1、 The purpose of the instrument
The PHB-4 portable acidity meter is a 31/2-digit LCD digital display acidity meter (hereinafter referred to as the instrument). The instrument is suitable for sampling and measuring the acidity (pH value) and electrode potential (mV value) of aqueous solutions in laboratories such as research laboratories, pharmaceuticals, factories, chemical engineering, environmental protection, and mining sites. It is easy to carry and not only practical for laboratories, but also for field production sites. If equipped with appropriate ion selective electrodes, it can serve as a terminal indicator for potentiometric titration analysis.
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2、 Technical characteristics of the instrument
1. Main parameters of the instrument
(1) Measurement range: pH range: 0-14.00pH mV range: 0-1400mV (automatic polarity display)
(2) Accuracy: PH range: 0.02pH ± 1 character mV range: ± 0.2% (F.S) ± 1 character Matching accuracy: 0.02pH/3PH
(3) Input impedance: 1012Ω?
(4) Zero drift: ± 0.02pH/2h
(5)31/2-digit LCD display
(6) Solution temperature compensation range: 0-60 ℃ (manual)
(7) Instrument dimensions: Length 180, Width 80, Height 40
2 Instrument characteristics
(1) Environmental temperature: 5~+40 ℃;
(2) Relative humidity: not exceeding 85%
(3) Temperature of the tested solution: 0-60 ℃
(4) One 9V, 6F22 battery