Metering pump has super good superiority, the application in many industries wins, the following introduces all kinds of basic knowledge of metering pumps Q & A, novice must-see. 1, the most basic metering pump accessories include? A: The annex includes: the end of the valve, injection valve, 2 meters pipette and 5 meters drain line. 2, a complete dosing pump head which components are included? A: A complete hydraulic end includes the following components: pump head, diaphragm, valve, backplane and mounting bolts. 3, the end of the main purpose of the valve is what? A: The bottom valve itself has a weight that keeps the aspiration tubing straight and allows the aspiration tubing to be perpendicular to the chemical cartridge. In addition it is also a check valve to maintain the positive flow of chemical liquid. The bottom valve also helps to improve pump repeatability and normal pipetting. A screen inside the bottom valve prevents solid particles from being aspirated into the pipetting line. Ingestion of small solid particles may cause the diaphragm of the metering pump to break. The foot valve also includes a connector for connecting the pipette. The bottom valve should be mounted vertically and keep the bottom valve at a distance from the bottom of the reservoir. For most self-priming metering pumps at the end of the valve selection is necessary. 4, the main purpose of injection valve is what? A: The injection valve is used to connect the drain line with the injection point. Injection valves can not be used as isolation devices or as siphon protection. In applications where the requirement is not too high, the injection valve can generate a back pressure of 0.5 bar. 5, the main purpose of the rinse equipment is what? A: Rinsing equipment is used to clean the metering pump head and drain lines. Mainly used in the measurement of chemical easily solidified or metering pump often need to be idle. 6, what is the float switch, what is its main role? A: The float switch is a very critical device for controlling the level of the tank. When the level drops, the float sinks and the contacts in the switch close. This contact can be used to control the metering pump, for example to stop the metering pump 1 and start the metering pump 2, or to turn the alarm / indicator light on air. By reversing the float, the float switch can be applied to the collection tank, indicating that the collection tank is full and the metering pump is stopped. 7, single-stage float switch and two float switch What is the difference? A: When the switch action, the single-stage float switch directly stop metering pump. For a two-stage float switch, activating the first stage can be used to alert the reservoir to indicate the low level. When the second level switch is activated, the metering pump stops.
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