Digital Panel Meters & Counters for Frequency, Rate, RPM, Speed

Product Selection Guide
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Laurel digital panel meters are available to display frequency in Hz or rate in scaled engineering units such as ft/sec, GPM, L/sec or RPM. A universal dual-channel signal conditioner accepts pulse from proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickups, contact closures, low-level outputs from turbine flow meters down to 12 mV, and high-level AC line inputs up to 250 Vac. Rate can also be displayed from process signals such as0-1 mA, 4-20 mA, 0-10 V, from quadrature signals, and from changing resistances in potentiometer follower applications. Dual channel digital panel meter for frequency, rate, RPM, speed

Two independent channels display frequencies from 0.005 Hz to 1 MHz. Exceptional fast readings to six-figure accuracy. AC line frequency may be measured to 50.0000 or 60.0000 Hz in a few line cycles. 1000 Hz signals may be measured to 0.01 Hz resolution at up to 25 readings per second. Also displays period, the inverse of frequency. Optional analog output, relays, and data I/O. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.

Laurel Dual Channel Frequency Meter

Two independent pulse input channels can be scaled to display rates or totals in engineering units such as GPM, L/sec, ft/sec, or Gallons. Dual-channel signal conditioner accepts inputs from proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickups, contact closures, low-level inputs down to 12 mV, and high-level AC line inputs to 250 Vac. Allows square root extraction, custom curve linearization. Dual channels allow addition, subtraction or ratio of rates or totals. Includes isolated transducer excitation supply. Fast read rates with peak hold. Optional analog output, relays, and data I/O. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.

Laurel Dual Channel Pulse Input Rate Meter

This digital panel meter totalizes 0-1 mA, 4-20 mA or 0-10 V analog signals, for example to display totalized volume from the 4-20 mA analog signal of a flow meter transducer. Capabilities include zero and span adjustment, square root extraction from differential flow meter signals, custom curve linearization, and elapsed time based on rate (for example, the time it will take to fill a tank at the current flow rate. Optional data I/O and relays for alarm or control. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.

Laurel Analog Input Process Meter

Displays rate or total from 0-1 mA, 4-20 mA or 0-10 V analog signals (for example to display watts or kwatt-hours from a power transducer with 0-1 mA analog output). Capabilities include zero and span adjustment, square root extraction for differential flow meter signals, custom curve linearization, and elapsed time based on rate (for example, the time it will take bread to traverse an oven). Optional data I/O and relays for alarm or control. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.

Laurel Analog Input Rate & Totalizing Meter

A high-sensitivity 5-digit meter for use with load cells, strain gauges and microvolt input signals where high accuracy and stability are required. Load cell operation allows 4- or 6-wire hookup and display in engineering units, such as lbs, kg or psi. Built-in excitation for up to four 350-ohm load cells in parallel.

Laurel Quadrature Rate & Position Meter

In linear displacement transducer or potentiometric pot follower applications, the signal from a sliding contact voltage divider is converted to position units such as feet, cm, or mm. Speed is automatically obtained from successive readings. High 1 GOhm input resistance on 2 V scale. Display scaled in engineering units from -99,999 to +99,999. Five 0.56" (14.2 mm) high digits, 1/8 DIN case.

Linear Displacement Meter, Laureate Model P

Available with 4 or 6 digits and a digit height of 2.2" (57 mm), 4" (102 mm), 6" (144 mm), or8" (200 mm) for long viewing distances. Available for frequency and rate inputs 50 kHz. Scalable to engineering units. Optional dual 5A relays, analog output, and serial data output. Choice of display brightness and cases for indoor or outdoor mounting.

Magna Series Large Digit Digital Panel Meters and Remote Displays
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