Element Analyzer Faults and Solutions

1. When the instrument is in the standard state, only the zero value can be displayed. There is no obvious effect when adjusting the sensitivity knob: 1) Check whether the light source of the colorimetric section is damaged or not; (2) Check whether the colorimetric section and the main signal line are loose.

2. The percentage of the voltage displayed by the instrument in the state of the sample changes greatly and is unstable: (1) Check the voltage of the power supply, the range of variation should not exceed 200~240V (2) Change the light source of the marking channel; (3) Case Reliable grounding. (4) The user grid signal is not pure.

3. The middle two digits of the instrument's digital display indicate "99". The reason is that the output signal of the colorimetric part is negative. The normal output voltage is 0-2V. The multimeter can be used to check the signal output of the colorimetric part.

4, zero input can not go in (1) instrument zero instability, just after the boot will have this phenomenon; (2) after the instrument door light, the output zero is not between 2.00-8.00, can open the instrument lid to adjust the corresponding The trimmer potentiometer (W2 or W4 or W6) causes the zero point to be displayed as 4.00 or so; (3) The instrument shows an abnormality and the button does not play any role; this is mostly caused by external power supply interference, just turn off the power switch and turn it on again. .

5, printing is not working properly When the printer is working normally, the green indicator light SEL on the print panel does not light, the printer does not print, press the SEL key once, you can print. When the instrument is shipped from the factory, the first curve of each channel is initialized, that is, input a test data. If there is no curve data stored in the curve number of the instrument, the printer will have a wrong printing format. At this time, just input the curve data to the curve number. When the instrument is used for the first time, the corresponding element symbol should be placed according to the tested element. Otherwise, “?” is printed on the position of the element symbol. The trace is not clear, mostly due to the dryness of the ribbon, and the color needs to be replaced. band.

6. The C value of the content displayed by the instrument varies greatly during the measurement. This is due to the change in the temperature of the injected sample liquid. The chemical balance is conditional. One of the most significant is the temperature change. When the hot liquid is poured into the cold cuvette, the temperature will drop and the chemical reaction will rebalance, so the display data will change. The processing method: during the rapid determination, the data should be printed within a certain time after the liquid is poured, and the standard sample should be printed. The waiting time during the test is the same, that is, the temperature condition when establishing the curve should be consistent with the temperature condition of the test sample.