Chapter 5 - Accessories
UM-23100B-U User manual ATEQ F CLASS Page 77/90
2.2. NEEDLE VALVE AND LEAK/FLOW CALIBRATOR (CDF)
2.2.1. Needle valve
Needle valves are used to calibrate the leakage
limits. These valves have an adjustable leak and
depending on the model allow adjustments of
between a few cm3/h to several l/min.
These valves can be easily disturbed and
therefore require the frequent use of some
means of checking the setting (eg : SAGA
4000).
Note: it is strongly recommended that you do
NOT leave a needle valve permanently
connected on a leak detection machine with
automatic calibration every "n cycles".
2.2.2. CDF (Leak/Flow Calibrator)
C
LEAK/FLOW CALIBRATOR
The Leak/Flow calibrator is a multiple range
ATEQ flow meter intended for checking leak
testing equipment and particularly ATEQ
instruments. It measures a loss of charge with a
differential sensor, which is connected to a
calibrated flow tube.
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