To Next PageTo Next PageWhy does my Salter Brecknell Scales show CAL. Er?
If your Salter Brecknell Scales show 'CAL. Er', it means the environment is unstable or the calibration weight used was incorrect. Move the scale to a more stable location and ensure you are using the correct calibration weight.
How to fix poor weighing accuracy on Salter Brecknell 335?
Poor weighing accuracy on your Salter Brecknell Scales can result from several factors: * Improper calibration: Perform calibration. * Unstable environment: Move the scale to a stable location. * Scale not zeroed: Press the ZERO key before use. * Tare function active: Press the Tare key to remove any tare weight. * Incorrect unit of measure: Ensure the correct unit is active.
What to do if my Salter Brecknell 335 display Err2?
If your Salter Brecknell Scales display 'Err2', it indicates an overload, zero error, or a normal calibration condition. Remove any weight from the scale. It is also possible that the load cell is damaged and should be checked.
What to do if my Salter Brecknell 335 Scales display Err1?
If your Salter Brecknell Scales display 'Err1', it could be due to an under load condition or a zero error. Verify the weight platter is installed correctly, then power the scale off and on. If the problem persists, perform a calibration.
What does it mean when my Salter Brecknell Scales display _ _ _ _ _?
If your Salter Brecknell Scales display ' _ _ _ _ _ ', it indicates an overload condition. Remove the excess weight from the scale.
Covers the process of installing or changing the 9-volt battery for the scale.
Explains display annunciators and the functions of Hold/Unit, Zero/ON/OFF, and Tare keys.
Step-by-step guide on how to perform standard weighing operations on the scale.
Instructions on how to switch between different units of measurement (lb/oz, kg, g).
Details how to use the tare function to weigh net contents of a container.
Explains how to use the weight hold feature for larger items or to lock readings.
Describes how to enable or disable the automatic power-off function to save energy.
Information on connecting and using the scale via its USB interface with a computer.
Details the data format transmitted by the scale over its USB interface.
Step-by-step guide for calibrating the scale using pound (lb) weights.
Step-by-step guide for calibrating the scale using kilogram (kg) weights.
Details the weight capacity and measurement resolution across different ranges.
Specifies the acceptable accuracy tolerance for the scale's measurements.
Covers display features, operating temperature, tare range, and stabilization time.
Specifies the USB version requirement for computer connectivity.
The Salter Brecknell Model 335 Postal Scale is a versatile and affordable weighing solution designed for both office and home use, ideal for accurately weighing letters and small packages. This scale is equipped with a USB interface, which not only provides power but also enables communication with a computer, facilitating integration with third-party USPS software for enhanced functionality.
The primary function of the Model 335 Postal Scale is to provide precise weight measurements for various items. It operates within stable environments, where fluctuations in temperature, humidity, and vibration are minimized to ensure accuracy. The scale features a dual-range capacity, allowing it to handle a wide array of items, from light letters to heavier packages, with appropriate resolution for each range.
A key feature is the weight hold function. This is particularly useful when weighing items that are too large and might obstruct the display, preventing the user from seeing the weight. With this function, the scale can lock a stable weight on the display even after the item has been removed, ensuring that the measurement can be read clearly.
The scale also includes a units switching function, allowing users to easily toggle between different units of measure, such as pounds and ounces (lb/oz), kilograms (kg), or grams (g), to suit specific needs or regional requirements.
For convenience, the Model 335 is designed with a flip tray. This tray serves multiple purposes: it can be used to weigh large envelopes more easily or to hold tubes and other irregularly shaped packages securely in place on the weight tray during measurement.
The scale is powered either by a USB connection to a computer or by a 9-volt battery, offering flexibility in its placement and use. To conserve battery life, the scale incorporates an auto power-off feature, which activates after a period of inactivity. The blue backlit display enhances readability, especially in low-light conditions, and also turns off after a few seconds of no use to further save battery power.
To install the scale, it should be placed on a stable, level surface, free from air currents, rapid temperature changes, and vibrations, which could otherwise affect weighing accuracy. The weight platter must be carefully installed on the mounting posts, ensuring it does not touch any adjacent surfaces. All feet of the scale should be in contact with the counter for stability.
Power can be supplied by plugging the USB cable into the back of the scale and a computer's USB port. Alternatively, a 9-volt battery can be used. After powering on, it is recommended to let the unit warm up for about five minutes to allow the electronics and load cell to reach room temperature, ensuring optimal performance. A known weight can then be placed on the scale to test its accuracy. If the scale is not weighing accurately upon installation, calibration is recommended.
The Model 335 can operate on a 9-volt battery with an expected life of 60 hours of normal use. When the battery is low, the display will show "Lo. B" before the scale automatically turns off after approximately one minute. To change the battery, the cover on the bottom of the scale is removed, the old battery is replaced with a new one, ensuring correct positive (+) and negative (-) orientation, and the cover is then replaced.
The scale features several key functions controlled by dedicated buttons:
To perform standard weighing, turn on the scale using the Zero / ON / OFF button. The scale will beep and perform a test sequence, then display zero weight. If not, press the Zero / ON / OFF key again. Place the item on the weight platter, and the weight will be displayed, stabilizing within approximately two seconds.
Press and hold the Hold / Unit key until a beep is heard, and the annunciator arrow moves to the next unit. Continuing to hold the key cycles through the units (lb/oz, kg, g) every 2-3 seconds. The selected unit is retained even after power off.
For net weight measurements, place an empty container on the scale and quick press the Tare key. The display will show "0.000" and the "Tare" arrow will light up. Then, place items into the container to determine their net weight. After tare weighing, removing the container will result in a negative weight display; quick press the Tare key to return to zero gross weight.
This feature is useful for large items that obscure the display. With the scale on and at zero, quick press the Hold / Unit key; an arrow above "HOLD" will light up. Place the item on the scale, wait two seconds for stabilization (indicated by a beep), and the weight will be held on the display after the item is removed. Press the Hold / Unit key again to exit this mode.
To save battery and electricity, the scale automatically powers off after 5 minutes of no use or no weight change. If connected via USB, this feature can be turned off by pressing and holding the Tare key for 5 seconds until "AU.oFF" is displayed. To re-enable it, press and hold the Tare key for 5 seconds until "AU.on" is displayed.
The Model 335 includes a USB virtual COM port interface compatible with Windows 98, XP, and Vista. Users need to download and install the 335 USB driver from the Salter Brecknell website. An Active X program is also available for customized scale interfaces. The scale is compatible with United States Postal Service (USPS) programs. After driver installation, the PC will recognize the scale, and users should note the COM port setting (USB-SERIAL CH340) from the Windows Control Panel. The COM port should be configured for 2400 Baud, 8 data bits, no parity, and 2 stop bits, without using DTR and CTR. The scale continuously sends weight data in a specific format (STX X X X # # # # # CR) three times per second.
The scale should be cleaned with a damp cloth and mild detergent. It is important to handle the scale with care, as precision scales contain sensitive load cells. Dropping the unit or placing weights exceeding its rated capacity can damage the load cell, affecting accuracy and functionality.
The manual provides a comprehensive troubleshooting guide for common issues:
For most accuracy issues, recalibration is the recommended remedy.
Calibration is crucial for maintaining accurate weighing. The Model 335 can be calibrated using either LB or KG weights. Before attempting calibration, any Windows program using the Model 335 must be closed.
If "CAL.Er" appears during calibration, it indicates an error, and the steps should be repeated. Persistent "CAL.Er" may suggest a damaged load cell or electronics. It is critical to use accurate and correct weights for calibration, as inaccurate weights can lead to incorrect measurements.
General| Type | Bench Scale |
|---|---|
| Capacity | 150 kg |
| Readability | 50 g |
| Units | kg, lb |
| Display | LCD |
| Auto Shut-off | Yes |
| Tare Function | Yes |
| Hold Function | Yes |
| Overload Indicator | Yes |
| Low Battery Indicator | Yes |
| Power Supply | AC Adapter or 4 x AA Batteries |
| Platform Size | 400 x 300 mm |
