TSI Instruments Q-Trak XP - Page 46

32 Q-Trak™ XP IAQ Monitor Model 7585
NOTE
For best results, power on the instrument for 10 minutes before
verifying gas sensor performance. This allows the instrument and
sensors to thermally stabilize and reduces the amount of
measurement drift during verification or calibration.
NOTE
Specific instructions for the calibration of each sensor are
available during calibration. To access the help for a sensor,
select and a pop-up appears with information to guide you
through specific sensor calibrations.
The following table shows the recommended calibration gases
and their respective concentrations (in ppm) for each gas sensor.
Calibration gases are available globally through local
distributors.
Table 1: Calibration Gases and Concentrations
Carbon Dioxide
(CO
2
)
Carbon Dioxide
(CO
2
)
5000
Nitrogen
TVOC – High
Isobutylene
(C
4
H
8
)
100
2000
Zero Air or
Nitrogen
100 ppm is the
first span
2000 ppm is
the second
span
TVOC - Low
Isobutylene
(C
4
H
8
)
20
Zero Air or
Nitrogen
Carbon Monoxide
(CO)
Carbon
Monoxide (CO)
400
Zero Air
Nitrogen Dioxide
(NO
2
)
Nitrogen Dioxide
(NO
2
)
20
Nitrogen
Nitric Oxide (NO)
Nitric Oxide
(NO)
20
Nitrogen
Chlorine (Cl
2
)
Nitrogen Dioxide
(NO
2
)
20
Zero Air
Nitrogen
Dioxide (NO
2
)
is used as a
surrogate
SPAN
calibration gas
Ozone (O
3
)
Nitrogen Dioxide
(NO
2
)
20
Zero Air
Nitrogen
Dioxide (NO
2
)
is used as a
surrogate
SPAN
calibration gas