Calibration and adjustment commands

Calibration and adjustment commands - GMP252

GMP252 User Guide

Document code

M211897EN

Revision

Language

English

Product

GMP252

Document type

User guide

CAUTION Before using the calibration and adjustment commands, read through Calibration and adjustment. Make sure that the environmental compensation settings of the probe are properly set for your calibration environment; see Environmental compensation.

Table 1. adate command
Syntax	Description
adate<cr>	Show CO₂ factory adjustment date.
Example: `adate Adjustment date : 20150420`

Table 2. atext command
Syntax	Description
atext<cr>	Show CO₂ factory adjustment information.
Example: `atext Adjusted at Vaisala/Helsinki`

Table 3. cdate command
Syntax	Description
cdate<cr>	Show calibration date.
cdate [yyyymmdd]<cr>	Set a new calibration date. yyyymmdd = Year (yyyy), month (mm) and day (dd) of calibration
Example: `pass 1300 cdate Calibration date : 20150220`
Example (set a new calibration date to June 30, 2015): `cdate 20150630 Calibration date : 20150630`

Table 4. ctext command
Syntax	Description
ctext<cr>	Show calibration information text.
ctext [text]<cr>	Set a new calibration information text to be shown after the automatic text "Calibrated at".
Example: `pass 1300 ctext Calibrated at 500 ppm in lab`
Example (set a new information text): `ctext 0/1000 by NN Calibrated at 0/1000 ppm by NN`

Table 5. cco2 command
Syntax	Description
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 1000 ppmCO₂) -hi = Adjustment at high concentration (over 2000 ppmCO₂) 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): `pass 1300 cco2 1.Ref. point low 0 1.Meas. point low 0 2.Ref. point high 3000 2.Meas. point high 3000 Gain : 1.0000 Offset : 0.0000`
Example (perform a 1-point calibration): Let the probe stabilize in the desired CO₂ concentration (here: 500 ppmCO₂). Enter the calibration commands: `pass 1300 cco2 -lo 500 OK cco2 -save OK` Enter a new calibration date and information text: `cdate 20160325 Calibration date : 20160325 ctext 500 ppm in lab Calibrated at 500 ppm in lab`
Example (perform 2-point calibration): Let the probe stabilize in the desired low CO₂ concentration (here: 200 ppmCO₂). Enter the calibration commands: `pass 1300 cco2 -lo 200 OK cco2 -save OK` Let the probe stabilize in the desired high CO₂ concentration (here: 3000 ppmCO₂). Enter the calibration commands: `pass 1300 cco2 -hi 3000 OK cco2 -save OK` Enter a new calibration date and information text: `pass 1300 cdate 20160425 Calibration date : 20160425 ctext 200/3000 ppm Calibrated at 200/3000 ppm`