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Thermo 42i User Manual

Thermo 42i
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Model 42i
Low Source
Instruction Manual
Chemiluminescence NO-NO
2-NOx Analyzer
Part number 102031-00
30May2006

Table of Contents

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Thermo 42i Specifications

General IconGeneral
Measurement PrincipleChemiluminescence
Detection Limit0.4 ppb
Resolution0.1 ppb
Power Requirements100-240 V AC, 50/60 Hz
Measurement Range0 - 20 ppm (other ranges available)
Linearity±1% of full scale
Operating Humidity Range0 - 95% RH, non-condensing
OutputsAnalog
DisplayBacklit LCD

Summary

Chapter 1 Introduction

Principle of Operation

Explains the chemiluminescence detection principle of the analyzer.

Specifications

Lists the analyzer's performance characteristics and technical data.

Chapter 2 Installation

Unpacking and Inspection

Procedures for safely removing the instrument from its packaging and checking for damage.

Setup Procedure

Step-by-step guide for connecting sample, air, exhaust, and power.

Startup

Instructions for powering on the instrument and initial warm-up procedures.

Chapter 3 Operation

Display

Describes the functions and information shown on the LCD graphics display.

Pushbuttons

Details the front panel pushbuttons and their intended actions.

Software Overview

Provides a high-level view of the menu-driven software structure.

Range Menu

Allows selection of gas units and defining concentration ranges.

Calibration Factors Menu

Details how to adjust calibration factors for accurate readings.

Instrument Controls Menu

Manages instrument settings like ozonator, PMT, and communication.

Diagnostics Menu

Provides access to system status, voltages, and temperatures.

Alarms Menu

Lists monitored items and their alarm status.

Service Menu

Accesses advanced functions for adjustments and diagnostics.

Chapter 4 Calibration

Equipment Required

Lists necessary items for performing instrument calibration.

Pre-Calibration

Outlines essential steps before starting the calibration process.

Adjusting Instrument Gain

Procedure for setting instrument gain for accurate measurements.

Zero and Span Check

Describes how to verify and maintain instrument calibration.

Chapter 5 Preventive Maintenance

Safety Precautions

Important safety guidelines to prevent injury or equipment damage.

Capillaries Inspection and Replacement

Procedure for checking and replacing instrument capillaries.

Thermoelectric Cooler Fins Inspection and Cleaning

Maintenance steps for the PMT cooler fins.

Pump Rebuilding

Instructions for overhauling the instrument's pump.

Chapter 6 Troubleshooting

Safety Precautions

Essential safety guidelines for troubleshooting procedures.

Troubleshooting Guides

Provides common malfunctions and their solutions.

Service Locations

Contact information for technical support.

Chapter 7 Servicing

Safety Precautions

Critical safety warnings for service personnel.

Replacement Parts List

Lists part numbers for instrument components.

PMT High Voltage Power Supply Replacement

Procedure for replacing the HV power supply.

Reaction Chamber Cleaning or Removal

Steps for cleaning or removing the reaction chamber.

NO2-to-NO Converter Replacement

Procedure for replacing the converter assembly.

Chapter 8 System Description

Hardware

Describes the physical components of the analyzer.

Software

Overview of the analyzer's software structure and tasks.

Electronics

Details the system boards and their functions.

I/O Components

Describes input/output interfaces and connectors.

Chapter 9 Optional Equipment

Internal Zero/Span and Sample Valves

Description of an optional valve system.

Mounting Options

Details different ways to install the analyzer.

Appendix A Warranty

Warranty

Provides terms and conditions of the product warranty.

Appendix B C-Link Protocol Commands

Commands

Lists and describes available C-Link commands.

Measurements

Details commands for retrieving measurement data.

Alarms

Describes commands for accessing alarm status.

Calibration

Details commands related to instrument calibration.

Measurement Configuration

Commands for configuring measurement parameters.

Hardware Configuration

Commands for managing hardware settings.

Communications Configuration

Commands for network and serial communication setup.

I/O Configuration

Commands for managing digital and analog I/O.

Record Layout Definition

Explains data format specifications.

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