Beckman Coulter MET ONE 6000 Bedienungsanleitung Seite 25

2
Let a tiny amount of particles flow through the instrument to get a count in the test channel.
NOTE
One method to get counts is to use a zero count filter, and put a pin-hole in the tubing that is
between the filter and the instrument.
3
On the Basic Setup tab of the setup utility software, temporarily set:
• Count Cycles—1
• Sample Timing: Hold—10 seconds or more
4
Click
Save Settings
5
Select the Data Display tab, then click
continuously as each sample is taken.
6
Click
Sample
7
When the Status value changes from "Count" to "Stop", measure the voltage across the load
resistors for each channel. Also note the counts shown in the display for each channel.
8
Use the equation that follows to calculate the expected voltage from the counts shown. Make
sure that the measured and calculated voltages agree.
Voltage = (((SC ÷ FC × 16) + 4) ÷ 1000) × RL
Where:
SC = sample count at the end of the sample period
FC = full-scale channel count. Refer to the analog settings in the setup utility software.
RL = value of the load resistor in ohms
The expected output voltage when the full-scale channel count is 1000 with a 100, 250 and 500-
ohm resistor is shown in
9
To do the test again, do steps 7–8.
10
For units with a flow monitor, temporarily remove the central vacuum from the instrument.
11
While a flow alarm is active, measure the voltage across the load resistors for each channel.
DOC026.97.80340, Edition 4
.
Monitor
if shown to start sample collection.
Table 7.
MET ONE 6000: 6003, 6005, 6013, 6015 (English)
if shown so the data shown can update
Operation
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