4 setting up the gas for the smart sniffer line, Setting up the gas for the smart sniffer line, See "6.4.4 setting up the gas for the – INFICON HLD6000 Refrigerant Leak Detector User Manual
Page 42
42
6 Operation
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►
To set the alarm, select "
> Setpoints > Setpoint Alarm".
6.4.4
Setting up the gas for the SMART sniffer line
If you use a SMART sniffer line then several different gases can be sniffed. R22, R32, R134a,
R404A, R407C, R410A and R1234yf gases are preset. In addition you can also choose 3 fur-
ther gases from a list of gases that the device can verify.
Preset gases
►
To select one of the gases that the device can sniff, select "
> Gas" and insert the
desired gas.
– If you have internally calibrated a preset gas and are switching over to another preset
gas then recalibration is not required.
– If you have externally calibrated a preset gas and are switching over to another pre-
set gas then the device prompts you to calibrate.
User-defined gases
You can set up 3 additional gases of your choice, provided that these can be verified by the
device. You can obtain more information about this from INFICON by request.
There are various options available for setting up.
Option 1:
You can calibrate the device with the aid of an external calibration leak with the desired
gas and then carry out your measurements.
►
To freely select a gas, select "
> Gas" and then set up "User 1", "User 2" or "User 3".
The calibration factor should be set to "0" in the settings window under "User Gas
Factor".
►
Then calibration with the external calibration leak can be carried out,
Calibration with an external calibration leak", page 45
.
Table 9: Features of the alarm profile
Requirements
Alarm profile
Pinpoint
Alarm profile
Setpoint
Alarm profile
Trigger
Recommended, for precise
leak localization.
The sound of the acoustic
signal changes its frequency
within a window around the
setpoint.
The pitch level is proportion-
al to the leakage rate.
If the selected setpoint is ex-
ceeded, then a two-pitch
signal is issued.
Setpoint
undercut
–
No sound
No sound
Setpoint
exceeded
–
Signal tone with increasing
frequency
Two-tone signal
Acoustic tracing of the mea-
surement result
< 1/10 setpoint: low fre-
quency
–
–
>1/10 setpoint up to 10 ×
setpoint:
rising frequency
> 10 × setpoint: High fre-
quency