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English Translations » 化工分析圈 » 【Daily Question】2018.7.28

【Daily Question】2018.7.28

2018-07-28View Original

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Multiple-choice question: When calibrating the acidity meter, if the regulator can set the pH to 6.86 but not to 4.00, possible reasons are ( ) A. Open circuit at the instrument’s input terminal; B. Failed electrode; C. Damaged slope potentiometer; D. Failed DMV-PH button switch. BC
Reply #22018-07-28
When calibrating the acidity meter, if the controller can set the pH to 6.86 but not to 4.00, the possible reasons are (BC): A. An open circuit at the instrument’s input terminal; B. Failed electrode; C. Damaged slope potentiometer; D. Failed DMV-PH button switch
Reply #32018-07-28
B electrode failed; C slope potentiometer is damaged
Reply #42018-07-28
 Dmv－PH push button switch failed
Reply #52018-07-28
B electrode failed; C slope potentiometer is damaged

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Translated at 2026-07-23 11:45:11

Original: https://bbs.hcbbs.com/thread-2032701-1-1.html

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