ATEQ F580 - Page 125

Chapter 4 – Functions of the instrument
UM-18400E-U ATEQ F580 User manual Page 115/168
2.2.1. 5) Indirect or recovery measurement
a) Principle
Principle with test pressure under 16 bars.
REFERENCE
OUTPUT
TEST
OUTPUT
EQUALISATION
VALVE
REGULATOR 1
REGULATOR 2
FILL VALVE
PIEZO
SENSOR 1
PIEZO
SENSOR 2
ATEQ INSTRUMENT
BELL
TEST
PART
SECURITY
VALVE
The test part is pressurised
under a sealed bell. The
measurement circuit of the
ATEQ instrument is
connected to this bell. The
part is pressurised through
the use of a second regulator
(reg 2) and the fill valve, the
bell is filled with a low
pressure via regulator 1.
If the part leaks, the pressure
in the bell will increase and
will be detected by the
ATEQ
instrument.
This method enables the
testing of certain parts under
a high pressure whilst
avoiding the associated
problems.
The
ATEQ F5 only controls
and measures the pressure
rise in the bell. In the event of
a large leak, an electronic
monitoring of the pressure in
the bell will allow the securing
of the instrument.
The pressure monitoring is
carried out by two electrical
piezo sensors.
Principle with test pressure in excess of 16 bars.
REFERENCE
OUTPUT
TEST
OUTPUT
EQUALISATION
VALVE
REGULATOR 1
EXTERNAL
REGUALTOR
EXTERNAL
FILL VALVE
PIEZO
SENSOR 1
PIEZO
SENSOR 2
ATEQ INSTRUMENT
BELL
TEST
PART
SECURITY
VALVE
P ≥ 16 BAR