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Honeywell 705 - User Manual

Honeywell 705
26 pages
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Sensors Type 705
Combustible Gas Sensor Ul Certified
Operating Instructions
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Summary

1. INTRODUCTION

1.1 GENERAL

Overview of the 705 Sensor, its application in hazardous areas, and its basic components.

1.2 PRINCIPLE OF OPERATION

Explains how the catalytic sensor detects combustible gas and compensates for ambient temperature changes.

1.3 ACCESSORIES

Lists available accessories for the 705 Sensor, including collecting cones, housings, and filters.

1.3.3 WEATHER PROTECTION HOUSING

Details the purpose and fitting of the Weather Protection Housing for exposed locations.

1.3.4 SAMPLE FLOW HOUSING

Describes the Sample Flow Housing for closed system sampling via pipelines.

1.3.5 GASSING POINT ASSEMBLY

Explains the Gassing Point Assembly for simplifying sensor calibration and test gas application.

1.3.6 FILTERS

Discusses the necessity and purpose of filters for sensor protection and sealing.

1.3.7 STAINLESS STEEL FILTER

Details the construction and function of the stainless steel mesh filter.

2. INSTALLATION

2.1 UNPACKING

Instructions for carefully unpacking the equipment and checking for damage or missing items.

2.2 SENSOR ORIENTATION

Guidance on the correct orientation for sensor installation, especially in exposed locations.

2.3 TERMINAL HOUSINGS

Describes the Terminal Housing as a mounting base and housing for the sensor's electronic circuit.

2.4 CABLE CONNECTIONS

Details the sensor's wiring connections, including color codes for sensitive, non-sensitive, and common elements.

2.5 FITTING SENSORS

Step-by-step instructions for installing the 705 Sensor, including safety precautions and thread engagement.

3. FITTING ACCESSORIES

3.1 COLLECTING CONE (00780-A-0032)

Steps to fit the Collecting Cone Assembly to the sensor, including filter installation.

3.2 WEATHER PROTECTION HOUSING (00780-A-2076)

Instructions for fitting the Weather Protection Housing to the sensor.

3.3 SAMPLE FLOW HOUSING (00780-A-0035)

Procedure for fitting the Sample Flow Housing to the sensor, including anti-seize compound application.

3.4 FILTER

Guidance on fitting the filter and keeping it clean from contaminants.

4. MAINTENANCE

4.1 GENERAL

Overview of maintenance tasks including cleaning, gasket replacement, and gassing the sensor.

4.2 CLEANING

Procedure for cleaning the sensor and accessories using methanol, with safety precautions.

5. GASSING THE SENSOR

5.1 SENSOR WITHOUT ACCESSORIES

Method for gassing the sensor when no accessories are fitted, suggesting a plastic bag.

5.2 SENSOR WITH COLLECTING CONE OR WEATHER PROTECTION HOUSING

Instructions for gassing sensors fitted with specific accessories, with cautions on nozzle pressure and wind.

5.3 SENSOR WITH SAMPLE FLOW HOUSING

Procedure for gassing a sensor equipped with a Sample Flow Housing.

6. REPLACEMENT PARTS

6.1 TERMINAL HOUSINGS

Lists part numbers for different Terminal Housings and their specifications.

6.2 MAINTENANCE SPARES

Lists part numbers for common maintenance spares like sensor assemblies and accessories.

7. TYPE 705 SENSOR ALTERNATIVE SYSTEMS

8. SPECIFICATION

CERTIFICATION APPROVALS

Details the UL certification for Class 1, Division 1, Groups B, C, and D.

DRIVE CURRENT

Specifies the drive current required for the sensor, supplied from the control equipment.

LINE RESISTANCE

Indicates where to find information regarding line resistance requirements.

HUMIDITY RANGE

Specifies the operating and storage humidity limits for the sensor.

OVERALL DIMENSIONS AND WEIGHTS

Provides physical dimensions and weight for the sensor and its accessories.

TERMINALS

Details the type of terminals used for cable connection and their specifications.

Summary

1. INTRODUCTION

1.1 GENERAL

Overview of the 705 Sensor, its application in hazardous areas, and its basic components.

1.2 PRINCIPLE OF OPERATION

Explains how the catalytic sensor detects combustible gas and compensates for ambient temperature changes.

1.3 ACCESSORIES

Lists available accessories for the 705 Sensor, including collecting cones, housings, and filters.

1.3.3 WEATHER PROTECTION HOUSING

Details the purpose and fitting of the Weather Protection Housing for exposed locations.

1.3.4 SAMPLE FLOW HOUSING

Describes the Sample Flow Housing for closed system sampling via pipelines.

1.3.5 GASSING POINT ASSEMBLY

Explains the Gassing Point Assembly for simplifying sensor calibration and test gas application.

1.3.6 FILTERS

Discusses the necessity and purpose of filters for sensor protection and sealing.

1.3.7 STAINLESS STEEL FILTER

Details the construction and function of the stainless steel mesh filter.

2. INSTALLATION

2.1 UNPACKING

Instructions for carefully unpacking the equipment and checking for damage or missing items.

2.2 SENSOR ORIENTATION

Guidance on the correct orientation for sensor installation, especially in exposed locations.

2.3 TERMINAL HOUSINGS

Describes the Terminal Housing as a mounting base and housing for the sensor's electronic circuit.

2.4 CABLE CONNECTIONS

Details the sensor's wiring connections, including color codes for sensitive, non-sensitive, and common elements.

2.5 FITTING SENSORS

Step-by-step instructions for installing the 705 Sensor, including safety precautions and thread engagement.

3. FITTING ACCESSORIES

3.1 COLLECTING CONE (00780-A-0032)

Steps to fit the Collecting Cone Assembly to the sensor, including filter installation.

3.2 WEATHER PROTECTION HOUSING (00780-A-2076)

Instructions for fitting the Weather Protection Housing to the sensor.

3.3 SAMPLE FLOW HOUSING (00780-A-0035)

Procedure for fitting the Sample Flow Housing to the sensor, including anti-seize compound application.

3.4 FILTER

Guidance on fitting the filter and keeping it clean from contaminants.

4. MAINTENANCE

4.1 GENERAL

Overview of maintenance tasks including cleaning, gasket replacement, and gassing the sensor.

4.2 CLEANING

Procedure for cleaning the sensor and accessories using methanol, with safety precautions.

5. GASSING THE SENSOR

5.1 SENSOR WITHOUT ACCESSORIES

Method for gassing the sensor when no accessories are fitted, suggesting a plastic bag.

5.2 SENSOR WITH COLLECTING CONE OR WEATHER PROTECTION HOUSING

Instructions for gassing sensors fitted with specific accessories, with cautions on nozzle pressure and wind.

5.3 SENSOR WITH SAMPLE FLOW HOUSING

Procedure for gassing a sensor equipped with a Sample Flow Housing.

6. REPLACEMENT PARTS

6.1 TERMINAL HOUSINGS

Lists part numbers for different Terminal Housings and their specifications.

6.2 MAINTENANCE SPARES

Lists part numbers for common maintenance spares like sensor assemblies and accessories.

7. TYPE 705 SENSOR ALTERNATIVE SYSTEMS

8. SPECIFICATION

CERTIFICATION APPROVALS

Details the UL certification for Class 1, Division 1, Groups B, C, and D.

DRIVE CURRENT

Specifies the drive current required for the sensor, supplied from the control equipment.

LINE RESISTANCE

Indicates where to find information regarding line resistance requirements.

HUMIDITY RANGE

Specifies the operating and storage humidity limits for the sensor.

OVERALL DIMENSIONS AND WEIGHTS

Provides physical dimensions and weight for the sensor and its accessories.

TERMINALS

Details the type of terminals used for cable connection and their specifications.

Honeywell 705 Specifications

General IconGeneral
BrandHoneywell
Model705
CategoryAccessories
LanguageEnglish

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