Features
- Two independently scalable totals for Channels A & B
- Inputs from NPN or PNP proximity switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC inputs up to 250 Vac
- Two independently field-scalable pulse input channels from 0.005 Hz to 1 MHz
- Up counting from zero to preset value using positive scale factor
- Down counting from preset to zero using negative scale factor
- Totals stored in non-volatile memory
- 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 version - See below for all capabilities
Certificates of Compliance
The Laureate 1/8 DIN Digital Panel Meters for dual-channel up or down totalizer
is a Standard operating mode of the Laureate counter with the FR dual-channel signal conditioner board that can display frequencies from 0.005 Hz to 1 MHz. Each channel (A or B) may be independently set up and scaled to count up from zero (or other value) to a preset limit, or to count down from a preset value to zero (or other limit). Countdown operation is set up by entering a negative scale factor.The six-digit counter display is capable of displaying any value from -999,999 to 999,999 with a programmable decimal point. Scaling allows direct readout in engineering units, such as gallons or cubic feet based on counts from a turbine flowmeter, or the count of cans based on the count of six-packs. The displayed channel (A or B) is selected via a front panel pushbutton. The totals are stored in non-volatile memory so as to be retained in the absence of power.
The minimum recommended complementary option for the Laureate totalizer is the dual setpoint controller output board, which is available with either 8A relays or AC/DC solid state relays.
Laureate Digital 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 digital panel meters. 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.
An Optional Extended DPM Provides Capabilities Beyond Those of the Standard Counter:
- Rate and total simultaneously. Channel A can display total while Channel B displays rate. The selection of A or B for display is via a front panel pushbutton. This mode is ideal for flow applications.
- Up/down counting. Channel A can serve as an up/down counter, where the count direction is dynamically changed by applying a signal to Channel B. For instance, Channel A can count and scale pulses from a turbine flow meter, while Channel B inputs the direction of flow. This allows total volume to be tracked in case of reversible flow.
- Totalizing with external inhibit. Totalizing by Channel A can be temporarily inhibited by applying a signal to Channel B. For instance, 60 Hz AC pulses can be counted by Channel A and be scaled to display elapsed hours. A signal can be applied to Channel B to start or stop pulse counting when a process is in operation.
- Custom curve linearization. Exceptionally accurate custom curve linearization is achievable, for example to linearize the low end of turbine flow meters. For setup, 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 the meter via RS232. The linearized rate can then be totalized by the Extended counter.
- Arithmetic functions. The Extended counter makes arithmetic functions available, namely A+B, A-B, AxB, A/B and A/B-1. These solve many applications. For instance, A+B allows two input flows to be summed for total volume, while A-B allows outflow to be subtracted from inflow for net volume. A/B allows the mixing of ingredients in a specified ratio. By monitoring and alarming the A/B volume ratio, ingredient B can be added to A until the proper ratio is achieved.
The FR dual-channel signal conditioner accepts inputs from proximity switches with a 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. Jumper selections provide optimum operation for different sensor types and noise conditions. A built-in (isolated) 5, 10, 12, or 24 Vdc excitation supply can power proximity switches and other sensors, and eliminate the need for an external power supply.
Digital signal filtering modes can be selected to ensure stable readings in electrically noisy environments.
- 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.
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 Digital 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 a panel meter 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 Digital Panel Meters to a Local Area Network (LAN)
Up to 30 Laureate Digital 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 Digital Panel Meters
Laureate Digital 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.
| Display | |
|---|---|
| Readout | 6 LED digits, 7-segment, 14.2 mm (.56"), red or green. |
| Color | Red or green LED |
| Display Range | -999,999 to +999,999, XXXXEX notation beyond 999,999 |
| Zero Adjust | -999,999 to +999,999 |
| Span Adjust | 0 to ±999,999 |
| Indicators | Four LED lamps |
| Inputs | |
| Types | AC, pulses from NPN, PNP transistors, contact closures, magnetic pickups. |
| Signal Ground | Common ground for channels A & B |
| Channel A Freq. | 0 Hz to 1 MHz |
| Channel B Freq. | 0 Hz to 250 kHz |
| Minimum Signal | Nine ranges from (-12 to +12 mV) to (+1.25 to +2.1V). |
| Maximum Signal | 250 Vac |
| Noise Filter | 1 MHz, 30 kHz, 250 Hz (selectable) |
| Contact Debounce | 0, 3, 50 ms (selectable) |
| Recalibration: All ranges are calibrated at the factory. Recalibration is recommended every 12 months. | |
| 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 |
| 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 |
| 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 optional) | |
| 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 |
| Signal 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
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| 1/8 DIN Digital Panel Meters | DIN Rail Transmitters |
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.
Welcome Screen
From the computer desktop, click on Start > Programs > IS2 > IS2. Or click on the IS icon on your desktop. This splash screen will be displayed for three seconds. The software revision number is in the lower right.
Communications Selection Screen
Specify your desired communication protocol and the serial communications bus type, which should match the jumper setup of the instrument. Select None if the PC is not connected to the instrument.
Establish Communications Screen
If you selected RS-232, you will be asked to specify the PC Com Port and Baud Rate, which should match the jumper setup of the instrument. Click on Establish. With the right settings, the Communications Established field will light up in green, and the Meter Type will be recognized. If so, click onMain Menu.
Main Menu Screen
Click on File > Default Setup to retrieve the default setup file from disk for your type of meter. Click on File > Open Setupto retrieve a previously saved setup file from disk or on File > Save Setup to save your edited setup file to disk. Click onDPM > Get Setup to retrieve the setup file from your meter or on DPM > Put Setup to download your edited setup file into the meter.
DPM Input + Display Setup Screen
From the Main Menu, click on View > Setup, then on theInput+Display tab. You can now specify the meter hardware, signal type, display mode, and functions of control inputs A and B. Clicking on any item brings up a pull-down menu with the available choices.
DPM Scaling Setup Screen
Click on the Scaling tab, which provides three scaling methods to relate the signal to the displayed reading: 1) Scale and Offset method, 2) Coordinates of two points method, and 3) Reading Coordinates of Two Points method. The last method uses actual high and low signals, and the computer will prompt you.
DPM Filter Setup Screen
Click on the Filter tab, which allows you to specify the digital filter time constant (if any), the adaptive filter threshold, and whether Peak / Valley values are filtered or unfiltered. As for all setup screens, clicking on the F1 key while an item is highlighted brings up a Help screen for that item, as illustrated.
DPM Relay Alarms Setup Screen
Click on the Relay Alarms tab, which allows you to set up Alarms 1 and 2 for the optional dual relay output board. Clicking on any of the four numeric fields changes these to green and brings up a special field to enter the desired numeric value, which is tied to the displayed reading.
DPM Communications Setup Screen
Click on the Communications tab so set up serial communications. In particular, you can special the Serial Protocol and the meter address if multiple meters are to be addressed on the same serial data line.
DPM Analog Output Setup Screen
Click on the Analog Out tab so set up the optional analog output board. Three output ranges are selectable, the endpoints of which can be tied to user-specified High and Low readings.
DPM Lockouts Setup Screen
Click on the Lockouts tab to check off menu items which will no longer be accessible from the front panel of the meter. This will simplify meter operation and prevent unintended setup changes.
Meter Setup Utilities
DPM Front Panel Setup Screen
As an aid to programming the meter from the front panel when a serial connection is not available, you can return to the Main Menu and click on View > Menu. The required sequence of front panel screens will then be displayed. Click on any step in the sequence for the meaning of each digit, as illustrated for the FILtEr step. For a hardcopy, simply press on Print.
DPM Jumper Setup Screen
Specify your desired communication protocol and the serial communications bus type, which should match the jumper setup of the instrument. Select None if the PC is not connected to the instrument.
DPM Jumper Setup Screens
Click on any of the displayed plug-in boards, and you will be presented with the jumper positions and electrical connections for your selected board. This minimizes the need to refer to the printed manual.
DPM Commands Screen
This page allows you set up external input, serial communications, an analog output proportional to the display (optional), and lockouts for Laureate digital counters. The grayed out area at the top right of the screen applies to Laureate remote displays.
Graphical Output Screens (not available with Ethernet)
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.
DPM Calibration Screens
Click on the Scaling tab, which provides three scalClick on the Scaling tab, which provides three scaling methods to relate the signal to the displayed reading: 1) Scale and Offset method, 2) Coordinates of two points method, and 3) Reading Coordinates of Two Points method. The last method uses actual high and low signals, and the computer will prompt you.
Frequency Meter Calibration Screen
Calibration of the quartz crystal of the Laureate frequency meter requires the input of a known frequency from a calibrator. Apply the frequency, then enter the frequency in Hertz. Calibration will be automatic, with storage of the calibration factor stored in non-volatile memory.
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.
| Up/Down Totalizing | |
|---|---|
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Up/down totalizing is provided by a mode of the Extended counter where pulses are either added or subtracted on Channel A based on a direction input on Channel B. The counter can also be programmed so that counting by Channel A is inhibited by an input on Channel B. |
| Combining Two Totals | |
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A+B, A-B and A/B arithmetic functions are available with the Extended counter. A+B sums both totals, while A-B subtracts the outflow total from inflow total. The A/B ratio applied to total helps assure the proper mixing of components. Controller setup and monitoring of the mixing operation are facilitated by optional serial communications. RS485 allows a single data line to handle multiple controllers. |
| Up or Down Counting with Preset | |
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A single Laureate dual-channel counter will handle two repetitive fill operations by counting from zero up to a preset, or down from a preset to zero. A dual setpoint relay board is required. |
| Machine Rune Time and Utilization | |
 |
An easy way to measure the run time of machines is to count AC line cycles and scale the total to hours. To display machine utilization or duty cycle in percent, use the Extended counter. Connect Channel A to switched AC and Channel B to the AC line, and have the counter display the A/B ratio with a 100 multiplier. |
| Total and Rate Simultaneously | |
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The Extended version of the Laureate dual channel counter can display scaled rate or total for the same channel at the push of a button, and alarm both the rate and total. The Extended version can also do curve linearization, thereby extending the working range and accuracy of flow transducers. |
| System-level Capabilities | |
| The Laureate dual channel totalizer can independently scale, display and alarm two totals, and the totals plus alarm data can be transmitted via RS232 or RS485. The displayed totals can also be transmitted as an isolated 4-20 mA or 0-10V analog output. The Extended version can further display and transmit arithmetic combinations of the two totals. |  |
CAL-Digital
Certificate of Calibration
$65.00
DLS-XLOG2
XLog2 Data logging Software
$495.00
IPC
Splashproof Cover
$55.00
CON01
CON01 Connector
$75.00
CBL01
RS232 Cable for Meters
$35.00
CBL02
USB-to-RS232 Adapter Cable
$47.00
CBL04
RS232 Cable for LT Transmitters
$47.00
CBL05
USB Data Cable for Meters
$47.00
CBL06
USB-to-RS485 Adapter Cable
$47.00
CBL07
USB Programming & Data Cable
$47.00
CBL08
RS485 Splitter Cable
$33.00CBL6
6-foot Power Cable
$41.00CBL12
12-foot Power Cable
$47.00What Are 1/8 DIN Digital Panel Meters Dual-Channel Pulse Input Totalizers?
In industrial and process control environments, precision and accuracy are critical. Instruments that can reliably monitor, display, and control various parameters are indispensable for ensuring the smooth operation of systems. Among these, Digital Panel Meters play a crucial role, especially when it comes to monitoring pulse inputs and totaling counts in various applications. One specific type of Digital Panel Meters that stand out are the 1/8 DIN Digital Panel Meters Dual-Channel Pulse Input Totalizers. These devices are designed for specific applications where dual-channel pulse input monitoring is essential.
Understanding the 1/8 DIN Standard
DIN stands for "Deutsches Institut für Normung," a German organization responsible for setting standards. In this context, the term "1/8 DIN" refers to the size of the Digital Panel Meters. 1/8 DIN Digital Panel Meters typically measure 96mm x 48mm, making them compact yet large enough to display critical data clearly. The 1/8 DIN standard ensures that these devices fit into standardized cutouts, making them easy to integrate into control panels.
Dual-Channel Pulse Input Totalizers: Overview
Dual-channel pulse input totalizers are specialized types of Digital Panel Meters designed to count and display pulse inputs from two separate channels. These devices are widely used in applications where monitoring two independent pulse signals is necessary. For instance, in a manufacturing process, it may be crucial to count the number of items produced on two separate production lines simultaneously.
Key Features and Functions
- Dual-Channel Monitoring: As the name suggests, these totalizers can handle two pulse input channels. Each channel operates independently, allowing for simultaneous monitoring of two different sources.
- Pulse Counting and Totalization: The primary function of these devices is to count pulses from the input sources. Pulses are generated by sensors such as proximity switches, rotary encoders, or flow meters. The totalizers keep running totals of these pulses, which can be displayed on the panels.
- Scalability and Flexibility: Many models offer configurable scaling options, meaning that the pulse counts can be converted into meaningful engineering units, such as liters, meters, or units produced. This makes the totalizers adaptable to various industrial applications.
- Display Options: The digital displays on 1/8 DIN totalizers typically provide clear and concise information. Depending on the model, they may feature LED or LCD displays, with options for backlighting, which ensures visibility even in low-light environments.
- Alarm and Relay Outputs: Some advanced models are equipped with alarm and relay outputs. These can be configured to trigger specific actions when preset counts or thresholds are reached, providing additional layers of control and automation in processes.
- Ease of Integration: Thanks to the 1/8 DIN standard size, these totalizers are easy to install and integrate into existing panels. They often come with a variety of input and output options, including analog and digital signals, making them versatile and easy to connect to other systems.
Applications of Dual-Channel Pulse Input Totalizers
- Manufacturing and Production Lines: In environments where items are counted as they are produced, dual-channel totalizers are invaluable. They allow operators to monitor and compare production rates from two different lines or machines.
- Flow Measurement: These totalizers can be used in conjunction with flow meters to monitor and totalize the flow rate of liquids or gases in pipelines, providing critical data for process control.
- Material Handling: In conveyor systems, pulse input totalizers can count items or packages as they move along different sections of a conveyor belt, helping to ensure that quantities are tracked accurately.
- Energy Management: In power distribution systems, these devices can monitor and totalize pulses from energy meters, enabling better management of power consumption and cost.
Where Are 1/8 DIN Digital Panel Meters Dual-Channel Pulse Input Totalizers Used?
1/8 DIN Digital Panel Meters with Dual-Channel Pulse Input Totalizers are specialized instruments widely used in various industrial and commercial applications. These devices are designed to measure and display pulse signals, typically from flow meters, counters, and other devices that generate pulse outputs.
1. Industrial Automation and Process Control
- Flow Measurement: In industrial environments, precise measurement of fluid flow is crucial. 1/8 DIN Digital Panel Meters can receive pulse inputs from flow meters, translating these pulses into readable flow rates or total volumes. This is essential in industries like chemical processing, water treatment, and oil and gas, where accurate flow measurement is vital for maintaining process efficiency and safety.
- Batch Processing: These devices are also used in batch processing systems, where the total amount of material dispensed needs to be measured. The totalizer function sums the pulses over time, providing total counts that can trigger actions such as shutting off valves once target amounts have been reached.
2. Energy Monitoring
- Electricity Metering: In energy management systems, dual-channel pulse input totalizers are often used to monitor electrical consumption by counting pulses from kilowatt-hour (kWh) meters. They help in tracking energy usage, which is critical for optimizing energy efficiency and reducing costs in commercial buildings, factories, and utilities.
- Renewable Energy Systems: In solar or wind energy systems, these Digital Panel Meters can monitor the total energy produced by counting pulses from power meters or sensors, helping in the effective management and monitoring of renewable energy generation.
3. Manufacturing
- Machine Monitoring: In manufacturing, keeping track of machine cycles or part counts is essential for production efficiency. These Digital Panel Meters can totalize pulses from sensors that monitor the number of parts produced or the number of machine cycles, providing valuable data for operational decision-making.
- Assembly Lines: On assembly lines, these devices can monitor the speed or quantity of items passing through different stages of production, ensuring that the process remains within specified parameters and that production targets are met.
4. Environmental Monitoring
- Water and Wastewater Treatment: In water and wastewater treatment plants, flow meters often output pulse signals corresponding to the volume of water passing through pipes. 1/8 DIN Digital Panel Meters can totalize these pulses to monitor the total amount of water treated, which is crucial for regulatory compliance and operational efficiency.
- Air Quality Monitoring: These Digital Panel Meters can also be used in systems that monitor air quality, where they totalize pulses corresponding to the volume of air sampled, helping in the assessment of environmental conditions.
5. Building Management Systems (BMS)
- HVAC Systems: In building management systems, dual-channel pulse input totalizers can be used to monitor the performance of HVAC systems. For example, they can count pulses from flow meters measuring the flow of chilled or heated water, providing data that helps in optimizing energy use and maintaining comfortable indoor environments.
- Lighting Control: In large commercial buildings, these Digital Panel Meters can help monitor energy use by counting pulses from meters associated with different lighting circuits, contributing to energy-saving strategies and cost management.
Conclusion
1/8 DIN Digital Panel Meters with Dual-Channel Pulse Input Totalizers are versatile tools used across various industries for accurate pulse measurement and totalization. From industrial automation and energy monitoring to manufacturing and environmental monitoring, these devices play crucial roles in ensuring operational efficiency, safety, and compliance.
Dual-Channel Pulse Input Totalizer Digital Panel Meter Frequently Asked Questions
Can the two channels be scaled independently of each other?
Yes. Channel A and Channel B are typically set up and scaled independently, so each can have its own engineering units, scale factor, and decimal point — for example, one channel scaled for gallons from a turbine flow meter while the other is scaled differently for a completely unrelated pulse source.
Can one channel display rate while the other displays total at the same time?
Yes, this is a common configuration. Channel A can be set to display a running total while Channel B displays an instantaneous rate, with the displayed channel selected via a front-panel pushbutton, which is a typical setup for flow applications where both current rate and accumulated volume matter.
What does up/down counting mean in a dual-channel totalizer?
Up/down counting lets one channel act as the pulse counter while the second channel's signal determines counting direction — for example, Channel A counts and scales pulses from a flow meter while Channel B carries a flow-direction signal, so the total correctly reflects volume even if flow temporarily reverses.
What does "totalizing with external inhibit" mean?
This lets a signal on one channel pause or resume totalizing on the other, without needing separate control logic. A common example is counting AC line pulses on Channel A to track elapsed run time, while a signal on Channel B starts or stops that counting based on whether a process is actually running.
Are the totals retained if the meter loses power?
Yes, totals on both channels are typically stored in non-volatile memory, so accumulated counts are retained through a power loss rather than resetting to zero when the meter powers back up.
What types of sensor outputs can feed the two pulse channels?
These meters commonly accept a range of pulse output types, including PNP or NPN proximity switches, TTL or CMOS logic signals, magnetic pickups, and dry contact closures, with each channel independently configurable for the specific sensor type connected to it.
Can arithmetic functions like A+B or A-B be performed between the two channels?
Yes, on models with the appropriate counter board, arithmetic functions such as A+B, A-B, AxB, A/B, and A/B-1 are available between the two channels — for example, A+B to sum two parallel flow lines into a combined total, or A/B to monitor and alarm an ingredient mixing ratio.
What alarm or output options are available on a dual-channel totalizer?
These meters commonly support dual setpoint relay outputs, an analog retransmission output, and serial communications such as RS-232 or RS-485, allowing either channel's rate, total, or math result to trigger a local alarm or feed a PLC or SCADA system.
How is a dual-channel totalizer typically programmed and configured?
These meters are usually programmable from the front panel pushbuttons or via setup software over a communications interface, with each channel's scaling, function mode, and display assignment configured independently to match the specific application.
Is custom curve linearization available on dual-channel totalizers?
On extended-function models, yes — this is useful for correcting the non-linear response of certain sensors, such as the low end of a turbine flow meter, by entering a set of reference data points that the meter uses to interpolate a corrected reading across the measurement range.
Dual-Channel Pulse Totalizer Questions From the Field
Why is my total roughly double what I expect it to be?
This has been documented as a common and easy-to-miss cause: if the counting device is configured to count both the rising and falling edges of a pulse signal rather than just one edge, the resulting count will be approximately twice the actual number of real pulses. Checking the edge-counting configuration against the pulse source's actual output specification is the standard first check when a total reads roughly 2x expected.
Why does one channel's count seem to be affected by activity on the other channel?
This cross-channel interference has been reported in real troubleshooting cases, and while the specific cause can vary by hardware, documented investigations have pointed toward wiring capacitance or shared grounding between channels as contributing factors — testing each channel in isolation with short jumper wires, and trying different physical channel assignments, are common diagnostic steps used to narrow down whether the issue is wiring-related or specific to a particular input.
My pulse count doesn't match the expected value even though the signal looks clean on a scope — what else could it be?
Sampling rate relative to pulse rate is a frequently overlooked cause: if the counting device's sampling or gate interval isn't fast enough relative to how quickly pulses are arriving, individual pulses can be missed even when the raw signal itself is clean. Confirming the counter's maximum rated input frequency against the actual pulse rate from the sensor is the standard check.
Can I connect two separate monitoring devices to the same pulse output, like a totalizer and a data logger?
This is a commonly attempted setup, and field guidance is mixed — it can work in some cases but isn't universally reliable, since some pulse output stages aren't designed to drive two independent loads simultaneously without affecting the signal seen by one or both devices. Where reliable duplication is needed, a source with a genuine dual pulse output option (a separate physical output for each device) is the more robust solution than tapping one output twice.
Why does my totalizer's count differ slightly from a second counter wired to the exact same sensor signal?
A small persistent discrepancy between two devices reading the same physical signal often comes down to differences in edge-triggering configuration, debounce/filter settings, or sampling method between the two devices rather than either device being "wrong." Comparing the edge and filter configuration of both devices against each other, not just against the sensor's datasheet, often resolves an otherwise puzzling mismatch.
Does shared wiring or a shared power supply between two pulse sensors cause interference between channels?
This is a commonly suspected cause in the field when two independently-wired channels show correlated errors, since shared return paths or power rails can allow noise from one sensor's switching to couple onto the other channel's signal. Running separate, individually shielded pairs for each channel's signal, and confirming each channel's return path isn't inadvertently shared, is the standard mitigation.
Why does my up/down counter only count in one direction even though I've wired the direction signal to the second channel?
This is generally traced to either the direction channel's signal not meeting the logic threshold the meter expects (for example, a weak or floating signal instead of a clean high/low state), or the up/down function simply not being enabled in the meter's configuration despite the physical wiring being correct. Verifying the direction signal's voltage levels directly at the meter's terminals, separate from confirming the mode is actually enabled in setup, isolates which of the two is the actual cause.
Should each pulse channel use its own dedicated shielded cable, or can both channels share one multi-conductor cable?
Field practice generally favors keeping each channel's pulse pair on its own individually shielded twisted pair within a jacketed multi-pair cable rather than sharing a single unshielded bundle, specifically to minimize the kind of cross-channel coupling that has been documented to cause one channel's count to be influenced by activity on the other.
