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Manual revision 010
Section 4: Deploying and Operating SBE 52-MP
SBE 52-MP
Engineering Units in Binary (but raw oxygen) –
DDBs,f and DABs,f Command
Data is output in the order listed, with no spaces or commas between
parameters. Shown with each parameter are the number of digits, and how to
calculate the parameter from the data (use the decimal equivalent of the binary
data in the equations).
1.
2.
3.
4.
Conductivity (mmho/cm) = (ccc / 10,000) – 0.5
If ccc < 0.5 decimal, ccc is set to 00000 (hex).
If ccc > 95.0 decimal, ccc is set to FFFFF (hex).
Temperature (°C, ITS-90) = (ttt / 10,000) – 5
If ttt < -5 decimal, ttt is set to 00000 (hex).
If ttt > 35.0 decimal, ttt is set to FFFFF (hex).
Pressure (decibars) = (ppp / 100) – 10
If ppp < -10 decimal, ppp is set to 00000 (hex).
If ppp > 7000 decimal, ppp is set to FFFFF (hex).
Optional Oxygen (Hz) = oo (= 0 if SetDOInstalled=N)
Example: example scan = ccctttpppoo =
0000010111001001100011010000000011100010110101100000001010001110100011100011000001010110
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Conductivity = ccc = 000001011100100110001101 (379277 decimal);
conductivity (mmho/cm) = (379277 / 10,000) – 0.5 = 37.4277
Temperature = ttt = 000000001110001011010110 (58070 decimal);
temperature (°C, ITS-90) = (58070 / 10,000) – 5 = 0.8070
Pressure = ppp = 000000101000111010001110 (166566 decimal);
pressure (decibars) = (167566 / 100) - 10 = 1665.66
Oxygen = oo = 0011000001010110 (12374 decimal)
oxygen (Hz) = 12374
Real-Time Data
Each line of data is ended with a carriage return and line feed.
Autonomous Sampling with OutputPressure=Y (real-time pressure in
engineering units) or TFP command
Shown is the number of digits and the placement of the decimal point. Leading
zeros are suppressed, except for one zero to the left of the decimal point.
Pressure (decibars) = ppppp.pp
Example: example scan = ppppp.pp = 1665.66
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Pressure (decibars) = ppppp.pp = 1665.66
OutputSN=Y (real-time sample number)
Sample number = nnnnn
Example: sample number = nnnnn = 16689
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