Laurel Electronics Laureate Dual-Channel Pulse Input Totalizer - Manual (Page 4)

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 4
Combining Two Totals
A+B, A-B and A/B arithmetic functions are available with the
Extended counter. A+B sums both totals, while A-B subtracts
the outflow total from inflow total. The A/B ratio applied to total
helps assure the proper mixing of components.
Controller setup and monitoring of the mixing operation are
facilitated by optional serial communications. RS-485 allows a
single data line to handle multiple controllers.
Up or Down Counting with Preset
A single Laureate dual-channel counter will handle two
repetitive fill operations by counting from zero up to a preset, or
down from a preset to zero. A dual setpoint relay board is
required.
Machine ON Time and Utilization
An easy way to measure the ON time of machines is to count
AC line cycles and scale the total to hours. To display machine
utilization or duty cycle in percent, use the Extended counter.
Connect Channel A to switched AC and Channel B to the AC
line, and have the counter display the A/B ratio with a 100
multiplier.
Total and Rate Simultaneously
The Extended version of the Laureate dual channel counter can
display scaled rate or total for the same channel at the push of a
button, and alarm both the rate and total. The Extended version
can also do curve linearization, thereby extending the working
range and accuracy of flow transducers.
System-level Capabilities
The Laureate dual channel totalizer can
independently scale, display and alarm two
totals, and the totals plus alarm data can be
transmitted via RS-232 or RS-485. The
displayed totals can also be transmitted as an
isolated 4-20 mA or 0-10V analog output. The
Extended version can further display and
transmit arithmetic combinations of the two
totals.