Vaisala Drycap DMT152 Guide de l'utilisateur télécharger pdf (Page 54)

User's Guide _______________________________________________________________________

52 ___________________________________________________________________ M210865EN-F

Calibrate Analog Output

Use the ACAL command to force the analog outputs to the following

values:

- Current output: 2 mA and 18 mA

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

After entering the ACAL command, use a calibrated current/voltage

meter to measure the output, and enter the values. Note that the

calibration is only valid for the currently selected analog output modes.

ACAL [channel]

where

Channel

Analog output channel: 1 or 2

Example:

acal 1

Ch1:

I1 ( mA ) ? 0.166

I2 ( mA ) ? 18.1

3.61058569E+02 1.40927863E+03

Extend Analog Output Range

Use the AOVER command to allow the analog output channels to

exceed their specified range by 10%. The scaling of the quantity remains

as before; the extra range is used for additional measurement range in the

wet end.

AOVER [ON/OFF]<cr>

The following example illustrates how the analog output is affected.

Channel 1 outputs T

with voltage output 0 … 5 V (-80 °C … -30 °C).

After giving the AOVER ON command, the range is 0 … 5.5 V (-80 °C

… -25 °C). Note that the -30 °C T

point is still at 5 V.

Example:

aover on

: ON

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 69 70

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Vaisala Drycap DMT152 Guide de l'utilisateur Page 54