Technical specifications of Fluke 985 dust particle counter
6 particle size channels
0.3 ? m、 0.5 ? m、 1.0 ? m、 2.0 ? m、 5.0 ? m、 10.0 ? m
traffic
2.83 L/min （0.1 cfm）
Light source
775 nm -795 nm, 90mW 3B level laser
counting mode
Raw counting, using #/m3, #/ft3, and #/L in cumulative or differential mode
Counting efficiency
According to ISO 21501 standard, 50% @ 0.3? m. 100% particles>0.45? m
Zero Count
1 count/5 minutes (JIS B9921)
Concentration limit
According to ISO 21501 standard, the concentration of 4000000/ft3 particles is 10%
data storage
10000 records (rotation buffer)
alarm
User selected particle channels and limits
display screen
QVGA color screen (with backlight)
delay time
0 to 24 hours
Sample entrance
Isotropic motion probe
safety
Administrator password control (optional)
communication mode
USB or Ethernet
Dimensions (L x W x D)
27.2 cm x 9.9 cm x 5.3 cm （10.7 in x 3.9 in x 2.1 in）
weight
0.68 kg （1.5 lb）
power adapter
100 V ac - 240 V ac, 12 V dc, 2.5 A
Rechargeable battery
Lithium battery 7.4 V 2600 mAh
Battery duration/charging time
Under normal usage conditions, 10 hours (5 hours of continuous sampling)/3.5 hours
calibration
PSL particles in the air (traceable by NIST)
working environment
10 ° C-40 ° C (50 ° F-104 ° F)/Non condensing relative humidity<95%
Storage environment
-10 ° C-50 ° C (14 ° F-122 ° F)/Non condensing relative humidity within 98%
warranty period
1 year
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