5. Installing and Wiring Components
Figure 14: Board-level Wiring Installation
Connecting a 4-20 mA Sensor to Analog Input 3 or Analog Input 4
The same accuracy and signal level reduction considerations stated in
Sensor to Analog Input 3 or Analog Input 4 (on page 83)
apply when using a 4-20 mA sensor. The
switched voltage source at screw terminal #7 is designed to drive only two 4-20 mA transmitters to
full scale.
Note
: If a system uses more than two, power the additional transmitters from a separate supply, such
as directly from the battery or another DC supply.
This diagram illustrates the connection of a 4-20 mA sensor to Analog Input 3, with half the typical
resistor:
Page 80 of 131
LUM0008AG Rev Sep-2015
This document is the property of FreeWave Technologies, Inc. and contains proprietary information owned by
FreeWave®. This document cannot be reproduced in whole or in part by any means without written permission from
FreeWave Technologies, Inc.
Содержание FGR2-IO-IOE
Страница 131: ......