SKC Limited EPAM-7500 - Manual (Page 46)

5-3
Checking the Calibration Span,
Continued
Checking
Calibration
Span Follow the steps in the table below to check the Span of the EPAM-7500
Monitor.
Note: Failure to follow this procedure in its entirety may cause an incorrect
“k” value reading.
Step Action
1 Turn EPAM-7500 on.
2 Press Monitor graphic.
3 When the EPAM-7500 starts to begin monitoring, the instrument
will run an auto zero one minute after beginning.
5 Remove Auto Zero filter and impactor sleeve.
6 Insert the span reference into the sensor head (see diagram 5.1).
Allow 2-3 minutes for reading to stabilize.
Note: Be sure the locating pin on the calibration reference slides
into the locating hole on the sensor head. Also, Push down on the
calibration reference to be sure it is aligned properly. Slightly twist
CS-105 clockwise when positioned in alignment hole. This will
ensure the CS-105 is in the exact position and ensure
reproducibility when “K” value is displayed on the EPAM monitor.
7 Observe the printed “k” value on the calibration reference.
Note: The printed “k” value should match the concentration value
shown on the Haz-Dust LCD to within + 10%.
IF THEN
The numbers agree
within + 10%
The EPAM-7500 has passed the span
check test.
The two numbers
do not agree within
+ 10%.
1. Repeat the process to rule out error,
then:
2. Call EDC technical support or
return the EPAM-7500 for
recalibration.
8 Remove Span Reference and place in its protective sleeve.
Note: Optical windows on CS-105 cannot have fingerprints or
contamination, please clean using KK-101 Cleaning Kit.
Note: If the CS-105 is purchased from SKC or as an after-market accessory,
the end user must assign “k” value. To assign “k” value repeat steps 1-6 three
times. Take an average of the three numbers you recorded to get your “k”
value.