Program Control System; Temperature Diagrams - Atlas XENOTEST BETA LM Operating Manual

ATLAS
7.4 Program control system (fig. 4)
The program control system of the XENOTEST
BETA together with the sensors for irradiance, black
standard temperature, test chamber temperature
and rel.humidity allows the following optional
programming of the requested test procedure:
1. light and dark phases,
2. with controlled irradiance,
3. with controlled black standard temperature,
4. with controlled test chamber temperature,
5. with controlled humidity,
6. with cyclical rain or dew of the samples at
controlled water temperature.
7.5

Temperature diagrams

The black standard temperature (BST and the test
chamber temperature (CHT) resp. the difference
∆T = BST - CHT are of major importance for
material testing.
Fig. 31 shows the temperature fields ∆T for the three
different XENOCHROME filter systems as a
Fig. 31: Temperature fields
80
Xenochrome 270
70
Xenochrome 300
Xenochrome 320
60
50
40
30
20
10
0
0 20
XENOTEST BETA
Safety hints
Program example on
Function
XENOTEST BETA
40 60
Unit set-up
Features
Test set-up
Operating manual XENOTEST BETA LM
XENOTEST BETA offers:
1. Ten test programs with 12 test cycles each
2. continuous display of the current test
parameters comparing Target/Actual,
3. display of the lamp and unit age,
4. program end selectable by exposure time,
radiant exposure and duration of program,
5. interfaces RS 232 and RS 485,
6. printer protocol of the equipment data.
function of the irradiance. Another parameter in this
diagram is the fan speed. With a maximum fan
speed, minimum ∆T values can be achieved, and
maximum ∆T values are obtained at minimum fan
speed.
Fan speed 800 U/ min
Fan speed 2500 U/ min
80 100 120
E [W/ m²]
Options and accessory
Unit description
of the XENOTEST BETA
Care and cleaning
140 160 180
Start-up
List of options
Maintenance
and accessories
Page 39