The TORREY WI Electronic Indicator is a versatile component designed for use with a wide range of Torrey industrial scales, including those used for receiving, labeling, truck weighing, and counter applications. It serves as the primary interface for displaying weight information and configuring the scale's operation.
Function Description
The core function of the WI indicator is to display the weight of a product, with the ability to switch between kilograms (kg) and pounds (lb). It features a clear display section that shows the current weight, the selected unit, and indicators for net weight, zero balance, AC/DC power supply connection, and low battery.
The indicator is equipped with a membrane keyboard that allows users to control various aspects of the scale's operation. Key functions include:
- Turning the scale on and off: A dedicated button controls the power to the device.
- Backlight control: Users can turn the display backlight on or off for improved visibility in different lighting conditions.
- Unit switching: A key allows for easy toggling between kilogram and pound units.
- Printing/Sending data: The "PRINT" key sends the current weight displayed to a connected PC or printer via RS-232 serial communication. This feature is supported by Torrey's demo software, which allows users to view scale data on a computer screen.
- Zero adjustment: The "ZERO" key adjusts the initial reference point, effectively eliminating any existing weight on the platform to establish a new zero. This is useful for ensuring accurate measurements when the platform is empty or when a permanent weight needs to be disregarded.
- Tare function: The "TARE" key is used when weighing a product in a container. By placing the container on the scale and pressing "TARE," the display will show zero, and the "NET" indicator will illuminate, allowing for the measurement of only the product's net weight. To exit this mode, all weight should be removed from the scale, and the tare key pressed again. It's important to note that both tare and zero functions are subtractive from the maximum capacity of the scale.
The WI indicator also includes a power-off time function. When operating without an AC/DC power supply, the scale will automatically turn off after 15 minutes of inactivity, conserving battery life.
Usage Features
The WI indicator is designed for user-friendly operation with several features that enhance its utility:
- Configurable capacity: The maximum capacity of the indicator can be set by the user, ranging from 1 kg to 10 tons. This configuration, however, must be performed by authorized personnel. The configuration process involves setting the maximum capacity and then calibrating the indicator with a known weight.
- Calibration process: After configuration, the indicator requires calibration to ensure accuracy. This involves a sequence of steps where the user confirms an unloaded platform, loads a defined calibration weight, and then confirms the calibration. The indicator provides messages like "conf," "cal," "ref Ø," "Load," and "unstable" to guide the user through this process.
- Load cell connectivity: The indicator is designed to connect to load cells, which are the weight sensors. The manual provides a clear diagram for connecting the load cell harness to the terminal, identifying the correct pins for excitation and signal. For setups involving multiple load cells (2 to 4 of 350 ohms), a sum board is necessary, and users are advised to contact an authorized distributor.
- Wall mounting option: The indicator can be fixed to a wall, offering flexibility in placement within a workspace. The manual illustrates the screw holes for this purpose.
- Serial communication: The indicator supports asynchronous serial communication via an RS-232 DB9 connector, allowing it to send weight data to a printer or PC. The baud rate is fixed at 9600. The data format for PC communication is provided, detailing the ASCII code structure for text, weight, unit, and status sections, including indicators for net, tare, gross, weight, kg/lb, and zero/motion.
Maintenance Features
The TORREY WI indicator is designed for minimal maintenance, but certain practices are recommended to ensure its longevity and accurate operation:
- Cleaning: The scale should not be washed with a flow of water, as this can damage electronic components. Instead, a damp rag should be used to clean the plate, cover, and keyboard daily. For oily or greasy substances, a dry and clean rag is recommended. Detergents or corrosive liquids should not be used for cleaning.
- Leveling: Regularly checking that the scale is correctly leveled with its four well-supported bases is crucial for accurate readings.
- Obstruction checks: When cleaning, it's important to ensure that no papers or other materials are under the plate or plate-holder that could obstruct proper operation.
- Environmental protection: The scale should be protected from insects, particularly roaches, which can cause serious damage to electronic components. Using solid anti-roach products is advised. It should also be protected from excessive moisture, dust, direct fans or heaters, and extreme temperatures (below -10 °C / 14 °F or above 40 °C / 104 °F).
- Battery care: The rechargeable battery requires initial charging for 10 hours before first use. When the low battery indicator appears, the scale should be connected to the AC/DC power supply for 10 hours with the scale turned off to recharge. While it can operate for a short period on low battery, prolonged use will lead to automatic shutdown. The charging capacity of the battery decreases with each cycle, and if the scale fails to turn on after recharging, the battery needs to be replaced.
- Handling: The scale should not be dropped or hit with products being weighed, as this can damage the weight sensor over time. Constant movement of the scale should also be avoided to prevent damage from strokes.
- Authorized service: In case of problems, users are advised to first consult the troubleshooting guide in the manual. Opening the scale or attempting repairs by unauthorized personnel will void the warranty. Only authorized and qualified personnel should check and repair the scale. The security seal, used for calibration, should only be handled by authorized personnel.
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