Vaisala WMS302 Betriebsanweisung PDF herunterladen (Seite 25)

Chapter 2 __________________________________________________________ Product Overview

VAISALA_______________________________________________________________________ 23

Backup capacity with average power consumption of 10 mA (basic set

of 5 sensors, 10 min measuring interval) is 130 hours. The battery can

be charged with the logger.

Additional Internal Battery

The additional internal battery QMB102 is easily installed to the

existing DIN-rail inside the tubular enclosure. The in-built battery

charger on the MAWS logger will charge the additional battery as well.

0402-023

Figure 6 Additional Internal Battery QMB102

Wall Adapter

A usual wall adapter (110/230 VAC, output min. 12 V/500 mA) can be

used when the distance to the MAWS system is less than 100 m

(328 ft.), provided that the wall adapter can be installed indoors.

NOTE

When a 12 V backup battery is used, it is recommended that QMB101

is disconnected by removing the red battery connector from the CPU.

This way the current consumption will be reduced when the charging

circuits of QMB101 are not in use.

NOTE

When the power cable resistance exceeds 10 Ω, a capacitor (from 100

to 200 µF, 40 V) should be added between GND and +ExtDC pins.

Make sure that the polarity is correct.

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Vaisala WMS302 Betriebsanweisung Seite 25