product name:
Steel corrosion meterone
Steel corrosion meter
Instructions
1. Warm-up: Turn on the power and warm up for 15 minutes to keep the instrument in a stable state.
2. Calibration: Refer to the zero calibration of the ammeter. Turn on the power, warm up for 15 minutes, press
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calibration
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Key (11)
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One pass
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, switch (13) placed
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Broken
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Position, current range (2) is placed in 2 mA, if the ammeter (3) display is not 0.000 adjustable on the front panel
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Zeroing
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Key (12) makes the ammeter display 0.000.
3. Electrode open circuit potential measurement: that is, the electrode is measured for natural corrosion potential, and the lead of the electrode input (1) is connected to the electrolytic cell system.
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On-off
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Switch (13) placed
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Broken
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Bit, turn on the power (14), turn on the power switch (15), press it for 15 minutes and then press
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Constant potential
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Key (8), current key (11)
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Reference
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Key (5)
The digital meter (4) shows the open circuit potential of the reference electrode relative to the research electrode, that is, the natural corrosion potential of the electrode, but the opposite sign.
4. Constant potential polarization measurement: after the natural corrosion potential measurement is completed according to the above item 3, then press
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given
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Key (5), at this time, the given potential value displayed by the digital table (4), adjust the coarse adjustment key (6) and the fine adjustment key (7) of the constant potential given potential, so that the digital meter (4) displays the given potential The value is equal to the natural corrosion potential value.
Steel corrosion meter
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On-off
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Off (13) placed
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through
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s position
At this time, the circuit of the auxiliary electrode is turned on, the instrument starts to operate at a constant potential, and the reference potential is immediately equal to the given potential, and the constant potential polarization measurement starting from the natural corrosion potential can now be performed. Steady-state potentiostatic polarization measurement: press
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given
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Key (5), according to the experimental specification of the constant potential polarization measurement work, adjust the coarse adjustment key (6) and fine adjustment key (7) of the constant potential given potential, so that the digital potential meter (4) is displayed as the specified potential value. At this time, if you press
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Reference
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Key (5), the digital potential meter (4) shows that the reference potential should be equal to the given potential. After maintaining the experimentally specified polarization time at this given potential value, read from the digital ammeter (3). Polarized current value. Or according to the experimental regulations, the polarization is maintained at the given potential value, and the corresponding polarization current value is read after the current value displayed by the digital ammeter (3) is relatively stable.
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