Vaisala HUMICAP DMT132 Guide de l'utilisateur télécharger pdf (Page 17)

Chapter 2 __________________________________________________________ Product Overview

VAISALA _______________________________________________________________________ 15

Loop-Powered Display (Optional)

The DMT132 can be connected to a loop-powered external LED display

(type Nokeval 301, Vaisala order code 226476). The display provides a

reading of the output quantity. The display is powered by the 4 ... 20 mA

current signal, so there is no need for an external power supply.

The display is delivered at its default settings. Configure the display

functions and scaling according to the documentation delivered with the

display.

1102-053

Figure 6 Nokeval 301 Loop-Powered Display

NOTE

The loop resistance of the display must be included in the loop resistance

calculation for the complete current loop. See section Power Supply

Requirements on page 24. For the loop resistance of the display, refer to

the m

anufacturer’s documentation.

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Vaisala HUMICAP DMT132 Guide de l'utilisateur Page 17