Download Model 8552/8554 Q-Trak Plus Manual

Chapter 4
Calibration and Maintenance
The Model 8552/8554 Q-TRAKTM Plus IAQ Monitor requires very little
maintenance to keep it performing well.
The Q-TRAK Plus monitor may be calibrated in the field using the
instructions below. Even so, we recommend that you return your Q-TRAK
Plus monitor to TSI for calibration annually. For a nominal fee, we will
quickly clean and recalibrate the unit, update software and firmware, and
return it to you in “as new” working condition along with a Certificate of
Calibration and NIST Traceability. The factory calibration is more precise
than can be accomplished with the procedures below. This “annual checkup”
helps ensure that the Q-TRAK Plus monitor is always in good operating
condition.
Calibrating the CO2 Sensor
TSI recommends calibrating the Q-TRAK Plus monitor CO2 measurement
monthly to help ensure accurate readings.
To calibrate the CO2 sensor, please follow the procedure below. You can
also follow the prompts displayed on the screen while in user calibration
mode. You will need a cylinder of zero CO2 air or nitrogen for the zero
calibration and a cylinder of gas with a known concentration of CO2 for the
span calibration. Contact your local TSI distributor for available CO2
calibration kits (see Figure 4-4).
Note:
If using air for zero calibration, it must be specified to have
less than 10 ppm CO2. Ambient room air cannot be used (see
Appendix A).
The calibration procedure can be aborted at any time by pressing the key.
Any step in the calibration procedure can be repeated by pressing the S key.
1.
To put the Q-TRAK Plus monitor into CO2 calibration mode, press the
S or T keys to select CALIBRATION in the Setup Menu.
2.
Select CO2 by pressing the S or T keys the in the calibration submenu
and press the ↵ key (see Figure 4-1).
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