Spectroscope is a general term for spectroscope, steel inspection mirror, and spectrometer. An instrument device used for semi quantitative analysis of emission spectra. There are two types: laboratory bench mounted and portable for on-site analysis. It is composed of a dispersive element, a slit, a collimator tube, and an objective lens. After the light source radiation is dispersed by a glass prism or grating, the spectral lines are focused on the eyepiece of the focal plane for spectral recognition and visual measurement.
The common faults and solutions of spectroscope are as follows:
1. The spectrum gradually darkens, which may be caused by the following factors:
1.1 Protect the glass from being too dirty. Exclusion method: Replace the protective glass.
1.2 The surface of the eyepiece is too dirty. Exclusion method: Clean thoroughly.
1.3 Lens mold. Inspection method: Remove the entire set of eyepieces, and with the light source turned on, observe the aperture spot through the light bar. If there is dendritic dirt in the spot, it means that the lens is moldy and needs to be replaced.
2. The brightness adjustment button may not work or the brightness spot may not be found on the light screen
2.1 If the connection is broken, the main body cover needs to be opened, and if necessary, the connecting cylinder cover needs to be opened to connect the broken wire and adjust the length.
2.2 The position of mirror 13 has changed, and the light spot cannot be reflected onto the light screen. It is necessary to open the connecting cylinder cover and adjust the position of mirror 13 when the spectral brightness is optimal, so that the light spot is firmly fixed behind the center of the light screen.
3. The reason why the spectral lines of the rotating drum do not move may be:
3.1 Prism shaft or top rod gets stuck. Exclusion method: Open the main body cover and remove it by adding lubricating oil or re grinding according to the specific situation.
3.2 If the fastening screw between the drum and the cam is loose, it is necessary to unscrew the screw on the end face of the drum, take the handwheel and tighten the fastening screw (while adjusting the orientation of the cam).
4There is a significant shift in the spectral band rangeIt can be corrected by adjusting the screw supported by the top rod or by changing the relative position between the cam and the drum.
When the scale of the drum changes too much (i.e. the 0 position changes greatly), the three screws on the end face of the drum can be loosened and the position of the scale drum can be adjusted by rotating it.
5When the field of view light bar is skewedYou can loosen the three screws that secure the entire eyepiece and adjust it by turning the entire eyepiece by one angle.
7Spectral line skewnessIt is caused by the rotation of the slit, and the presence of horizontal black lines in the field of view is due to the presence of dirt on the slit. It needs to be eliminated by rotating and cleaning the slit. Slit cleaning method: Use a cork rod to cut into sharp wedges, and wipe along the direction of the slit with a small amount of alcohol.
8Optical components should be wiped as little as possibleEspecially for internal optical components, non experienced professionals are not allowed to disassemble them. Serious malfunctions should be sent to specialized repair units or manufacturing plants for repair.