TSI Instruments dusttrak II 8530, Руководство по эксплуатации и обслуживанию, Страница: 74 / 79

Appendix B 64
The Zero Module can only be used in a program log mode. The Zero module
function is controlled through these two program mode options:
Auto Zero Interval Interval between re-zeroing the instrument using
the Auto-Zero accessory.
Use Auto Zero Select Yes to use the Zero Module. Select No to
not use the Zero Module.
Important points on Zero Module operation:

The Zero module will take one (1) minute to take a zero reading. The first
45 seconds of that period is used to clear the chamber of particles.
Readings from last 15 second of the period, when the chamber is
cleared of particles, will be averaged to determine the Zero offset.

The log interval, when the Zero module is activated, must be two (2)
minutes or greater. Data will not be recorded to the log file when the Zero
module is activated.