Vaisala HUMICAP HMT330 SERIES Guide de l'utilisateur télécharger pdf (Page 63)

Chapter 3 _______________________________________________________________ Installation

VAISALA _______________________________________________________________________ 63

You can compensate for the clock drift (less than ±2 min/year) by setting

the time on the transmitter. This updates the time offset used on the

display and the serial port. You can set the time by using the

keypad/display or the serial commands.

0706-068

Figure 40 Data Logger Module

The following numbers refer to Figure 40 above:

1 = Flat cable pins

2 = Battery

After a reset or a power up, it will usually take at least 10 seconds before

the data logger module is initialized. The real time clock and the data

logging and reading functions are not available before the initialization is

complete.

The indicator LED on the module will blink green during normal

operation. If the LED is lit in red color, there is a problem with the

module. The transmitter will also indicate the problem by activating the

"Add-on module connection failure" error. If the module is not operating

correctly, the transmitter must be sent to Vaisala for maintenance.

The data logger module must be installed at the factory (when ordering

the transmitter), or by a Vaisala Service Center. Once installed, the

module is automatically used by the transmitter. When the module

requires a new battery, the transmitter must be sent to Vaisala for

maintenance.

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Vaisala HUMICAP HMT330 SERIES Guide de l'utilisateur Page 63