Weight Transmitters

Laumas TLB DIN-rail weight transmitters connect strain-gauge load cells to PLCs, displays and control systems. Choose from analogue, RS485 and industrial network versions to match your receiving equipment. Each transmitter reads one weighing channel, which can combine several compatible load cells through a junction box.

Laumas TLB Ethernet TCP/IP Weight Transmitter

Laumas TLB Series

Laumas TLB4 Series

Laumas TLM8 Series

Other Transmitters

Collection

Product comparison

Compare Weight Transmitters

Use this guide to identify the Laumas product family that best matches the number of load cell inputs, installation and level of monitoring required.

TLB: 1 load cell input Compact DIN-rail weight transmitter for a single load-cell weighing point connected to a PLC or control system.
TLB4: 4 load cell inputs Four-channel transmitter with digital equalisation and individual load-cell monitoring for tanks, hoppers and platforms.
TLM8: 8 load cell inputs Multi-channel transmitter for larger tanks, silos and platforms requiring load-distribution monitoring and individual sensor diagnostics.
TLK: 1 load cell input Enclosed weight transmitter with a local display and keypad for setup, checking and process monitoring.
TLKWF: 1 load cell input Enclosed transmitter with a local display, keypad and Wi-Fi communication for compatible networked weighing applications.
LCB: 1 load cell input Converts a conventional analogue load cell into a digital device close to the point of measurement.

42 products

TLB SERCOS III Weight Transmitter

£493.00

TLB4 CC-Link Weight Transmitter

£529.00

TLB4 EtherNet/IP Weight Transmitter

£529.00

TLB4 EtherCAT Weight Transmitter

£529.00

TLB4 POWERLINK Weight Transmitter

£529.00

TLB4 PROFINET IO Weight Transmitter

£529.00

TLB4 SERCOS III Weight Transmitter

£529.00

TLM8 Ethernet TCP/IP Weight Transmitter

£543.00

TLM8 CANopen Weight Transmitter

£569.00

TLM8 DeviceNet Weight Transmitter

£569.00

TLM8 PROFIBUS DP Weight Transmitter

£569.00

TLM8 CC-Link Weight Transmitter

£595.00

TLM8 EtherNet/IP Weight Transmitter

£595.00

TLM8 PROFINET IO Weight Transmitter

£595.00

TLM8 SERCOS III Weight Transmitter

£595.00

TLM8 Modbus TCP Weight Transmitter

£595.00

TLM8 POWERLINK Weight Transmitter

£595.00

TLM8 EtherCAT Weight Transmitter

£595.00

Weight transmitters in industrial weighing systems

A weight transmitter sits between the load cells and the equipment that uses the measurement. It conditions the low-level sensor signal and converts it into an output suitable for a PLC, HMI, display or wider control system.

Start by choosing the input arrangement. The TLB range provides one weighing channel for a single load cell or the combined signal from several compatible load cells connected in parallel through a junction box, subject to the model's excitation and load-cell impedance limits. TLB4 and TLM8 transmitters provide four and eight independent reading channels respectively, allowing individual load-cell monitoring and digital equalisation. TLK models add a local display and keypad, while the LCB digitises an individual analogue load cell close to the sensor.

Next, match the transmitter to the control system. Options include analogue outputs, RS485 and established industrial network interfaces such as EtherNet/IP, EtherCAT, Modbus TCP, PROFIBUS DP and PROFINET IO. Selecting the correct version avoids an unnecessary protocol converter and makes commissioning more straightforward.

Before specifying a transmitter, check the load-cell signal and quantity, supply voltage, required output, mounting arrangement and environmental conditions. For replacement equipment, it is also important to confirm the existing wiring and control-system configuration.

Communication and output options

Analogue transmitters provide a continuous current or voltage signal for a compatible PLC input, display or controller. They are often a practical choice for established systems where the weight value is required without additional network data.

RS485 provides a dependable serial connection for compatible instruments and control equipment. Network versions place weighing data directly onto the specified automation system, with options including CANopen, EtherCAT, EtherNet/IP, Modbus TCP, POWERLINK, PROFIBUS DP, PROFINET IO and SERCOS III.

The interface must match the PLC or machine network exactly. Similar names do not necessarily indicate compatible protocols, so confirm both the physical connection and communication standard when selecting a transmitter.

Single-point weighing

Compact TLB transmitters provide one weighing channel for a single load cell or the combined signal from several compatible load cells connected in parallel through a junction box. The permitted number depends on the model's excitation capacity and load-cell impedance.

Multi-cell diagnostics

TLB4 and TLM8 models retain individual channel information, helping engineers balance the system and identify uneven loading or a suspect sensor.

Local indication and setup

TLK models include a display and keypad where engineers or operators need to view the weight and access setup functions at the installation.

Learn more

Weight transmitter applications

Weight transmitters are used where load-cell measurements need to form part of a machine, production process or monitoring system.

Tank, hopper and silo weighing

Connect vessel load cells to local displays, PLCs and monitoring systems for stock measurement, batching and process control.

Machine and PLC integration

Bring weight data into OEM machinery and automated production equipment through the analogue, serial or network interface used by the controller.

Filling, dosing and batching

Provide continuous weight feedback to compatible control equipment used for filling, dosing and batch measurement.

How to choose a weight transmitter

Choose the input arrangement first, then match the output, installation format and electrical requirements to the weighing system.

Match the communication interface

Select the exact analogue, serial or industrial network interface required by the PLC, HMI or control equipment.

Choose the weighing channel arrangement

A single weighing channel can read one load cell or the combined signal from several compatible cells connected in parallel. Choose independent channels when individual load-cell monitoring and digital equalisation are required, and check the model's electrical limits.

Decide whether a local display is needed

DIN-rail models suit control-panel installation, while an enclosed transmitter with a display and keypad is useful where the weight must be checked locally.

Check electrical compatibility

Confirm the load-cell sensitivity and quantity, excitation supply, transmitter power supply, wiring and required output before selecting a model.

Weight transmitter FAQs

Answers to common questions about selecting and using weight transmitters in load-cell weighing systems.

What does a weight transmitter do?

It conditions the low-level signal from one or more load cells and converts the measurement into an output that a display, PLC or control system can use.

When is a multichannel transmitter required?

A multichannel transmitter is useful when individual load-cell readings are needed for digital equalisation, load-distribution checks or sensor diagnostics.

Can a weight transmitter connect directly to a PLC?

Yes, provided the transmitter output matches the PLC input or network. Available versions include analogue, serial and several industrial Ethernet and fieldbus interfaces.

What is the difference between a weight indicator and a transmitter?

A weight indicator is primarily intended to present the measurement to an operator. A transmitter is principally used to condition the load-cell signal and pass weighing data to other equipment, although some transmitter models also include a local display.