Vaisala BAROCAP PTB330 Guía de usuario descargar pdf (Pagina 123)

Chapter 6 ___________________________________________________Calibration and Adjustment

VAISALA ______________________________________________________________________ 121

Analog Output Adjustment (Ch1)

In the analog output calibration the analog output is forced to the

following values:

- Current output: 2 mA and 18 mA.

- Voltage output: 10 % and 90 % of the range.

Connect PTB330 to a calibrated current/voltage meter in order to

measure either current or voltage depending on the selected output

type.

NOTE

Normally, analog output module does not need to be adjusted once it

has left from the factory. However, if accuracy of the unit is

suspected, it is advisable to return the unit to Vaisala for re-

adjustment/calibration.

Using Display/Keypad

To adjust the analog output:

1. Press the

ADJ button to open the ADJUSTMENT MENU.

2. Select

Adjust analog outputs, press the right arrow key.

3. Select the output to be adjusted

Adjust analog output 1, press

the

START button.

4. Measure the first analog output value with a multimeter. Give

the measured value by using the arrow buttons. Press the

button.

5. Measure the second analog output value with a multimeter. Give

the measured value by using the arrow buttons. Press the

button.

6. Press the

OK button to return to the adjustment menu.

7. Press the

EXIT button to close the adjustment mode and to

return to the basic display.

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Vaisala BAROCAP PTB330 Guía de usuario Pagina 123