Campbell BaroVUE 10, Product Manual

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Table 8-2: BaroVUE 10 SDI-12 commands
SDI-12 command
(a is the sensor address)
Values Returned
or Function
Units
a
M!
, a
C!
, a
MC!
, or a
CC!
1. Pressure
2. Temperature
3. Quality Metric
1. hPa (millibar)
2. °C
3. N/A
a M1! , a C1! ,
a
MC1!
, or a
CC1!
1. Pressure
2. Temperature
3. Quality Metric
1. kPa
2. °C
3. N/A
a M2! , a C2! ,
a
MC2!
, or a
CC2!
1. Pressure
2. Temperature
3. Quality Metric
1. in Hg
2. °F
3. N/A
a M3! , a C3! ,
a
MC3!
, or a
CC3!
1. Pressure
2. Temperature
3. Quality Metric
1. mm Hg
2. °C
3. N/A
a M4! , a C4! ,
a
MC4!
, or a
CC4!
1. Pressure
2. Temperature
3. Quality Metric
1. psia
2. °F
3. N/A
?!
Returns the SDI-12 address
8.3 Quality metric
For each pressure value, the BaroVUE 10 can output a number known as the quality metric (QM).
The QM indicates the quality in the pressure measurement. For more information about the QM,
refer to the following table.
Table 8-3: Quality metric numbers
QM range Description Comments
> 6 Sensor freshly calibrated
5 to 5.99 Sensor working well
The sensor card is working well. All elements agree
to a high level.
BaroVUE™10 Digital Barometer 17