User Manual

15 VPC300-en-GB_v1.9 5/18
Zero the Particle count Sensor
Particles must be purged (removed) from the sensor before and after each use in a high
sample count environment.
Zero the sensor:
1. Unscrew and remove the Isokinetic probe and attach the Zero count filter.
2. Turn on the meter and in the Setup mode,
a. Set the Sample mode to Cumulative.
b. Set the Channel Display to ensure all channels are selected.
c. Set Sample time to 60 seconds
d. Set Sample Cycle to 10
3. Start the meter
4. Allow the meter to run until all of the particle counts read zero. You may need to
run the meter multiple times to ensure that all channels read zero.
5. Turn off the meter.
6. Remove the Zero count filter and attach the Isokinetic probe.
Particle Count Table
Particle count readings, grouped by color, Green (good), Yellow (caution), and Red (hazard),
are shown for each channel.
Channel
Green
Yellow
Red
0.3um
0 to 100,000
100,001 to 250,000
250,001 to 500,000
0.5um
0 to 35,200
35,201 to 87,500
87,501 to 175,000
1.0um
0 to 8,320
8,321 to 20,800
20,801 to 41,600
2.5um
0 to 545
546 to 1,362
1,363 to 2,724
5.0um
0 to 193
194 to 483
484 to 966
10.0um
0 to 68
69 to 170
171 to 340
Note: This table is intended for reference use only