exceed the pressure range of 50. From 10 bar we recommend to use the high-
pressure protection for a safe installation and removal.
Observe the measuring ranges of the sensor!
Overheating destroys the sensor.
Observe the admissible storage and transporation temperature as well as the permitted
operating temperature (e. g. protect the instrument from direct insolation).
Always observe the direction of flow when positioning the sensor!
The safety ring at the sensor head must always remain undamaged and sit correctly in
the destined slot.
The screwed fixture must be pressure tight.
The adapter sleeve must be tightened with a torque of 20 to 30 Nm.
It is absolutely necessary to avoid condensation on the sensor element or water drops
in the measuring air as they may cause faulty .
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.
The manufacturer cannot be held liable for any damage which occurs as a result of non-
observance or non-compliance with these instructions. Should the device be tampered
with in any matter other than a procedure which is described and specified in the manu-
al, the warranty is cancelled and the manufacturer is exempt from liability.
The device is destined exclusively for the described application.
CS Instruments GmbH offers no guarantee for the suitability for any other purpose and
is not liable for errors which may have slipped into this operation manual. CS Instru-
ments GmbH is also not liable for consequential damage resulting from the delivery, ca-
pability or use of this device.
We offer you to take back the instruments of the instruments family VA 400 which you
would like to dispose of.
Adjustments and calibrations should only be carried out by qualified employees from the
measurement and control technology branch.
SAFETY INSTRUCTIONS
!

5 V5-02-2010
SAFETY INSTRUCTIONS
Please read carefully before starting the device!
The consumption sensor VA 400 works according to the calorimetric measuring principle.
Burnable gases
If this consumption sensor is used for measurement of burnable gases (e. g. natural gas)
we explicitly point out that the sensor has no DVGW (= German Technical Association
for Gas and Water) admission, however, it can be used for natural gas. A DVGW
admission is not mandatory.
The consumption sensor VA 400 corresponds with the latest state of technology and can
generally be used for burnable and non-burnable gases.
For the use in e. g. natural gas the sensor will be calibrated in natural gas. The calibrati-
on protocol (inspection certificate) is included in the scope of delivery.
The area outside the pipe (environment of the sensor) is not allowed to be an explosive
area.
The installation has to be done by authorized expert staff.
!

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TECHNICAL DATA
Measured variables: Volume flow (mass flow), total consumption, velocity
Reference: DIN 1945, ISO 1217 at 20°C and 1000 mbar)
(Standard factory setting) - other standards can be adjustec ex
factory or by means of the CS Service Software
Principle of measurement: calorimetric measurement
Sensor: Pt45, Pt1000
Measuring medium: Air (Standard factory setting)
Nitrogen, argon, CO2, oxygen, nitrous oxide, natural gas
Operating temperature: -30 ... 110°C probe tube
-30 ... 80 °C housing
Operating pressure: up to 50 bar
Analogue output: 4 ... 20 mA (max. burden < 500 Ohm)
Scaling: 0 to maximum flow rate (see tables on pages 10-15)
Accuracy: 0.06 mA
Pulse output: see pages 18 to 19
Power supply: 12 to 30 VDC
Power input: max. 80 mA at 24 VDC
Accuracy: ±3% m.v.
with meas. section ± 2% m.v. (option via 5 point ISO precision calibration)
These data are just valid in connection with a measuring
section.
Accuracy: ± 4% m.v.
without meas. section ± 3% m.v. (option via 5 point ISO precision calibration)
These data are just valid in case of correctly programmed
inner diameter
Display: 128 x 64 pixel, with backlight
Measured values in maximum 6 digits,
Counter max. up to 1,999,999,999, l resp. m³
drops then back to 0
Units: Standard factory settings m³/h , m³
selectable via software
or pushbuttons at the
display: m³/h, m³/min, l/min, l/s, kg/s, kg/min, kg/h, cfm, m/s
Screw-in thread: G 1/2"
Material: Probe tube and screwing: stainless steel 1.4301

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INSTRUMENTS DESCRIPTION
VA 400 is a consumption sensor for consumption measurement of compressed air and
gases. The version with integrated display indicates the actual consumption e. g. in m³/h
and m³.
Special features:
- Option integrated display
- units freely selectable in the display
- consumption counter resettable
- inner pipe diameter adjustable
- Depth scale for accurate installation
- Usable from tube diameter 1/2" (DN 15)
- Easy installation under pressure
- 4...20 mA analogue output for m³/h resp. m³/min
- Pulse output for m³
Programming via Service Software SFA 300.
- Analogue output 4...20 mA scalable
- Switching between m³/h, m³/min, ft/min, l/min, l/s, cfm, m/s
- Reading out the service data
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 an undisturbed flow progression.
An undisturbed flow progression is achieved if the sections in front of the sensor (inlet) and
behind the sensor (outlet) are sufficiently long, absolutely straight and without any obstruc-
tions 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 = Length of the entire measuring section
L1 = Length of inlet section
L2 = Length of outlet section
D = Diameter of measuring section
INSTALLATION DESCRIPTON
L
L 1 L 2
D
flow
D/2 D/2
D/2 D/2

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The following table shows the equalising sections necessary in relation to existing ob-
structions:
INSTALLATION DESCRIPTION
Flow obstruction in front of
the measuring section Minimum length inlet (L1) Minimum length outlet (L2)
Slight curve
(bend < 90°) 12 x D 5 x D
Reduction
(pipe narrows towards the meas. section) 15 x D 5 x D
Expansion
(pipe expands towards the meas. section) 15 x D 5 x D
90° bend
or T piece 15 x D 5 x D
2 bends á 90°
on one level 20 x D 5 x D
2 bends á 90°
3-dimensional change of direction 35 x D 5 x D
Shut-off valve 45 x D 5 x D
Table of inlet and outlet sections
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.
Sensor installation
Hint for the installation with ball valve:
Ball valve R 1/2“, DN 15
Passage ball valve minimum Ø15 mm
Consider the flow direction which should match with the
arrows at the connector head.
Measure from here to the tube center Read the insertion position here
The sensor head must be placed in the centre of the pipe. Therefore the probe shaft has a
scale. To determine the right position measure the length from the marked position to the
centre of the tube. The probe then will be inserted up to this measure and then tightened up.
mm

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ASSEMBLY INSTRUCTIONS
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 scale engraved on the probe tube, a flow
alignment arrow and an aligning device will be of help to you. 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. In this case please check the immersion depth and alignment
again and correct if necessary. The angular deviation should not be greater than ± 2° in re-
lation 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 stationary flow and air consumption measuring devices from the VA 400/ DS 300 se-
ries function according to the “plug and play” principle. The device is ready for operation as
soon as the power supply is connected. .

10 V5-02-2010
Measuring ranges depending on the inner diameter of the pipe
The sensor VA 400 - standard version with or without display, has a maximum
measuring range of 92.7 m/sec. The flow rate is programmed to: Inner diameter: 53.1 mm
This corresponds with an analogue output 4… 20 mA of
0…600 m³/h 0…10 m³/min 0…10000 l/min 0…166.6 l/sec 0…92.7 m/sec.
In case of the version with display the inner diameter 25.00 has to be set first if the sensor is
used in other pipes, e. g. 1", 25 mm.
The analogue output for 1" can be taken from the table below: 4… 20 mA =
0…122.2 m³/h 0...2.04 m³/min 0…2036.6 l/min 0…33.94 l/sec 0…92.7 m/sec.
In case of the version with display please adjust the respective inner diameter (see page 21).
Inner diameter
of the pipe Flow
(final value of measuring range) max.
Inch mm m³/h m³/min l/min l/s m/s
1/4" 6.0 4.7 0.08 78.7 1.31 92.7
10.0 15.1 0.25 251.1 4.19 92.7
15.0 38.9 0.65 648.6 10.81 92.7
1/2" 16.1 45.6 0.76 760.8 12.68 92.7
3/4" 21.7 89.1 1.48 1484.9 24.75 92.7
1" 25.0 122.2 2.04 2036.3 33.94 92.7
26.0 132.9 2.21 2214.3 36.90 92.7
27.3 147.5 2.46 2457.5 40.96 92.7
28.5 162.0 2.70 2699.6 44.99 92.7
30.0 180.9 3.01 3014.8 50.25 92.7
1 1/4" 32.8 218.8 3.65 3646.2 60.77 92.7
36.0 266.3 4.44 4437.6 73.96 92.7
36.3 270.7 4.51 4511.9 75.20 92.7
1 1/2" 39.3 320.1 5.34 5335.7 88.93 92.7
40.0 332.5 5.54 5541.4 92.36 92.7
41.9 366.7 6.11 6111.0 101.8 92.7
43.1 389.4 6.49 6490.4 108.1 92.7
45.8 441.9 7.37 7365.7 122.7 92.7
2" 50.0 530.6 8.84 8844.1 147.4 92.7
51.2 557.1 9.29 9285.1 154.7 92.7
53.1 600.0 10.00 10000 166.6 92.7
54.5 632.8 10.55 10546 175.7 92.7
57.5 707.8 11.80 11797 196.6 92.7
60.0 773.6 12.89 12892 214.8 92.7
64.2 888.9 14.81 14814 246.9 92.7
MEASURING RANGES STANDARD
Referred to DIN 1945/ISO 1217 (20 °C, 1000 mbar) and compressed air

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Measuring ranges depending from the inner diameter of the pipe
MEASURING RANGES STANDARD
Sonde VA 400 - standard version up to 92.7 m/sec.
Inner diameter
of the pipe Flow
(final value of measuring range) max.
Inch mm m³/h m³/min l/min l/s m/s
2 1/2" 65.0 913.5 15.22 15224 253.7 92.7
70.3 1071.1 17.85 17851 297.5 92.7
71.1 1095.6 18.26 18260 304.3 92.7
76.1 1258.2 20.97 20969 349.4 92.7
3" 80.0 1390.4 23.17 23173 386.2 92.7
81.0 1425.4 23.76 23756 395.9 92.7
82.5 1480.5 24.67 24674 411.2 92.7
84.9 1569.8 26.16 26162 436.0 92.7
90.0 1766.1 29.44 29435 490.6 92.7
4" 100.0 2183.1 36.38 36384 606.4 92.7
107.1 2507.1 41.78 41784 696.4 92.7
110.0 2644.7 44.08 44077 734.6 92.7
5" 125.0 3423.3 57.1 57055 950.9 92.7
133.7 3921.1 65.4 65351 1089.2 92.7
6" 150.0 4941.4 82.4 82356 1372.6 92.7
159.3 5579.8 93.0 92996 1549.9 92.7
182.5 7323.4 122.1 122055 2034.3 92.7
190.0 7947.1 132.5 132451 2207.5 92.7
8" 200.0 8816.2 146.9 146936 2448.9 92.7
206.5 9398.5 156.6 156642 2610.7 92.7
10" 250.0 13775 229.6 229587 3826.5 92.7
260.4 14945 249.1 249086 4151.4 92.7
12" 300.0 19836 330.6 330606 5510.1 92.7
309.7 21139 352.3 352331 5872.2 92.7
339.6 25418 423.6 423646 7060.8 92.7
388.8 33317 555.3 555291 9254.9 92.7
500.0 55101 918.4 918350 15305 92.7
600.0 79345 1322 1322424 22040 92.7
700.0 107998 1800 1799966 29999 92.7
800.0 141058 2351 2350976 39182 92.7
900.0 178527 2975 2975455 49590 92.7
1000.0 220404 3673 3673401 61223 92.7
Referred to DIN 1945/ISO 1217 (20 °C, 1000 mbar) and compressed air

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Measuring ranges depending from the inner diameter of the pipe
MEASURING RANGES MAX
The sensor VA 400 - max. version with or without display, has a maximum measuring range of
185.0 m/sec. The flow rate is programmed to:
Inner diameter: 53.1 mm
This corresponds with an analogue output 4… 20 mA of
0…1197.59 m³/h 0…19.96 m³/min 0…19959.88 l/min 0…332.66 l/sec 0…185.0 m/sec.
In case of the version with display the inner diameter 25.00 has to be set first if the sensor is used
in other pipes, e. g. 1", 25 mm.
The analogue output for 1" can be taken from the table below: 4… 20 mA =
0…243.88 m³/h 0... 4.06 m³/min 0…4064.73 l/min 0…67.75 l/sec 0…185.0 m/sec.
In case of the version with display please adjust the respective inner diameter (see page 21).
Inner diameter
of the pipe Flow
(final value of measuring range) max.
Inch mm m³/h m³/min l/min l/s m/s
1/4" 6.0 9.42 0.16 156.92 2.62 185.0
10.0 30.08 0.50 501.28 8.35 185.0
15.0 77.68 1.29 1294.61 21.58 185.0
1/2" 16.1 90.98 1.52 1516.31 25.27 185.0
3/4" 21.7 177.84 2.96 2963.94 49.40 185.0
1" 25.0 243.88 4.06 4064.73 67.75 185.0
26.0 265.20 4.42 4419.99 73.67 185.0
27.3 294.72 4.91 4912.02 81.87 185.0
28.5 323.32 5.39 5388.74 89.81 185.0
30.0 361.08 6.02 6017.98 100.30 185.0
1 1/4" 32.8 436.69 7.28 7278.17 121.30 185.0
36.0 531.48 8.86 8857.96 147.63 185.0
36.3 541.06 9.02 9017.70 150.29 185.0
1 1/2" 39.3 639.84 10.66 10664.07 177.73 185.0
40.0 663.68 11.06 11061.30 184.35 185.0
41.8 728.41 12.14 12140.14 202.34 185.0
43.1 777.34 12.96 12955.60 215.93 185.0
45.8 882.17 14.70 14702.79 245.05 185.0
2" 50.0 1059.23 17.65 17653.79 294.23 185.0
51.2 1112.05 18.53 18534.19 308.90 185.0
53.1 1197.59 19.96 19959.88 332.66 185.0
54.5 1263.13 21.05 21052.15 350.87 185.0
57.5 1414.66 23.58 23577.72 392.96 185.0
60.0 1544.12 25.74 25735.30 428.92 185.0
64.2 1774.33 29.57 29572.14 492.87 185.0
Referred to DIN 1945/ISO 1217 (20 °C, 1000 mbar) and compressed air

13 V5-02-2010
Measuring ranges depending from the inner diameter of the pipe
MEASURING RANGES MAX
Sensor VA 400 - max. version up to 185.0 m/sec.
Inner diameter
of the pipe Flow (final value of measuring range) max.
Inch mm m³/h m³/min l/min l/s m/s
2 1/2" 65.0 1821.03 30.35 30350.57 505.84 185.0
70.3 2137.86 35.63 35631.08 593.85 185.0
71.1 2186.80 36.45 36446.65 607.44 185.0
76.1 2511.24 41.85 41853.97 697.57 185.0
3" 80.0 2778.58 46.31 46309.59 771.83 185.0
82.5 2958.51 49.31 49308.50 821.81 185.0
84.9 3133.15 52.22 52219.09 870.32 185.0
90.0 3525.11 58.75 58751.80 979.20 185.0
4" 100.0 4357.22 72.62 72620.27 1210.34 185.0
107.1 5003.91 83.40 83398.43 1389.97 185.0
110.0 5278.56 87.98 87976.01 1466.27 185.0
5" 125.0 6824.50 113.74 113741.61 1895.69 185.0
133.7 7807.53 130.13 130125.42 2168.76 185.0
6" 150.0 9839.04 163.98 163984.07 2733.07 185.0
159.3 11096.91 184.95 184948.45 3082.47 185.0
182.5 14581.94 243.03 243032.33 4050.54 185.0
190.0 15805.08 263.42 263418.04 4390.30 185.0
8" 200.0 17533.48 292.22 292224.67 4870.41 185.0
206.5 18691.68 311.53 311527.93 5192.13 185.0
10" 250.0 27428.75 457.15 457145.91 7619.10 185.0
260.4 29793.76 496.56 496562.71 8276.05 185.0
12" 300.0 39544.48 659.07 659074.72 10984.58 185.0
309.7 42143.03 702.38 702383.91 11706.40 185.0
339.6 50673.25 844.55 844554.17 14075.90 185.0
400.0 70301.30 1171.69 1171688.40 19528.14 185.0
500.0 109845.79 1830.76 1830763.12 30512.72 185.0
600.0 158177.93 2636.30 2636298.89 43938.31 185.0
700.0 215297.74 3588.30 3588295.71 59804.93 185.0
800.0 281205.22 4686.75 4686753.58 78112.56 185.0
900.0 355900.35 5931.67 5931672.51 98861.21 185.0
1000.0 439383.15 7323.05 7323052.48 122050.87 185.0
Referred to DIN 1945/ISO 1217 (20 °C, 1000 mbar) and compressed air

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Measuring ranges depending from the inner diameter of the pipe
MEASURING RANGES HIGH SPEED
The sensor VA 400 - high speed version with or without display, has a maximum measuring
range of 224.0 m/sec. The flow rate is programmed to:
Inner diameter: 53.1 mm
This corresponds with an analogue output 4… 20 mA of
0… 1450.06 m³/h 0… 24.17 m³/min 0… 24167.64 l/min 0…402.79 l/sec 0… 224.0 m/sec.
In case of the version with display the inner diameter 25.00 has to be set first if the sensor is used in
other pipes, e. g. 1", 25 mm.
The analogue output for 1" can be taken from the table below: 4… 20 mA =
0… 295.30 m³/h 0... 4.92 m³/min 0… 4921.62 l/min 0… 82.03 l/sec 0… 224.0 m/sec.
In case of the version with display please adjust the respective inner diameter (see page 21).
Inner diameter
of the pipe Flow
(final value of measuring range) max.
Inch mm m³/h m³/min l/min l/s m/s
1/4" 6.0 11.40 0.19 190.00 3.17 224.0
10.0 36.42 0.61 606.96 10.12 224.0
15.0 94.05 1.57 1567.53 26.13 224.0
1/2" 16.1 110.16 1.84 1835.96 30.60 224.0
3/4" 21.7 215.33 3.59 3588.77 59.81 224.0
1" 25.0 295.30 4.92 4921.62 82.03 224.0
26.0 321.11 5.35 5351.77 89.20 224.0
27.3 356.85 5.95 5947.52 99.13 224.0
28.5 391.48 6.52 6524.74 108.75 224.0
30.0 437.20 7.29 7286.64 121.44 224.0
1 1/4" 32.8 528.75 8.81 8812.49 146.87 224.0
36.0 643.52 10.73 10725.32 178.76 224.0
36.3 655.12 10.92 10918.73 181.98 224.0
1 1/2" 39.3 774.73 12.91 12912.18 215.20 224.0
40.0 803.59 13.39 13393.14 223.22 224.0
41.8 881.96 14.70 14699.41 244.99 224.0
43.1 941.21 15.69 15686.78 261.45 224.0
45.8 1068.14 17.80 17802.30 296.71 224.0
2" 50.0 1282.52 21.38 21375.40 356.26 224.0
51.2 1346.48 22.44 22441.40 374.02 224.0
53.1 1450.06 24.17 24167.64 402.79 224.0
54.5 1529.41 25.49 25490.17 424.84 224.0
57.5 1712.89 28.55 28548.16 475.80 224.0
60.0 1869.63 31.16 31160.58 519.34 224.0
64.2 2148.38 35.81 35806.27 596.77 224.0
Referred to DIN 1945/ISO 1217 (20 °C, 1000 mbar) and compressed air

15 V5-02-2010
Measuring ranges depending from the inner diameter of the pipe
MEASURING RANGES HIGH SPEED
Sensor VA 400 - high speed version up to 224.0 m/sec.
Inner diameter
of the pipe Flow
(final value of measuring range) max.
Inch mm m³/h m³/min l/min l/s m/s
2 1/2" 65.0 2204.93 36.75 36748.79 612.48 224.0
70.3 2588.55 43.14 43142.50 719.04 224.0
71.1 2647.80 44.13 44129.99 735.50 224.0
76.1 3040.63 50.68 50677.24 844.62 224.0
3" 80.0 3364.33 56.07 56072.15 934.54 224.0
82.5 3582.20 59.70 59703.26 995.05 224.0
84.9 3793.65 63.23 63227.43 1053.79 224.0
90.0 4268.24 71.14 71137.32 1185.62 224.0
4" 100.0 5275.76 87.93 87929.41 1465.49 224.0
107.1 6058.78 100.98 100979.72 1683.00 224.0
110.0 6391.34 106.52 106522.31 1775.37 224.0
5" 125.0 8263.17 137.72 137719.57 2295.33 224.0
133.7 9453.44 157.56 157557.27 2625.95 224.0
6" 150.0 11913.22 198.55 198553.68 3309.23 224.0
159.3 13436.25 223.94 223937.58 3732.29 224.0
182.5 17655.97 294.27 294266.18 4904.44 224.0
190.0 19136.96 318.95 318949.42 5315.82 224.0
8" 200.0 21229.73 353.83 353828.78 5897.15 224.0
206.5 22632.08 377.20 377201.39 6286.69 224.0
10" 250.0 33211.03 553.52 553517.21 9225.29 224.0
260.4 36074.61 601.24 601243.50 10020.73 224.0
12" 300.0 47880.89 798.01 798014.80 13300.25 224.0
309.7 51027.24 850.45 850454.04 14174.23 224.0
339.6 61355.72 1022.60 1022595.32 17043.26 224.0
400.0 85121.58 1418.69 1418692.98 23644.88 224.0
500.0 133002.47 2216.71 2216707.78 36945.13 224.0
600.0 191523.55 3192.06 3192059.20 53200.99 224.0
700.0 260684.83 4344.75 4344747.24 72412.45 224.0
800.0 340486.31 5674.77 5674771.91 94579.53 224.0
900.0 430927.99 7182.13 7182133.20 119702.22 224.0
1000.0 532009.87
8866.83 8866831.11 147780.52 224.0
Referred to DIN 1945/ISO 1217 (20 °C, 1000 mbar) and compressed air

16 V5-02-2010
MAXIMUM VELOCITY OF THE DIFFERENT GASES
[J/kg*K] Luft/Gas
VA 400 Standard VA 400 Max. VA 400 HighSpeed
Max. velocity
[m/s] Max. velocity [m/s] Max. velocity [m/s]
Reference DIN1945/ ISO 1217: 20°C, 1000 mbar (reference at calibration of the sensors)
Air ## ## 92.7 185.0 224.0
Adjustment to DIN 1343: 0°C, 1013.25 mbar
Air ## ## 85.2 170.1 206.0
Argon Ar ## ## 144.9 289.2 350.2
Carbon dioxyde CO2 ## ## 91.7 183.1 221.6
Nitrogen N2 ## ## 82.4 164.5 199.2
Oxygen O2 ## ## 88.4 176.4 213.6
Nitrous oxide N2O ## ## 90.9 181.4 219.7
Natural gas NG ## ## 54.8 109.4 132.5
Maximum velocities of VA 400 for different gases and reference standards
Please note:
The consumption sensor VA 400 corresponds with the latest state of technology and can
generally be used for burnable and non-burnable gases.
If this consumption sensor is used for measurement of burnable gases (e. g. natural gas) we
explicitly point out that the sensor has no DVGW admission, however, it can be used for
burnable gases. A DVGW admission is not mandatory.
For the use in e. g. natural gas the sensor will be calibrated in natural gas. The calibration
protocol (inspection certificate) is included in the scope of delivery.
The area outside the pipe (environment of the sensor) is not allowed to be an explosive area.

17 V5-02-2010
Connector plug A
Connector plug B
DRAWING OF THE INSTRUMENT/INSTRUMENTS DIMENSIONS
mm
Pulse output:
1 pulse per m³ (factory setting)
With the option display VA 400 or in case of connection to a multifunction measuring instrument
DS 300 the pulse output to litre, kg, cf is set via the setting of the consumption unit litre/min, kg/h, cfm.
Active pulse to connector plug A (PIN 5)
In case of the version VA 400 without display the pulse is an active signal (not galvanically isolated)
Pulse +P = +VB (12...30 VDC), max. current I = 10 mA,
to connector plug A.
If VA 400 is connected to a multifunction measuring instrument DS 300 DS 300 will convert the active
pulse signal into a galvanically isolated pulse. Pulse diagram please see page 18.
Galvanically isolated pulse to plug B (PIN 4 and PIN 5)
In case of the version VA 400 with display there is a galvanically isolated pulse available on
connector plug B (PIN 4 and 5) in addition to the connector plug A (PIN 5). An isolated contact is clo-
sed for the duration of the pulse (semi-conductor relay galvanically isolated by optocoupler).
Maximum switching capacity: 30 VDC, 20 mA
Pulse diagrams please see page 18.

18 V5-02-2010
Pulse output signal indication
Pulse lengths depending on consumption
Internal pulse receiver:
The numbers of m³ per second are summed up
and indicated after one second.
Pulse lengths depending on consumption
Pulse output:
max. voltage
pulse +P = +VB (12 .. 30 VDC),
active signal
max. current I = 10 mA
PULSE OUTPUT / PULSE LENGTHS
Table of pulse lengths and maximum flow quantities
Pulse length
[ms]
[m³/h] [m³/min] [l/min]
120 10,800 180 180
60 21,600 360 360
30 39,600 660 660
[cfm]
180
360
660
[kg/h]
10.800
21.600
39.600
[kg/min]
180
360
660
[kg/s]
3
6
11
10 129,600 2,160 2,160 2,160 129,600 2,160 36
Max. flow 129,600 2,160 2,160 2,160 129,600 2,160 36
Maximum 36 pulses can be given per second.
Please observe: If the maximum flow is exceeded there will be no more signals!
In this case please set the units e. g. from l/min to m³/h. !

19 V5-02-2010
CONNECTION OF THE INSTRUMENT
If no connection cable ( 0553 0104, 0553
0105 ) is ordered the sensor will be sup-
plied with a M12 connector plug. the user
can connect the supply and signal cables
as indicated in the connection diagram.
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5
Connector plug A NC
(SDI) -VB +VB I+ 4..20 mA NC (pulse)
active not
isolated
Connector plug B
only assigned with display NC NC NC pulse
isolated pulse isolated
colours connection cables
0553.0104 (5 m)
0553.0105 (10 m) brown white blue black grey
colours pulse cables
0553.0106 (5 m)
0553.0107 (10 m) brown white blue black grey
-VB Negative supply voltage 0 V
+VB Positive supply voltage
12...30 VDC - smoothed
I + Current signal 4..20 mA - actual
flow
Plug A
PIN 1
(SDI)
is only required for connection to
DS 300
Pulse Pulse for consumption
NC (SDI) Is not allowed to be put to potential
and/or earth. Please cut off cables
and isolate them
Plug A
PIN 5 only for connection to DS 300 !
Legend:
Connector plug A
View reverse side (clamp side) Connector plug B
PIN 4 and 5
(only assigned if VA 400 has a display)
View reverse side (clamp side)
max. 30 VDC, 20 mA
black
blue
white black
grey

20 V5-02-2010
SERVICE INFORMATION
Maintenance
The sensor head should be checked regularly for dirt and cleaned if necessary. Should dirt,
dust or oil accumulate on the sensor element, a deviation will occur in the measuring value.
An annual check is recommended. Should the compressed air be heavily soiled this interval
must be shortened.
Cleaning of 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 to carry out calibration every
12 months. For this purpose the sensor must be sent to the manufacturer.
Spare parts and repair
For reasons of measuring accuracy spare parts are not available.
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 to keep a
spare measuring system ready.
Calibration certificates
Calibration certificates are issued by the manufacturer on request. This is a fee-paying
service. Precision is tested with DKD (= German calibration authority) certificated volume
flow meters.