TJ270-30a Infrared SpectrophotometerThe main function of the interferometer is to split the light emitted by the light source into two beams, form a certain optical path difference, and then combine them to produce interference. The resulting interferogram function contains all the frequency and intensity information of the light source. By using a computer to perform Fourier transform on the interferogram function, the frequency distribution of the intensity of the original light source can be calculated. It overcomes the disadvantages of low resolution, low light energy output, narrow spectral range, and long measurement time of dispersive spectrometers. It can not only measure the absorption and reflection spectra of various gas, solid, and liquid samples, but also be used for short-term chemical reaction measurement. At present, infrared spectrometers have wide applications in fields such as electronics, chemical engineering, and medicine.

When the TJ270-30a infrared spectrophotometer cannot work properly, you can first activate the instrument's self diagnostic function to check the working condition of certain components of the instrument, or refer to the instrument's user manual for troubleshooting based on abnormal phenomena of the instrument.

If it is found that the hardware of the TJ270-30a infrared spectrophotometer is damaged, a professional maintenance engineer should be invited to the site for handling. If the cause of the fault cannot be identified, it is also necessary to communicate with the maintenance engineer in a timely manner and transmit the instrument's fault information, so that the engineer can roughly determine the cause of the fault and prepare the required spare parts before coming to the site for repair. If the cause of the malfunction is not a hardware issue, it can be resolved through technical operations such as adjusting or resetting the spectrometer parameters, and can be handled by oneself. Below isTJ270-30a Infrared SpectrophotometerCommon faults and troubleshooting methods for reference.

1、 The low energy of the interferogram results in an unsatisfactory signal-to-noise ratio.

Possible reasons:

1. The beam splitter of TJ270-30a infrared spectrophotometer is damaged;

2. There is an attenuator in the circular optical path;

3. The infrared light source is damaged or its energy has been depleted;

4. The aperture of the diaphragm is too small or the signal gain multiple is too small;

5. The detector is damaged or the MCT detector has no liquid nitrogen;

6. The mirror surfaces of various infrared reflectors or accessories are too dirty;

7. The optical path alignment is not adjusted properly or the position of the non intelligent infrared accessory is not adjusted to the correct position.

Exclusion method:

1. Start the automatic collimation program for the optical path. If non intelligent infrared accessories are being used, manual collimation is also required;

2. Replace the infrared light source;

3. Please have the maintenance engineer inspect and replace the detector if necessary (the damage to the detector is likely caused by moisture, so after replacement, attention should be paid to keeping the instrument room dry. For MCT detectors, liquid nitrogen can be added and rechecked;

4. Please have the maintenance engineer inspect and replace the beam splitter if necessary (damage to the beam splitter is likely caused by moisture or cracks due to collision during replacement, so care should be taken to keep the instrument room dry after replacement, and be very careful when removing or installing from the instrument);

5. Please have the maintenance engineer clean it;

6. Reset the aperture or signal gain multiple to an appropriate value;

7. Remove the attenuator from the optical path.

IITJ270-30a Infrared SpectrophotometerThe optical stage is not working and cannot generate interference patterns.

Possible reasons:

1. The control circuit board is damaged;

2. There is a problem with the operating software;

3. The detector is * damaged;

4. The output voltage of TJ270-30a infrared spectrophotometer is abnormal;

5. The beam splitter is not fixed properly or damaged;

6. The computer and optical platform failed to connect;

7. The temperature in the spectrometer room is too high or too low;

8. The He Ne laser is not working or its energy has significantly decreased.

Exclusion method:

1. Re fix the beam splitter. If the beam splitter is damaged, please have the maintenance engineer inspect it and replace it if necessary (the damage to the beam splitter is likely caused by moisture or cracks caused by collision during replacement, and attention should be paid to keeping the instrument room dry. Be very careful when removing or installing from the instrument);

2. Check the interface between the computer and the optical table, lock the interface, restart the optical table and the computer;

3. Contact the maintenance engineer, or ask the maintenance engineer to inspect and replace the control circuit board if necessary (after replacement, check the efficiency of the stabilized power supply and whether there are any problems with the instrument room power supply again);

4. Check the indicator lights on the spectrometer panel, which have a self diagnostic program to initiate diagnosis. Check if the output power supply is normal, identify the cause of the fault, and contact the maintenance engineer for troubleshooting;

5. Reinstall the operating software;

6. Adjust the room temperature through air conditioning;

7. Replace the detector;

8. Check if the He Ne laser is working properly and promptly seek repair from a maintenance engineer.

3、 The interference pattern energy is too high, causing overflow.

Possible reasons:

1. The moving speed of the moving mirror is too slow;

2. The aperture of the diaphragm is too large or the signal amplification factor is too high.

Exclusion method:

1. Reset the movement speed of the moving mirror;

2. Reset the aperture or signal gain multiple to an appropriate value.

4、 The interferogram is unstable.

Possible reasons:

1TJ270-30a Infrared SpectrophotometerDamage or fatigue of the control circuit board;

2. The airflow in the sample chamber is unstable when measuring in the far-infrared region;

3. The vacuum degree of the MCT detector used has decreased or there is condensation in the window.

Exclusion method:

1. Please have the maintenance engineer inspect and repair:

2. Re evacuate the MCT detector;

3. Wait until the airflow in the sample chamber stabilizes before testing.