What does 'Unit mass error' mean on A&D HR-250A, and how to resolve it?
A 'Unit mass error' on your A&D Scales means the sample unit mass for the counting mode is too light. Add samples to reach the specified number and press the PRINT key. Pressing the PRINT key without adding samples will shift the balance to the counting mode, but adding samples ensures accurate weighing.
What does 'Sample mass error' mean on A&D HR-250A, and how can I solve it?
A 'Sample mass error' on your A&D Scales means the balance can't store the sample for counting or percent mode because it's too light. Use a heavier sample to resolve this.
What to do if A&D HR-250A Scales have an internal mass error?
If your HR-AZ series A&D Scales display an internal mass error, it means the internal mass application mechanism isn't working correctly. Perform the weighing operation again from the beginning.
What does 'Weighing pan error' mean on A&D HR-250A, and how do I resolve it?
A 'Weighing pan error' on your A&D Scales means the weight value is too light. Ensure that the weighing pan and pan support are correctly installed. Press the ON:OFF key twice to return to the weighing mode. If the error continues, calibrate the balance.
What to do if A&D HR-250A Scales display 'Calibration weight error (too light)'?
If your A&D Scales show a 'Calibration weight error (too light)', it indicates that the calibration weight is too light. Verify that the weighing pan is properly installed and confirm the calibration weight value. Press the CAL key to return to the weighing mode.
What to do if A&D HR-250A Scales display 'Calibration weight error (too heavy)'?
If your A&D Scales show a 'Calibration weight error (too heavy)', it means that the calibration weight is too heavy. Make sure the weighing pan is correctly installed and confirm the calibration weight value. Then, press the CAL key to return to the weighing mode.
What does overload error mean on A&D Scales, and how to fix it?
An overload error on your A&D Scales indicates that a sample exceeding the balance's weighing capacity has been placed on the pan. To fix this, remove the sample from the pan.
Describes the manual's structure, covering basic operation, environment, functions, interface, and maintenance.
Highlights key features of the HR-AZ series balance, including internal mass, casing, units, interfaces, and options.
Details compliance with FCC Rules and EMC Directives, including CE marking requirements.
Instructions on carefully unpacking the balance and checking its contents. Includes installing the breeze break.
Steps for correctly installing the balance, including leveling and connecting the AC adapter.
Guidelines for installing the balance in a suitable environment, ensuring stability, and leveling.
Precautions for accurate weighing, including static electricity, temperature differences, and handling.
Recommendations for handling the balance after use, such as avoiding shock and proper cleaning.
Information on the balance's standby mode and warm-up procedure for accurate weighing.
Explains basic key operations like pressing and holding keys for balance functions.
Describes various indicators and symbols displayed on the balance for status and data.
Lists available weighing units and modes for the HR-AZ/HR-A series balance.
Instructions on how to select and store weighing units or modes in the function table.
Step-by-step guide for performing basic weighing operations in gram mode.
Explains the smart range function for HR-251AZ/HR-251A, which automatically switches ranges.
Details how to use the counting mode to determine the number of objects based on unit mass.
Explains the percent mode for displaying weight relative to a reference mass.
Describes how to statistically calculate weight data, including sum, average, and standard deviation.
Provides an example of using the statistical calculation mode, mixing formulae for medicine.
Describes the response indicators (FAST, MID, SLOW) and their respective characteristics.
Explains how to select the response rate (FAST, MID, SLOW) via key operations.
Outlines the available calibration modes: internal mass and external weight.
Defines key terms used in calibration, such as external weight, calibration weight, and target weight.
Provides cautions for calibration, including breeze break usage and environmental factors.
Details precautions and guidelines for selecting and using external calibration weights.
Emphasizes proper leveling and the effect of poor adjustment on calibration.
Step-by-step guide for performing one-touch calibration using the internal mass.
Discusses potential changes to internal mass due to aging or environment and the need for periodic correction.
Steps to perform a calibration test using the internal mass, checking accuracy without recalibrating.
Method 1 for correcting internal mass using an external weight and calculation.
Method 2 for correcting internal mass using an external weight and automatic calibration.
Step-by-step procedure for calibrating the balance using an external weight.
Explains switches for protecting parameters like function table and calibration from unintentional changes.
Describes how to operate the function switches to permit or inhibit parameter changes.
Steps to reset the balance parameters (calibration, function table, etc.) to factory settings.
Explains the hierarchical structure (Class, Item, Parameter) of the function table.
Details the display symbols and keys used when navigating the function table.
Provides detailed descriptions of various parameters within the function table classes.
Explains parameters related to environmental settings and display options like condition and stability.
Details the settings for data output modes (Key mode, Auto print, Stream mode) via RS-232C.
Describes the different data formats (A&D, DP, KF, MT, NU, CSV) for outputting data.
Shows examples of data output for stable, unstable, and overload conditions in various formats.
Explains application functions like Capacity Indicator and Statistical Calculation Mode.
Details how to set and confirm the date and time for the clock and calendar function.
Explains how to set up and use the comparator function for weighing comparisons.
Instructions for setting an ID number to identify the balance for GLP/GMP.
Details on setting parameters to output GLP/GMP compliant reports via printer or PC.
Describes how to output Title and End blocks for GLP reports using the AD-8121B printer.
Safety notes and usage instructions for the underhook, including dust protection.
Information about the density mode, its factory setting, and minimum display.
Provides formulas for calculating the density of a solid and a liquid.
Steps to enable and configure the density mode settings in the function table.
Instructions on setting a programmable unit and performing weighing with it.
Details the RS-232C transmission system, form, rate, data format, and pin assignments.
Describes how to connect and configure the AD-8121B printer with the balance.
Information on connecting the balance to a personal computer via RS-232C or USB.
Explains the use of WinCT software for PC communication with the balance.
Lists commands for querying weight data and controlling the balance via RS-232C.
Explains acknowledge and error codes transmitted between the balance and PC.
Details settings for RS-232C communication, specifically "Data output" and "Serial interface".
Provides instructions for cleaning the balance and handling it during transportation.
Guide to checking balance performance, operating environment, and weighing methods for troubleshooting.
Lists common error codes displayed by the balance and their descriptions.
Instructions on contacting the dealer for service or repair when issues arise.
Details the USB interface for transmitting data to a PC.
Explains the Ethernet interface for LAN connectivity and data acquisition.
Describes the battery unit for portable operation.
Mentions the main unit protective cover.
Lists key specifications like weighing capacity, display, repeatability, linearity, and environment.
Specifies parameters related to counting mode, such as minimum unit mass and number of samples.
Details parameters for percent mode, including minimum 100% reference mass and display.
Covers interface details, calibration weights, dimensions, power, and net weight.
Provides a detailed diagram showing the external dimensions of the balance.
Defines important terms used throughout the manual.
General| Capacity | 250 g |
|---|---|
| Readability | 0.1 mg |
| Display | LCD |
| Repeatability (Standard Deviation) | 0.1 mg |
| Linearity | ±0.2 mg |
| Stabilization Time | 3 seconds |
| Interface | RS-232C |
| Power Supply | AC adapter |
| Weighing Pan Size | 90 mm |
| Calibration | External calibration |
| Operating Temperature | 5°C to 40°C |
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