See Step 4 of Programming Instructions.
TE-300-313 Combination Mass Flow Controller with 20 to 60 SCFM Air Flow
Probe, 7- Day Mechanical On-Off Timer and Elapsed Time Indicator.
Controls a constant Flow Rate through 8” x 10” Filter Media (TE-
QMA Micro Quartz Filter Media Required for PM10) Also turns
sampler on and off while registering elapsed time. This product
has the outside appearance of the TE-5007 timer with the
controller and ETI integral to the design.
TE-302 Digital Timer/Elapsed Time Indicator, used to turn sampler on and
off at selected times, and to record elapsed time.