Campbell Met One 034A-L Návod k obsluze stáhnout pdf (Strana 29)

Manual

Sensors

The LI200X should never be shaded by the tripod tower or other sensors.

Attach the pyranometer cable to the wiring panel of the CR10X logger according to table 1 in paragraph 2.2, and

Annex 2, as follows:

- red wire to terminal H2;

- black wire to terminal L2;

- white wire to left most G terminal of upper terminal block;

- clear wire to next left most G terminal of upper terminal block.

Remove the red protection cap after installing the sensor. Save this cap for shipping or storing the sensor.

3.3.3 Use

The operation of the LI200X pyranometer is fully automatic and no user actions are required. The appropriate

instructions to this end are included in the METSTAT datalogger program. The reader is referred to paragraph 2.2

and Annex 3 in case of need of more information on METSTAT.

3.3.4 Maintenance

The following maintenance is required:

• DuringeveryvisittotheMetStation,checkifthelevelofthepyranometerisperfectlyhorizontal(theair

bell of the spirit level should be in the middle of the circle on the glass), correct if necessary with the adjustment

screws;

• Removeanydustordebrisfromthepyranometerwithasoftbristle;

• Checkifthedrainholenexttothesensorisfreeofdebris;

• CalibratetheLI200Xeverytwoyears(contactCampbellScientific).

Box 6: Caution While Cleaning the Solar Radiation Sensor

The surface of the silicon photovoltaic cell is sensitive to scratching. Handle the sensor with care while

cleaning. Only use a soft bristle. Never use hard or sharp materials for this purpose.

3.3.5 Trouble Shooting

Problem 1: Solar radiation values are zero.

Remedy 1.1: Check if all LI200 wires are properly connected to the CR10X wiring panel. The reader is referred to

table 1 in paragraph 2.2 and Annex 2 for the correct wiring of the LI200 to the CR10X.

Remedy 1.2: Re-load METSTAT following the instructions given in paragraph 2.5.

Problem 2: Solar radiation measurements are in a range well below expected values.

Remedy 2: Carefully clean the sensor or remove any object that is shading it.

3.4 CS500 Temperature and Relative Humidity Probe

3.4.1 General

The CS500 Temperature and Relative Humidity Probe electronically measures both temperature and relative humidity.

It contains a platinum resistance temperature detector and a Vaisala INTERCAP capacitive relative humidity sensor.

The probe is programmed to take measurements at a 5-minutes interval. The datalogger places all daily recordings

in a temporary memory, and this information is then used to determine (a) hourly average temperature and relative

humidity, (b) daily average temperature and relative humidity, and (c) daily maximum and minimum temperatures.

Only these values are stored in the logger’s Final Storage Area, and the temporary memory is erased at the end of

a recording day.

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Campbell Met One 034A-L Návod k obsluze Strana 29