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Phone
15000937857
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Address
Room 2066, Building 3, No. 612 Shangchuan Road, Pudong New Area, Shanghai
Product Categories
Shanghai Fenglin Electronic Technology Co., Ltd
Desktop digital pH meter PHS-25C
NegotiableUpdate on 04/13
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Overview
Desktop digital pH meter PHS-25C
Product Details
overview
PHS digital pH meter is a high-precision instrument used for laboratory pH measurement, with dual functions of pH and mV. Using E201 composite electrode, the reaction is fast and the stability is good. This series of instruments is widely used in many disciplines and fields such as scientific research, teaching, agriculture, etc.
Working principle
The hydrogen ion activity in the aqueous solution is converted into electrical energy by a sensor (pH composite electrode), which is input to the instrument. After being operated by an operational amplifier and current detector, the electrical energy is converted into digital display through A/D. The above electrical energy conforms to the Nernst equation:
Technical parameters and working conditions
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product name |
PHS-3C |
PHS-2C |
PHS-25 |
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function |
pH/mV |
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measuring range |
(0.00～14.00) pH (0～±1999)mV |
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resolution |
0．01 pH 1mV |
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accuracy |
±0．01 Ph 1%F· S |
±0．02 Ph 1%F· S |
±0．05 Ph 1%F· S |
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temperature compensation |
（0～60）℃ |
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stability |
±0．01 pH/12h |
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ambient temperature |
(5～45)℃ |
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relative humidity |
≤85%RH |
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Temperature of the tested solution |
(0～60)℃ |
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power supply |
AC (220V ± 22) V (50 ± 0.5) Hz without significant vibration and strong magnetic field interference |
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