Third Party Calibration Services
LEOMI provides Air Velocity calibration services for various type of Air Velocity Instruments such as Insertion Thermal Mass Flow meter, Hot-wire / Vane Anemometer, Pitot Tube and more.
We join hands with customers who are using other make air velocity products. And we provide quality calibration services to produce effective outputs that will satisfy the needs and expectations of them. We endeavour to always update and understand the requirements of our jobs and the systems and procedures that sustain us, employing quality teams, training, and increased responsibility and accountability for employees.
For more information on Third Party Calibration Services, kindly drop us a message.
RENTAL AGREEMENTS
If you are looking for Insertion Thermal Mass Flow Meters for your applications for specific periods, try LEOMI thermal mass flow meter on rent. We are able to offer insertion thermal mass flow meters with solid reputations for quality, reliability and safety.
You won’t come across a more extensive thermal mass flow meters and calibration rental selection anywhere else. Our rental meters can serve the needs of plants in a wide range of industries. Our knowledgeable service experts can help you select the ideal meter rental for your industry, applications and budget.
For more information on Rental Agreements, kindly drop us a message.
ANNUAL MAINTENANCE CONTRACT
In today’s competitive era, quality is prime factor. Performance of the meters depend on repeatability and accuracy. To get repeat performance; meter’s performance check by validation and inspection is utmost important. In order to help our customers in getting the optimum process results in their manufacturing facility, LEOMI has introduced the concept of Annual Maintenance Contracts (AMC) for the thermal mass flow meters and our supplies.
AMC is an agreement with us for repair and maintenance of thermal mass flow solutions used by the users. Our service engineers will provide comprehensive and non-comprehensive contract for predictive and preventive maintenance for your meter’s efficient functioning.
For more information on Annual Maintenance Contract, kindly drop us a message.
TECHNOLOGY VERIFICATION INTIATIVE
We can work together for any other application with “Technology Verification Initiative” taken by LEOMI with mutual agreement. Our engineers are ready to join hands with you for any other application we can process. Let’s explore your application with our thermal mass flow solutions for its verification jointly.
For more information on Technology verification Intiative, kindly drop us a message.
Downloads
Brochure
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LEOMI BROCHURE
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Data Sheet LEOMI-586
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Data Sheet LEOMI-587
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LEOMI 586 Installation and Operating Instructions
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Application Questionnaire
Knowledge Base
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Primary Signal Calculation Theory LEOMI
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Gas Volume Calculator
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Measurement Principle Insertion Thermal Mass Flowmeter
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Gas Mixture Calculator
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Sensor Surface & Insertion Depth Calculator
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Averaged flow velocity
Software
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Full Setup Software LEOMI 586
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Gas Mixture Calculator Software LEOMI 586
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Gas Flowrate Calculator Software LEOMI 586
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Sensor Surface Insertion Depth Calculator Software LEOMI 586
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Terminal Software LEOMI 586
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Terminal support driver software
Application Note
FAQs
How does LEOMI thermal dispersion technology work?
LEOMI has developed a new measuring system which enclosed the old and proven technology together with a very new and high performance digital microprocessor technology.
The calorimetric measurement based on the physically principle of heat transfer from a heated element to the ambient medium (eg. air). This is effected by the velocity, by the density (temperature and pressure) and by the characteristic of the medium.
The temperature difference (over temperature) Δt between the reference sensor (medium temperature) and the heater sensor is controlled electrical constant by an analogue controller**
(CTA= Constant Temperature Anemometer).
What are the technological advancements LEOMI has held?
LEOMI uses analogue technology utilizing a separate analogue controller for over temperature controlling instead a traditional drift prone Wheatstone Bridge.
Electrical drifting, no lead length compensation, difficult adjustment and many more disadvantages of a Wheatstone Bridge are not existing in the LEOMI solutions.
In what applications can a thermal mass flow meter be utilized?
Thermal mass flow meters by LEOMI are designed to utilize industrial applications such as compressed air, combustion air, bio gas, natural gas, flue gas, aeration air, flare gas, welding gas and many more corrosive process gases.
Industries include textile & steel, power & petrochemicals, automobile & ancillaries, cement & chemical, food & pharmaceuticals and many more.
Additionally, our engineers are ready to join hands with you for any other application we can possess.
What are the technological advantages of insertion thermal mass flow meter?
Insertion thermal mass flow meters measure direct gas mass flow with short response time and absolute accuracy. It eliminates difficulties of a traditional drift prone Wheatstone Bridge technology by utilizing a separate analogue controller for the over temperature controlling. It also has large span and low pressure drop than other technologies.
Does LEOMI thermal mass flow meter influence the flow of application?
If there is no meaningful pressure drop, then LEOMI meters are nearly not influencing the flow. It provides direct mass flow. So, it also eliminates temperature or pressure transmitters.
What is the measuring range of LEOMI thermal mass flow meter?
LEOMI meters can be used in high temperature ranges up to 400°C. Wide turn down ratio range 1:100. And it can calibrate velocity from 0.6 Nm/s to 60Nm/s.
What care should be taken on a LEOMI sensor?
There is no maintenance required other than periodically checking of the sensor for particle deposition. The procedure condition decides the support plan. Inert, clean & dry applications need no maintenance.
How often is re-calibration required?
As the electrical characteristics and conditions are changing over the time, it is advisable to change components on a frequent basis. It is suggested to re-calibrate the meter on time to time (yearly) basis.
What are major disadvantages of thermal mass flowmeters ?
The customer should use thermal mass flowmeter mainly for dry and clean gas to ensure accuracy & for the gas it is calibrated.
- Change in gas composition may degrade its accuracy
- Wet gas conditions also reduce accuracy and liquid droplets may cause sudden rise in flowrate which is artificial and causes inaccuracy.
- Dust or dirt or oil particles in gas may cause drift in readings as it will dampen actual differential temperature between sensors.
In which applications thermal mass flowmeters most suitable & why ?
Thermal mass flowmeters are mostly successful in various gas applications such as
- Combustion Air in power plant for realizing combustion efficiency
- Compressed air consumption & leak monitoring as main utility in textile, automobiles & other industries
- Aeration air in wastewater & effluent treatment for DO control
- Natural gas metering in-plant (boilers/heaters/furnaces) process efficiency & production cost accounting
As thermal mass flowmeter offers benefits:
- For dry and clean gas at certain conditions with highest accuracy
- Highest turndown ratio of 100:1 or better
- No pressure drop or negligible against other technologies saves energy in low static line pressure like Biogas, Landfill gas etc.
- Versatile & easy installation in 30mins at very low cost.
The customer must know it’s process requirements and selection of correct flowmeters. Customer should provide below details for best performance:
- Flow rate operating min. & max ranges
- Temperature & pressure operating min.& max ranges
- Gas composition or Gas mixture (Dry or Wet)
- Installation piping layout & available straight lengths
Generally customer oversee few points while using thermal mass flowmeter as below:
- available straight lengths are in-sufficient
- in-correct gas mixture composition estimation & it’s conditions
As a manufacturer we have to provide suitable recommendation of flow conditioner for in-sufficient straight length for better accuracy. On-site K-factor may be applied for some typical process condition by application study for error compensation in a limit way.
Can we use thermal mass flowmeter for steam flow measurement?
NO. As in thermal mass flowmeter heat is dispersed from heater sensors to gas stream & cooling effect of heater sensor generate change in differential temperature in most of real gases while in steam flow heater sensor has no effect of cooling which prevents change in differential temperature thus measurement not possible.
Now a day’s Ultrasonic flowmeter for gas flow measurement is under advancement and it’s Non-Intrusive working is the major advantages against Thermal mass flow technology off-course at a higher cost. Dirt or moist gas may create effect accuracy of ultrasonic flowmeter than thermal mass flowmeter. Inside pipe corrosion have much impact in performance in Ultrasonic flowmeter than thermal mass flowmeter. For fix gas flowmeters application still thermal mass flowmeter will still a preference due to its cost versus performance. Portable applications ultrasonic is much preferred.
As many companies see big potential in this technology, it has persuaded researchers on developing rugged sensor design & materials configuration and writing software algorithms on sensor behavioral simulation analysis as per actual site conditions. Also, developing suitable accessories such as cleaning mechanisms, onsite re-calibration for solving complex applications is also underway. All above and customers demand will improve this technology demand. Thermal Mass flowmeter seems to have a great future considering it’s cost versus performance against some of the conventional technologies such as Orifice, Vortex, turbine flowmeter etc.
What are the benefits of using an insertion thermal mass flow meter for flue stacks?
Insertion thermal mass flow meters offer several advantages for flue stack applications. Firstly, they provide accurate measurements of gas flow rates, helping optimize combustion processes and ensuring regulatory compliance. Secondly, they are easy to install, requiring minimal disruption to the flue stack system. Additionally, these meters are highly durable, capable of withstanding harsh operating conditions commonly found in flue stack environments.
How does an insertion thermal mass flow meter work in a flue stack?
An insertion thermal mass flow meter operates based on the principle of heat transfer. It typically consists of a heated sensor and one or more temperature sensors. The heated sensor measures the cooling effect of the gas flow, which is directly proportional to the mass flow rate. By comparing the temperature difference between the heated and non-heated sensors, the meter calculates the gas flow rate accurately.
What makes an Air Flow Meter essential for industrial applications?
Air Flow Meters are critical for optimizing and monitoring air consumption in various industrial processes, ensuring efficiency and reducing operational costs.
How does a Gas Flow Meter enhance operational efficiency in industries?
By providing accurate real-time data on gas usage, Gas Flow Meters help industries in monitoring and controlling their gas consumption, leading to improved process efficiency and cost savings.
Can a Bio Gas Flow Meter be used in renewable energy applications?
Absolutely, Bio Gas Flow Meters are specifically designed to measure biogas production accurately, essential for optimizing the performance of renewable energy systems.
What is an Actual Mass Flow Meter and why is it important?
An Actual Mass Flow Meter measures the mass flow of gases or liquids directly, offering precise control in processes where exact quantities are crucial for quality and efficiency.
Why choose an Inline Thermal Mass Flow Meter for your process?
Inline Thermal Mass Flow Meters provide direct, in-line measurement of mass flow rates for gases, offering superior accuracy and minimal pressure drop, ideal for both monitoring and control applications.