Analisis dan eliminasi dari umum kesalahan dari PH meter
Dalam praktis kerja% 2c the aging of peralatan komponen% 2c tidak tepat operasi metode dan tidak stabil daya pasokan tegangan kemauan semua timbal ke kegagalan PHS 7b{0% 7d% 7dB-S pH meter% 2c yang kemauan membawa kesulitan ke ke asam ke pengamatan data itu perlu untuk pengamat untuk diagnosis dan menganalisis kegagalan dalam waktu dan akurat% 2c so as untuk memastikan the normal pengembangan asam hujan pengamatan bisnis.
(1) The power supply is turned on, but the possible reasons and treatment methods are not shown:
A. the fuse is broken and should be replaced;
B. If the power supply or transformer is rusak, it should be repaired or replaced;
C. if the instrument circuit fails, it should be sent for repair.
(2) The pH value cannot be adjusted to 7.00 by "positioning". Possible reasons and treatment methods:
A. Kapan the suplemen cairan of the komposit elektroda mengering up, add 3M kalium klorida larutan atau mengganti elektroda;
B. The komposit elektroda gagal dan harus menjadi diganti;
C the internal potensiometer adalah rusak dan harus menjadi diperbaiki atau diganti.
(3) If the "slope" cannot be adjusted to pH 4.00 or pH 9.18, the possible reasons and treatment methods are as following:
A. The komposit elektroda is aged and its performance is degraded, so it should be replaced;
B. The internal potensiometer adalah rusak dan harus menjadi dikirim untuk perbaikan dan penggantian.
(4) Kapan mengukur 4)pH nilai, the membaca adalah tidak stabil, its mungkin alasan dan pengobatan metode:
A. if the k value of the water sample is too low (e.g. lower than 10μS/cm), the equilibrium time shall be appropriately prolonged;
B. The internal resistance of the composite electrode is too high, and its service life has reached, so it should be replaced;
C. If the composite electrode plug (seat) is damp or polluted, it should be wiped with 95% alcohol after shutdown and dried before use;
D. If the power supply voltage is unstable, or the grounding wire touches * *, turn off the power supply and weld the grounding wire firmly, and then turn on the power supply for measurement after the voltage is stable.
(5) During "automatic" compensation, the number overflows or the displayed value is unstable, the possible reasons and treatment methods:
B itu suhu kompensasi pemilih sakelar adalah rusak dan harus dikirim untuk perbaikan atau penggantian% 3b
