TSI Instruments Aerotrak 9303 Service Manual

2-26 AeroTrak
®
Handheld and Remote Airborne Particle Counters
Det e c t or Bo a r d Rep l a c ement
1. Follow the instructions in the disassembly section and remove the
optics block from the Model 9303.
2. Unplug cables from detector board.
3. Remove the two Phillips head screws fastening the detector board to
the optics block.
C A U T I O N
The electronic circuits within this instrument are susceptible to
electro-static discharge (ESD) damage. Use ESD precautions to
avoid damage.
• Use only a table top with a grounded conducting surface.
• Wear a grounded, static-discharging wrist strap.
4. Pull the detector board straight out of the optics block.
5. Remove the new detector board from service kit 9303 Detector
PCB (S7000005). Install and fasten in place with the two Phillips
head screws.
6. Turn the laser current adjustment pot fully counter-clockwise.
7. Remove beam block and place a laser power meter in front of the
opening in the optics block.
8. Reconnect all cables to main board and power up the unit. Adjust the
potentiometer until the power meter reads 40 mW ±0.5 mW [Melles
Griot power meter] or 38 mW ±0.5 mW [Newport power meter] at the
beam dump.
9. Turn power off and re-install beam block.
10. Re-assemble unit and calibrate.
Laser current adjustment pot
Remove screws

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