Xylem H-310 - Manual (Page 18)

3-2 Operation
H-310
3.2 Reading Data from the H-310
Since data recorders differ widely, you must prepare your data recorder to receive and display the
H-310 data according to the recorder manufacturer's directions.
User requirements also differ. Users may program their data recorders individually for such
variables as sampling rates.
The following information is provided to help you customize your system according to the data
recorder you will use and your data requirements:
SDI-12. Program your data recorder to measure and record two values (pressure
and temperature) via the SDI-12 port. Your data recorder must issue an
M command, as explained in Appendix C. (Appendix C and
Appendix D give the command and response protocol used by SDI-12
W
ATER LOG ® models.)
RS-232. Program your computer or data recorder to transmit a "break," then
record the resulting ASCII string sent by the sensor. The term "break" is
defined as a "marking" condition on the data line for a minimum of
8.5 ms. This definition can be found in the SDI-12 standard
specification.