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Transmitters, 4-20 mA & Modbus - Panel Meters - Counters - Timers - Ethernet - USB - RS485 - RS232

Ethernet & 4-20 mA Output Transmitter for Pulse Totalizer Input

Rate or total in same transmitter, square root extraction. DIN Rail mounted, digitally programmable.

Ethernet transmitter

Features

  • Ethernet Serial Data I/O, Modbus TCP or Laurel ASCII protocol
  • 4-20 mA, 0-20 mA or 0-10V transmitter output, 16 bits, jumper selectable, isolated
  • Dual 120 mA solid state relays for alarm or control, isolated
  • 5V, 10V or 24V dc transducer excitation output, isolated
  • Two independently field-scalable pulse input channels
  • Up counting from zero to preset value using positive scale factor
  • Down counting from preset to zero using negative scale factor
  • Inputs from NPN or PNP proximity switches, contact closures, digital logic, or magnetic pickups down to 12 mV, pulse rates to 1 MHz
  • Digital span adjust from 0 to ±99,999, zero adjust from -99,999 to +99,999
  • Universal 85-264 Vac / 90-300 Vdc or 10-48 Vdc / 12-32 Vac power
Description

The Laureate pulse input totalizer transmitter accepts two independently scalable input channels from a wide range of pulse sources, such as NPN or PNP proximity switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC voltages to 250 Vac. Input pulse rates can be as high as 1 MHz.

With a Standard Main Board, the transmitter output can be scaled to track total (such as gallons) or rate (such as gallons per minute). Square root extrac­tion is standard.

With an Extended Main Board, the transmitter can also:

  • Count up to a preset or down from a preset to zero. Such applications typically utilize the transmitter's two solid state relays, which are standard. External reset of totals is via a special three-position screw terminal connector.
  • Perform custom-curve linearization on rate or total, for example to extend the range of transducers. Exceptionally accurate custom-curve linearization is provided by a curvilinear spline fit with up to 180 data points.
  • Combine channels A and B arithmetically so that the transmitter output tracks A+B (e.g., sum of two flows or totals), A-B (e.g., difference of two flows or totals), AxB (e.g., horse­power as product of force and RPM), A/B (ratio of two flow or totals), and A/B-1 (draw or relative elongation of material between rollers).
Signal conditioner board used with 4-20 mA current transmitter for frequency, rate or period

The dual-channel signal conditioner used for pulse detection accepts inputs from proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickups, contact closures, and other signals from 12 mV to 250 Vac. Jumper selections provide optimum operation for different sensor types and noise conditions. A built-in 5V, 10V or 24V dc excitation supply can power proximity switches and other sensors, and eliminate the need for an external power supply.

Standard features of Laureate LTE transmitters include:

  • Ethernet I/O, isolated. Supported protocols are Modbus RTU and ASCII (tunneled via Modbus TCP) and Laurel ASCII. The latter is simpler than the Modbus protocol and is recommended when all devices are Laureates. Note that RS232 or RS485 data I/O in lieu of Ethernet is provided by LT Series transmitters
  • 4-20 mA, 0-20 mA or 0-10V analog transmitter output, isolated, jumper-selectable and user scalable. All selections provide 16-bit (0.0015%) resolution of output span and 0.02% output accuracy of a reading from -99,999 to +99,999 counts that is also transmitted digitally. Output isolation from signal and power grounds eliminates potential ground loop problems. The supply can drive 20 mA into a 500 ohm (or lower) load for 10V compliance, or 10V into a 5K ohm (or higher) load for 2 mA compliance.
  • Dual solid state relays, isolated. Available for local alarm or control. Rated 120 mA at 130 Vac or 180 Vdc.
  • Universal 85-264 Vac power. Low-voltage 10-48 Vdc or 12-32 Vac power is optional.

Discovery and configuration of Laureate Ethernet Nodes is easily achieved with Laurel's Node Manager Software, and the discovered transmitters can then be programmed using Laurel's Instrument Setup Software. Both softwares run on a PC under MS Windows and can be downloaded from this website at no charge.

Laureate Ethernet network by Laurel Electronics
Specifications
Laureate Ethernet & 4-20 mA Output Transmitter with Dual Pulse Totalizer Inputs
Pulse Input
Types AC, pulses from NPN, PNP transistors, contact closures, magnetic pickups
Signal Ground Common ground for channels A & B.
Minimum Signal Nine ranges from (-12 to +12 mV) to (+1.25 to +2.1V).
Maximum Signal 250 Vac
Maximum Frequency 1 MHz, 30 kHz, 250 Hz (selectable).
Contact Debounce 0, 3, 50 ms (selectable).
Analog Output (standard)
Output Levels 4-20 mA and 0-10 Vdc (selectable)
Compliance, 4-20 mA 10V (0-500Ω load)
Compliance, 0-10V 2 mA (5 kΩ load)
Output Resolution 16 bits (65,536 steps)
Output Accuracy 0.02% of output span
Output Update Rate Programmed gate time + 30 ms + 0-2 signal periods
Output Isolation 250V rms working, 2.3 kV rms per 1 minute test
Ethernet Data I/O (standard)
Type 10/100 Base-T Ethernet per IEEE 802.3
Data Rates 300, 600, 1200, 2400, 4800, 9600, 19200 baud
Output Isolation 250V rms working, 2.3 kV rms per 1 min test
Serial Protocols Modbus TCP, Modbus RTU, Modbus ASCII, Laurel ASCII
Modbus Compliance Modbus over Serial Line Specification V1.0 (2002)
Digital Addresses 247 for Modbus, 31 for Laurel ASCII
Dual Relay Output (standard)
Relay Type Two solid state relays, SPST, normally open, Form A
Load Rating 120 mA at 140 Vac or 180 Vdc
Transducer Excitation Output (standard)
Jumper Selection 1 10V @ 60 mA, isolated to 50V from signal ground
Jumper Selection 2 5V @ 50 mA, isolated to 50V from signal ground
Jumper Selection 3 15V @ 60 mA, non-isolated
Power Input
Standard Power 85-264 Vac or 90-300 Vdc
Low Power Option 10-48 Vdc or 12-32 Vac
Power Frequency DC or 47-63 Hz
Power Isolation 250V rms working, 2.3 kV rms per 1 min test
Power Consumption 2W typical, 3W with max excitation output
Mechanical
Dimensions 129 x 104 x 22.5 mm case
Mounting 35 mm rail per DIN EN 50022
Electrical Connections Plug-in screw-clamp connectors
Environmental
Operating Temperature 0°C to 55°C
Storage Temperature -40°C to 85°C
Relative Humidity 95% at 40°C, non-condensing
Cooling Required Mount transmitters with ventilation holes at top and bottom. Leave 6 mm (1/4") between transmitters, or force air with a fan.
Pinout

Laureate Ethernet & 4-20 mA Output Transmitter with Dual Pulse Totalizer Inputs

LTE Ethernet Transmitter Pinout
Application Examples
Up/Down Totalizing
Dual-channel up/down totalizing using one channel for counts and one channel for count direction Up/down totalizing is provided by a mode of the Extended totalizing transmitter where pulses are either added or subtracted on Channel A based on a direction input on Channel B. The unit can also be programmed so that counting by Channel A is inhibited by an input on Channel B.
Combining Two Totals
Dual-channel up/down totalizing, where two channels are added or subtracted. A+B, A-B, A/B and AxB arithmetic functions are available with the Extended totalizing transmitter. A+B can sum two totals, while A-B subtracts the outflow total from inflow total. A/B ratio applied to two totals helps assure the proper mixing of components.
Up or Down Counting with Preset
Two repetitive fill operations handled by a single Laureate dual-channel digital counter and totalizer A single Laureate dual-channel totalizing transmitter will handle two repetitive fill operations by counting from zero up to a preset, or down from a preset to zero. The dual relay option is required.
Machine ON Time and Utilization
Dual-channel up/down totalizing to measure machine ON time by counting power line cycles. An easy way to measure the ON 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 totalizing transmitter. Connect Channel A to switched AC and Channel B to the AC line, and apply a 100 multiplier to the A/B ratio.
Custom Curve Linearization
Displaying rate and total in the same Laureate totalizer and rate meter or transmitter The Extended version of the Laureate dual channel totalizing transmitter can transmit 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.
Ordering Guide
Laureate Ethernet & 4-20 mA Output Transmitter with Dual Pulse Totalizer Inputs
Click on the radio buttons to build a model number with pricing as shown below. Prices are in US dollars and do not include shipping or duty charges (export sales). Please see our explanations and limitations applicable to pricing and online orders. Prices shown are in US Dollars and are Laurel's manufacturer's suggested retail price (MSRP) in the USA. Orders are processed manually, not directly by our shopping cart system. You don't have to supply credit card information when placing an online order.

North American Orders. Laurel does not sell factory-direct in the USA or Canada. Online sales orders are filled through distribution. During the ordering process, you will have the chance to select an authorized Laurel distributor, or you can ask Laurel to refer you to a distributor. The distributor will then contact you to quote shipping, tax and duty (where applicable), and arrange for payment.

International Orders. If your ship-to address indicates that you are outside of the USA or Canada and Laurel has a distributor in your country, we will forward your order to that distributor for follow-up. If Laurel does not have a distributor in your country, we will email you an order acknowledgment and a pro forma invoice which states the product price, shipping charges, and wire transfer information, which includes a $25 bank wire transfer fee.

Questions about your order? Please email your distributor or sales@laurels.com
Configured model number LTE60FR
Configured price per model $295
Quantity 1
Extended price $295
Quantity
Transmitter
Type
LTE  4-20 mA & Ethernet output transmitter $295
LT  4-20 mA & RS232/RS485 output transmitter $235
Main Board 6  Standard Main Board $0
8  Extended Main Board $40
With Standard Main Board: Scalable to ±999,999 for frequency, rate, square root of rate, up or down total, period, A-to-B time interval.
With Extended Main Board: Above, plus rate and total simultaneously, ratio (A/B), draw (A/B-1), other arithmetic functions (AxB, A+B, A-B), phase angle, stopwatch, up/down counting, batching operation, linearization of nonlinear inputs.
 
Power 0  Isolated 85-264 Vac or 90-300 Vdc $0
1  Isolated 12-32 Vac or 10-48 Vdc $30
Input Type FR  Dual Channel Pulse Input Signal Conditioner $0
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