HT Instruments HT305 Manual De Instrucciones página 21

5. OPERATING INSTRUCTIONS
1. USE OF THE
ACCESSORY
This manual contains the instructions to be followed in case the accessory
is to be used for irradiance measurements on photovoltaic installations.
The described procedures are generally valid also for other applications.
1. Fasten the provided bracket (see Fig.2 – left side) in a central position
with respect to the axis of the PV modules (see Fig.2 – right side). The
bracket is provided with a fastening system with screws, compatible
with the holes found on the back side of the PV modules' frame (see
Fig.2 – part 3).
2. Check that the bracket always rests on the border of the module.
3. Once the bracket has been positioned, insert the accessory onto its
support.
4. Connect the connection cable's connector (5 poles for HT305 or 3
poles for HT304k – see Fig.1 – parts 3 and 4) to the remote unit
SOLAR03 (HT305) or to the remote unit SOLAR-02 or to Master
instruments with 3-pole HT connector (HT304k).
5. Always check that the sensor and the photovoltaic module being
tested are parallel (max error ± 2°). If the sensor is not perfectly
parallel to the module's surface, the measured result could be
considerably altered.
6. Tighten the fastening screws.
7.
Expose the sensor of the accessory to the testing conditions
(irradiance, temperature, tilt angle) for at least 1 minute before
carrying out any measurement, to prevent using the sensor before it
has reached the operating conditions
6. MAINTENANCE
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HT305 - HT304k