Before calibrating GMP231 using serial line commands, see Calibration and adjustment. Make sure that the environmental compensation settings of the GMP231 are properly set for your calibration environment. |
Syntax | Description |
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cco2<cr> | Show current user adjustment status. |
cco2 -lo [co2]<cr> cco2 -hi [co2]<cr> |
Perform a 1-point (only either low or high concentration) or 2-point
(both low and high concentrations) calibration and adjustment. -lo = Adjustment at low concentration (under 2 %CO2) -hi = Adjustment at high concentration (over 2 %CO2) co2 = CO2 concentration reference in ppm |
cco2 -save<cr> | Save the currently entered adjustments. Successfully saving the adjustment clears the calibration date (cdate command) and calibration text (ctext command) that have been stored in the probe. Use those commands to enter a new calibration date and text. |
cco2 -cancel<cr> | Cancel currently entered adjustments. |
cco2 -reset<cr> | Clear user adjustments. |
Example (show current user adjustment status – no adjustment done):
Example (one-point adjustment in 5 % concentration (50000 ppm)):
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Syntax | Description |
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CDATE<cr> | Show calibration date. |
CDATE [yyyy mm dd]<cr> |
Set a new calibration date.
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Example (show currently stored calibration date):
Example (set calibration date to 2014-03-10):
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Syntax | Description |
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CTEXT<cr> | Show calibration information text. |
CTEXT [text]<cr> |
Calibration information text string, max 19 characters. If you want to use spaces in the string, enclose the text in quotes. |
Example (shows the text “Calibrated at” followed by the currently stored calibration text):
Example (set calibration text to “Lab_1”):
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Syntax | Description |
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CT [temp]<cr> |
Perform an offset correction to the internal temperature measurement. temp = correct temperature in degrees Celsius (°C). |
CT [-reset]<cr> | Clear the offset adjustment from internal temperature measurement. |
Example (adjust the internal temperature measurement to 23 °C at the current conditions):
Example (clear the offset adjustment from internal temperature measurement):
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Syntax | Description |
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CP [pressure]<cr> |
Perform an offset correction to the internal pressure measurement. pressure = Correct pressure in hectopascals (hPa). |
CP [-reset]<cr> | Clear the offset adjustment from internal pressure measurement. |
Example (adjust the internal pressure measurement to 990 hPa at the current conditions):
Example (clear the offset adjustment from internal pressure measurement):
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