Instruction manual

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29
Consumption
Flow measuring ranges VA 420 for compressed air (ISO 1217: 1000 mbar, 20°C)
Measur. Outer pipe Inner pipe Measuring range L L
1
H H
1
Flange DIN EN 1092-1
section dia. mm dia. mm from to mm mm mm mm 쏗D 쏗K n x 쏗L
DN 15 21.3 16.1 0.2 90 m
3
/h 300 210 213.2 165.7 95 65 4 x 14
DN 20 26.9 21.7 0.3 170 m
3
/h 475 275 218.2 165.7 105 75 4 x 14
DN 25 33.7 27.3 0.5 290 m
3
/h 475 275 223.2 165.7 115 85 4 x 14
DN 32 42.4 36.8 0.7 480 m
3
/h 475 275 235.7 165.7 140 100 4 x 18
DN 40 48.3 41.8 1.0 550 m
3
/h 475* 275 240.7 165.7 150 110 4 x 18
DN 50 60.3 53.1 2.0 900 m
3
/h 475* 275 248.2 165.7 165 125 4 x 18
* Attention: Shortened inlet section! Please observe the recommended minimum inlet section
(length = 10 x inner diameter) on site.
Description Order no.
VA 420 with integrated DN 15 measuring section with weld neck flange 0695 2421
VA 420 with integrated DN 20 measuring section with weld neck flange 0695 2422
VA 420 with integrated DN 25 measuring section with weld neck flange 0695 2423
VA 420 with integrated DN 32 measuring section with weld neck flange 0695 2426
VA 420 with integrated DN 40 measuring section with weld neck flange 0695 2424
VA 420 with integrated DN 50 measuring section with weld neck flange 0695 2425
Option: High-pressure version PN 40
Z695 0411
Special measuring range VA 420 according to customer’s requirements Z695 4006
Connection cables:
Connection cable 5 m (power supply, analogue output) 0553 0104
Connection cable 10 m (power supply, analogue output) 0553 0105
Pulse cable for consumption sensors with M12 plug, length 5 m 0553 0106
Pulse cable for consumption sensors with M12 plug, length 10 m 0553 0107
Further accessories:
Closing cap for meas. section VA 420 (Material: Aluminium)
0190 0001
Closing cap for meas. section VA 420 (Material: Stainless steel 1.4404) 0190 0002
CS Service Software for FA/VA 400 sensors including PC 0554 2005
connection set, USB interface and interface adapter to the
sensor as well as CSM-S for data recording
Mains unit in wall housing 100-240 V, 10 VA, 50-60 Hz/24VDC, 0.35 A 0554 0108
Mains unit 100-240 VAC / 24 VDC, 0.35 A for VA/FA 400 Series, 0554 0107
2 m cable
5 point precision calibration with ISO certificate 3200 0001
Technical data VA 420
Parameters: m³/h, l/min (1000 mbar,
20°C) in case of com
pressed air resp. Nm³/h,
Nl/min (1013 mbar, 0°C)
in case of gases
Adjustable via m
3
/h, m
3
/min, l/min, l/s,
keypad: ft/min, cfm, m/s,
kg/h, kg/min
Meas. principle: calorimetric measurement
Sensor: 2 x silicium chip
Meas. medium: air, gases
Gas types air, nitrogen,
adjustable via argon, nitrous oxide, CO
2
,
software: oxygen
Meas. range: see table at the left
Accuracy:
±1.5% of m.v., ±0.05% of f.s.
On request: Special
calibration via 5 point
ISO calibration certificatet
Operating temp.: -30...80 °C
Operating press.: up to 16 bar
Optional up to PN 40
Analogue output:
4...20 mA for m
3
/h resp. l/min
Pulse output: 1 pulse per m
3
resp. per liter
galvanically separated
PC connection: SDI interface
Power supply: 24 VDC smoothed ± 15 %
Burden: < 500 Ohm
Meas. section: stainless steel, 1.4404
Flanges: Weld neck flange according
to DIN EN 1092-1
Groove-faced and tongue-
faced flange on request