Metal tube float flowmeter flange M3 indicator

Overview.

LZ series metal tube float flowmeter (also known as metal rotor flowmeter) is a variable area flowmeter, with simple structure, reliable work, wide range of applications, high accuracy, easy installation and so on. The series flowmeter and glass float flowmeter comparison, with high pressure, high temperature, strong sense of security, according to the flow output of 4 ~ 20mA current signal can be used for automatic detection and control, etc.. And can be applied to opaque media and corrosive media flow measurement. The two series are divided into field indication type and field indication with electricity remote transmission type.

Metal tube float flowmeter is composed of measuring tube body, orifice plate and float (cone tube and float) and magnetic conversion instrument. According to the installation method can be divided into vertical basic type, horizontal type; according to the connection method is divided into flange type, thread type and clamp type, which corresponds to the caliber of the flow range and the same basic performance. The series flange vertical type can be lined with PTFE or F46 corrosion resistant type.

The working parameters of this series instrument and its conversion and correction are provided by the instrument calculation software with standard calculation methods to ensure the accuracy and measurement reliability of the instrument.

◆Product execution standard: JB/T6844-2015 (industry standard)

◆General standard of flange: GB/T9115.1-2010 (national standard)

◆Type approval certificate: 2010F449-33

Working principle.

LZ series metal tube float flowmeter for variable area flowmeter, that is, in the vertical measuring tube of the flowmeter, when the fluid flows upward through the tube, the float moves upward, at a certain position the lift force on the float and the float gravity to reach a balance, at this time the float and the orifice plate (or cone tube) between the circulation ring gap area to maintain a certain.

The ring gap area is proportional to the float's rise height, i.e. a certain height of the float represents the size of the flow. When the float moves up and down, the position is transferred to the external indicator in the form of magnetic coupling, so that the pointer of the indicator follows the float movement and indicates the flow rate on the dial. The electric remote transmission type is to indicate the flow rate on the spot with the pointer and then convert the flow rate value into a standard 4-20mA signal accurately through the angular displacement sensor or electric transmission circuit.

这时首先应关掉量热式气体质量流量计两侧的闸阀，随后拆下上法兰，取出浮子开展清理，再再次装上。注意拧紧上法兰螺帽要均衡扭紧，并垫好垫圈；

为了防止因为管路造成的流量计形变，工艺管线的法兰务必与流量计的法兰同轴而且相互平行，适度地管道支撑以防止管路震动和减小流量计的径向负荷，检测系统中调压阀应安装在流量计的下游；

因为仪表是通过磁耦合传送信号的，因此为了确保分体型电磁流量计的特性，安装周边至少10cm处，不可以有铁磁性物质存有；

测量气体的仪表，要在特定压力下校正的，假如气体在仪表的出口直接排放到大气，可能在浮子处产生气压降，并引起数据失真。真是如此的话的工况条件，应在仪表的出口安装一个闸阀；·安装PTFE内衬的仪表时，要特别当心。