Flow Segmentation Method of Intelligent Oval Gear Flow Meter
The flow coefficient of a flowmeter varies at different flow rates. Especially at the minimum flow rate, the difference is large, which affects its range ratio. The electronic meter head can effectively overcome this problem by using flow segmentation comparison, as explained below:
- When the actual instantaneous flow rate is ≤L05, use L00 as the pulse equivalent
- When L05＜actual instantaneous flow rate ≤L06, use L01 as the pulse equivalent
- When L06＜actual instantaneous flow rate ≤L07, use L02 as the pulse equivalent
- When L07＜actual instantaneous flow rate ≤L08, use L03 as the pulse equivalent
- When the actual instantaneous flow rate＞L08, use L04 as the pulse equivalent
If the flow segmentation function is not used, only one pulse equivalent is used, and L09 is set to 0. At this time, the instrument uses L00 as the pulse equivalent regardless of the flow rate.
About Quantitative Control System of Intelligent Oval Gear Flow Meter
The quantitative control system is easy to operate. It directly replaces manual mixing and manual batching. At the same time, it has the characteristics of intuitive display, manual control or automatic control. It is particularly suitable for the quantitative control of oil, water, medicine, batching, quantitative water injection and various liquids or gases in enterprises. It is recommended to use this system for enterprises that can improve work efficiency.
Composition of a quantitative control system
- Flowmeter: This is the basis of control and directly affects the effect of control. The basic requirement is that the higher the measurement accuracy, the better, and there is a signal output function. At the same time, there are many types of flow meters. It is necessary to choose a suitable flowmeter.
- Quantitative controller: Contains full English operation quantitative controller, internal control circuits and components, external control buttons and indicator lights, etc. The power supply is unified to the controller, and other devices such as flowmeters and solenoid valves are directly powered by the controller. It can also output 4-20mA, RS485, Hart and other signals to other control devices.
- Cut-off device: It can control the pump, solenoid valve and electric valve of the pipeline individually or simultaneously. When there are multiple outputs, it can be converted into multiple channels. When controlling the pump, it is necessary to know the power of the pump and add a contactor on site. The coil power supply of the contactor is completed by the controller. The solenoid valve is added because it plays the role of stopping and opening immediately, which is conducive to improving the control accuracy.
