A&D HR-250A User Manual

HR-AZ / HR-A SERIES
HR-250AZ / HR-251AZ / HR-150AZ / HR-100A
Z
HR-250A / HR-251A / HR-150A / HR-100A
Analytical Balance
1WMPD4002375A
INSTRUCTION MANUAL

A&D HR-250A Specifications

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

Summary

1. Introduction

1-1 About This Manual

Describes the manual's structure, covering basic operation, environment, functions, interface, and maintenance.

1-2 Features

Highlights key features of the HR-AZ series balance, including internal mass, casing, units, interfaces, and options.

1-3 Compliance

Details compliance with FCC Rules and EMC Directives, including CE marking requirements.

2. Unpacking the Balance

2-1 Unpacking

Instructions on carefully unpacking the balance and checking its contents. Includes installing the breeze break.

2-2 Installing the Balance

Steps for correctly installing the balance, including leveling and connecting the AC adapter.

3. Precautions

3-1 Before Use

Guidelines for installing the balance in a suitable environment, ensuring stability, and leveling.

3-2 During Use

Precautions for accurate weighing, including static electricity, temperature differences, and handling.

3-3 After Use

Recommendations for handling the balance after use, such as avoiding shock and proper cleaning.

3-4 Power Supply

Information on the balance's standby mode and warm-up procedure for accurate weighing.

4. Display Symbols and Key Operation

Key Operation

Explains basic key operations like pressing and holding keys for balance functions.

Display Symbols

Describes various indicators and symbols displayed on the balance for status and data.

5. Weighing Units

5-1 Units

Lists available weighing units and modes for the HR-AZ/HR-A series balance.

5-2 Storing Units

Instructions on how to select and store weighing units or modes in the function table.

6. Weighing

6-1 Basic Operation (Gram Mode)

Step-by-step guide for performing basic weighing operations in gram mode.

6-2 Smart Range

Explains the smart range function for HR-251AZ/HR-251A, which automatically switches ranges.

6-3 Counting Mode (PCS)

Details how to use the counting mode to determine the number of objects based on unit mass.

6-4 Percent Mode (%)

Explains the percent mode for displaying weight relative to a reference mass.

6-5 Statistical Calculation Mode

Describes how to statistically calculate weight data, including sum, average, and standard deviation.

6-6 Statistical Calculation Mode (Example of Use)

Provides an example of using the statistical calculation mode, mixing formulae for medicine.

7. Response Adjustment

Indicator

Describes the response indicators (FAST, MID, SLOW) and their respective characteristics.

Operation

Explains how to select the response rate (FAST, MID, SLOW) via key operations.

8. Calibration

8-1 Calibration Mode

Outlines the available calibration modes: internal mass and external weight.

Terms

Defines key terms used in calibration, such as external weight, calibration weight, and target weight.

Caution

Provides cautions for calibration, including breeze break usage and environmental factors.

Caution on Using an External Weight

Details precautions and guidelines for selecting and using external calibration weights.

8-2 Calibration Using the Internal mass (One-Touch Calibration, only for the HR-AZ series)

Note

Emphasizes proper leveling and the effect of poor adjustment on calibration.

Operation

Step-by-step guide for performing one-touch calibration using the internal mass.

About the Internal Mass

Discusses potential changes to internal mass due to aging or environment and the need for periodic correction.

8-3 Calibration Test Using the Internal Mass (Only for the HR-AZ series)

Operation

Steps to perform a calibration test using the internal mass, checking accuracy without recalibrating.

8-4 Correcting the Internal Mass Value: 1 (Only for the HR-AZ series)

Operation

Method 1 for correcting internal mass using an external weight and calculation.

8-5 Correcting the Internal Mass Value: 2 (Only for the HR-AZ series)

Operation

Method 2 for correcting internal mass using an external weight and automatic calibration.

8-6 Calibration Using an External Weight

Operation

Step-by-step procedure for calibrating the balance using an external weight.

9. Function Switch and Initialization

9-1 Permit or Inhibit

Explains switches for protecting parameters like function table and calibration from unintentional changes.

Operation

Describes how to operate the function switches to permit or inhibit parameter changes.

9-2 Initializing the Balance

Operation

Steps to reset the balance parameters (calibration, function table, etc.) to factory settings.

10. Function Table

10-1 Structure and Sequence of the Function Table

Explains the hierarchical structure (Class, Item, Parameter) of the function table.

10-2 Display and Keys

Details the display symbols and keys used when navigating the function table.

10-3 Details of the Function Table

Provides detailed descriptions of various parameters within the function table classes.

10-4 Description of the Class “Environment, Display"

Explains parameters related to environmental settings and display options like condition and stability.

10-5 Description of the Item “Data Output Mode"

Details the settings for data output modes (Key mode, Auto print, Stream mode) via RS-232C.

10-6 Description of the Item “Data Format”

Describes the different data formats (A&D, DP, KF, MT, NU, CSV) for outputting data.

10-7 Data Format Examples

Shows examples of data output for stable, unstable, and overload conditions in various formats.

10-8 Description of the Item "Application Function"

Explains application functions like Capacity Indicator and Statistical Calculation Mode.

10-9 Clock and Calendar Function (Only for the HR-AZ series)

Details how to set and confirm the date and time for the clock and calendar function.

10-10 Comparator Function

Explains how to set up and use the comparator function for weighing comparisons.

11. ID Number and GLP Report

11-1 Setting the ID Number

Instructions for setting an ID number to identify the balance for GLP/GMP.

11-2 GLP Report

Details on setting parameters to output GLP/GMP compliant reports via printer or PC.

Title block and end block

Operation

Describes how to output Title and End blocks for GLP reports using the AD-8121B printer.

12. Underhook

Caution

Safety notes and usage instructions for the underhook, including dust protection.

13. Density Measurement (Specific Gravity)

Notes

Information about the density mode, its factory setting, and minimum display.

Formula to Obtain the Density

Provides formulas for calculating the density of a solid and a liquid.

Prior to Measurement: Changing the Function Table

Steps to enable and configure the density mode settings in the function table.

14. Programmable-Unit

Operation

Instructions on setting a programmable unit and performing weighing with it.

15. RS-232C Serial Interface

Transmission System

Details the RS-232C transmission system, form, rate, data format, and pin assignments.

16. Connection to Peripheral Equipment

16-1 Connection to the AD-8121B Printer

Describes how to connect and configure the AD-8121B printer with the balance.

16-2 Connection to a Computer

Information on connecting the balance to a personal computer via RS-232C or USB.

16-3 Using Windows Communication Tools (WinCT)

Explains the use of WinCT software for PC communication with the balance.

17. Commands

17-1 Command List

Lists commands for querying weight data and controlling the balance via RS-232C.

17-2 Acknowledge Code and Error Codes

Explains acknowledge and error codes transmitted between the balance and PC.

17-3 Settings Related to RS-232C

Details settings for RS-232C communication, specifically "Data output" and "Serial interface".

18. Maintenance

Cleaning and Handling

Provides instructions for cleaning the balance and handling it during transportation.

19. Troubleshooting

19-1 Checking the Balance Performance and Environment

Guide to checking balance performance, operating environment, and weighing methods for troubleshooting.

19-2 Error Codes

Lists common error codes displayed by the balance and their descriptions.

19-3 Asking For Repair

Instructions on contacting the dealer for service or repair when issues arise.

20. Options

HRA-02 USB Interface

Details the USB interface for transmitting data to a PC.

HRA-08 Ethernet Interface

Explains the Ethernet interface for LAN connectivity and data acquisition.

HRA-09 Built-in Battery Unit

Describes the battery unit for portable operation.

AX-FXi-31 Main Unit Cover

Mentions the main unit protective cover.

21. Specifications

General Specifications

Lists key specifications like weighing capacity, display, repeatability, linearity, and environment.

Counting Mode Specifications

Specifies parameters related to counting mode, such as minimum unit mass and number of samples.

Percent Mode Specifications

Details parameters for percent mode, including minimum 100% reference mass and display.

Interface and Physical Specs

Covers interface details, calibration weights, dimensions, power, and net weight.

22. External Dimensions

Dimensions Diagram

Provides a detailed diagram showing the external dimensions of the balance.

23. Terms/Index

Terms

Defines important terms used throughout the manual.