The MUGF-SB Ultrasonic gas flowmeter is based on the principle of acoustic transit time to calculate the average gas move velocity by measuring upstream and downstream time, in which the ultrasonic waves generated by a pairs of by-directional transducers assembled with an angle respect to axis.

• No moving parts, low pressure drop, long life span;
• Bi-directional measurement;
• Simple installation, easy maintenance;
• High accuracy and good reliability;
• Ex-proof: Exd(ib)IIBT4 (exclude ecetylene);
• Temperature and pressure compensation;
• Suitable for small flowrate and large size pipe.

1. Installation type
Generally, the flowmeter should be installed horizontally. The length of pipe line both up stream and down stream of flowmeter is no less than10 DN. When install flowmeter in other mode, it should be installed where pipe upward, in case of water to be left in meter body. Direction of medium flow should be the same as marked arrow. No leakage is allowed at joints between pipes and the sealing washer can't protrude into the pipe which would change the current flow and give rise to vortex that could influence the accuracy of flowmeter.

2. Pipe requirements 
Make sure the straight pipes upstream and downstream is clean inside without any dents, rust, and delamination etc. There should be no obstacles or branch pipes except pressure tap, and thermowell in those pipes. Plus, flanges and pipes upstream and downstream should have same inside diameter and be smooth at joints.