Instruction manual
24
www.cs-instruments.com
Consumption
VA 420
The affordable consumption counter for compressed air and gases
Intelligent solutions for 
accurate consumption 
measurement for 
compressed air and gases
The new affordable consumption counters 
VA 420 work according to the approved 
calorimetric measuring principle. In this 
process a heated sensor is cooled down by 
the gas circulating around it. The flow-
dependent cooling-down is used as a
measuring effect while the degree of 
cooling-down is directly depending on the 
passing air resp. gas mass. Therefore, 
an additional pressure and temperature 
compensation is not necessary. 
Due to its compact design it is possible to 
monitor all compressed air systems from 
the compressor to the smallest compressed 
air tool (
1
/4” to 2 inch) with the new 
affordable consumption counter VA 420. 
VA 400 consumption sensors are available 
for larger pipe diameters from DN 50 to DN 
300. Apart from compressed air also other 
gases like e. g. nitrogen, oxygen and CO
2
can be measured.
The installation of the compressed air 
counters VA 420 can be done easily and 
quickly. A special advantage is the remo-
vable measuring device. The measuring 
device can be demounted quickly and 
easily for calibration or cleaning purposes 
without removing the complete measuring 
section.
new
mit und ohne Flansch
With and without fl ange
R 
1
/4” (DN 8)
DN 15
R 
3
/4” (DN 20)
DN 25
R 1
1
/4” (DN 32)
DN 40
R 2” (DN 50)










