03/ 2012
BENNING SUN 2
11
8.1.1 Switching the BENNING SUN 2 ON/OFF
- Press the keys
3
and
4
at the same time for approx. 2 seconds to switch the BENNING
SUN 2 on. This will be confirmed by an acoustic signal. Press the keys again for > 2 seconds
to switch the device off.
- The BENNING SUN 2 is switched off automatically after approx. 2 minutes (
APO
,
A
uto-
P
ower-
O
ff). It switches on again when the keys
3
and
4
are actuated.
8.1.2 Testing the battery condition
- During switch-on and operation, the BENNING SUN 2 carries out an automatic battery test.
- Discharged batteries are indicated by a battery symbol on the LC display. As soon as the
battery symbol appears, the batteries have to be replaced by new ones immediately (see
section 9.2).
- For testing the battery condition, press the key
7
for > 5 seconds to call the data logger.
"LOG" appears on the digital display.
- Alternately, the display shows the occupied / free memory space as well as the battery volt-
age / the measuring interval in minutes.
- As soon as the battery voltage falls below 1.8 V, immediately replace the batteries by new
ones in order to prevent incorrect measurements (see section 9.2).
- Press the key
3
or
4
to exit the data logger.
8.1.3 Measuring the insolation (solar irradiance)
- After having switched the BENNING SUN 2 on, the insolation is displayed continuously on
the digital display
2
.
- Solar irradiance below 100 W/m² are not indicated. Display: "- - - ".
- Place the BENNING SUN 2 onto the surface of the photovoltaic module and press the
key
7
, if necessary, to store the measured value temporarily in the digital display.
- To store the insolation value for a longer period of time, please use the data logger as de-
scribed in section 8.2.
8.1.4 Measuring the module temperature and the ambient temperature
- Connect the module / ambient temperature sensor
to the BENNING SUN 2 by means
of the jack
.
- Press the key
3
to display the module temperature (TPV) and the ambient temperature
(TA).
- Bring the module temperature sensor
into contact with the PV module and wait until the
temperature sensor has measured the temperature of the PV module.
- To store the module temperature and ambient temperature values for a longer period of time,
please use the data logger as described in section 8.2.
insolation
►
PV module temperature
►
ambient temperature
►
8.1.5 Measuring the angle of inclination
- Press the key
4
to display the angle of inclination and the compass bearing.
- The angle of inclination with respect to the horizontal is indicated continuously on the digital
display
2
.
- Place the BENNING SUN 2 onto the surface of the photovoltaic module and press the HOLD
key
7
, if necessary, to store the measured value temporarily in the digital display.
insolation
►
angle of inclination
►
compass bearing
►