The Laureate™ time interval and stopwatch timers use the FR dual-channel signal conditioner and either the Standard counter main board (time interval) or Extended counter main board (stopwatch). The Laureate time interval meter displays pulse width or time delay between pulses for single pulses or the average for multiple pulses. Time interval is measured between inputs on channels A and B. Timing starts when a pulse is applied to Channel A (selectable positive or negative edge) and ends when a pulse is applied to Channel B (selectable positive or negative edge). In case of a single pulsed signal, the A and B inputs can be tied together. A positive or negative slope may be selected to start timing, and the opposite slope must be selected to stop timing.

Timing is achieved by counting 5.5 MHz clock pulses. Multiple integral time intervals are averaged over a gate time which is selectable from 10 ms to 199.99 s and also controls the display update time. The default display is in µs. Display resolution down to 0.2 µs can be achieved by applying a multiplier of 10, moving the decimal point by one position, and averaging many time intervals. Resolutions up to 1 s or greater are also programmable.

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. The display is updated continuously during timing.

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. The event time (Item #1) may be displayed in HH.MM.SS clock format with 1 s resolution or in H, M or S seconds with six-digit resolution . The longest timing interval is 99 hours. The highest resolution is 1 ms.

The stopwatch display is updated during timing at a rate controlled by 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.

The dual-channel signal conditioner used for pulse detection accepts inputs from proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickups, contact closures, and other signals from 12 mV to 250 Vac. Nine hysteresis and input levels are jumper selectable for reliable triggering. A 1600 Hz low-pass roll-off filter for noise reduction and contact debounce times of 3 ms or 50 ms are also selectable.

A built-in isolated 5, 10, or 24 Vdc excitation supply can power proximity switches and other sensors, and eliminate the need for an external power supply.

Plug-in isolated analog output, dual setpoint controller and RS232/485 communications or BCD output boards can upgrade the Laureate from a stand-alone monitor to system interface and control. Laureate meters and counters meet NEMA 4X (IP-65) standards from the front for high pressure washdown when panel mounted. All power and signal connections are via plug-in screw-clamp connectors.