Laurel Electronics Laureate Digital Stopwatch & Timer - Manual

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 1
LAUREL
ELECTRONICS, INC.
Laureate™ Digital Stopwatch & Timer
Resolution to 0.2 µs for single or cumulative events.
Displays highly accurate rate based on 1 / time.
Features
• Times single events or accumulated time from 1 µs to 999,999 hrs
• Timing resolution to 0.2 µs
• Selectable HH.MM.SS clock format or decimal format
• Inputs from NPN or PNP proximity switches, contact closures, digital logic,
magnetic pickups down to 12 mV, or AC inputs up to 250 Vac
• Triggers on positive or negative pulse edges
• External controls for reset, meter hold and decimal points
• Universal AC power, 85-264 Vac
• Isolated 5, 10 or 24 Vdc excitation supply to power sensors
• NEMA 4X, 1/8 DIN case
• Optional serial I/O: Ethernet, USB, RS232, RS485, Ethernet-to-RS485 converter
• Optional relay outputs: dual or quad relays, contact or solid state
• Optional isolated analog output: 4-20 mA, 0-20 mA, 0-10V, -10 to +10V
• Optional low voltage power: 10-48 Vdc or 12-32 Vac
• Optional Extended Timer: features of standard timer plus rate based on 1/time
Description
The Laureate stopwatch meter is designed to time single
events, such as sporting events or processes, which produce
start and stop pulses. It can also time the width of a single pulse.
Highest resolution is 0.2 µs, since timing is achieved by counting
5.5 MHz clock pulses. For long intervals, the display is updated
continuously during timing. Laureate™ stopwatch timers use the
FR dual-channel signal conditioner and Standard counter main
board.
• A-A Stopwatch Mode. Time can be measured between a
start pulse and a stop pulse, both on Channel A, from either
the positive or negative edges.
• A-B Stopwatch Mode. Time can also be measured between
a start pulse on Channel A (positive or negative edge) and a
stop pulse on Channel B (positive or negative edge). This
mode allows inputs from different sources. In addition, the A
and B inputs can be tied together to start the stopwatch with
one polarity and stop it with the other polarity.
• Rate Based on 1/Time Mode. Highly accurate rate can be
displayed by taking the inverse of time. Extensive arithmetic
capabilities allow display in engineering units, such as
meter/sec. This mode requires use of an Extended counter.
Display. The event time (Item #1) may be displayed H, M or S
format with six-digit resolution. The longest single-event timing
interval is 999,999 hours. The highest resolution is 0.2 µs. The
event time may also be displayed in HH.MM.SS clock format with
1 s resolution. The stopwatch display is updated during timing
at a rate controlled by a gate time, up to 25/s. It is reset to zero
when the next start pulse occurs. Accumulated time from multiple
events (Item #2) is also tracked and may be displayed up to
999,999 hours.
Inputs to the FR dual-channel signal conditioner can be
proximity switches with PNP or NPN output, TTL or CMOS logic,
magnetic pickups, contact closures, low-level outputs from
turbine flow meters down to 12 mV, and high-level AC line inputs
up to 250 Vac. A built-in isolated 5, 10, or 24 Vdc excitation
supply can power proximity switches and other sensors, thus
eliminating the need for an external power supply.
Digital filtering is selectable for electrically noisy environments,
including a batch averaging filter and an adaptive moving aver-
age filter which provides a choice of 8 time constants from 80 ms
to 9.6 s. When a significant change in signal level occurs, that
filter adapts by briefly switching to the shortest time constant to
follow the change, then reverts back to the selected time con-
stant. In a selectable Auto filter mode, the filter time constant is
automatically selected based on detected signal noise.
Designed for system use. Optional plug-in boards include
Ethernet and other serial communication boards, dual or quad
relay boards, and an isolated analog output board. Laureates
may be powered from 85-264 Vac or optionally from 12-32 Vac
or 10-48 Vdc. The display is available with red or green LEDs.
The 1/8 DIN case meets NEMA 4X (IP65) specifications from the
front when panel mounted. Any setup functions and front panel
keys can be locked out for simplified usage and security. A built-
in isolated 5, 10, or 24 Vdc excitation supply can power trans-
ducers and eliminate the need for an external power supply.
All power and signal connections are via UL / VDE / CSA rated
screw clamp plugs.