March 29, 2024

Elemental Analyzer Troubleshooting

QL-BS3 series microcomputer three-element high-speed analyzer is a three-channel photoelectric colorimetric analyzer for multi-element analysis. Based on advanced technologies at home and abroad, this instrument adopts advanced technologies such as “Intelligent Dynamic Tracking” and “Non-linear regression of the standard curve” for the first time, making the routine adjustment of traditional colorimeters and the establishment of standard curve methods. Fundamental changes. Make this instrument among the ranks of high-end analytical instruments.

1, the instrument can only display the zero value in the standard state, adjust the sensitivity knob has no obvious effect:

(1) Check whether the LED in the colorimetric section of the lamp room is damaged;

(2) whether the color part and the host signal line are loose;

2. The percentage of the voltage displayed when the instrument is calibrated changes greatly and is unstable:

(1) Check the power supply voltage, the change range is 187 ~ 242V;

(2) Replace the light source LED of the corresponding channel;

(3) The housing is reliably grounded.

3、The middle two digits of the elemental analysis instrument show "99"

The output signal of the colorimetric section shows a negative value. The normal output voltage is 0-2V. Use a multimeter to check the signal output jacks of the colorimetric section 1-6, 3-6, and 5-6. The 6th pin is the common terminal and the instrument is turned on. Cover, adjust the zero potentiometer (W1 or W3, W5) with a small screwdriver to make the output a positive voltage.

4, zero loss can not go in

(1) The instrument zero point is unstable, and this phenomenon will occur when the instrument is turned on;

(2) After the instrument door block light, the output zero point is not between 2.00 and 8.00, can open the instrument cover to adjust the corresponding trimmer potentiometer (W2 or W4, W6), so that the zero point is displayed as about 4.00;

(3) The instrument is placed in the state of an external colorimeter, and the prompt is always flashing slowly. At this time, it is only necessary to modify it according to the instruction in Article 8 of Appendix II.

5, elemental analysis instrument shows abnormal, the key can not play any role

This is mostly caused by external power supply interference. Simply turn off the power switch and turn it on again.

6, the determination of the instrument shows a large change in the content of C value

This is due to the change in the temperature of the injected sample liquid. The chemical equilibrium is conditional. The most significant one is the temperature change. When the hot liquid is poured into the cold cuvette, the temperature will drop and the chemical reaction will rebalance. , it shows that the value has changed, the processing method:

For rapid determination, the data should be printed within a certain time after the liquid is poured, and the time for waiting for the test sample to be used as the standard sample should be the same, that is, the temperature condition when the curve is established should be consistent with the temperature condition of the test sample.

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