Chapter 4 – Functions of the instrument
UM-22100H-U User manual ATEQ D520 Page 69/122
2.1.3. 24) Sign
The SIGN function enables the inversion of the sign (positive or negative) of the
measurement result. This function is useful in the event of vacuum or recovery
measurement as it allows the display of a positive leak result.
The Sign function (when it is
validated) changes the sign
for the leak value.
TEMP.CORR. 1 : Yes
INDIRECT : Yes
SIGN : Yes
Example: if the result is -004 Pa, then the display will be 004 Pa.
2.1.3. 25) Gas (option)
This function allows calculating the flow measurement for a gas different from that
commonly used by the apparatus (air).
The available parameters in the instruments are for the following gas:
¾ Nitrogen (N
2
),
¾ Natural gas (CH
4
, Methane G20),
¾ Propane gas (C
3
H
8
, G31),
¾ Butane gas (C
4
H
10
, G30),
¾ G110,
¾ "User" gas (the parameters have to be indicated, consult us).
The full scale of flow varies according to the employed gas:
Air full scale l/h 5 30 150 500 1500 4000 10000
Nitrogen (N
2
)
4,979 29,87 149,4 497,9 1494 3983 9958
Methane (CH
4
)
G20 natural gas
5,325 31,95 159,7 532,5 1597 4260 10649
Propane (C
3
H
8
)
G31
1,100 6,60 33,0 110,0 330 880 2200
Butane (C
4
H
10
)
G30
1,023 6,14 30,7 102,3 307 818 2045
G110
7,165 42,99 214,9 716,5 2149 5732 14329
The "gas" function is an option asked at the order of the instrument.
NB: the fitting and the calibration of the instrument are established with air. A calibration
with a specific gas can be carried out on request.
) Select the option and adjust settings if necessary.
This type of instrument has a specific hardware configuration, a connection
allows the rejection of a small quantity of gas at each piezo auto reset. The
precautions related to the use of a flammable gas are to be applied to the working
station.
To Next Page
Loading...
