Skip navigation

SI Onboard 9150 digital CAN weighing system can provide tilt compensation

Vishay Precision Group Inc announced that SI Onboard, a brand of the VPG On-Board Weighing product line, has introduced a digital on-board weighing system in North America. A weighing system based on the CAN standard and featuring tilt compensation, the SI Onboard 9150 system provides high accuracy regardless of truck position; simple calibration through setup wizards; detailed, real-time diagnostics; and a graphic color TFT display.

The 9150 is optimized for underbody on-board weighing in a range of truck makes and models to optimize payload, prevent overloading fees at truck scales, and reduce vehicle maintenance by preventing overloading. Using digital communication instead of an analog signal in these applications, the system provides a higher immunity to electromagnetic noise and better performance under high temperatures and humidity conditions.

This system provides gross or net vehicle weight with high accuracy, as well as axle group loading and overload alarms for trucks and trailers. The 9150's tilt compensation measures tilt angle of truck and trailer in both pitch and roll axes. Measured angles are used to compensate readings from load cells to ensure accuracy regardless of truck position.

The digital CAN system is composed of two components: the 9150 meter to provide the user interface and the 9150 JBOX/transmitter to integrate the interface with the load cells, signal processing, diagnostics, and local functionality needed

for setup and calibration per trailer. The 9150 meter has a bright 4.3-inch graphic color TFT display with LED backlighting to display weight, configuration, and diagnostic results. Offering a wide viewing angle under all lighting conditions, the interface provides four arrow keys and four soft keys for easy operation and navigation among the meter's menus and modes. The meter's RS-232 interface allows for connection to a printer or in-cab PC, while a USB interface enables backup and restore of setup parameters and user data.

For intuitive setup using the 9150's password-protected wizards, the operator selects the relevant configuration from the drop-down menu, and the system automatically configures the needed parameters. Up to eight 9150 transmitters can be added to the system to support an additional four to eight trailers. For connection of the trailers, including hot swaps, all operational and setup parameters are stored in the 9150 transmitter.

The 9150 runs real-time diagnostics of load cells, transmitters, and meters, and it can test the parameters of each load cell individually. Faults and alarms are displayed on the screen — in addition to an audible alarm — showing fault location and details. Operators can switch off faulty load cells and continue operation without them.

Visit for further details.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.