2.4.2 Operate LED
The Operate LED, located on the right-hand side of the power LED, indicates the operating
condition.
See the mass spectrometer’s online Help topic “Monitoring the mass spectrometer LEDs” for
details on the Operate LED indications.
2.5 Tuning and calibration information
You must tune and, if necessary, calibrate the instrument prior to use. You can perform these
tasks using IntelliStart (MassLynx) software . For further instruction, see the mass spectrometer’s
online Help.
2.6 Running the mass spectrometer at high flow rates
The ACQUITY UPLC system runs at high flow rates. To optimize desolvation and sensitivity, run
the ACQUITY Xevo TQ-XS system at appropriate gas flows and desolvation temperatures. When
you specify a flow rate, IntelliStart software automatically specifies the settings shown in the
following table.
Table 2–1: Flow rate versus temperature and gas flow:
Flow rate (mL/min) Source temperature
(°C)
Desolvation
temperature (°C)
Desolvation gas flow
(L/h)
0.000 to 0.020
150
200
800
0.021 to 0.100
150
300
800
0.101 to 0.500
150
500
1000
>0.500
150
600
1000
If you are using an APCI interface, IntelliStart software automatically sets the parameters
according to the following table.
Table 2–2: Flow rate versus APCI probe temperature and gas flow:
Flow rate (mL/min)
APCI probe temperature (°C)
Desolvation gas flow (L/h)
0.000 to 0.020
400
800
0.021 to 0.500
500
1000
>0.500
600
1000
June 9, 2016, 715004990 Rev. A
Page 40
