Choosing the right WWL series external weight display depends primarily on the installation location, viewing distance, communication method, and environmental conditions. In this guide, we explain the key factors to consider when selecting the most suitable remote weight display for your application.
The selection process can be reduced to answering three simple questions:
- Where will the display be installed?
- From what distance will it be read?
- How will it communicate with the weighing indicator?
Where Will the Display Be Installed?
This is the first and most important question to answer before purchasing a display. All WWL series displays are suitable for both indoor and outdoor installation. However, due to the display technology used, some models offer significantly better visibility in direct sunlight than others.
For outdoor applications, we recommend LED displays based on SMD LED technology. These models provide higher brightness and superior readability in strong ambient light, making them ideal for outdoor use. This group includes the WWL-070, WWL-100, and WWL-140.
For indoor applications, compact desktop displays such as the WWL-020 and WWL-038 are an excellent choice. Larger models, including the WWL-057 and WWL-100P7, use traditional LED digit modules and are also well suited for indoor environments.
How to Choose the Display Size?
Each UK-SYSTEM display model is identified by a number following the „WWL” prefix, indicating the height of the displayed digits. For example, the WWL-020 features 20 mm high digits, while the WWL-140 displays digits with a height of 140 mm.
When selecting the display size, consider the typical distance between the operator and the display. The table below provides approximate viewing distances for each model.
Please note that these values are only indicative. The actual readable distance depends on factors such as the observer’s eyesight, lighting conditions, and viewing angle.
| Display Model | Digit Height | Comfortable Viewing Distance | Maximum Viewing Distance |
| WWL-020 | 20 mm | 3 m | 5 m |
| WWL-038 | 38 mm | 6 m | 10 m |
| WWL-057 | 57 mm | 9 m | 16 m |
| WWL-070 | 70 mm | 11 m | 18 m |
| WWL-100 / WWL-100P7 | 100 mm | 15 m | 22 m |
| WWL-140 | 140 mm | 21 m | 28 m |
| WWL-250 | 250 mm | 38 m | 50 m |
| WWL-300 | 300 mm | 45 m | 60 m |
| WWL-350 | 530 mm | 53 m | 70 m |
Example 1
An outdoor display for a truck scale with the operator positioned approximately 15 metres away. The recommended models are WWL-100 or WWL-070.
Example 2
A display installed in a production hall to show the weight of processed material, visible to multiple operators from approximately 20 metres away. The recommended model is WWL-100P7.
Distance Between the Display and the Weighing Indicator
Once the installation location has been determined, check the distance between the display and the weighing terminal. A communication cable must be installed between the display and the weighing terminal.
The cable length may influence the choice of communication interface (RS-232 or RS-485). For more information, see our article „RS-232 or RS-485 – Which Interface Should You Choose?”
If it is not possible to install a communication cable between the display and the weighing terminal, wireless radio communication can be used. Our UMR433-S1 radio modems enable wireless transmission of weighing data from the scale to the remote display.
Although communication between the weighing terminal and the display can be wireless, the display still requires a local power supply. This should be taken into account when selecting the installation location.
Distance Between the Display and the Weighing Indicator
Once the installation location has been determined, check the distance between the display and the weighing terminal. A communication cable must be installed between the display and the weighing terminal.
The cable length may influence the choice of communication interface (RS-232 or RS-485). For more information, see our article „RS-232 or RS-485 – Which Interface Should You Choose?”
If it is not possible to install a communication cable between the display and the weighing terminal, wireless radio communication can be used. Our UMR433-S1 radio modems enable wireless transmission of weighing data from the scale to the remote display.
Although communication between the weighing terminal and the display can be wireless, the display still requires a local power supply. This should be taken into account when selecting the installation location.
Additional Recommendations
When installing a display outdoors, we recommend mounting it under an existing canopy or roof whenever possible. Protection from rain and other weather conditions improves display readability and helps extend the service life of the equipment.
If installation under a roof is not possible, we recommend using dedicated steel protective hoods, which provide additional protection against weather conditions. Protective hoods are available for the WWL-100 and WWL-070 displays.
In addition to protecting the display from the elements, these hoods also serve as convenient mounting brackets.
Summary
Selecting the right remote weight display depends mainly on the required viewing distance, installation environment, and communication method with the weighing terminal. Choosing the appropriate model ensures excellent readability and reliable long-term operation.
If you are unsure which display is best suited for your application, please contact us at poczta@uk-system.pl. Our specialists will be happy to help you choose the right solution.
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