VIEW 370/373
Appendix A
–
Scaling
ENVEA
UK Ltd
(PC-000855-MA Issue 6, December 2021)
41
3.
Calculate the average sensor response displayed in your control unit (
‘Sensor
Average’)
.
4.
Record the sensor settings.
5.
Obtain the isokinetic sampling results (
‘
Test Result
’
).
6.
Calculate the new SF using the automatic or manual method (see above).
7.
Enter the new Scaling Factor (as described below).
Entering a new Scaling Factor
1.
Select
Setup | More Settings | Edit an existing device
.
2.
Select the
Device
to be edited and enter the
Scaling Factor
value.
3.
Select
Save
to apply the setting and return to the main menu.
Setting the Units to mg/m³
1.
Select
Setup | More Settings | Edit an existing device
.
2.
Select the
Device
to be edited and adjust the
Units Name
using the arrow
keys.
3.
Select
Save
to apply the setting and return to the main menu.
Using the Calibration Tool
The control unit software contains a Calibration tool to aid the scaling procedure
(see
on page 48). The tool can be used to carry out a simple calibration
with a single sample and to obtain sensor averages for sample runs to send to
ENVEA.
1.
Open the
QA/Self-Tests
page 30).
2.
Select the required
Device
from the drop-down list.
3.
Click on the
Scaling
button (top right) to display this screen (F
16).
Figure 16: Calibration tool (with direction of editing).
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