TRICOR Coriolis Mass Flow Meters

TRICOR is AW-Lake’s line of Coriolis Mass Flow Meters, for both liquids and gases, with a product range that includes four distinct lines. 

The TRICOR CLASSIC Series of Coriolis flowmeters is our "ordinary" line, with lower cost and performance specs to cater to a broader market. The TCM “CLASSIC” series meets general industrial requirements with out-of-the-box ease of use. Lower cost and lower performance specs meet broader application needs. Applications include the processing of paint and coatings and dosing of non-corrosive fluid requiring 0.3% accuracy and low to zero maintenance.

The TRICOR PRO Series is an "advanced" line, with improved performance, diagnostics, and connectivity, as well as a DSP transmitter. The new TCD 9000 series of transmitters offers greater robustness, performance, diagnostics, and connectivity options. With a modern HMI interface and robust logging functionality, the DSP transmitters provide users with an efficient configuration and analysis tool.

The TRICOR PRO Plus Series contains a small sensor linked to a TRICOR DSP transmitter. The new PRO Plus Series presents an accurate and highly repeatable meter with the most compact installation length on the market for installation into systems where space is limited. In addition, the TCD transmitter offers greater robustness, performance, diagnostics, and connectivity options. With a modern HMI interface and robust logging functionality, the DSP transmitters provide users with an efficient configuration and analysis tool.

Finally, the TRICOR SPECIALTY Series Coriolis flowmeters for high-pressure applications are available. The TCMH 0450 is offered in three pressure ratings: 6,000 psi, 10,000 psi, and 15,200 psi (414 bar, 690 bar, and 1050 bar). The material choices for the U-shape tubes are either 316L stainless steel for chemical injection applications (NACE compliant) or Sandvik® Alloy HP 160, chosen to eliminate hydrogen embrittlement, such as in Hydrogen fueling stations. The TCMH 0450 is the world’s first MI-002 / OIML137 certified Coriolis flowmeter for hydrogen dispensing applications.

M.S. Jacobs
https://msjacobs.com
800-348-0089

Required Information for Sizing the Correct Thermal Mass Flow Meter for Your Application

Thermal mass flow meters offer accurate, repeatable, and dependable measurements of liquids and gases for both industrial and environmental processes.  They are used in a multitude of applications including landfills, GHG emissions, flare gas, natural gas measurement, pollution control, petrochemical, chemical processing, measuring hydrogen gas, food and beverage, pharmaceutical, semi-conductor manufacturing, sub-metering of clean process gases, and power / utility.

When sizing a thermal mass flow meter, the following information is required in determining the correct flow meter for your application:

1. Fluid
2. Insertion or inline meter
3. Minimum and maximum line pressure
4. Minimum and maximum flow rate
5. Minimum and maximum fluid temperature
6. Pipe diameter, schedule and material
7. Standard, sanitary or ultra-high purity finish
8. Desired process connections
9. Flow direction
10. Available power for transmitter
11. Transmitter output

Once these parameters are determined, a mass flow meter may be properly specified for your application. To be safe the instrument will perform safely and without problem, it is highly recommended you consult with a process instrumentation expert for assistance.

M.S. Jacobs and Associates
https://msjacobs.com
800-348-0089

BTU Metering with Non-invasive, Clamp-on Ultrasonic Flow Meters

BTU Metering for HVAC
Energy Management

The modern business climate has, for some time now, been spooling up demand for accountability and, even more so, efficiency. Whether you think of efficiency as "doing more with less" or just avoiding the expenditure of financial, human, or natural resources the end result is the same and calls for similar prerequisites.

We live in a society of buildings, each with a mapped out function. Most buildings are predominantly occupied by people, bringing a requirement to maintain temperature, relative humidity, and air quality at levels of suitable comfort for human occupants. The energy consumption involved with providing that level of comfort stands as a bold line item in the operating expense ledger for any building. That is where accountability and efficiency come in. It is in the building stakeholders' interest to have knowledge regarding rates and quantity of thermal energy usage, as well as efficiency measures of delivered output per unit of input energy.

Installation of the BTU meter.
Typically takes about 4 hrs.

HVAC (Heating, Ventilation, Air Conditioning) primarily is an endeavor that generates and moves
thermal energy throughout an enclosed space. Commercially available technology now allows a building operator to accurately measure that movement of thermal energy throughout a system or building. The process is generally called BTU metering and has a number of justifiable benefits.

• Real time equipment performance measurement.
• Sub metering can indicate specific areas of consumption.
• Ability to directly bill multiple tenants in a single building for their thermal energy usage.
• Monitor and balance energy flows.

BTU metering essentially involves inlet and outlet temperature measurement of heat transfer liquids, along with their flow rate. While the principle is simple, the intricacies of the measurement methods and equipment accuracy can have a substantial impact on the accuracy, and thus the benefit, of the measurement data. Additionally, adding more instrumentation to an already complex system can create an additional on-going maintenance and calibration burden to retain the necessary levels of accuracy and function. Success at gaining the benefit of the performance data while minimizing the additional maintenance burden due to the instrumentation should be the goal.

Click for larger image.

One solution calls for the use of clamp on ultrasonic flow meters to measure liquid flow, coupled with temperature measurement in a single unit that will perform necessary calculations and provide output data in useful engineering units. An overarching benefit of the clamp on meter is its non-invasive nature, allowing its retrofit to in-place systems with no disturbance to existing piping. Here are some other characteristics of a highly effective BTU measurement unit:

• No wear mechanism as part of the flow measurement unit
• Traceable accuracy of flow and temperature measurements
• Simple installation in new or retrofit applications without disruption to system operation
• Reliable and maintenance free operation
• Accurate measurement from near zero flow rate to maximum system flow
• Stable sensing with no zero drift
• Communications protocol to match building energy management system
• Large storage cache for data, in case of communication failure
• Common output signals, 4-20 ma or other, usable with selected ancillary equipment

Selecting the right equipment or instrumentation is the most important step along the path of adding measurement capability to increase efficiency. Without a solid stream of reliable data, useful decisions become difficult. Contact a product application specialist and share your goals and challenges. Leverage your own knowledge and experience with their product application expertise to develop an effective solution.

Clamp-on Ultrasonic Flow Measurement Advantages in Pipes and Storage Tanks

Clamp-on ultrasonic flow meter
(courtesy of Flexim)

In order to accurately pump and store fluids, reliable and accurate flow measurement is essential. Intrusive flow meters such as turbine meters and orifice plates are problematic when it comes to maintenance and long-term accuracy.

A better solution is a clamp-on, externally mounted, ultrasonic flow meter. These types of meters simply mount right to the outside of the process piping and do not expose the sensor to the process media. Nor do they require the pipe of vessel to be open for maintenance. Furthermore, they provide high accuracy and repeatability needed for leak detection and minimization of product losses.

Another advantage of using clamp-on flow meters is to use sonic velocity to determine what hydrocarbons are flowing through the pipe. Sonic velocity, when corrected for temperature change, is a good way to distinguish most hydrocarbons. By comparing the actual sonic velocity in a given application, and comparing it to known sonic velocity data, hydrocarbons at given temperatures can be identified.

This comes in particularly helpful in detecting interface changes. Different product batches are easily recognized by the meter. As interface changes are detected with a high degree of sensitivity, product mixups are significantly reduced.

Additional advantages of clamp-on, ultrasonic flow meters:

• No wear and tear - no clogging effects
• Quick and accurate detection of Interface changes - reducing amount of product mixing
• Accurate measurement on thick walled pipes and exotic pipe materials

Control Valve Selection - 8 Things to Remember

Cashco Control Valve

Choosing an improperly applied sized or improperly sized control valve can have serious consequences on operation, productivity and most important, safety. Here is a quick checklist of basics that need to be considered:

1. Control valves are not intended to be a an isolation valve and should not be used for isolating a process. 
2. Always carefully select the correct materials of construction. Take into consideration the parts of the valve that comes in to contact with the process media such as the valve body, the seat and any other "wetted" parts. Consider the operating pressure and operating temperature the control valve will see. Finally, also consider the ambient atmosphere and any corrosives that can occur and effect the exterior of the valve. 
3. Put your flow sensor upstream of the control valve. Locating the flow sensor downstream of the control valve exposes it to an unstable flow stream which is caused by turbulent flow in the valve cavity.
4. Factor in the degree of control you need and make sure your valve is mechanically capable. Too much dead-band leads to hunting and poor control. Dead-band is roughly defined as the amount of control signal required to affect a change in valve position. It is caused by worn, or loosely fitted mechanical linkages, or as a function of the controller setting. It can also be effected by the tolerances from mechanical sensors, friction inherent in the the valve stems and seats, or from an undersized actuator. 
5. Consider stiction. The tendency for valves that have had very limited travel, or that haven't moved at all, to "stick" is referred to as stiction. It typically is caused by the valves packing glands, seats or the pressure exerted against the disk. To overcome stiction, additional force needs to be applied by the actuator, which can lead to overshoot and poor control.
6. Tune your loop controller properly. A poorly tuned controller causes overshoot, undershoot and hunting. Make sure your proportional, integral, and derivative values are set).  This is quite easy today using controllers with advanced, precise auto-tuning features that replaced the old fashioned trial and error loop tuning method.
7. Don't over-size your control valve. Control valves are frequently sized larger than needed for the flow loop they control. If the control valve is too large, only a small percentage of travel is used (because a small change in valve position has a large effect on flow), which in turn makes the valve hunt. This causes excessive wear. Try to always size a control valve at about 70%-90% of travel.
8. Think about the type of control valve you are using and its inherent flow characteristic. Different types of valve, and their disks, have very different flow characteristics (or profiles). The flow characteristic can be generally thought of as the change in rate of flow in relationship to a change in valve position. Globe control valves have linear characteristics which are preferred, while butterfly and gate valves have very non-linear flow characteristics, which can cause control problems.  In order to create a linear flow characteristic through a non-linear control valve, manufacturers add specially designed disks or flow orifices which create a desired flow profile.

These are just a few of the more significant criteria to consider when electing a control valve. You should always discuss your application with an experienced application expert before making your final selection.