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Laurel Programmable Counters


The design of the Laureate™ Series is modular for maximum flexibility at minimum cost. The base configuration for a panel meter or counter consists of the main module (with computer and plug-in display boards), a power supply board, and a signal conditioner board. Optional plug-in boards include an isolated setpoint controller board, an isolated analog output board, and an isolated digital interface board. Modular design and a choice of plug-in options allow the Laureate to be customized for a broad range of applications from simple monitoring to control and computer interface. There can be up to five plug-in boards in a 1/8 DIN Laureate

The main module (with computer and display boards) defines the Laureate series (DPM, weight meter, counter, or remote display), version (standard or extended), and LED display color (red or green). The number of digits is 5 for DPMs or 6 for counters, weight meters and remote displays. LED digits are 14.2 mm (0.56″) high.

Power Supply Boards: The same standard switching power supply board handles inputs of 85-264 Vac for worldwide AC use, plus 90-300 Vdc. An optional low voltage power supply board handles 10-48 Vdc or 12-32 Vac, allowing the meter to be powered by 24 Vdc or by batteries. Isolated 5, 10 or 24 Vdc transducer excitation output is standard with either supply.

  • Normal Voltage: 85-264 Vac or 90-300 Vdc
  • Low Voltage: 10-48 Vdc or 12-32 Vac

Signal Conditioner Boards: Three input boards are selectable for counters: dual-channel pulse input, voltage-to-frequency converter for analog inputs, and quadrature for position or rate from encoder signals.

Relay Output Boards: Two isolated setpoint controller options are available to add alarm and control capability to DPMs, counters, timers and remote displays. Multiple operating modes are programmable:

  • Two or four 8A contact relays
  • Two or four isolated AC/DC solid state relays

Analog Output Boards: A single-channel isolated analog output board capable of 4-20 mA, 0-20 mA, 0-10V or bipolar ±10V output is available for DPMs, counters timers and remote displays. A dual-channel isolated analog output board capable of 4-20 mA, 0-20 mA or 0-10V or output is available for counters timers and remote displays. These board effectively turn their host meter into an isolated transmitter. The output is scaled and linearized to the display. The resolution is 16 bits.

  • Single-channel analog output, 4-20 mA, 0-20 mA, 0-10V, -10 to +10V
  • Dual-channel analog output, 4-20 mA, 0-20 mA, 0-10V

Serial Communication Boards: Isolated communication interface boards allow the Laureate to communicate with a computer or PLC. The two serial boards allow the Laureate to drive a remote display, or to serve as a remote display.

  • Ethernet (with RJ45 connector for Ethernet cable)
  • RS232 (with RJ11 connector)
  • RS485 (with dual RJ11 connectors for daisy-chaining)
  • RS485 (with dual RJ45 connectors for daisy-chaining)
  • USB 2.0 (with USB Type B connector for connection to PC)
  • USB-to-RS485 converter (with USB Type-B connector to PC & RJ11 connector to RS485 bus)
  • Ethernet-to-RS485 converter (with RJ45 connector for Ethernet cable plus RJ11 connector to RS485 bus)
  • Wi-Fi with internal or external antenna

Physical Characteristics: All Laureates meters are housed in a compact and rugged 1/8 DIN case which fits in a standard 45 x 92 mm panel cutout and requires only 102 mm (4.0″) behind the panel (plus connectors). The Laureate case is sealed to NEMA-4X (IP-65) requirements from the front when panel mounted to allow high-pressure wash-down. All power and signal connections are via detachable UL / IEC / CSA-rated screw-clamp terminals, which are standard. Serial communications are via industry-standard connectors.

  • Rate, Frequency, Period
  • Simultaneous Total & Rate
  • Time Interval, Stopwatch
  • Quadrature Position or Rate
  • Ratio / Draw
  • Batch Controller
  • Analog Totalizer
  • Phase Angle & Power Factor
  • Duty Cycle


  • ±999,999 Display Span
  • Scaling in Engineering Units
  • Crystal Time Base Error <0.001%
  • Sensor Excitation Output
  • 1/8 DIN, NEMA-4X Front Panel


  • 2 or 4  Relay Outputs
  • Isolated Analog Outputs
  • USB, RS-232, RS-485, Ethernet or Wi-Fi data I/O
  • Custom Curve Linearization
  • Datalogging PC Software

Exceptional flexibility is provided by advanced programmable features and by modular architecture with a choice of mainboards (basic or extended), signal conditioners (FR, VF or QD), power supplies, analog output, relay outputs, and serial data I/O.

The FR module provides two independently scalable frequency/pulse input channels. These channels can be combined arithmetically to display the sum or difference of two flows, the ratio of two rates, etc. As a counter, each channel may be independently set and scaled to count up to or down from a preset value. The displayed channel (A or B) is selected via the front panel pushbutton. The totals are stored in non-volatile memory & retained in the absence of power.

CE & ETL Approved.

Catalog Page 039                   Full Specifications (Laurel Website)


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