Vaisala DRYCAP DMT345 Uživatelská příručka stáhnout pdf (Strana 122)

USER'S GUIDE____________________________________________________________________

122 _________________________________________________________________ M210762EN-D

Example:

>OPEN 2 (opens the line to transmitter 2, other

transmitters stay in POLL mode)

>CRH(for example, calibration performed)

...

>CLOSE (line closed)

SDELAY

With the sdelay command you can set delay (response time) for user port

(RS-232 or RS-485), or view currently set delay value. Value

corresponds to tens of milliseconds (eg. 5 = 0.050s minimum answer

delay). The value can be set between 0...254.

Example:

>sdelay

Serial delay : 0 ? 10

>sdelay

Serial delay : 10 ?

Sensor Functions

AutoCal

To obtain the best possible accuracy in measurements taken in dry

environments, DMT345 and DMT346 have a built-in AutoCal feature.

During the AutoCal, the transmitter adjusts the dry-end reading to

correspond to the calibrated values. This is a unique and patented method

to avoid errors in accuracy when monitoring low dewpoints.

The AutoCal is carried out if the following criteria for the measurement

environment are fulfilled:

- Relative humidity must be <10 %.

- Temperature must be 0<T<140 ºC.

- Humidity environment must be stable. The maximum change in the

dewpoint can be 2 ºC in 15 seconds.

NOTE

AutoCal cannot operate if the above conditions are not fulfilled.

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Vaisala DRYCAP DMT345 Uživatelská příručka Strana 122