Radar Level Gauge Inclination Correction
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Solution Overview
Problem
Radar level gauges installed on hatches of tanks face misreadings due to slight deviations in the orientation of the hatch, leading to inaccurate liquid level measurements, and there is a need for better control of the hatch position to prevent radiation leakage and false echoes.
Innovation Solution
Incorporating an inclination sensor into the radar level gauge system to generate an angular output based on the deviation from the surface normal, which is used to correct measurements, discontinue signal transmission, and trigger alarms or automatic adjustments to maintain optimal orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the radar level gauge is mounted on a hatch of the tank, then the measurement can be performed from the tank opening, but the hatch may deviate from optimal orientation leading to measurement inaccuracies
Solution Approach 1:
An inclination sensor is integrated into the radar level gauge system to continuously monitor the orientation of the hatch. The sensor provides feedback signals to a control unit, which processes the inclination data and generates control signals to adjust the radar gauge's orientation, thereby maintaining optimal measurement conditions despite hatch movement
Solution Approach 2:
The system transitions from a static mounting arrangement to a dynamic adjustment mechanism. The radar level gauge is equipped with adjustment means that can actively change its orientation based on real-time inclination sensor readings, allowing the system to adapt to varying hatch positions and maintain measurement precision
2Ease of operation
If the hatch position is not controlled, then the system is simple to operate, but radiation may leak and false echoes may occur
Solution Approach 1:
The inclination sensor continuously monitors hatch orientation and provides feedback to the control unit. When the hatch deviates from the optimal closed position, the system generates control signals to alert operators or automatically adjust the radar gauge orientation, preventing radiation leakage and false echo measurements
Solution Approach 2:
The system proactively detects potential hatch position problems before they cause measurement errors or radiation leakage. By monitoring inclination in advance and generating early warning signals, the system prevents harmful effects rather than reacting to them after they occur
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances measurement accuracy by correcting for hatch misalignments, reducing the risk of misreadings and radiation leakage, and ensuring reliable liquid level monitoring, while adhering to telecom regulations.
Implementation Method 1
an inclination sensor for generating an inclination output corresponding to the inclination of said sensor relative at least one of a horizontal axis, a vertical axis
Implementation Method 2
utilize antenna(s) to transmit electromagnetic waves toward the material being monitored and to receive electromagnetic echoes which are reflected at the surface of the material being monitored
Implementation Method 3
electromagnetic echoes which are reflected at the surface of the material being monitored
Implementation Method 4
detect a distance to a surface of a product in a tank... by emitting radiation along a first axis which is parallel to, or coincides with, a normal to said surface
Data Source
Figure 1~2a
Figure 3a~3c
Figure 4
AI summary
A radar level gauge arrangement for determining the fill level of a filling material in a tank is disclosed, which arrangement is mounted on a hatch of a tank and/or on a support which is adapted to be mounted on a hatch of a tank. The arrangement comprises a transmitter for transmitting measuring signals at least along a first axis for determining the fill level of the tank; a receiver for receiving echo signals corresponding to the distance to the surface; a first processing circuitry for receiving the echo signals and to determine a fill level of the tank based on the echo signal; an inclinometer attached to the support and adapted to generate an inclination output corresponding to the inclination relative the surface normal; a second processing circuitry for generating, based on the inclination output, an angular output when there is an angular difference between the first axis and the surface normal. The arrangement also comprises a presenter for communicating information about the angular difference externally of said system, or a communication path for communicating the angular output to said first processing circuitry.