Vaisala HMP60 Guia do Utilizador descarregar pdf (Página 52)

User's Guide _______________________________________________________________________

50 ___________________________________________________________________ M211060EN-F

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. This command is not available on the HMP110D.

AOVER [ON/OFF]<cr>

The following example illustrates how the analog output is affected.

Channel 1 outputs T

with voltage output 0 … 5 V (-40 °C … +60 °C).

After giving the AOVER ON command, the range is 0 … 5.5 V

(-40 °C … +70 °C). Note that the +60 °C T

point is still at 5 V.

Example:

aover on

AOVER : ON

Extend Maximum RH Reading

With digital output, use the RHLIMIT command to set the maximum

RH reading from 100% (default) up to 120%.

With analog output, the RHLIMIT command allows you to extend the

high limit of the analog output scaling up to 120%. This command does

not change the scaling automatically. To change the scaling, use the

ASEL command (see Set Analog Output Parameters and Scaling on page

48).

RHLIMIT [max_rh]<cr>

where

max_rh

Maximum reading of the RH parameter. The possible values

are 100.0 … 120.0. The default value is 100.0.

Example (extend the maximum RH reading to 120%):

rhlimit 120

Max. RH % : 120.0 %RH

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Vaisala HMP60 Guia do Utilizador Página 52