Acid meter common faults and troubleshooting methods

9.document.writ''acidity document.writ'<\\/a>' panel temperature, slope or correction adjustment knob adjustment failure; check the potentiometer connected to the adjustment knob is damaged

The indicator does not light. 1. Turn on the power.

1 If the document.writ''PH meter document.writ'<\\/a>' has a voltage output, check if the indicator light is burnt out;

2 If the document.writ'' acidity meter document.writ'<\\/a>' has no voltage output, check if the insurance ALL is melted;

3 If the safety wire is not blown, check if the transformer of the instrument burns out due to a partial short circuit.

2. Power on the instrument head indicates unstable or the pointer is not positioned

Observe if there is any foreign matter on the coil. 1 Open the document.writ'' acidity meter document.writ'<\\/a>' panel to check if the meter head is ac. ;

2 Check that the instrument case is grounded.

The instrument head indicates a large swing; open the instrument panel to check whether the input parallel welding resistance in front of the meter head is firm. 3. The power is not connected.

4. The digits displayed after the digital pH meter is energized are unstable or drifting.

1 Check that the document.writ''PH meter connectors are secure;

2 Check if the input and output voltage of the instrument is stable;

3 Check if the circuit board of the instrument is eroded;

4 Check if the op amp in the instrument's amplifier circuit is burnt out.

5. The output indicator of the acidity meter is not accurate; the detection method is incorrect or the temperature and slope adjustment points are incorrect.

6. The two standard solution tests cannot be positioned with each other; check that the specification signal generator is not accurate.

However, when the high resistance is connected, the value is out of tolerance. 7. The pH meter works properly when input directly.

1 Check if the filter capacitor of the instrument is broken down;

2 Check if the input resistance of the instrument field effect bamboo is low;

3 Check the instrument circuit board for moisture or erosion.

8. Digital lack of strokes displayed after powering up the digital pH meter

1 The connector of the instrument is not in good contact;

2 instrument.writ'' acidity meter document.writ'<\\/a>' digital display is damaged.

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