Instruction manual

26
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Consumption
 Easy and affordable installation
 Units freely selectable via keypad m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
 Compressed air counter up to 1,999,999,999 m³. Resettable to "zero" via keypad
 Analogue output 4...20 mA, pulse output (galvanically separated)
 High measuring accuracy also in the lower measuring range
(ideal for leakage measurement)
 Negligibly small loss of pressure
 Calorimetric measuring principle, no additional pressure and temperature
measurement necessary, no mechanically moved parts
 Gas types adjustable via software (nitrogen, oxygen, CO
2
, nitrous oxide, argon)
 Compressed air balancing, com-
pressed air consumption measurement
 Leakage air / leak rate determination
 Mobile compressed air
measurement in front of single
machines/plants
 Flow measurement of process
gases like e. g. nitrogen, CO
2
,
oxygen, argon, nitrous oxide
 Flow measurement at nitrogen
generators
At the touch of a button:
– reset of counter reading
– selection of units
Application-technological features of the
consumption counters VA 420:
Application range of
VA 420:
왗
왗
Display twistable by 180°
Display shows 2 values:
Actual consumption in m³/h, l/min,…
Total consumption
(counter reading) in m³, l
Values indicated in the display
turnable by 180°, e. g. in case
of overhead installation
VA 420 – The advantages at a glance
4…20 mA output for actual consumption
Pulse output for total consumption
(counter reading)
Measuring device removable:
Dismounting of the whole measuring section
is not necessary, no bypass required.
Screw-in thread:
Easy installation into the existing pipeline
due to integrated measuring section
(suitable for
1
/4",
1
/2",
3
/4", 1", 1
1
/4", 1½"
or 2" lines).
High measuring accuracy due
to defined measuring section
(inlet and outlet section).