TSI Instruments DustTrak 8540, Operation And Service Manual

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Appendix A
Specifications
Specifications are subject to change without notice.
8540 / 8540-M / 8542-M / 8543 / 8543-M DustTrak
™ Environmental
Monitors are designed to operate inside a weather-proof enclosure,
like TSI
®
Model 854038 Environmental Enclosure, sold separately.
Sensor Type ........... 90° light scattering
Range ...................... 0.001 to 400 mg/m
3
(models 8540,
8540-M, & 8542-M)
0.001 to 150 mg/m
3
(models 8543 &
8543-M)
Resolution .............. ±0.1% of reading or 0.001 mg/m
3
,
whichever is greater
Zero Stability .......... ±0.002 mg/m
3
24 hours at 10 sec time
constant
Particle Size
Range
......................
Approximately 0.1 to 10 µm (8540,
8540-M, 8542-M) / 0.1 to 15 µm (8543,
8543-M)
Flow Rate ................ 3.0 L/min set at factory
Flow Accuracy ........ ±5% factory setpoint
Internal flow controlled
Temperature
Coefficient
..............
+0.001 mg/m
3
per °C
Operational Temp .. 0° to 50°C
Storage Temp ......... -20° to 60°C
Operational
Humidity
..................
0
–95% RH, non-condensing
Time Constant ........ Adjustable 1 to 60 seconds
Data Logging .......... 45 days at 1 minute samples
Log Interval ............. 1 second to 1 hour