What is the development of metering pump control?
Early, customers in the use of metering pump products, often only required to manually adjust the flow function. With the production and raise the level of automation, metering pump, more and more users tend to use the external control functions such as pulse signal, 4 ~ 20mA current signal or field bus technology and so on to adjust the metering pump stroke length or frequency. In addition, you can also choose frequency conversion motor, combined with frequency converter to adjust the flow frequency to adjust the flow. It is worth noting that, in the early days, some pump manufacturers or users, using the general motor to increase power as a variable frequency motor use. Although this method can reduce the cost, but there is a frequency range is narrow and easy to burn out the motor problem at low frequency, more and more customers are also aware of this, now the situation has become less and less. While the use of variable frequency motor plus inverter mode to realize the control also has the difference with the micro pump itself to achieve the circuit design of the external control, the higher control precision and can realize pulse signal control while the former can only receive analog current signal control. At present, foreign focus on technology research and development of pump manufacturers such as puluomingte, Depam has been able to provide their own integrated metering pumps external control function, not only the signal pulse and current, or even can be integrated with PROFIBUS and CAN-BUS control functions, these products have won more and more attention to improve the level of automation of the production process of the customers. This is also the future direction of pump products.
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