Oil & Gas
Coal,Biomass & Industrial Waste
Solar Cogeneration System
FORBES MARSHALL ARCA
Three -way valves
FORBES MARSHALL CODEL
Opacity / Dust Monitor
Insitu Multi Gas Analyser
Online CO Gas Analyser
Flue Gas Flow Monitor
Coal Mill CO
Online Oxygen Analyzer
VIBRATION MONITORING DIVISION
Online Vibration Monitoring
Portable Vibration Monitoring
Condition Monitoring Consultancy Services
Turnkey Process Instrumentation Systems
Pressure and Temperature Transmitters
Lift Check Valve
Swing Check Valve
Globe Valves/Stop Valves
Stop and Check Valves
Pressure Reducing and Desuperheating System
Pressure Reducing Station
Angle Type Pressure Reducing and Desuperheating System
PROCESS ANALYTICS DIVISION
Accessories and STD Solutions
AIR EFFICIENCY SOLUTION
Master Air Control
FAD (Free Air Delivery) Meter
DISTRIBUTED CONTROL SYSTEM
Microcon+ Distributed Control System(DCS)
Microcon+ Programable Logic Controller(PLC)
Electric to Pneumatic Transducers (I/P Converter)
Air Efficiency Solutions
Steam Engineering Training
Control Instrumentation Training
After Sales Service
VISIT A FORBES MARSHALL BUSINESS
Maintaining condition of rotating machines in Cement Industry : Week 10/17/2014
Maintaining condition of rotating machines in cement industry : Week 9/22/2014
Precise temperature control of steam supplied to turbine : Week 8/12/2014
Measuring Fats and Proteins directly in dairy industry : Week 6/6/2014
Level measurement at dirty and dusty locations : Week 5/19/2014
Why level measurement ? : Week 3/15/2012
Why level measurement ? : Week 3/15/2012
In the last article, we discussed about whether it is possible to both measure & improve the FAD. In this article, we will discuss about Level measurement
Why level measurement?
Measurement of level in variety of vessels used in industry is important. There can be valuable liquids, hazardous liquids or important liquids that need to be stored carefully. Wrong or inaccurate level measurements can result in real levels in vessels being excessively higher or lower than their measured values. While low levels can cause pumping problems, high levels can cause vessels to overflow. This may cause safety and environmental problems. If the vessels are operating at wrong intermediate levels, it can result in poor operating conditions and also result in wrong accounting of material.
The level of a liquid in a vessel can be measured directly or inferentially. Examples of direct level measurement include float, magnetostrictive, retracting, capacitance, radar, ultrasonic and laser level measurement technologies. Weight and differential pressure technology measure level inferentially. All have problems that can potentially affect the level measurement.
Types of Level Measurement
Direct Measurements :
Inferential Measurements :
What is so great about Radar?
The most important thing about radar technology is that it does not make any contact with the liquid or solid material in the vessel. Radar measurements are not influenced by airspace conditions like humidity, heavy vapors, and vapor layer stratification due to temperature fluctuations. It works well with heavy dust in the measurement area.
You can use non-contact radar gauges for tank and vessel level measurement on almost any liquid and many solids. It can be used in storage condition or during processing. It is versatile because it is not affected by changes in product or process in connection with temperature, pressure, density, conductivity, vapors, or dust. Since the measurements are done without contacting the measured liquid or solid, it makes them versatile and reliable.
When it comes to Liquid Level Measurement....
Traditionally DP type /Capacitance type level transmitters were the only most common solutions for liquid level measurement. However, today it is possible to get the latest technology of guided wave radar at similar prices, it become more advantageous to go for the guided wave radar technology.
Usually, DP type transmitters are associated with issues related to frequent maintenance, accuracy & high dependability on many components. All these issues can be overcome with the use of guided wave radar technology
When it comes to Solid Level Measurement....
In high bins and silos, sensors with cables may suffer mechanical wear, or by mechanical load and adhesion of the product. This can reduce the lifetime of "contact" sensors and increase user’s maintenance and servicing cost. Non-contact Radar Level Transmitters don’t have these problems. They are easy to install and configure. This means :
Saving in maintenance costs
Savin in service costs
Increase in the lifetime of your sensors
Reliable measuring results
In our next article, we will discuss about some applications for guided level radar technology.
Note : These articles are released on our website on a fortnightly basis. If you like these ideas / articles, do contact us at ‘firstname.lastname@example.org’
Technical Inputs by :
Editing by :
© Forbes Marshall Pvt Ltd
Food & Beverages
Metals & Mining
Paper & Pulp
Forbes Marshall Arca
Forbes Marshall Codel
Forbes Marshall. All rights reserved.