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This post was last edited by liuquan1100 on 2018-6-6 15:01. Compared to float level switches, proximity switches, etc., the fork-type level switch is a highly reliable and compact control switch designed specifically for level measurement; it is more reliable in detecting levels. For this reason, tuning fork level switches are widely used in industries such as chemicals, power generation, environmental protection, and food processing. However, different operating conditions require tuning fork level switches with different parameters to suit them. So, what are the parameters that need to be considered when ordering and selecting a tuning fork level switch? Generally, when ordering and selecting a tuning fork level switch, the following parameters need to be taken into consideration: 1. Explosion protection and its level. It is necessary to determine whether there is a risk of explosion in the installation site; if explosion protection is required, it is important to know what type of protection is needed, such as intrinsically safe or flameproof, as well as what the required explosion protection level is ; 2. Identify the medium being measured and its corrosivity What is the medium being measured, and what is its level of corrosivity? ; 3. Medium thermometer ambient temperature What is the temperature of the medium at the site, and what is the ambient temperature there? ; 4. Process connection method and specifications What kind of process connections are required on-site? For example, whether threads or flanges are needed, what size and what model ; 5. Power supply situation: What is the power supply at the site, AC or DC? ; 6. Signal output method: What type of signal output is required, relay or PNP, etc.? ; 7. Cable entry – What specifications are required for the cable entry? ; 8. Fork length: The length required on-site for tuning fork level switches, etc. Due to differences in specific operating conditions, the parameters of fork-type level switches vary as well; therefore, it is necessary for the buyer and seller to have thorough and detailed discussions to confirm these parameters. This also requires sales staff to have a detailed understanding of the specific parameters of fork-type level switches, so as to assist customers in ordering and selecting such switches, and to provide them with products that are more suitable for their specific needs and offer better cost-performance. The Shenzhen Jiwei Ring-21 fork-type level switch is an economical limit control switch designed specifically for level measurement. It was developed based on traditional fork-type level switches (which are larger in size). This product features a compact and lightweight design: its total length is 160.5 mm, with a maximum diameter of 31.5 mm, and the length of the fork itself is only 38 mm. The measurable medium density is as low as 0.7 g/cm3. These parameters and product features of the Ring-21 tuning fork level switch enable it to be used not only in containers, storage tanks, and tanks where there is foam, bubbles, viscous liquids, or vibration interference, but also for level measurement in small containers and in situations where the space around the tank is limited. http://www.jiweimeter.com/uploads/image/20180525/1527241266.jpg is considered a Ring-21 compact tuning fork level switch