TSI Instruments Aerotrak 9303 Service Manual

4-18 AeroTrak
®
Handheld and Remote Airborne Particle Counters
7. Re-install mirror into optics block
and fasten it back down with the
two Phillips head screws.
8. Remove the Phillips head screw
holding the laser beam dump
in place.
9. Thread the screw you removed into one of the threaded holes in the
beam block. With a needle nosed pliers, gently pull the beam block
out of the optics block. Beam Dump removal tool (S7000150) can
also be used.
10. Inspect beam dump
surface. If dirty, blow off
with clean dry
compressed air. If it still
does not appear clean,
wipe gently with a soft
lens cleaning tissue
dipped in isopropyl
alcohol.
11. Inspect O-ring on mirror for cracks or abrasions and replace if
necessary. Use Beam Block O-ring from service kit (S7000031).
12. If the O-ring is dry, apply a small amount of vacuum grease to the
outer surface. Re-install beam dump and fasten in place with the
Phillips head screw.

TSI Instruments Aerotrak 9303 Specifications

General

Size Range .	0.3 to 25 µm
Channel Sizes .	0.3 µm and 5.0 µm fixed; 0.5, 1.0, 2.0, or 2.5 µm selectable middle channel.
Counting Efficiency .	50% at 0.3 µm; 100% for particles > 0.45 µm (per ISO 21501-4 and JIS)
Concentration Limits .	2, 000, 000 particles/ft3 at 5% coincidence loss
Zero Count Level .	<1 count / 5 minutes (per ISO 21501-4 and JIS B9921)
Flow Rate .	0.1 CFM (2.83 L/min)
Calibration .	NIST traceable with TSI® calibration system
Sampling Modes .	Manual and automatic
Sampling Time .	1 second to 99 minutes 59 seconds
Sampling Frequency .	1 to 999 cycles or continuous
Light Source .	Long life laser diode
Sample Probe/Tubing .	Isokinetic sampling probe
Exhaust .	Internal HEPA filter
Vacuum Source .	Internal pump
External Surface .	High impact injection molded plastic
Communication Mode .	USB serial output
Data Storage .	1, 500 sample records
Status Indicators .	Low battery and service
Display .	3.2-in. (8.1 cm) 160 x 160 monochrome LCD
AC Power . (power to AC adapter)	110 to 240 VAC 50-60 Hz Universal in-line power supply with country specific plugs
DC Power . (power to instrument)	9 VDC @ 1.5 A
Battery .	Rechargeable Li-Ion
Battery Life .	Up to 4.5 hours of continuous use
Recharge Time .	< 3 hours

Weight and Dimensions

Dimensions (L x W x H)	9.1 x 6.3 x 2.4 in. (23 x 11 x 6.2 cm) (without isokinetic inlet)
Weight .	1.3 lbs (0.58 kg) with battery