Laureate Duty Cycle Meter

For display of ON or OFF period in percent

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Key Features

Measures ON or OFF period as a percentage of total period.
Resolution of 1%, 0.1% or 0.01%.
Trigger on positive or negative pulse edges.
Frequency from 0.005 Hz to 10 kHz.
6-digit red or green LED display.
Isolated 5, 10 or 24 Vdc excitation output to power sensors.
NEMA 4X, 1/8 DIN case.

Options

Serial communications: Ethernet Interface, Ethernet-to-RS485 server, USB Interface, USB-to-RS485 server, RS485 interface (dual RF11), RS485 Modbus interface (dual RJ45), RS232 interface.
Low voltage power: 10-48 Vdc or 12-32 Vac
Relay outputs: 2 or 4 relays, contact or solid state
Analog outputs: isolated 4-20 mA, 0-20 mA, 0-10V, 10 to +10V

Description

Duty cycle is a measure of ON or OFF period as a percentage of total period. Duty cycle is determined by averaging an integral number of periods over a gate time which is selectable from 10 ms to 199.99 s. The same signal is applied to Channels A and B. The meter divides the average pulse width by the period between pulses and expresses this ratio in percent. A resolution of 1%, 0.1% or 0.01% is selectable. By selecting leading or falling pulse edges, the ON or OFF duty cycle can be displayed.

Duty cycle measurement is used to monitor modulated proportional control systems and pulse-modulated systems, such as radar, lasers or packet radio. The Laureate duty cycle meter uses the FR dual-channel signal conditioner board and Extended counter main board. For time intervals longer than 199.99 s, duty cycle can be measured by using the A and B channels of to totalize AC line cycles and having the counter display the ratio of the two totals scaled in percent.

RTD signal conditioner board The Laureate dual-channel signal conditioner accepts inputs from proximity switches with an PNP or NPN output, TTL or CMOS logic, magnetic pickups, contact closures, and AC signals from 12 mV to 250 Vac. Jumper selections provide optimum operation for different sensor types and noise conditions. A built-in isolated 5, 10, or 24 Vdc excitation supply can power proximity switches and other sensors.

Designed for system use. Optional plug-in boards for communications and control include Ethernet and other serial communication boards, dual or quad relay boards, and anisolated 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. All power and signal connections are via UL / VDE / CSA rated screw clamp plugs.