Laurel Panel Meters, Counters, Timers & Displays by Application
DC Voltage & Current
Display DC voltage or current from power supplies, batteries and other DC sources with 0.01% full scale accuracy. Options include analog outputs, relay outputs, and serial communications.
- DC voltmeter ranges from ±200.00 mV to ±600.0 V.
- DC ammeter ranges from ±2.0000 mA to ±5.000 A.
AC Power Line Monitoring
Accurately monitor AC or true RMS voltage or current, AC line frequency, or phase angle. Options include analog outputs, relay outputs, and serial communications.
- True RMS AC voltmeter ranges from 200.00 mV to 600.0 V.
- True RMS AC ammeter ranges from 2.0000 mA to 5.000 A.
- AC line frequency to 0.0001 Hz resolution in a few line cycles.
- Phase angle to 0.01° accuracy from 0 to 100 Hz, 0.1° accuracy from 0 to 1 kHz.
- Power factor to three decimal places with sinusoidal inputs.
- Large-digit frequency displays with 2.2" (57 mm) to 8" (200 mm) high digits
Process Signal Display & Control
Accurately display readings in scaled engineering units such as PSI, GPM, L/sec, or LBS from process transducers whose output may be a DC signal such as 4-20 mA or 0-10 V, a pulsed / AC signal, or a changing resistance. Capabilities include custom curve linearization, square root extraction, rate from successive readings, and totalizing from rate signals. Transducer excitation output is standard on most models. Analog outputs, relay outputs, and data I/O options add functionality.
- Laureate process meter for analog signals such as 0-1 mA, 4-20 mA, 0-10 V.
- Process totalizer & meter for 0-1 mA, 4-20 mA, 0-10V analog signals.
- Strain gauge & potentiometer follower meter for signals which are a changing resistance.
- Pulse input rate meter and totalizer for pulse signals from 0.005 Hz to 1 MHz.
- Large digit displays. Process meters, pulse input rate meters and pulse input totalizers with digit heights from 2.2" (57 mm) to 7.9" (200 mm).
Flow Rate, Flow Total, Batch Control
Accurately display flow rate or flow volume from flow transducers with a pulse or analog output. Read out flow or total to 5 or 6 digits in engineering units such as Gallons, GPM, or L/sec. Available features include square root extraction and custom curve linearization.
- Dual-channel Pulse input rate meter and totalizer. Display flow rate or flow total (volume), add or subtract two flows for net flow or net volume, or compute the ratio of two flows to control mixing operations.
- Analog input rate meter and totalizer. Accept 0-1 mA, 4-20 mA or 0-10 V analog signal from a linear or differential pressure flow transducer to display flow rate or flow total (volume).
- Pulse input batch controller. Control repeated fill operations usingֲ the pulse signal from a turbine flowmeter.
- Analog input batch controller. Control repeated fill operations usingֲ the 0-1 mA, 4-20 mA or 0-10 V analog signal from a linear or differential pressure flow transducer.
- Large digit displays. Analog input process meters, pulse input rate meters, and pulse input totalizers with 2.2" (57 mm) to 7.9" (200 mm) high digits.
Weight, Force, Stress, Tensile Strength
The transducers may be strain gauge elements which require bridge excitation, zero and span adjustment, high sensitivity, and multiple noise filtering modes. The transducers may also output a conditioned 4-20 mA or 0-10 V signal, which can be accepted by a Laurel process meter. Meter capabilities include high read rate to 60/sec, peak hold, custom curve linearization, and rate from successive readings. Analog outputs, relay outputs, and data I/O options add functionality.
- Load cell meter. Powers up to four 350-ohm bridges in parallel in 4 or 6-wire connection. Five-digit display, sensitivity to ±20 mV full scale.
- Strain meter. Powers up to four 350-ohm bridges in parallel in 4-wire connection. Five-digit display, sensitivity to ±200 mV full scale.
- Scale / weight meter. Special firmware for weighing applications. Features include display to 999,990, auto-zero, auto-tare or manual tare, and display toggle between gross or net weight.
- Large digit displays. For strain gauges and load cells. Digit heights 2.2" (57 mm) to 7.9" (200 mm).
Frequency, Rate, RPM, Speed
Display frequency, rate or RPM to six figure accuracy based on pulse signals at exceptionally fast update rates. Display rates to 0.01% accuracy based on an analog signal or a changing resistance. Features include square root extraction and custom curve linearization.
- Dual-channel frequency meter. Display frequency in Hz to six-figure accuracy from 0.05 Hz to 1 MHz.
- Dual-channel pulse input rate meter. Display rate or totalized rate, add or subtracts two rates or totals, or computes the ratio of two rates or totals.
- Analog input rate meter. Display rate in engineering units from a 0-1 mA, 4-20 mA or 0-10 V analog signal.
- Quadrature meter. Display speed or position based on quadrature signals.
- Potentiometer follower meter. Display speed or position based on the changing resistance of a linear displacement transducer.
- Large digit displays. Available for pulse input or process signals. Digit heights 2.2" (57 mm) to 7.9" (200 mm).
Temperature Measurement & Control
- Thermocouple Temperature Meter. High accuracy for 7 thermocouple types (J, K, T, E, N, S, R), each in one range. User-selectable thermocouple type, °C or °F, and 1° or 0° resolution. Wide range of options for communication and temperature control. Shipped ready to run.
- RTD Temperature Meter. Exceptional accuracy for Pt100 100-ohm platinum RTDs (DIN or ANSI alpha), Ni120 nickel and Cu10 copper. User selectable RTD type, unit of measure (°F or °C) resolution (1°, 0.1° or 0.01°), and 2, 3 or 4-wire hookup to eliminate lead resistance effects. Wide range of options for communication and temperature control. Shipped ready to run.
Resistance Measurement
- Ohmmeter with five jumper selectable resistance ranges from 20Ω to 200 KΩ. Also available with a fixed 2 MΩ range. Accuracy is an exceptional ±0.01% of full scale ± 2 counts. Resolution is one part in 20,000. In the 20Ω range, resolution is 1 mΩ, making the meter suitable for contact resistance and conductance measurements. Custom curve linearization makes this meter ideal for use with thermistors and other sensors whose output is a chaning resistance.
Pulse Counting, Digital or Analog Totalizing
Count discrete pulses, totalize pulse signals scaled to engineering units (e.g., volume in gallons from a turbine flow meter), or totalize analog process signals. Count up to a setpoint or down from a setpoint. Display rate or total using the same meter. With two pulse inputs, add or subtract two totals, or take the ratio of two totals.
- Dual-channel frequency meter. Display frequency in Hz to six-figure accuracy from 0.05 Hz to 1 MHz.
- Dual-channel pulse input totalizer. Display totals (such as flow volume) or flow rate, add or subtracts two totals or rates, or compute the ratio of two totals or rates.
- Process signal totalizer. Display totals in engineering units from a 0-1 mA, 4-20 mA or 0-10 V analog signal.
- Quadrature meter. Display speed or position based on quadrature signals.
- Large digit displays. Available for pulse input or process signals. Digit heights from 2.2" (57 mm) to 7.9" (200 mm).
Timing from Microseconds to Hours
Time single events in stopwatch mode, periodic events in time interval mode, duty cycle in percent, or time of day.
- Stopwatch meter. For single events from less than 1 µs to 999,999 hours. Timing resolution to 0.2 µs.
- Time interval meter. For periodic events from 1 µs to 199.99 s. Timing resolution to 0.2 µs.
- Duty cycle meter. Displays ON or OFF period as a percentage of total period.
- Large digit timers and clocks. Display in MM:SS, HH:MM, or HH:MM:SS.Digit with digit heights from 2.2" (57 mm) to 7.9" (200 mm).
MAGNA Series 2", 4", 6" or 8" Large-Digit Displays
Available with four or six 57 mm (2.2"), 102 mm (4"), 150 mm (6"), or 200 mm (8") high digits for process signal, strain gauge, load cell, temperature, and pulse inputs. Optional dual 5A relays, analog output, and serial output. Choice of display brightness and cases for indoor or outdoor mounting.
Laureate™ Series Digital Panel Meters
The Laureate Series is Laurel's flagship line of 1/8 DIN programmable 5-digit digital panel meters, 6-digit digital counters and timers, and 6-digit remote displays. Digit height is 14.2 mm (0.56").
Modular design, a wide choice of plug-in options, exceptional accuracy, high speed (up to 60 readings / second), scalability, plus programmable features allow Laureates to be configured for applications from simple monitoring to computer interface and control. Setup can be from the front panel or by using powerful Setup Software, which can be downloaded at no charge from our Software Download Page.
Datalogging Software turns a PC connected to up to 31 Laureate digital panel meters or digital counters into a powerful, low-cost datalogging system with virtual meter screen views plus arithmetic and totalizing capabilities.
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