In general, the models of photochemical reactors are: a circular reaction model, an internal illumination reaction model, and an external parallel light reaction model. Among them, the circular reaction model generally selects a long arc series of xenon lamps or mercury lamps, and also a halogen lamp source. In the ring-type photochemical reaction system, 6-9 lamps can be selected around, which increases the irradiation intensity and irradiation area of ​​the reaction solution. The system is typically applied to low pressure mercury lamp systems with selectable wavelengths of 185 nm and 254 nm. The internal illumination reaction model can be selected from CEL-HXF300 xenon lamp source, CEL-WLAX500 and CEL-WLAM500. Please refer to the product center for details. The internal photochemical reaction system is generally divided into two types, one being an independent photoreactor and one being in the form of a plurality of photoreactors. In addition, the external parallel light reaction model (external illumination reaction system), the reaction model is simple, the reactor requirements are not high, and the simplest beaker can be used as a reactor.
Shanghai Jiapeng introduces the basic maintenance knowledge of photochemical reaction instruments:
1 Pay attention to the anti-fog of the meter.
In the use and storage of surveying and mapping instruments, in addition to the mildew phenomenon, there are often fogging of optical parts, which affects the normal use of the instrument. Therefore, preventive measures can be taken against the main factors of fogging of the optical signal.
2 The management and use of instrumentation must be emphasized.
The high load of instrumentation equipment is often prone to accidental failures. In particular, if the optical instrument is fogged due to maintenance and improper use, it will not be able to play the normal role of the instrument, and bring obstacles in the work. Therefore, efficient maintenance and management of instrumentation has become an effective means for enterprises and institutions to effectively reduce costs and increase labor productivity.
3 In order to avoid electric shock, the input battery line of the instrument must be grounded. This instrument is used for three-core grounding plug. This plug has a grounding pin. If the plug cannot be inserted into the seat, please install the correct socket. Do not make The meter loses ground protection.
4 Before connecting the AC battery, make sure that the voltage is the same as the voltage required by the meter (allowing ±10% deviation) and ensure that the rated load of the battery socket is not less than the meter requirement.
5 meters are usually used for the supplied battery cable. If the battery cable is damaged, it must be replaced and repaired. Replacement must be done with the same type and size of battery cable. Do not place any items on the battery line when the instrument is used. Do not place the battery cable where people are moving.
6 Meters should be placed in a cool, ventilated, dry, dust-proof position. For better heat dissipation, the instrument should be kept at an effective distance (N>30cm) for other items.
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