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MAN0889_Issue 3_03/13
The Searchline Excel Cross-Duct Gas Detector is an open path infrared gas detector for methane.
It will detect hydrocarbon gas mixtures where methane is the main constituent (>70% of the composition with
the balance being C
- C
2
Searchline Excel Cross-Duct is specifically designed for use where the path length is between 0.5 and 5
metres for applications such as air intake ducts. It consists of a Transmitter and Receiver unit, and a separate
Heated Reflector Panel.
The detector operates on the principle of infrared (IR) absorption. If a cloud of methane gas is present, part
of the infrared light is absorbed by the gas, causing a reduction in the signal received that is proportional to
the amount of gas in the beam.
The detector output signal is proportional to 0-100%LEL (Lower Explosive Limit) of gas.
Searchline Excel Cross-Duct is suitable for use in Zone 1 or 2 hazardous areas (International) and for
Class 1 Division 1 or 2 area applications (North America).
Note: THE INFRARED BEAM IS INVISIBLE AND EYE SAFE.
This handbook consists of the following parts:
•
Chapter 1
•
Chapter 2
•
Chapter 3
•
Chapter 4
•
Chapter 5
•
Chapter 6
•
Chapter 7
•
Appendix A
•
Appendix B
•
Appendix C
1. Introduction
hydrocarbons). For other gas mixtures please contact Honeywell Analytics for advice.
6
Introduction
Overview
A brief description of the system components
Installation and Operation
Important information regarding detector positioning, electrical
connections, power supply requirements, mechanical installation and
commissioning, including an installation check list
Maintenance
Regular maintenance requirements and instructions for functional
checks
Problem Solving
Specifications
Certification
Handheld Interrogator
Glossary
Accessories & Spare Parts
Searchline Excel Cross-Duct Technical Handbook
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