Laurel Products by Type
Product Selection Guide

Programmable Counters & Timers Available with red or green display.

1.	Frequency & Rate Meter Two independent scalable pulse-input channels from 0 Hz to 1 MHz. Channels may be combined arithmetically. One channel can display total while other displays rate. High read rate for control applications. Ideal for use as a tachometer or readout of a turbine flow meter.
2.	Totalizer (pulse input) Two independent scalable pulse-input channels. Count up or down to a preset at rates up to 1 MHz. Scaled rate and total from the same electronic counter. Scaling for direct readout in engineering units, such as gallons or cubic feet based on counts from a turbine flow meter. One channel can display total while the other displays rate.
3.	Totalizer (analog input) Displays and totalizes 0-1 mA, 4-20 mA, or 0-10 V process signals. Square root extraction is standard for flow applications, allowing display of volume from the 4-20 mA signal of a flow transducer with a linear or squared output.
4.	A+B, A-B, AxB, A/B, A/B-1 Draw Meter Arithmetic functions (+, -, /, x) on dual pulse-input channels. 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. Display draw, obtained by subtracting 1 from ratio, to indicate elongation or shrinkage of material between rollers.
5.	Batch Controller (pulse input) A low-cost controller for repetitive fill operations. Provides a flow meter input and two built-in relays: a Prewarn relay to slow to down the pump near a preset to avoid overshoot, and a Batch relay to stop the pump at the preset. Fill cycles repeat after a programmed time interval or based on an external input.
6.	Batch Controller (analog input) Same capabilities as the Laureate pulse-input batch controller, but for 0-1 mA, 4-20 mA, or 0-10 V process signals, as made possible by a voltage-to-frequency (V-to-F) converter. Square root extraction is standard for use with flow meters.

7.	Digital Stopwatch Times events which produce start and stop pulses. Displays time in HH.MM.SS clock format with 1 sec resolution or in H, M or S format with six-digit resolution. Single-event times may range from 1 µs to 99 hours with a timing resolution to 0.2 µs. Multiple events can also be accumulated to 999,999 hours.
8.	Time Interval Meter Times periodic events from 1 µs to 199.99 s over a programmed gate time up to 199.99 sec with a timing resolution to 0.2 µs.
9.	Power Factor & Phase Angle Meter Exceptionally fast response (20 updates per second) for low frequencies, such as AC line frequency. Phase angle resolution of 1º, 0.1º or 0.01º is user-selectable. Phase angle accuracy is 0.01% up to 100 Hz, 0.1% at 1 kHz, and 1% at 10 kHz. Also power factor measurement from 1.000 to 0.000 with sinusoidal signals.
10.	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 sec. A resolution of 1%, 0.1% or 0.01% is user-selectable.
11.	Quadrature Position & Rate Meter Accepts low-level differential or single-ended 5 V logic level quadrature signals from shaft encoders or linear encoders to display scaled position or scaled rate in engineering units from -999,999 to +999,999. Options include an analog output scaled to the display.

Digital Panel Meters Available with red or green display.

1.	DC Digital Panel Meter Exceptional accuracy and high read rate with five digital voltmeter ranges from 200.00 mV to ±600.0 V and four digital ammeter ranges from ±2.0000 mA to ±5.000 A, all factory pre-calibrated. Shipped ready to run.
2.	Process & Strain Meter User-scalable for display to ±99,999 for process signals requiring zero and span adjustment, such as 0-1 mA, 4-20 mA, or 0-10 V. Ideal for use with pressure transducers (manometer applications) or flow meters. Includes a 5, 10, 24 V transducer excitation output (user-selectable).

3.	True AC RMS Panel Meter Five AC RMS voltmeter ranges to 200.00 mV to 600.0 V and four AC RMS ammeter ranges from 2.0000 mA to 5.000 A, all factory pre-calibrated. Shipped ready to run.
4.	Thermocouple Temperature Meter High accuracy in one instrument for seven thermocouple types (J, K, T, E, N, S, R), each in one range. User-selectable thermocouple type, °C or °F, and 1° or 0.1° resolution. Pre-calibrated for all sensor types. Wide range of options for communication and temperature control. Shipped ready to run.
5.	RTD Temperature Meter Exceptional accuracy RTD temperature meter 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. Pre-calibrated for all RTD types. Wide range of options for communication and temperature control. Shipped ready to run.
6.	Load Cell & Microvolt Meter 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.
7.	Ohmmeter Factory calibrated for five jumper selectable resistance ranges from 20 Ω to 200 KΩ. Exceptional accuracy of ±0.01% of full scale. In the 20-ohm range, resolution is 1 milliohm, making the meter suitable for contact resistance measurements. 2, 3 or 4 wire connection to eliminate lead resistance effects.
8.	Scale / Weight Meter Equipped with a DC or load cell signal conditioner, plus special firmware for scale / weighing applications. Display to 999,990. Built-in excitation for up to four 350-ohm load cells in parallel.
9.	Linearizing Panel Meter All capabilities of the Laureate process and load cell meter, plus custom curve linearization. Setup is easy using an external PC and linearizing software 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.
10.	Junior Series Digital Panel Meter Low-cost, screwdriver-adjusted 3 1/2 digit indicators for process signals (4-20 mA, 1-5 V, etc.), DC, AC avg, and AC rms (voltage & current). No control outputs.14.2 mm (0.56") high digits, 1/8 DIN case.
11.	88-PRO Loop-Powered Digital Panel Meter Scalable process meter powered by 4-20 mA, 10-50 mA or 1-5 mA current loop, with no need for external power. 12.7 mm (0.50") high LCD digits, 1/8 DIN case.
12.	M-35 Microminiature Digital Process Meter Fits 22.5 x 45 mm cutout. Accepts 4-20 mA, 0-10 mA, 0-2 V, 1-5 V, or 0-10 V signals. Powered from 10-30 Vdc.

35 mm DIN Rail Transmitters

1.	Isolated 4-20 mA or 0-10V Output Transmitters Available for all the same signals types as Laureate digital panel meters, counters and timers. Exceptional accuracy at high update rates. Optional dual relays for alarm or control. Serial interface standard. Easily set up via a PC using Instrument Setup Software.
2.	Isolated Serial ASCII or Modbus Output Transmitters Also available for all the same signals types as Laureate digital panel meters, counters and timers. Can be connected to a PC in addressable multidrop fashion from a single RS-485 line using either the industry-standard Modbus protocol or Laurel's simpler Custom ASCII Protocol. Optional analog output and dual relays for alarm or control.
3.	Isolated Serial to Analog Converter Accepts RS-232 or RS-485 serial data with Modbus or Laurel ASCII Protocol, and converts it to an isolated, scalable 4-20 mA or 0-10V analog output signal.

Serially Driven, Addressable Remote Displays Available with red or green display.

1.	6-Digit, 1/8 DIN Remote Displays These accept RS-232 or RS-485 serial data from computers, programmable controllers, and Laureate meters or counters to provide a visual display from -999,999 to +999,999. They can also be configured to provide alarms and analog outputs based on the serial data.

2.	Grand Series 2", 4", 6", 8" or 11" Large-Digit Displays Available in 57 mm (2.2"), 102 mm (4.0"), 144 mm (5.7"), or 200 mm (7.9") digit height. For serial ASCII input, clock, timer, DC, process signal, strain gauge, totalizer, frequency, or rate input. RS-422 and dual-relay output options.

Bar Graph Displays

1.	BAR Series 1/8 DIN Bargraph Process Display 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.
2.	PRO-BAR Series Large Bargraph Process Display 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.

Digital Panel Meter & Counter Peripherals

Splash-proof cover, Model IPC. Allows a 1/8 DIN digital panel meter, counter, timer or other 1/8 DIN instrument to meet IP-67 / NEMA-4 from the front when panel mounted.	Sealed wall-mount enclosure, Model BOX1. Sealed on all sides to IP-65 / NEMA-4. Includes 1/8 DIN panel cutout and three wire glands. Available as BOX2 with IPC splash-proof cover.

Triple Output Current Loop Splitter / Retransmitter, Model TLS. Splits one 4-20 mA or 0-10 mA current loop into three independently scalable output current loops.	3-Pole, 12-Throw Rotary Signal Selector Switch, Model SW. Switches up to 12 signals such as thermocouples, RTDs (2- and 3-wire) or voltage signals by means of a rotary knob.

Data Logging Software can turn a PC connected to any mix of Laureate digital panel meters, counters, timers and transmitters into a powerful datalogging system. The Laureates can be connected to the PC in addressable multidrop fashion from a single RS-485 line using either the Modbus protocol or Laurel's simpler Custom ASCII Protocol.

Products by Type

Digital Panel Meters

Electronic Counters

Programmable Timers

Transmitters, 4-20 mA

Transmitters, Modbus

Large Digit Displays

Bar Graph Displays

Meter/Counter Options

Meter Accessories

Data Logging Systems

Meters by Application

DC Volts & Amps

AC Power Monitoring

Flow Rate Total Batch

Weight, Load, Stress

Frequency, Rate, RPM

Temperature Control

Resistance in Ohms

Pulse & Analog Totals

Timing Products

Position Length Speed

Mixing, Ratio, Sum

Remote Serial Display