OTT PLS 500, Руководство по эксплуатации

Страница: 27 / 56

Command Response Description
aR1! a<value1><value2><value3>
…
…
<value4><value5><value6>
…
…
<value7><value8><CR><LF>
The OTT PLS 500 continuously measures level/pressure and
temperature and determines statistical values. This command
permits to retrieve measurement results even without the com-
bination of commands
aM1! / aD0! … aD2! ; for details, see
command aD0! … aD2! after aM1! .
Requires measurement type "continuous measurement";
extended command
aXXC<value>!
aRC1! a<value1><value2><value3>
…
…
<value4><value5><value6>
…
…
value7><value8><CRC><CR><LF>
The OTT PLS 500 continuously measures level/pressure, tem-
perature, determines statistical values and requests a CRC
value (Cyclic Redundancy Check). This command permits to
retrieve measurement results even without the combination of
commands
aM1!
/
aD0!
…
aD2!
; for details, see command
aD0!
…
aD2!
after
aM1!
. Requires measurement type
"continuous measurement"; extended command
aXXC<value>!
aM2! atttn<CR><LF>
and after 0/1 … 60 seconds
a<CR><LF>
Start measurement – including meta data
a – sensor address
ttt – time in seconds until the sensor has determined
the measurement result
response OTT PLS 500: 0/1 … 60 seconds
1)
n – number of measured values
response OTT PLS 500: 9
aD0!
a<value1><value2><value3> …
… <CR><LF>
Send data (after aM2! )
a – sensor address
<value1> – relative humidity in the probe housing
measured value format: pbb.ee [
% rH
]
<value2> – dew point in the probe housing
measured value format: pbb.ee [°C]
<value3> – current sensor orientation
measured value format: pbbb [°]
aD1! a<value4><value5><value6>
…
…
<CR><LF>
Send data (after
aM2!
)
a
– sensor address
<value4>
– stored sensor orientation during installation
measured value format:
pbbb
[°]
<value5> – temperature value of pressure sensor
measured value format: pbb.ee [°C]
<value6> – temperature of internal humidity sensor
measured value format: pbb.ee [°C]
aD2! a<value7><value8><value9>
…
…
<CR><LF>
Send data (after
aM2!
)
a
– sensor address
<value7>
– pressure value of pressure sensor
measured value format:
pbbbb.ee
[mbar]
<value8>
– standard deviation of pressure value of
pressure sensor
2)
measured value format:
pbbbb.ee
[mbar]
<value9>
– device status; see
aD2!
after
aV!
aMC2! atttn<CR><LF>
and after 0/1 … 60 seconds
a<CR><LF>
Start measurement and request CRC (Cyclic Redundancy
Check); for details, see command
aM2! .
The response to the following aD0! … aD2!
command is extended by a CRC value: a<valueX>
<valueX><valueX><CRC><CR><LF>
1) depending on the set averaging time; extended command aXXM<value>!
In the measurement type "continuous measurement" the time is always 0 seconds (with the exception of the first interval after the start)!
2)
determined from 2 … 238 single measurements of a measurement interval (see command
aXXC!
)
27