On-site case sharing of liquid mass flow controller

Email: sales01@cxflowmeter.com

whatsapp: 008618049841995

On-site case sharing of liquid mass flow controller

On-site pipeline

The customer is a manufacturer of protein products (biomedical). The process requirement is to add a certain amount of 

methanol (±5% acceptable error) to the reactor within a fixed time. If the amount of methanol is too little, the reaction will

 not be able to proceed. If the amount of methanol is too much, it will directly cause microbial poisoning and cause the entire

 tank product to be wasted.

The customer placed the methanol tank in the distribution room on the first floor. By adding compressed air to the tank, 

the internal pressure of the tank was always maintained at 0.25Mpa, and this pressure was also the power source for liquid 

transportation.

The liquid controller was installed on the production platform on the second floor. The length of the pipeline from the liquid 

tank to the controller was greater than 15m, which caused the entire system to be unable to work at a constant pressure. The 

outlet pressure of the liquid tank was 0.25Mpa, and after passing through a 15m long pipeline, it reached the front section of 

the flowmeter. The pressure was only 0.18Mpa, which could not meet the use requirements (the rear tank was 0.06Mpa 

constant pressure), and the constant pressure of gas would cause untimely pressure replenishment (the pipeline was too 

long and the feedback was long) and gas would be mixed into the liquid.

This leads to unstable pressure pipelines with gas, and the controller cannot accurately control it. The overall flow deviation 

is too large and there is no linearity.

Solution:

Increase the system pressure to ensure that the controller differential pressure meets the 0.2-0.3Mpa use requirement. Perform

 multiple calibration tests under constant system pressure.

If you want to know about the use, installation and commissioning quotation of liquid flow controllers, please consult CIXIFM winny:

Email: sales01@cxflowmeter.com

whatsapp: 008618049841995