Sutron Accububble 56-0131-50-1, Руководство по эксплуатации и техническому обслуживанию

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In most cases, you will not set up the recorder to store this units identifier. It is provided in
response to the standard measure command to eliminate confusion as to the computation used to
come up with the final value.
Making a Concurrent Measurement (C command)
The command to tell the sensor to make a concurrent measurement is:
aC! where a is the address character, and C is the command to
make a concurrent measurement
The concurrent measurement command was first defined in version 1.2 of the SDI-12 specification.
Therefore the data recorder will have to be SDI-12 version 1.2 or higher compliant before it can be
expected to issue this command and automatically handle the reply to collect data. You can also
issue the command yourself. In reply, the sensor will respond with
attt02 acknowledging it is address a and indicating that after ttt
seconds are allowed for the measurement, 2 values can be
collected.
When the measurement is complete, the sensor does NOT issue a service request Note: this is
different from the M command.
To request the data after a measurement,
aD0! where a is the address character and D0 is the command to
retrieve measured data. Note: the number zero follows D,
not the letter O.
In this case, the sensor will reply with two values in the format:
avu
where a is the address, v is the data value and u indicates the
units. Both v and u have the format of a polarity sign (
+
or
−
)
followed by up to seven digits, including a decimal point.
The u indicates the units of the measurement. When u is 0, the value has units of feet of water.
When u is 1, the units are psi. When u is 9, the units depend on a user entered slope and offset. u
can also take on additional values after a field calibration has been performed. The following table
summarizes all the values of u.
0 units are feet of water
1 units are psi
2 units are kilopascals
3 units are cm of water
4 units are meters of water
5 units are mm of water
9 units depend on user-entered scale and offset.
If the field calibration offset is non-zero, then one of the following values of u will be returned:
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