Installation requirements for pipeline electromagnetic flowmeter Posted by : admin / Posted on : Jun 04， 2021

Installation requirements for pipeline electromagnetic flowmeter

1. Requirements for straight sections
In order to improve the influence of eddy current and flow field distortion, there are certain requirements for the length of the front and rear straight pipe sections of the flowmeter installation, otherwise it will affect the measurement accuracy (a rectifier can also be installed, try to avoid installing after close to the regulating valve and half-open valve).

2. Requirements for process tubes
The flowmeter has certain requirements on the upstream and downstream process pipes of the installation point, otherwise the measurement accuracy will be affected.
a. The inner diameter of the upstream and downstream process pipes is the same as the inner diameter of the sensor, and should meet: 0.98DN≤D≤1.05DN (where DN: sensor inner diameter, D: process pipe inner diameter)
b. The process tube and the sensor must be concentric, and the coaxial deviation should not be greater than 0.05DN

3. Bypass requirements
In order to facilitate the maintenance of the flowmeter, it is best to install a bypass pipe for the flowmeter. In addition, if the flowmeter needs to be cleaned and the flow cannot be stopped, a bypass pipe must be installed.
a. Convenient flow meter maintenance
b. Must be installed for heavily polluted fluids
c. The fluid cannot be stopped and the flowmeter needs to be cleaned