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OHAUS PA1502 User Manual

OHAUS PA1502
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 PA1502 Specifications

General IconGeneral
Capacity1500 g
Readability0.01 g
CalibrationExternal
DisplayLCD
Linearity±0.02 g
Repeatability±0.01 g
InterfaceRS232
Power SupplyAC Adapter
Stabilization Time2 seconds
Weighing Unitsg, oz, ozt, dwt, ct, gn
Operating Temperature10°C to 40°C

Summary

Getting Started Guide

Introduction to Ohaus Pioneer Balances

Overview of the Ohaus Pioneer balances and manual contents.

Service Facilities Requirements

Essential environmental and workspace conditions for servicing balances.

Tools and Test Equipment for Service

Lists special and standard tools required for balance maintenance.

Ohaus Pioneer Balance Specifications

Detailed technical specifications for various Pioneer balance models.

Balance Operation and Components

Explains basic balance operation, controls, and load cell mechanics.

RS232 Interface Connection

Details on connecting the balance to external devices via RS232.

RS232 Command Set

List and function of commands for balance communication via RS232.

Troubleshooting Procedures

General Troubleshooting Steps

Standard methodology and initial checks for balance issues.

Diagnostic Guide for Balance Faults

A guide to help locate probable causes and remedies for balance symptoms.

Error Codes and Resolutions

Explains common error codes displayed by the balance and their solutions.

Maintenance and Repair Procedures

Preventive Maintenance Guidelines

Precautionary steps and checklist for routine balance maintenance.

Opening the Balance

Step-by-step instructions on how to safely open different Pioneer balance models.

Load Cell Removal and Disassembly

Detailed procedures for removing, disassembling, and servicing load cells.

Main Printed Circuit Board (PCB) Replacement

Procedure for replacing the main PCB when other remedies fail.

Disassembling Analytical Load Cells

Steps for disassembling the load cell assembly of analytical models.

Block Style Load Cell Removal & Replacement

Procedure for replacing a block style load cell using a kit.

Setting the Up/Down Stop Screw

Procedure for adjusting the Up/Down Stop Screw on block style load cells.

Balance Testing and Performance Verification

Testing Requirements

Conditions and preparation needed before performing balance tests.

Operational and Display Tests

Procedure for basic operational checks and segment display verification.

Performance Tests

Series of tests to determine balance accuracy and performance against specifications.

Parts Lists and Diagrams

Precision Round Pan Balance Housing & Parts

Exploded view and parts list for precision round pan balances.

Precision Round Pan, InCal Balance Housing & Parts

Exploded view and parts list for precision round pan InCal balances.

Precision Square Pan, InCal Balance Housing & Parts

Exploded view and parts list for precision square pan InCal balances.

Precision Draft Shield Balance Housing & Parts

Exploded view and parts list for precision draft shield balances.

Analytical Balance Housing & Parts

Exploded view and parts list for analytical balances.

Precision Load Cell & Parts

Exploded view and parts list for precision load cells, including InCal.

Analytical Load Cell & Parts

Exploded view and parts list for analytical load cells, including InCal.

Block Style Load Cell Assembly & Parts

Exploded view and parts list for block style load cell assemblies.

Standard Calibration Procedures

Calibration Overview

Description of Span and Linearity calibration types for Pioneer balances.

Span Calibration

Procedure for setting the balance's zero and maximum weighing range.

Linearity Calibration

Procedure for minimizing weight deviation across the balance's range.

Service Calibration Procedures

Entering the Service Menu

Steps to access the service menu for advanced calibration.

Ramp Test

Procedure to check the A to D circuit's performance.

Service Span Calibration

Advanced span calibration using the service menu.

3-Point Linearity Calibration

Procedure for three-point linearization calibration.

5-Point Linearity Calibration

Procedure for five-point linearization calibration.

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