How To Do Maintenance Of Optical Emission Spectrometer

Optical emission spectrometer encounters some problems in daily testing and actual operation. Here, we share the maintenance attention points of several optical emission spectrometers in order to help users of optical emission spectrometers solve problems in daily operations. .

Excitation Table

In the excitation system, the basic maintenance part is the inside of the excitation table, whether the interior of the excitation table is clean, the electrode pole distance is stable, and the height of the excitation arc flame relative to the optical system affects our data results.

1. Pull out the exhaust pipe and use a vacuum cleaner to clean the dust in the excitation chamber.

2. Wipe the jacket with absorbent cotton dampened with pure alcohol

3. After the cleaning is completed, re-measure the analysis interval with the pole gauge

4. Rinse the entire circuit with argon for 2 to 3 minutes to flush the air entering the spark table.

Lens

The concentrating lens is the only channel through which the sample is excited to enter the spectrometer, and the mirror must be kept clean. However, long-term use of the concentrating mirror will be polluted, and a layer of brownish brown matter will adhere to the outer surface. The longer the time, the thicker the deposit. The metal powder generated by the excitation also adheres to the outer surface of the lens, reducing the transmittance of light, and lowering the absolute light intensity of all elements, especially the far ultraviolet elements C, P, and S are more obvious.

The surface of the concentrating lens is made of absorbent cotton, and a mixture of diethyl ether and ethanol is applied, and the mixture is wiped outward from the center of the concentrating mirror. If the pollution is serious, rub it a few times, until the dirt is wiped off and then wipe the watermark with a dry cotton ball.

In particular, the concentrating mirror is made of quartz. You can't use a hard object (you must never use a metal clip to clamp the cotton) to avoid scratching the lens surface.

Abandoned bucket

Argon is an inert gas and has no direct harm to the human body. However, part of the dust generated by the spark table after the sample is excited will be blown away by argon gas, and the tail pipe will become black. For a long time, it needs to be cleaned to ensure the smoothness and cleanness of the gas path. The main component of the exhaust gas generated after the excitation is argon containing the metal dust after the excitation. After long-term direct inhalation, the person may cause silicosis, eye damage, etc., and cause great harm to the human body. The exhaust pipe of the direct reading spectrometer can be made of a transparent plastic tube, which can be inserted into the water during installation; if the tube wall is black and opaque, the exhaust pipe needs to be replaced.