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OHAUS PA313 User Manual

OHAUS PA313
116 pages
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SERVICE MANUAL
Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000

Table of Contents

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OHAUS PA313 Specifications

General IconGeneral
Capacity310 g
Readability0.01 g
DisplayLCD
Net Weight1.5 kg
InterfaceRS232
CalibrationExternal
Power SupplyAC Adapter or Batteries
Repeatability (Std. Dev.)0.01g
Operating Temperature Range10°C to 40°C
Units of Measurementg, oz

Summary

Chapter 1 Getting Started

1.1 Introduction

Overview of the service manual's content and structure.

1.2 Service Facilities

Requirements for the environment where balance servicing is performed.

1.3 Tools and Test Equipment Required

Lists special and standard tools needed for balance maintenance.

1.4 Specifications

Details technical specifications for various Pioneer balance models.

1.5 Balance Operation

Information on basic balance operation and mechanical functions.

1.6 Connecting the RS232 Interface

Instructions for connecting a computer via the RS232 interface.

1.7 RS232 Commands

Table of commands for serial communication with the balance.

Chapter 2 Troubleshooting

2.1 Troubleshooting

Guidelines for evaluating balance condition and performance.

2.2 Diagnostic Guide

A guide to help locate problem areas and probable causes.

2.3 Error Codes

List of error codes, their probable causes, and remedies.

Chapter 3 Maintenance Procedures

3.1 Preventive Maintenance

Precautionary steps for careful handling, storage, and cleaning.

3.2 Opening the Balance

Procedures for opening the balance to access components.

3.3 Load Cell Removal and Disassembly

Detailed steps for removing and disassembling load cells.

Chapter 4 Testing

4.1 Testing

Overview of operational and performance tests after servicing.

4.2 Operational Test

Procedure for checking basic balance functionality.

4.3 Segment Display Test

Procedure to verify all display segments are functioning correctly.

4.4 Performance Tests – Precision and Analytical Balances

Details on precision, off-center load, repeatability, and linearity tests.

Chapter 5 Drawings and Parts Lists

5.1 Precision Round Pan Balance: Housing & Parts

Exploded view and parts list for the Precision Round Pan Balance.

5.2 Precision Round Pan, InCal Balance: Housing & Parts

Exploded view and parts list for the Precision Round Pan, InCal Balance.

5.3 Precision Square Pan, InCal Balance: Housing & Parts

Exploded view and parts list for the Precision Square Pan, InCal Balance.

5.4 Precision Draft Shield Balance: Housing & Parts

Exploded view and parts list for the Precision Draft Shield Balance.

5.5 Analytical Balance: Housing & Parts

Exploded view and parts list for the Analytical Balance.

5.6 Precision Load Cell & Parts (including InCal)

Exploded view and parts list for Precision Load Cells.

5.7 Analytical Load Cell & Parts (including InCal)

Exploded view and parts list for Analytical Load Cells.

5.8 Block Style InCal Load Cell & Parts

Exploded view and parts list for Block Style Load Cells.

Appendix A Standard Calibration

A.1 Calibration

Overview of Span and Linearity calibration types.

A.2 Span Calibration

Procedure for standard span calibration of the balance.

A.3 Linearity Calibration

Procedure for standard linearity calibration of the balance.

Appendix B Service Calibration

B.1 Entering the Service Menu

Steps to access the service menu for advanced calibration.

B.2 Ramp

Test for A/D circuit performance and stability.

B.3 Span Calibration

Procedure for service-level span calibration.

B.4 3 Point- Linearity Calibration

Procedure for three-point linearity calibration.

B.5 5 Point- Linearity Calibration

Procedure for five-point linearity calibration.

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