Device and method for measuring liquid level in tank by utilizing two pressure sensors

Abstract

The invention discloses a device and method for measuring a liquid level in a tank by utilizing two pressure sensors. The device comprises two pressure sensors and a computing control device, whereinone pressure sensor is a standard pressure sensor for a fermentation tank, arranged at the top of the fermentation tank and used for measuring a pressure value above the liquid level, the other pressure sensor is arranged at the bottom of the fermentation tank and used for measuring a pressure value at the bottom of the fermentation tank, and the two pressure sensors are respectively connected with the computing control device. The device disclosed by the invention solves the difficulty in fermentation tank liquid level measurement and is simple in structure and easy to operate, a user can realize an online liquid level measurement system meeting fermentation sanitary requirements and accuracy requirements only by increasing little cost on the basis of an existing structure, and maintenance is simpler and more economic compared with the traditional sanitary liquid level measurement system, so that the feasibility that online liquid level detection is popularized in the field of fermentation tanks is greatly improved.

Description

technical field [0001] The invention relates to the technical field of microbial fermentation, in particular to a device and method for measuring the liquid level in a fermentation tank. Background technique [0002] The stainless steel fermentation tank is a pressure vessel, and the operator cannot intuitively observe the accurate liquid level in the tank. At present, the main solutions include welding the liquid level gauge, installing a weighing system, and installing a liquid level probe. It is inconvenient to observe the liquid level scale, and the measurement error is large; the weighing system is not suitable for use on large-scale hair stirring; the ordinary liquid level probe will be affected by the fermentation foam when used in fermentation, and it is not suitable for use due to dead angles. Sanitary liquid level Probes are expensive, complicated to maintain, and not widely available. Contents of the invention [0003] The technical problem to be solved by the...

AI Technical Summary

Problems solved by technology

It is inconvenient to observe the liquid level scale, and the measurement error is large; the weighing system is not suitable for use on large-scale hair stirring; the ordinary liquid level probe will be affected by the fermentation foam when used in fermentation, and it is not suitable for use due to dead angles. Sanitary liquid level Probes are expensive, maintenance is complicated, and popularity is not high

Images