Appendix A
–
Alignment
STACK 602
62
(PC-000848-MA Issue 5, December 2021)
ENVEA
UK Ltd
6.
Enter the New Cal Factor (as described below).
Entering a new Cal Factor
1.
Select
Setup | More Settings | Edit an Existing Device
.
2.
Select the
Device
to be edited and enter the
Cal Factor
value.
3.
Select
Save
to store the settings 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 and change the
Units Name
using the navigation keys.
3.
Select
Save
to store the settings and return to the main menu.
Using the Calibration Tool
The control unit software contains a calibration tool to aid the calibration (or
scaling) procedure. The calibration tool can be used to carry out a simple
calibration with a single sample or to obtain sensor averages for sample runs to
send to ENVEA.
1.
Select the
Quality Assurance / Self-Tests
menu screen and select the
required
Device
from the list.
2.
Select
Calibration
to display the following screen (
Figure 30: Calibration tool screen (Edit mode).
3.
Set the
Start Time
using the LEFT/RIGHT navigation keys to move between
fields (see the dashed line for direction) and the UP/DOWN keys to adjust
the values.
The control unit will now search the logs and calculate and display the
Sensor Average
. A
Max Reading
is also displayed. Comparing the
maximum reading to the sensor average makes it possible to judge if the
sensor readings were steady during the period.
The control unit uses the short-term (ST) log to calculate the average. If this
log is not available, an approximate average will be calculated from the LT
log. The log used for the calculation is displayed on the right-hand side of
the screen.
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