10
units are feet of water with non-zero field calibration offset
11
units are psi with non-zero field calibration offset
12
units are kilopascals with non-zero field calibration offset
13
units are cm of water with non-zero field calibration offset
14
units are meters of water with non-zero field calibration offset
15
units are mm of water with non-zero field calibration offset
19
user units with non-zero field calibration offset
(psi + field calibration offset)
∗
user scale + user offset
set by XE or XS set by XUU set by XUU
If the unit has had its calibration modified at a standards lab other than at Sutron, then the value
returned for u will have one hundred (100) added to it. In other words, if the XC command has
been utilized to set the calibration scale factor to other than 1 or the calibration offset factor to other
than 0 then 100 will be added to the units indicator.
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 non-concurrent Measurement with CRC-16 (MC command)
The command to tell the AccuBubble to make a non-concurrent measurement with a CRC-16 check
on the data is:
aMC!
where a is the address character, and MC is the command to
make a non-concurrent measurement with a CRC-16
The non-concurrent measurement with CRC-16 command was first defined in version 1.3 of the
SDI-12 specification. Therefore the data recorder will have to be SDI-12 version 1.3 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 AccuBubble will respond with
attt2
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 responds with a service request
a
where a is the address character
Note that you still do not have any data from the AccuBubble. 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 AccuBubble will reply with two values in the format:
Bringing the Benefits of Real-Time Data Collection to the World
Sutron Corporation, 21300 Ridgetop Circle, Sterling, Virginia 20166-6520
13
Summary of Contents for Accububble 56-0131-50-1
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