Features
- 6-digit display of rate or totalized rate, totalizer flow meter, field scalable
- High accuracy: ±0.005% of span ±1 count
- 0-1 mA, 4-20 mA or 0-10 V analog signal to a frequency of 10 kHz to 110 kHz
- Converts signal input to a scaled rate or totalized rate
- Selectable square root for differential flow
- Output accuracy maintained for narrow or wide spans
- Extracts square root from differential pressure flow transducers & flow totalizer
- All input ranges are user selectable and factory calibrated
- Digital span adjustment: 0 to ±999,999; zero adjustment: -999,999 to +999,999
- Front panel scalable: 0 to ±999,999 for use with current shunts
- 1/8 DIN size with bright red or green 0.56" (14.2mm), high LED digits
- Transducer excitation output, 5, 10, 12, or 24 Vdc (isolated)
- Power 85-264 Vac / 90-300 Vdc or 10-48 Vdc / 12-32 Vac (isolated)
- Operating temperature from -40°C to 70°C (-40°F to 158°F)
- Wide choice of Plug-in-Play options:
- 2 or 4 relays, mechanical or solid state, for alarm or control (isolated)
- 1 or 2 Analog output, 4-20 mA, 0-20 mA, 0-10V, or -10V to +10V (isolated)
- Communications: Ethernet, WiFi, USB, RS232, RS485 (isolated)
- Extended DPM allows up to 180 data points for custom curve linearization, time based on rate, batch control
The Laureate™ 1/8 DIN Panel Meters is a six-digit display of rate or total at the push of a front panel key.
A Laureate with the Standard counter main board and a VF voltage-to-frequency signal conditioner board can be scaled to display rate or totalized rate to six digits for 0-1 mA, 4-20 mA or 0-10V analog process signals to a frequency of 10 kHz to 110 kHz. Special input ranges are available from the factory. For example, the display can be scaled to show flow rate in gallons/minute or liters/sec, or to show volume in gallons or liters from the 0-10V output of a flow transducer. Or the display can be scaled to display power consumption in kilowatts or total utilized energy in kilowatt-hours based on the 0-1 mA output of a watt transducer.- Square root extraction is selectable and can be applied to rate or total. This makes the VF Laureate ideal for use with differential pressure flow meters, which have a squared output. Totalized volume is based on linearized rate.
- Accuracy is one of the highest for panel meters: ±0.005% of span ±1 count.
Laureate Panel Meters are easily programmed with Laurel’s free Instrument Setup Software, downloadable from our website and compatible with Windows PCs, requiring a data interface board for setup.
All signal conditioner board ranges are factory-calibrated, with calibration factors for each range securely stored in an onboard EEPROM. These factors can be scaled via software to accommodate external shunts, enabling field replacement of signal conditioner boards without necessitating recalibration of the associated panel meter.s For optimal accuracy, factory recalibration is recommended annually. All Laurel Electronics instruments undergo factory calibration using the industry-leading Fluke calibrators, which are recalibrated yearly and certified traceable to national standards, ensuring the highest level of precision and reliability.
Extended DPM Counter Version
- Batch control based on linearized total. A Laureate VF meter with the Extended counter main board can totalize linearized flow from an analog rate signal, and also count up to a preset value, or count down to zero from a preset value for batch control. Operation as a batch controller requires the dual-relay output board option. One of the relays is dedicated to ON/OFF batch control. The other relay is available to slow down rate near the setpoint or to provide another alarm or control function based on rate or total.
- Custom Curve Linearization. For custom curve linearization, up to 180 data points can be input into a spreadsheet or text file by the user. The computer then calculates spline-fit segments, which are downloaded into panel meters via RS232. The Extended VF meter can linearize and display analog inputs based on a custom curve, for instance to read out the volume of an irregularly shaped tank based on level or pressure, or to linearize a nonlinear transducer. Custom-linearized rates can also be totalized and be used for batch control.
- Time Based on Rate. The Extended VF meter can display a time inversely proportional to measured rate, such as the time that it will take a conveyor to traverse an oven. As the rate of the conveyor is increased, the displayed baking time is decreased.
Principles of V-to-F Operation
The V-to-F signal conditioner board converts the full-scale 0-1 mA, 4-20 mA or 0-10 V analog signal to a frequency of 10 kHz to 110 kHz. This frequency is determined by measuring period over a selected gate time (from 10 ms to 200 s) and taking the inverse of period. Selecting a short gate time provides a much higher update rate than conventional counting-type frequency meters. At the lowest frequency of 10 kHz and the minimum gate time of 10 ms, the panel meters are capable of 25 updates per second. Scaling to rate in engineering units and totalizing are done mathematically. Totals are calculated as the product of rate and time in seconds regardless of the selected gate time. Totals are stored in nonvolatile memory in case of power loss.
High Resolution Display
The display of rate or total may be scaled to ±999,999. The two least-significant digits may be set to display zero with rounding or be active digits. Noise in rate readings can be reduced by selecting a longer gate time. In addition, an adaptive digital filter can reduce variations due to noise while rapidly responding to actual changes in signal level.
- An unfiltered selection provides true peak and valley readings and aids in control applications.
- A batch average filter selection averages each 16 conversions.
- An adaptive moving average filter selection provides a choice of 8 time constants from 80 ms to 9.6 seconds. When a significant change in signal level occurs, the filter adapts by briefly switching to the shortest time to follow the change, then reverts back to its selected time constant. An Auto setting selects the time constant selection based on signal noise.
Peak and valley values are automatically captured. These may be displayed via a front panel pushbutton command or control signal at the rear connector, or be transmitted as serial data.
Two rear panel control Inputs (CMOS/TTL levels, logic 0 = tied to digital ground, logic 1 = open) or dry contacts that can be set to control / activate 14 meter commands.
An (isolated) 5, 10, 12, or 24 Vdc excitation output is standard to power transducers or two-wire transmitters. Ratiometric operation, which automatically compensates for changes in the applied excitation, is jumper selectable for applications, such as bridges, where the signal to be measured is proportional to the excitation level.
Display | |
---|---|
Readout | 6 LED digits, 7-segment, 14.2 mm (.56") |
Color | Red or green LED |
Range | -999,999 to +999,999 |
Indicators | Four LED lamps |
Inputs | |
Standard signal levels | 4-20 mA, 0-1 mA, 0-10V (jumper selectable) |
Input resistance | 50Ω at 4-20 mA, 1.00 kΩ at 0-1 mA, 1.01 MΩ at 0-10V |
Other signal levels | Consult factory |
Recalibration: All ranges are calibrated at the factory. Recalibration is recommended every 12 months. | |
Conversion | |
Frequency Technique | Inverse period |
Update Rate | Gate time + 30 ms (max) |
Gate Time | Selectable 10 ms to 199.99 s |
Accuracy | |
Span tempco | ±0.003% reading/°C |
Zero tempco | ±0.003% FS/°C |
Accuracy at 25°C | ±0.01% FS ± 1 count |
Power Supply Boards (one required) | |
Voltage, standard | 85-264 Vac or 90-300 Vdc |
Voltage, optional | 12-32 Vac or 10-48 Vdc |
Frequency | DC or 47-63 Hz |
Power consumption (typical, base meter) | 1.2W @ 120 Vac, 1.5W @ 240 Vac, 1.3W @ 10 Vdc, 1.4W @ 20 Vdc, 1.55W @ 30 Vdc, 1.8W @ 40 Vdc, 2.15W @ 48 Vdc |
Power Isolation | 250V rms working, 2.3 kV rms per 1 min test |
Excitation Output (standard) | |
5 Vdc | 5 Vdc ± 5%, 100 mA (jumper selectable) |
10 Vdc | 10 Vdc ± 5%, 120 mA (jumper selectable) |
12 Vdc | 12 Vdc ± 5%, 100 mA (jumper selectable) |
24 Vdc | 24 Vdc ± 5%, 50 mA (jumper selectable) |
Output Isolation | 50 Vdc from signal ground |
Analog Output Boards (one optional) | |
Output levels | 4-20 mA, 0-20 mA, 0-10V, -10 to +10V (single-output option) |
4-20 mA, 0-20 mA, 0-10V (dual-output option) | |
Current compliance | 2 mA at 10V ( > 5 kΩ load) |
Voltage compliance | 12V at 20 mA (< 600 Ω load) |
Scaling | Zero and full scale adjustable from -99999 to +99999 |
Resolution | 16 bits (0.0015% of full scale) |
Isolation | 250V rms working, 2.3 kV rms per 1 min test |
(dual analog outputs share the same ground) | |
Relay Output Boards (one required for batch control) | |
Dual magnetic relays | 2 Form C, 10A max, 440Vac or 125Vdc max, 2500VA or 300W |
Quad magnetic relays | 4 Form A (NO), 10A max, 440Vac or 125Vdc max, 2500VA or 300W |
Dual solid state relays | 2 Form A (NO), AC or DC, 0V - 400V, 120Ma, 35Ohms (max at On-State) |
Quad solid state relays | 4 Form A (NO), AC or DC, 0V - 400V, 120Ma, 35Ohms (max at On-State) |
Relay commons | Isolated commons for dual relays or each pair of quad relays |
Relay isolation | 250V rms working, 2.3 kV rms per 1 minute test |
Relay latching modes | Latching or non-latching |
Relay active modes | Active on or off, active high or low |
Hysteresis modes | QA passband mode, split hysteresis, span hysteresis |
Communication Boards (one optional) | |
Board selections | RS232, RS485 with dual RJ11 connectors, RS485 with dual RJ45 connectors, USB, Ethernet, USB-to-RS485 gateway, Ethernet-to-RS485 gateway, WiFi with built-in antenna plus USB & RS485, WiFi with external antenna plus USB & RS485 |
Protocols | Laurel Custom ASCII (serial), Modbus RTU (serial), Modbus TCP (Ethernet or WiFi) |
Digital addresses | 247 (Modbus), 31 (Laurel ASCII), |
Isolation | 250V rms working, 2.3 kV rms per 1 min test |
Environmental | |
Operating temperature | -40°C to 70°C (-40°F to 158°F) |
Storage temperature. | -40°C to 85°C (-40°F to 185°F) |
Relative humidity | 95% at 40°C, non-condensing |
Protection | NEMA-4X (IP-65) when panel mounted |
Electrical Connections | |
![]() |
|
Mechanical | |
Enclosure | 1/8 DIN, high impact plastic, UL 94V-0, color: black |
Mounting | 1/8 DIN panel cutout required: 3.622" x 1.772" (92 mm x 45 mm). |
Dimensions | 4.68" x 2.45" x 5.64" (119 mm x 62 mm x 143 mm) (W x H x D) |
Maximum panel thickness | 4.5 mm (0.18") |
Tightening Torque - Connectors | Screw terminal connectors: 5 lb-in (0.56 Nm) |
Tightening Torque - Pawls | Digital Panel Meter Case Pawls: 5 lb-in (0.56 Nm) |
Weight of base meter | 210 g (7.4 oz) typical (DPM, counter, timer, 6-digit remote display) |
Weight of option boards | 30 g (1.0 oz) typical per board (analog output, relay output, communications) |
General | |
Programming Methods | Four front panel buttons or via Laurel's free Instrument Setup Software, which runs on a PC under MS Windows. |
Security | Lockout options include using the front panel buttons, the free Instrument Setup Software, or a hardware jumper. |
Warranty | 3 years parts & labor |
Recalibration: All ranges are calibrated at the factory. Recalibration is recommended every 12 months. |
Free Instrument Setup Software for Series 2 Laureates
Free Downloadable Windows-based Instrument Setup (IS) software (Data Interface Board Required) for use with our programmable Digital Panel Meters, Scale Meters, Counters, Timers, Remote Displays, and Transmitters, are an easy method to set up Laureate 1/8 DIN digital panel meters, counters, timers, remote displays, and DIN-rail transmitters, as explained in the Instrument Setup Software Manual. Laureate 1/8 DIN instruments can also be set up from the front panel, as explained in their respective Owners Manuals. Instrument Setup software is of benefit whether or not the PC is connected to the instrument.
- When the PC is connected to the instrument, Instrument Setup software can retrieve the setup file from the instrument or open a default setup file or previously saved setup file from disk View Setup, then provides graphical user interface (GUI) screens with pull-down menus applicable to input, display, scaling, filtering, alarms, communications, analog output, and front panel lockouts. Fields that are not applicable to the instrument as configured are either left out or grayed out. Clicking on any item will bring up a detailed Help screen for that item. After editing, the setup file can be downloaded, uploaded to the instrument, or saved to a disk. The same setup file can then be downloaded into multiple instruments.
- When the PC is not connected to the instrument, the above GUI screens can be used to set up a virtual instrument. The setup file can then be saved to disk. Switching toView Menu then brings up a screen with the required front panel programming steps. This view can be printed out for use at the instrument site and to serve as a hard copy record.
Download Free Instrument Setup Software
Installation
Set User Account Control (UAC) of MS Windows to "Never notifiy me" so that Instrument Setup Software can create directories. The UAC change screen can be reached as follows:
- Under Windows 7, click on the Windows Start button in the lower left of the desktop and enter "UAC" in the search field.
- Under Windows 8, navigate to Control Panel, then to the "User Accounts and Family Safety" section, and click on "Change User Account Control Settings."
- Under Windows 10, click on the Windows Start button in the lower left of the desktop, then on "Settings", and enter "UAC" in the search field.
- Reboot your computer for the changed UAC setting to take effect.

RJ11-to-DB9 cable with rear view of DB9 connector to PC

RS232 cable, meter to PC, P/N CBL01
Laureate 1/8 DIN Laureate instruments must be equipped with a serial communications board and be connected to the computer via a serial communications cable. The connection can be via RS232, RS485, USB or Ethernet. Following setup, the serial communications board may be removed from the instrument if desired. The wiring of the RS232 cable is illustrated above with end views of the two connectors.
Laureate LT Series transmitters come standard with a 3-wire serial interface, which can be jumpered for RS232 or RS485.
Laureate LTE Series transmitters come standard with an Ethernet interface.
Meter Setup Screens
Click on any of the reduced screens below for a full-size screen view, then click on the Back button of your browser to return to this page. The screens examples below are for a fully-loaded Series 2 Digital Panel Meter (DPM), which is connected to the PC via RS232. If the meter is a Series 1 meter (pre-2007), this is sensed by the software, and somewhat different screens are brought up. Please see Series 1 setup screens.











Meter Setup Utilities




From the Main Menu, click on Readings if your PC is connected to the meter. A pull-down menu then offers three choices: List, Plot and Graph.
- List presents the latest readings in a 20-row by 10-column table. Press Pause at any time to freeze the display. This is one method to capture peak readings.
- Plot generates a plot of readings vs. time in seconds. It effectively turns the DPM-PC combination into a printing digital oscilloscope.
- Graph generates a histogram where the horizontal axis is the reading and the vertical axis is the number of occurrences of readings. The display continually resizes itself as the number of readings increases.


Laureate™ 1/8 DIN Case For Laureate Digital Panel Meters, Counters, Timers & Remote Displays

Key Features
- Meets 1/8 DIN Standard.
- Installs from front of panel.
- Short depth behind the panel: only 4" (102 mm) plus connectors.
- Understated 0.157" (4 mm) thick bezel.
- Meets NEMA 4X (IP-65) for high-pressure wawshdon when panel mounted.
- Screw clamps connectors meet VDE / IEC / UL / CSA safety standards.
- Rugged GE Lexan® housing material.
- Safety certified per EN 61010-1.
Dimensions

Maximum panel thickness: 4.5 mm (0.18")
Weight of base meter: 210 g (7.4 oz) typical (DPM, counter, timer, 6-digit remote display)
Weight of option boards: 30 g (1.0 oz) typical per board (analog output, relay output, communications)
Tightening Torque - Connectors: Screw terminal connectors: 5 lb-in (0.56 Nm)
Tightening Torque - Pawls: Digital Panel Meter Case Pawls: 5 lb-in (0.56 Nm)
Dimensioned CAD assembly drawings in EPRT, STEP, x_t. dwg, pdf file formats: Laureate-meter-case.zip (zipping prevents browser from opening CAD files as text files).
Panel Mounting
Slide the meter into a 45 x 92 mm 1/8 DIN panel cutout. Ensure that the provided gasket is in place between the front of the panel and the back of the meter bezel.
The meter is secured by two pawls, each held by a screw, as illustrated. Turning each screw counterclockwise extends the pawl outward from the case and behind the panel. Turning each screw clockwise further tightens it against the panel to secure the meter.
Turning each screw counterclockwise loosens the pawl and retracts it into its well. This position allows installed meter to be removed from their panel, or new meters to be installed in a panel. Do not remove the screws from their pawls. Doing so would cause the screw and pawl to fall off and likely get lost. Do not overtighten so as not to damage the plastic parts.
Flow from a Differential Pressure Transducer | |
---|---|
![]() |
An ideal application for the Standard Laureate VF meter: readout of flow based on the 4-20 mA analog signal from a differential pressure transducer. Options include dual relays for alarm or control, isolated analog output to turn the meter into a transmitter, and RS232/485 data communications.s |
Up- or Down-Counting Batch Controller | |
![]() |
An ideal application for the Extended Laureate VF meter: up- or down-counting batch controller. The dual-relay card is required. One relay is dedicated to batch control, the other relay is available to alarm the rate or total. The signal input can be linear or nonlinear. The display can be toggled between rate and total. |
Volume of an Irregularly-Shaped Tank | |
![]() |
The Extended Laureate VF meter can linearize analog signals for display and alarm using custom curve linearization with multiple nonlinear segments. As illustrated, tank level is measured by an ultrasound detector, which transmits a 4-20 mA signal. This signal is then converted to a highly accurate volume reading. Linearized readings can also be totalized. |
Process Time from an Analog Rate Signal | |
![]() |
A unique application of the Extended Laureate VF meter is displaying process time based on the 4-20 mA or 0-10 V signal from a rate meter. In this example, a tachometer transmits the speed of a conveyer belt through an oven. The meter displays baking time in the oven using the mathematical relationship time = distance / speed. |
IPC
Splashproof Cover
CBL01
RS232 Cable for Meters
CBL02
USB-to-RS232 Adapter Cable
CBL04
RS232 Cable for LT Transmitters
CBL05
USB Data Cable for Meters
CBL06
USB-to-RS485 Adapter Cable
CBL07
USB Programming & Data Cable
CBL08
RS485 Splitter Cable
BKBD
RS485 RJ11 Terminal Block Adapter
Modular Design for Maximum Flexibility at Minimum Cost
All boards are isolated from meter and power grounds. Optional Plug-in-Play boards for communications and control include Ethernet, WiFi, serial communication boards, dual or quad relay boards, and an analog output board. Laureates may be powered from 85-264 Vac or optionally from 12-32 Vac or 10-48 Vdc. The display is available with bright red or green 0.56" (14.2mm) high LED digits. The 1/8 DIN case meets NEMA 4X (IP65) specifications from the front when panel mounted. Any setup functions and front panel keys can be locked out for simplified usage and security. A built-in 5, 10, 12, or 24 Vdc excitation supply can power transducers, eliminating the need for an external power supply. All power and signal connections are via UL / VDE / CSA rated screw clamp plugs.
The Laureate™ Series features modular design with up to 7 isolated plug-in boards, applicable to all Laureate 1/8 DIN Panel Meters.
Modular Hardware
The design of the Laureate™ Series is modular for maximum flexibility at minimum cost. All boards are isolated from meter and power grounds. The base configuration for panel meters or counter consists of a main module (with computer and plug-in display boards), a power supply board, and a signal conditioner board. Optional plug-in-play 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.

Connecting Laureate Panel Meters to a Local Area Network (LAN)
Up to 30 Laureate Panel Meters and/or LT Transmitters can be configured for RS485 and daisy-chained to an LT Transmitter using Laurel’s High Speed Ethernet-to-RS485 converter board for seamless LAN integration. Alternatively, Laurel LTE series Ethernet transmitters can connect directly to a LAN via an Ethernet cable. Setup for both configurations is streamlined using Laurel’s free Instrument Setup Software, which simplifies node discovery and transmitter configuration.
Flexible Communication Options for Panel Meters
Laureate Panel Meters can be equipped with Laurel communication boards to support various interfaces and protocols. These include serial interfaces with ASCII or Modbus RTU protocols, and Ethernet interfaces with web access, ASCII, or Modbus TCP/IP protocols, ensuring versatile connectivity for your commercial applications.
Understanding 1/8 DIN Panel Meters for 6-Digit Analog Input Totalizer & Process Meter
Introduction
In the realm of industrial automation and process control, precise measurement and monitoring of process variables are critical for ensuring operational efficiency, safety, and quality. 1/8 DIN Panel Meters for 6-Digit Analog Input Totalizer & Process Meter are specialized instruments designed to deliver accurate, real-time data for a wide range of applications. These Panel Meters excel at measuring, displaying, and totalizing analog input signals, making them indispensable in industries where cumulative and instantaneous data are essential. This section explores their functionality, features, technical specifications, and applications.
What are 1/8 DIN Panel Meters?
1/8 DIN Panel Meters are electronic instruments used for displaying measurements in a digital format. The term "1/8 DIN" refers to their standardized size, defined by the Deutsches Institut für Normung (DIN), the German Institute for Standardization. These Panel Meters typically measure approximately 96 mm x 48 mm (3.78 x 1.89 inches), making them compact and ideal for integration into control panels where space is limited. Their versatility and precision make them suitable for monitoring various process variables across multiple industries.
6-Digit Display
The 6-digit display on these Panel Meters is a key feature, enabling high-resolution readouts up to 999,999. This level of precision is crucial for applications requiring detailed measurement, such as tracking small changes in flow rates, pressure, or energy consumption. The high-digit count ensures that operators can monitor even minute variations in process variables with clarity.
Analog Input Totalizer
The analog input totalizer function allows these Panel Meters to sum analog input signals over time, providing cumulative measurements. This is particularly useful for applications like tracking total flow in pipelines, total energy consumption in facilities, or total material processed in manufacturing. These Panel Meters support common analog inputs, such as 4-20mA or 0-10V, offering flexibility to interface with various sensors and transducers.
Process Meter
As process meters, these Panel Meters measure and display a wide range of process variables, including temperature, pressure, flow, level, and more. They convert analog input signals into meaningful real-time data, enabling operators to monitor and control processes effectively. The ability to handle diverse inputs makes these Panel Meters adaptable to numerous industrial applications.
Key Features and Benefits
-
High Precision: The 6-digit display ensures accurate capture and display of even the smallest changes in analog input signals, critical for precise process control.
-
Versatility: These Panel Meters support multiple analog input types, making them suitable for industries like manufacturing, energy, and water treatment.
-
Compact Size: The 1/8 DIN size allows these Panel Meters to fit seamlessly into space-constrained control panels, optimizing panel layout.
-
Totalization Functionality: The built-in totalizer accumulates analog input values over time, providing valuable data for analysis, reporting, and regulatory compliance.
-
User-Friendly Interface: Featuring clear digital displays and intuitive controls, these Panel Meters enable efficient monitoring and decision-making.
-
Robust Construction: Designed with rugged enclosures and high IP ratings (e.g., IP65), these Panel Meters withstand harsh industrial environments.
Technical Specifications
Typical specifications for 1/8 DIN Panel Meters for 6-Digit Analog Input Totalizer & Process Meter include:
- Input Types: 4-20mA, 0-10V, or other analog signals.
- Accuracy: ±0.1% of full scale or better.
- Display: 6-digit LED or LCD with customizable brightness and decimal points.
- Power Supply: 12-24V DC or 85-265V AC.
- Communication: RS-232, RS-485, Modbus RTU, or Ethernet.
- Environmental Rating: IP65 or higher for front panel protection.
- Operating Temperature: -10°C to 50°C, suitable for industrial environments.
Applications
1/8 DIN Panel Meters for 6-Digit Analog Input Totalizer & Process Meter are used across various industries, including:
- Manufacturing: Monitoring and controlling production processes, such as material flow or pressure, to ensure quality and efficiency.
- Energy: Tracking total energy consumption or power output in power plants and renewable energy systems.
- Water Treatment: Measuring and totalizing flow rates or chemical levels in water processing facilities.
- HVAC: Monitoring environmental parameters like temperature or pressure in heating, ventilation, and air conditioning systems.
Conclusion
1/8 DIN Panel Meters for 6-Digit Analog Input Totalizer & Process Meter are vital tools in industrial and process control sectors. Their ability to provide precise, real-time data, combined with their compact size and versatility, makes them indispensable for monitoring and totalizing process variables. These Panel Meters enhance efficiency, safety, and quality across a wide range of applications, ensuring reliable performance in demanding environments.
Less Information.