Chapter 5 - Accessories
UM-22100H-U User manual ATEQ D520 Page 103/122
2.2. NEEDLE VALVE AND LEAK FLOW CALIBRATOR
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 cm
3
/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: ATEQ Leak/
Flow calibrator).
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
CALIBRATEUR DE FUITE
PRESSION
FUITE
TEMP.
GAMME UNITES AUTO-ZERO ON / OFF
MEMOIRE
SEQUENCE
DE
VERIFICATION
ETALONNAGE FONCTIONS
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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