Metal tube float flowmeter flange type M5 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.

普遍调试期故障关键有安装不妥、环境影响、液体特性影响三方面原因。任何一体式玻璃浮子流量计使用情况下都会由于各种原因，出现异常，怎么解决这些问题，是每一个仪表工程师务必掌握的难题，这儿大家就金属管转子流量计在使用中出现的故障及其解决方案作简要描述。指针颤动：

1．轻度指针颤动：一般因为介质起伏造成。可选用提升减振的方法来克服。

2．中度指针颤动：一般因为介质流动状态导致。针对气体一般因为介质操作压力不稳导致。可选用稳压或减压稳压阀设备来克服或增加玻璃浮子流量计气减振。

3．强烈指针颤动：关键因为介质脉冲，气压不稳或用户给出的气体操作情况的压力、温度、流量与浮子流量计具体的状态不符，有较大差别导致浮子流量计过量程，可联系我公司技术人员核查。