Vaisala DRYCAP DMT340 SERIES Guia do Utilizador descarregar pdf (Página 71)

Chapter 4 ________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 71

CHAPTER 4

OPERATION

This chapter contains information that is needed to operate this product.

Getting Started

Within a few seconds after power-up the LED on the cover of the

transmitter is lit continuously indicating normal operation. When the

transmitter is turned on the first time, the language selection window

opens: Select the language with ▼▲ arrow buttons and press the

SELECT button (the left-hand button).

The pressure has an effect on humidity calculations and accuracy.

Therefore, accurate calculations can be achieved only when the ambient

pressure is taken into consideration. See page 101 for instructions on how

to set the pressure.

Start-up time for DMT340 transmitter is in total about 6 minutes. The

ouputs (serial and analog) are activated 3 seconds after powering up the

DMT340. In addition, 10 seconds after the measurement the outputs will

freeze for about 6 minutes due to the sensor self diagnostics procedure

(Sensor Purge and Autocal). The frozen output value will be the value the

DMT340 transmitter reached during the 10 seconds of measurement.

After the self diagnostics procedure the outputs are operational again.

Display/Keypad

Basic Display

Display shows you the measurement values of the selected quantities in

the selected units. You can select 1... 3 quantities for the numerical basic

display (see section Changing the Quantities and Units on page 98).

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 168 169

Sem comentários

Vaisala DRYCAP DMT340 SERIES Guia do Utilizador Página 71