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Laurel Electronics provides
digital panel meters / controllers, totalizers, counters, loop-powered meters,
temperature meters, for all types of transducers or process indication &
control.
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Laureate™ Datalogging Software
Creates a datalogging system from
Laureate panel instruments and a PC.
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Concept |
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Laurel's datalogging software turns a PC connected to up to 31 Laureate instruments into
a powerful, low-cost datalogging system. The Laureates
can be any mix of digital panel meters and counters,
excluding only remote displays.
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| Data can be displayed
on
the computer screen in the form of up to 64 simulated
panel meters in 4 groups (or screens) of up to 16 meters
each. The on-screen simulated meters can show the readings
and alarm indications of selected actual meters, or show
values other than those normally displayed by meters, such
as peak value. They can also show calculated parameters or
weighted averages that combine data from multiple meters.
For example, a virtual meter can display watts, obtained
by multiplying the current reading from one meter and the
voltage reading from another meter. Available operands are
multiply, divide, add, and subtract, with parentheses to
allow complex expressions. A virtual meter can also
totalize analog readings over time, for example to display
kilowatt-hours from watts, or totalized volume from flow
rate. The on-screen position and appearance of individual
meters is user selectable to achieve meaningful groupings. |
| Data can be logged
from selected meters into an ASCII file, which is easily
imported into MS Excel for graphing and analysis. User
settable parameters include the logging time interval in
seconds, the separator character (normally a comma), and
header data (with or without time and date). Data files
can be password protected. |
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Hardware |
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31 Laureates can be connected to the PC in
addressable multidrop fashion using using a single
RS-485 line. Each Laureate must be equipped with an RS-485
board. A single Laureate can be connected to a PC
using an RS-232 line. That Laureate must be equipped
with an RS-232
board. |
| The computer must be PC
compatible, operate under MS Windows 95 or higher, and
have an available COM1 or COM2 serial port. |
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Sample
Screens |
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Common
Setup Screen for Simulated Meters
This screen allows selection of the number of meters
per group (up to 4 groups), default meter colors,
and default font size for meter captions. |
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Meter
Setup for Groups 1 & 2
This screen allows for setup of I.D., Caption, Type,
Serial Address, and Item Number for each meter. The
Type can be DPM, Counter, Weight Meter, or Virtual
Meter. For a weight meter, the Item Number to be
displayed can be Net, Gross, or Peak. For Hardware
(or actual) meters, Setpoint 1, Setpoint 2, and
Decimal Point can be entered. For Virtual meters, a
formula is entered. |
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Screen
Setup for Group 1
This screen provides for the spatial layout of the
meter to be displayed for Group 1. Right-clicking on
any meter brings up a window with allows selection
of font size and color scheme for that meter. In the
example show, Meter 4 has a green and yellow custom
color scheme. |
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Datalogging
Setup Screen
This screen specifies the Comm Port (1 or 2) and
Baud Rate (300 to 19200). It also allows individual
meters to be selected for datalogging |
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Datalogging
Start Screen
This screen allows final setup before running. The
Display Interval and Datalogging Interval can be
individually set in seconds. The Data Separator
(normally a comma) can be reset. Selectable
parameters are a Header Record, and for each data
record, a Time Stamp, Date Stamp, Alarm Data, and
Zero Suppression. |
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Datalogging
Run Screen for Group 1
The display is updated for each meter in real time,
including any alarm indications, while data is also
written to disk. Similar screens are available for
Groups 2-4. |
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Typical
Help Screen
Pressing on Help on the top menu bar brings
comprehensive help screens, avoiding the need for a
printed manual for the Datalogging Software. The
screen to the left is for the Demo Mode, which does
not require a connection to actual meters. |
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FLW,
Inc - 3505
Cadillac Ave - Bldg E - Costa Mesa, CA. - 92626 - USA - Ph (714) 751 -
7512 - Fax (714) 751 - 0213
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