Laurel Electronics, Inc
Laurel Electronics, Inc. designs, manufactures and sells programmable digital panel meters, counters, timers, remote displays, transmitters and other instrumentation for demanding industrial applications.
- (714) 434-6131
- support@laurels.com
- 3183-G Airway Avenue
Costa Mesa, CA 92626
United States of America
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product
Model QLS 4-20 mA Loop Splitter / Retransmitter
Generates up to four individually grounded and individually adjustable 4-20 mA loops from a single 4-20 mA or 0-10V input. Overcomes problems which occur when the same 4-20 mA signal is applied to multiple loads in series. Allows outputs to have different grounds, and allows individual loops to be opened without affecting signal to other loads.
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Large Bargraph Process Display
PRO-BAR Series
50-segment bar graph meter with 250 mm (10") scale length for 4-20 mA, 0-1 mA, 0-10V, or 1-5 V signals. Available for vertical or horizontal mounting. Large bargraph is viewable over long distance in industrial environments.
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1/8 DIN Bargraph Process Display
BAR Series
30-segment bar graph meter with 75 mm (3") scale length for 4-20 mA, 0-1 mA, 0-10V, or 1-5 V signals. Optional dual-relay output.
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Batch Controller (pulse input)
A low-cost controller for repetitive fill operations. The typical application utilizes a flow meter input and two built-in relays: a Prewarn relay slows down the pump near a preset to avoid overshoot and a Batch relay stops the pump at the preset.
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Loop-Powered Digital Panel Meter
88-PRO
The 88-PRO Process Meter may be connected directly to a 4-20 mA, 10-50 mA or 1-5 mA current loop, with no need for additional power to the meter. This is because the meter is powered directly by the current loop, developing a maximum voltage drop of 2.5 V.
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A+B, A-B, AxB, A/B, A/B-1 Draw Meter
Arithmetic functions (+, -, /, x) on dual channels A and B open a world of possibilities. For example, add or subtract rates from two flow meters for combined scaled flow or volume. Display the ratio of flow rates, RPM of rollers, or speed of moving belts. Draw, which is obtained by subtracting 1 from ratio, can be used to indicate elongation or shrinkage of material as it passes between rollers.
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2", 4", 6", 8" or 11" Large-Digit Displays
Grand Series
Available with 57 mm (2.2"), 102 mm (4.0"), 144 mm (5.7"), 200 mm (7.9"), or 280 mm (11.0") digit height for clock, timer, totalizer, frequency and rate inputs. RS-422 and dual-relay output options.
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Duty Cycle Meter
Displays ON or OFF period as a percentage of total period over a programmed gate time from 10 ms to 199.99 s. A resolution of 1%, 0.1% or 0.01% is user-selectable. Applications include monitoring modulated proportional control systems and pulse-modulated systems, such as radar, lasers or packet radio.
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Linearizing Panel Meter
All capabilities of the Laureate process meter, plus custom curve linearization. Setup is easy using an external PC and linearizing software furnished by Laurel. For example, display liquid volume in irregularly shaped tanks, use with non-linear transducers, or extend the working range of nominally linear transducers.
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Modbus or Laurel ASCII ProtocolSerial Output DIN Rail Transmitters
Laureate TM Series serial output transmitters can be jumpered for two signal levels: RS232 or RS485. Two serial protocols are selectable in software: Modbus or Laurel's Custom ASCII.Modbus protocol operation is fully compliant with the Modbus Over Serial Line Specification V1.0 (2002) for 2-wire, half-duplex connection.
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Process Meter & Totalizer
User-scalable for display to 999,999 for 0-1 mA, 4-20 mA, or 0-10 V process signals requiring zero and span adjustment. Ideal as flow rate meter or flow totalizer for analog flow meter signals. Includes 5, 10, 24 V transducer excitation output (user-selectable).
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Wall-Mount Enclosure
Model BOX
Model BOX is a wall-mount / bulkhead enclosure which provides environmental protection to IP65 / NEMA-4X. It comes with a 1/8 DIN panel cutout (45 x 92 mm) and can be used with 1/8 DIN instruments with a depth up to 134.5 mm (5.30"). This includes all 1/8 DIN instruments sold by Laurel Electronics.
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Laureate Time Interval Meter
Model FRI
Configured to time periodic events which produce start and stop pulses from 1 s to 199.99 s over a programmed gate time up to 199.99 s. Timing resolution to 0.2 s. Optional data I/O and relays for alarm or control. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.
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Quadrature Position & Rate Meter
Accepts low-level differential or single-ended 5 V logic level quadrature signals from shaft encoders to display scaled position or scaled rate. One, two or four transitions may be counted at a maximum combined rate of 250 kHz and be mathematically scaled to display in engineering units from -999,999 to +999,999. An analog output scaled to the display and relay outputs are optional.
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True AC RMS Panel Meter
The Laureate? True RMS meter offers a high accuracy 4 1/2 digit display for five voltage ranges and four current ranges. It is suited for AC applications where there is considerable distortion of current waveforms from nonlinear loading. The input is AC coupled to read only the AC component, such as ripple on a power supply.
