Vaisala PTU300 Guia do Utilizador descarregar pdf (Página 118)

User's Guide ______________________________________________________________________

116 _________________________________________________________________ M210796EN-A

Sensor heating starts-up when the relative humidity of the measuring

environment reaches the RH-value set by a user (RH-limit). The user

can define the RH-sensor heating temperature as well as the duration

of the heating.

After the heating cycle the humidity conditions are checked and new

sensor heating is performed if the predefined conditions are reached

again.

NOTE

During the sensor heating the outputs are locked to the values

measured before the heating cycle.

Setting Humidity Sensor Heating Using

Display/Keypad

When the PTU300 leaves the factory the sensor heating follows the

factory default values. You can enable/disable the function, change the

RH-limit and define the heating temperature and duration of this

function.

1. Open the MAIN MENU by pressing any of the arrow keys.

2. Select Measuring, press the right arrow key.

3. Select Sensor heating, press the ON key.

Using Serial Line

XHEAT

Enables/disables the sensor heating.

XHEAT [xx]

where:

xx = ON / OFF

>xheat on

Extra heat : ON

>xheat off

Extra heat : OFF

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Vaisala PTU300 Guia do Utilizador Página 118