Model HC2S3 Temperature and Relative Humidity Probe
4
4.
After selecting the sensor, click at the left of the screen on
Wiring
Diagram
to see how the sensor is to be wired to the datalogger. The
wiring diagram can be printed out now or after more sensors are added.
5.
Select any other sensors you have, then finish the remaining
Short Cut
steps to complete the program. The remaining steps are outlined in
Short
Cut
Help
, which is accessed by clicking on
Help | Contents |
Programming Steps
.
6.
If
LoggerNet
,
PC400
,
RTDAQ
, or
PC200W
is running on your PC, and the
PC-to-datalogger connection is active, you can click
Finish
in
Short Cut
and you will be prompted to send the program just created to the
datalogger.
7.
If the sensor is connected to the datalogger, as shown in the wiring
diagram in step 4, check the output of the sensor in the datalogger support
software data display to make sure it is making reasonable measurements.
5. Overview
The HC2S3 is a digital probe with linear voltage outputs for temperature and
humidity and a UART serial interface. Its voltage signals can be measured with
two single-ended or two differential inputs on the datalogger. Interfacing with
the UART is described in Appendix
(p. E-1)
The digital-to-analog converter used to generate the analog output signals has
16-bit resolution. Temperature range and other default settings can be changed
as described in Appendix
(p. D-1)
.
A cable ordered through Campbell Scientific for the HC2S3 includes an
internal voltage regulator that applies 3.3 V to the probe from a 5 to 24 V
power source. 12V power is recommended for use with Campbell Scientific
dataloggers. When minimizing power use is important, power can be switched
on and off for the measurement, provided there is a three-second warm-up
delay. Switching power avoids constant current flow through datalogger