TM70Bi V3.2 (11/02)
1121174 L0.pdf
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15.1 - INTRODUCTION and FUNCTIONAL DESCRIPTION
The IN0450P electronic card can be conected to the LR70, 0-3V analogue input and it allows to
measure the frequency coming from a pulse generator operating between 0 - 450 Hz range.
This electronic card is a frequency voltage converter and it can be used, for example, as an
interface between an anemometer (sensor) that provides a pulsed signal, in order to show in the
transmitter’s display the speed of the wind, in real time mode, using the feedback option.
The card supplies a +12v DC voltage output to power the sensor.
Technical characteristics:
Maximum resolution: 8 bits.
Input frequency range: 0 – 450 Hz.
Galvanically isolated from the main logic board (LR70).
Operating temperature range: –20ºC a +70ºC
Signals and connections block diagram:
+12v DC
ENTRADA PULSOS
PULSED SIGNAL INPUT
GND