Operating Manual Xenotest
®
220/220+
- 50 -
7.7 Calibration and adjustment
The Xenotest 220/220+ can be operated with different
XENOSENSIV
®
sensors. Depending upon the XENO
-
SENSIV sensor used, different calibration sensors must
be used for the calibration and adjustment.
XENOSENSIV RC 300-400 BST
XenoCal BB 300-400
ID No.: 55007863
for calibration of irradiance in the range of 300 nm to
400 nm.
XenoCal BST
ID No. 55007861
for calibration of the black standard temperature.
XenoCal BB 300-400 BST
ID No. 55007864
for calibration of irradiance in the range of 300 nm to 400
nm and the black standard temperature.
XENOSENSIV RC 420 BPT
XenoCal NB 420
ID No. 55007869
for calibration of irradiance at 420 nm.
XenoCal BPT
ID No. 55007876
for calibration of black panel temperature.
The instructions in the XenoCal Sensor operating
manual must be observed.
7.7.1 Calibration of the
XENOSENSIV RC Sensor
The irradiance and the surface temperature can be
checked (calibrated) with a XenoCal during a running test.
NOTE
When performing a calibration/adjustment, make sure
that the respective measuring variables of the calibration
sensors corresponds to those of the XENOSENSIV.
Proceed as follows to calibrate:
1. Interrupt the test:
• Press the
key.
2. Insert the ready-to-measure XenoCal in place of a
sample rack in the sample rack holder. (See section
6.6 for XenoCal assembly).
3. Continue test (without rain or dark phase):
• Press the
key.
4. At the end of the recommended measuring time
(see XenoCal operating instructions) interrupt the
test.
• Press the
key.
5. Remove the XenoCal from the test chamber and
read out the measured value.
An adjustment can then be made if necessary (see sect.
7.7.2).
7.7.2 Adjustment of the
XENOSENSIV RC Sensor
1. Open the appropriate adjustment menu on the instru
-
ment control panel after calibration (see software docu-
mentation).
2. Enter the measured value read out from the XenoCal
on the keypad of the control panel. The old adjustment
factor and the newly calculated adjustment factor are then
shown on the display.
If the new factor is outside the range of 0.8 to 1.2, the
XENOSENSIV RC should be sent to Atlas for inspection.
3. Confirm and save the new adjustment factor:•
• Press the
key.
The adjusted test parameters should be recalibrated
(measured value check) after adjustment (see sect. 7.7.1).
7
Operation