Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 111
The only reason to change X-Link's Timeout setting is if there are SDI-12
sensors connected.
The RS-485 bus used to connect to Seametrics is shared with the SDI-12 bus. As
long as X-Link is listening for data from the Seametrics flow meter, it cannot
collect data from any SDI-12 sensors.
X-Link will log data captured from the Seametrics flow meter at the user set
Measurement Interval. If the Seametrics flow meter does not produce any data
during a Measurement Interval, X-Link will use the last data it received from the
Seametrics flow meter. This situation can happen if X-Link's Measurement
Interval is shorter than Seametrics' Logging Interval and there is no flow.
To have X-Link collect data from a Seametrics flow meter and an SDI-12 sensor,
there are several options:
If data from both sensors can be collected less frequently than every 980
seconds (which is a bit more than 16 minutes), no additional considerations
are needed.
If more frequent data collection is needed, please follow these steps:
o Change the Seametrics Logging Interval to be a bit shorter than your
required data collection interval. X-Link cannot help you change this
setting - a Seametrics program will have to be used.
o When setting up X-Link for the Seametrics measurement, change
Timeout and Measurement Interval settings to match the Seametrics
Logging Interval.
o Setup X-Link's SDI-12 measurement normally. Just make sure the
Measurement Interval of the SDI-12 measurement is longer than the
Timeout of the Seametrics measurement.
The example below shows a valid X-Link setup that will measure both Seametrics
and an SDI-12 sensor every five minutes. For the setup to work, the Seametrics
Logging Interval setting must be set to four minutes.
M1 Timeout is 250 seconds, which is 4 minutes and 10 seconds. The number is
based on the Seametrics Logging Interval (4 minutes). A comfortable padding of
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