Thermo Scientific Orion Star A216, Reference Manual

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Thermo Scientific Orion Star A216 Benchtop and Star A326 Portable pH/RDO/DO Meter Reference Guide
Appendix 1 Advanced Meters Features
Automatic pH Buffer Recognition Feature
5IF0SJPO4UBS"BOE4UBS"TFSJFTQ)NFUFSTBSFDBQBCMFPGBVUPNBUJDBMMZSFDPHOJ[JOHQ)
BOECVGGFSTPSQ)BOECVGGFSTEVSJOHBQ)DBMJCSBUJPOEFQFOEJOHPOUIFQ)CVGGFS
TFUUIBUJTTFMFDUFEJOUIFTFUVQNFOV%VSJOHBDBMJCSBUJPOUIFNFUFSVTFTUIFTFMFDUFECVGGFSTFUBOEUIFSBXN7
reading of the pH electrode in the buffer to recognize and display the buffer value at the measured temperature. The
SBXN7SFBEJOHPGUIFQ)FMFDUSPEFJOUIFCVGGFSNVTUCFBCPVUœN7GSPNUIFUIFPSFUJDBMN7SFBEJOHPGUIFCVGGFS
in order for the meter to automatically recognize the buffer.
USA pH Buffer Set DIN pH Buffer Set
Buffer mV Range Buffer mV Range
UPN7 UPN7
UPN7 UPN7
UPN7 UPN7
UPN7 UPN7
UPN7
Testing a pH Electrode for Automatic Buffer Recognition
5PWFSJGZUIBUUIFSBXN7SFBEJOHPGUIFQ)FMFDUSPEFJOVTFJTœN7GSPNUIFUIFPSFUJDBMN7SFBEJOHPGUIFCVGGFS
and therefore verify that the pH electrode in use is capable of performing automatic buffer recognition, perform the
GPMMPXJOHQSPDFEVSF
1. Set the measurement mode to mV. Prepare the pH electrode according to the instructions in the pH electrode
user guide.
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CVGGFSBUBQQSPYJNBUFMZ¡$
8BJUGPSUIFNFBTVSFNFOUUPTUBCJMJ[FBOESFDPSEUIFN7WBMVFPGUIFQ)CVGGFSXIFOUIFNFUFSJOEJDBUFT
UIBUUIFNFBTVSFNFOUJTTUBCMF5IFSFBEUZQFTFMFDUFEJOUIFTFUVQNFOVXJMMEFUFSNJOFIPXUIFN7
measurements are displayed by the meter.
3FNPWFUIFQ)FMFDUSPEFGSPNUIFQ)CVGGFS
3JOTFUIFQ)FMFDUSPEFXJUIEJTUJMMFEXBUFSCMPUJUESZXJUIBMJOUGSFFUJTTVFBOEQMBDFUIFQ)FMFDUSPEFJOUPBQ)
CVGGFSBUBQQSPYJNBUFMZ¡$
8BJUGPSUIFNFBTVSFNFOUUPTUBCJMJ[FBOESFDPSEUIFN7WBMVFPGUIFQ)CVGGFSXIFOUIFNFUFSJOEJDBUFT
that the measurement is stable.
5IFN7SFBEJOHPGUIFQ)FMFDUSPEFJOQ)CVGGFSTIPVMECFJOUIFSBOHFPGUPN7BOEUIFN7
SFBEJOHPGUIFQ)FMFDUSPEFJOQ)CVGGFSTIPVMECFJOUIFSBOHFPGUPN7*GUIFN7SFBEJOHTPGUIF
pH electrode are in the correct ranges, the pH electrode is capable of performing automatic buffer recognition.
*GUIFN7SFBEJOHTPGUIFQ)FMFDUSPEFBSFOPUJOUIFDPSSFDUSBOHFTUIFWBMVFTPGUIFQ)CVGGFSTXJMMOFFEUPCF
manually entered during a pH calibration.