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OHAUS MB120 Service Manual

OHAUS MB120
96 pages
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SERVICE MANUAL
MB90 & MB120
Moisture Analyzer

Table of Contents

Other manuals for OHAUS MB120

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OHAUS MB120 Specifications

General IconGeneral
Maximum Capacity120 g
Readability0.001 g
Heating TechnologyHalogen
Pan SizeØ 90 mm
CalibrationExternal Calibration
Operating Temperature Range10°C to 40°C
Operating Humidity10% to 80% RH, non-condensing
Linearity± 0.002 g
Repeatability (Std. Dev.)0.001g
Display4.3 inch
ConnectivityRS232
Power Supply100 - 240 V AC, 50/60 Hz

Summary

Chapter 1 - Getting Started

1.1 Introduction

Overview of the service manual's content and purpose.

1.3 Safety Precautions

Essential safety guidelines for servicing the moisture analyzer.

1.5 Tools and Test Equipment

Lists necessary tools and equipment for servicing.

1.7 Specifications

Details the technical specifications of the MB90/MB120 Moisture Analyzer.

1.9 Setup Navigation

Guides users through navigating the analyzer's setup menus.

Chapter 2 - Trouble Shooting

2.1 Trouble shooting

General approach to diagnosing and resolving issues.

2.2 Problem Solver

Table listing symptoms, possible causes, and remedies for common problems.

2.3 Testing

Procedures for performing operational and performance tests.

Chapter 3 - Maintenance Procedures

3.1 Preventive Maintenance

Guidelines for regular upkeep and cleaning of the analyzer.

3.3 Opening the MB90 and MB120

Step-by-step instructions for disassembling the analyzer.

3.4 Replacing Power Supply Components

Procedure for replacing the power supply and switch.

3.9 Replacing the Load Cell

Detailed steps for replacing the load cell assembly.

3.11 Replacing Heating Chamber Parts

Instructions for accessing and replacing heating chamber components.

Chapter 4 - Final Testing

4.1 Final Testing Overview

Introduction to the final verification process.

4.2 Operational Test

Procedure to check basic functionality after servicing.

4.4 Performance Tests

Procedures for testing precision, repeatability, and linearity.

Chapter 5 - Parts Identification & Diagrams

5.1 MB90 & MB120 Parts

Exploded view and list of serviceable components.

Appendix A - Weight and Temperature Calibration

A.1 Weight Calibration

Procedure for calibrating the analyzer's weight.

A.2 Temperature Calibration

Procedure for calibrating the analyzer's temperature.

Appendix B - Software Service Tool Instructions

B.1 Restore EEPROM

Procedure to restore scale data from EEPROM.

B.2 Replace Main PCB

Instructions for replacing the main circuit board.

B.3 Replace Control Board

Instructions for replacing the control board.

B.4 Diagnostics

Overview of diagnostic functions and commands.

Appendix C - Downloading Analyzer Firmware

C1. MB90_MB120 Firmware

Information on firmware compatibility and sources.

C2. Downloading Firmware

Steps for downloading and installing firmware updates.

C3. Clear Software

Procedure for clearing the analyzer's software.

C4. Reset Analyzer Password

Instructions for resetting user passwords.

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