Laurel Laureate AC Voltage & Current Panel Meter
True RMS AC voltage & current meter with 1 cycle update at 50/60 Hz
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- 0.2, 2, 20, 200 & 600V AC or AC+DC voltage ranges
- 2, 20, 200 mA & 5A AC or AC+DC current ranges
- True AC RMS measurement with crest factor of 3.0 at full scale
- Fast response: reading in 0-16.7 ms after each signal cycle to full accuracy
- Accurate to 0.03% of full scale, 0.1% to 100% of FS, 10 Hz to 10 kHz
- Universal 85-264 VAC / 90-300 VDC or 10-48 VDC / 12-32 VAC power
- Wide choice of options:
- 2 or 4 relays, mechanical or solid state (isolated)
- Analog output, 4-20 mA, 0-10V, or -10V to +10V (isolated)
- Serial data I/O: Ethernet, USB, RS485, RS232 (isolated)
- Custom curve linearization, rate from consecutive readings
The Laurel Laureate™ is a 60,000 count True RMS digital panel meter with exceptional performance at half the price of a bench top meter. It can measure true RMS voltage or current of AC signals where there is considerable distortion of the waveform, such as rectifier outputs or waveforms chopped by an SCR, TRIAC or transistor circuit.
The Laurel Laureate™ has a basic accuracy to 0.03% of full scale for signals from DC to 10 kHz and signal amplitudes down to 0.1% of full scale. The crest factor (Vp / Vrms) is 3.0 at full-scale Vrms of 20,000 counts and a Vp of 60,000 counts. The meter starts to flash overrange at 132% of full scale Vrms , at which point the available crest factor is 60,000 / 26,400 = 2.27. Meaningful readings with rated peak and valley readings that occur at the nominal rate of 50/60 Hz. resolution continue to be obtained up to 212% of full scale Vrms (42,433 counts) for sinusoidal signals, at which point the available crest factor is 1.414. For safety reasons, the maximum RMS input signal should never exceed 600V or 5A. ETL certification is for a maximum voltage of 300 Vrms.
True RMS readings in 0-16 ms after completion of one input signal cycle allow the Laureate to detect anomalies before they become expensive problems. Fast on/off control and alarm can be achieved with optional dual or quad relays, either contact or solid state. The meter can also capture
AC or DC coupling is jumper selectable on the signal conditioner board. AC coupling accommodates signals from 10 Hz to 10 kHz and is suitable for applications such as measuring AC ripple on a DC power supply. DC coupling accommodates signals from 0 to 10 kHz. Multiple integral cycles are averaged for signals above 50/60 Hz. A single cycle is captured for signals from 3 Hz to 50/60 Hz. Below 3 Hz and at DC, the capture rate is 3/sec.
The Laurel Laureate™ AC voltage & current panel meter is 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 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. All power and signal connections are via UL / VDE / CSA rated screw clamp plugs.
This product can be used in the following applications: