7
The audio alarm offers 2 modes of operation. They are both linked to the zero function.
zero function not activated: the audio alarm starts when the He signal exceeds a fixed
set point: this set point is programmable.
zero function activated:
the audio alarm is modulated with respect to the position of
the helium background.
To active/deactive audio alarm
C 520
Blinking led = reject point
AUTO CAL
ZERO
NEXT
-
+
RESET
CYCLE
SNIFFER
SET POINTS
SPECTRO
MAINTENANCE
OTHER
F1
F3
F2
F4
10
mbar
hPa
Torr
-3
10
-12
10
-11
10
-10
10
-9
10
-8
10
-6
10
-5
10
-4
10
-3
10
-2
10
-2
10
-1
1
10
1
10
2
10
3
COR
mbar.l/s
STDBY
INLET PRESSURE
LEAK RATE
EVAC
TEST
Pa.m
3
/s
Torr.l/s
10
-7
How to read the He signal analog scale?
reject point is visualized by a blinking led.
if the leak value exceeds the reject point, the leds
will turned red (the blinking led will turn orange).
if the leak value remains under the reject point, the leds will remain green.
Example : Reject point = 1 . 10
-7
mbar l/s
He signal analog scale display
Audio alarm
Leak detector in hard vacuum or
sniffing test mode and zero function
not activated.
