Lysis Flow Computer and Data Logger



Navigation:

– General Description
– Data Aquisition Features
– Configuration Features
– Data Logging and Analysis Tools
– Hardware Features
– Process Inputs and Characteristics
– Net Fuel Consumption Version
– Performance Specifications

 Downloads:

- Lysis Brochure (.pdf)
- Lysis Software Description (.pdf)
- Lysis Manual (.pdf)
- Demo Software
(use "def" as password for configuration of the software - case sensitive)

The Lysis Flow Computer and Data Logger is an ideal combination of high performance, user friendliness and low cost. It can be configured with up to 8 channels for monitoring Flowmeters of any type or manufacture in all types of processes:

Liquid and Gas
Volumetric and Mass

A practically unlimited number of flowmeters and fluid types can be pre-programmed into the computer and selected with the push of a button.
With the miniature Condat signal processing interface which communicates via serial port with a laptop PC (any desk top PC can be used as well), this is a truly a portable solution to flow computing and data logging.

The tried and proven CFlow+ LabView/Windows based data acquisition operating software ensures optimal man-machine interface and ease of operation.

Traceability to National and International Standards (PTB, BNM, NIST) is easily maintained through the use of appropriately calibrated flowmeters.

Data Aquisition Features: [top]

Lysis is a LabVIEW/Windows development. It is the culmination of years of effort and testing to ensure a simple and intuitive user interface behind which the most accurate flow calculation algorithms operate seamlessly and efficiently.
In the main user interface screen (2-channel version shown), values of all critical parameters can be viewed in real time at a glance:
- Volumetric or Mass Flow Rate and Total
- Flowmeter raw Output
- Fluid Properties

The Log function allows for the long-term storage (Data Logging) of all measured and calculated values associated with each flow channel.

Monitored data can be observed in real time in numerical as well as graphical forms by activating the Chart window (right).



The Config button allows authorized personnel to customize the software to take advantage of the many powerful features that are available while maintaining simplicity of the user interface (left).

Configuration Features: [top]

- Extensive Diagnostics in graphical form
- Totalizing functions
- Advanced Data Logging
- Two levels of Password protection
- Flow Control Selector (Mass, volume, etc.)
 - Flowmeter Properties editing/selection
- Fluid Properties editing/selection
- Engineering Unit selector
- Hardware Configuration editor
- Net Fuel Consumption (A – B) calculation

Data Logging and Analysis Tools: [top]

The Lysis Data Logging function allows for the long-term storage of all measured and calculated values associated with each flow channel.

Log Rate (how often a new sample is gathered and added to the log file) and Sample Duration (the length of time over which flow measurements are averaged) are operator selectable.

The collected data are stored into a log file in the PC. The log file size is limited only by the size of the hard disk on the computer and the operating system.

Data log files are stored in spreadsheet (Excel) format for easy importation into other programs and customization.
The Analysis portion of Lysis displays simultaneously up to 4 of the flowmeter parameters which are stored during the data logging process.
Zoom-in and -out feature allows detailed data analysis over desired time intervals.

Hard copies of displayed graphs can be printed with the press of the Print button.

Additional data evaluation and analysis is possible with MS Excel or similar programs.

Hardware Features: [top]

Lysis has been designed to be reliable and highly portable. A Notebook PC is normally supplied but any current Windows PC can also be used if portability is not an issue.

All digital and analog signal processing is performed within the compact Condat interface unit which communicates with the PC via serial interface. The Condat hardware has built in capability to accept input from any flowmeter or transducer that generates TTL pulse and 0-5 VDC or 4-20 mA analog signals.

Smart Cables (with built-in amplifiers) are available for flowmeters with non-TTL compatible frequency outputs (Magnetic, Modulated Carrier, etc.).

Double Chronometry is used to eliminate timing errors and improve overall accuracy.

Temperature and Pressure inputs are included for flow correction in liquid and gas applications.

Process Inputs and Characteristics: [top]

Lysis supports up to 8 flowmeter channels which can be operated and monitored simultaneously.

Any type/make of Liquid or Gas flowmeter can be used:
- Frequency generating, volumetric or mass
                TTL or 0-10 V pulse
                (Turbines, Coriolis, Vortex, etc.)
- Analog, mass or volumetric
                4-20 mA, 0-5/0-10 VDC
                (Thermal Mass, Coriolis, DP, etc.)

Cubic Spline curve fitting is used for compensation of any flowmeter non-linearities.

Temperature inputs for compensation of the effects of changes in the density and viscosity of liquids.

Pressure inputs for compensation of the effects of compressibility (deviations from the ideal gas law) in gas applications.

Net Fuel Consumption Version: [top]

The Lysis Flow Computer is also available in a Net Flow version which features A-B capability for applications such as Net Fuel Consumption measurement of diesel engines. This is accomplished by subtracting the flow indicated by meter B (return) from the flow indicated by meter A (supply).

Individual and net fuel flow is displayed and recorded in volumetric and mass units as is the totalized net flow.

The Net Flow Lysis variant retains all the features of the standard version, such as linearization of flowmeters, Temperature correction, data logging, etc.

Performance Specifications: [top]

Lysis inherently offers high levels of flexibility since it allows different types of flowmeters to be selected in order to achieve optimal accuracy under actual process conditions. The data below are given only as reference. Our Application Engineers should be consulted to help determine the best type of flowmeters for each application.
 

Flow Range:





Accuracy:


Repeatability:


Pressure Range:

Temp. Range:

 Depends on flowmeter used.
For applications with clean liquids Turbine meters are recommended.
For most gas applications Thermal Mass flowmeters are recommended.
Flowmeters must be selected for compatibility with process conditions and
accuracy requirements.

As good as +/- 0.10 % of Reading, depending on the type of flowmeter used and the application conditions.

As good as +/- 0.02% of Reading, depending on the type of flowmeter used and the application conditions.

Up to 700 bar or more, depending on the type of flowmeters used.

Up to 500 °C or more, depending on the type of flowmeters used.