Vaisala WMS302 Guia do Utilizador descarregar pdf (Página 177)

Chapter 6 ______________________________________________________________ Maintenance

VAISALA______________________________________________________________________ 175

Calibration procedure:

1. Establish terminal connection to MAWS by connecting the

terminal cable to the COM0 port of MAWS and to an available I/

O port on your PC.

2. Place both pressure sensors at the same level.

3. Read the reference barometer reading.

4. Give this reference reading to MAWS.

Type: PMT16CAL 1003.7 (reference reading 1003.7 hPa)

5. Check the readings given by MAWS.

Value = reference reading

Measured value = measured by MAWS

Offset = measured value - reference reading

6. Repeat the calibration if necessary.

7. Close the terminal connection by giving the close command.

Rain Gauges

Periodic Maintenance of QMR101

To ensure reliable and accurate measurements, we recommend that the

following checks be carried out at each visit to the rain gauge.

1. Inspect the funnel for any damage or blockage. At certain times of

year, leaves may have accumulated into the funnel. Dirt and dust

can also block the grille preventing or reducing the flow rate to a

slow drip to the buckets beneath. Remove all obstacles from the

funnel.

NOTE

Make sure that the wind does not interfere with the reading of the

reference barometer.

NOTE

If the gauge is still connected to the data logger and logger is operating,

care must be taken to avoid tipping the spoon/bucket when carrying

out the following operations.

1 2 ... 172 173 174 175 176 177 178 179 180 181 182 ... 261 262

Sem comentários

Vaisala WMS302 Guia do Utilizador Página 177