For over 40 years the ‘Sieger’ name
has been a world leader in the design
and manufacture of gas detection instrumentation.
As part of the Honeywell Analytics group, Sieger continues to develop advanced and innovative sensing technology, to create highly reliable, fit for purpose, cost effective gas detection solutions for the most demanding of environments.
Experience in the design, manufacture, installation and maintenance of point infrared gas detection has resulted in a worldwide installed base of over 30,000 units operating from light industrial to the most demanding of offshore petrochemical applications.
This expertise has resulted in Honeywell Analytics offering a new dimension in the supply of reliable infrared point gas detection with the release of the Sieger Searchpoint OPTIMA PLUS.
Typical Applications - Offshore oil and gas platforms, Floating Production Storage and Offloading (FPSO) vessels, Tankers, Onshore oil and gas terminals, Refineries, LNG/LPG bottling plants, Gas compressor/metering stations, Gas turbine power plants, Solvent printing and coating plants.
Over 100 gas and vapour calibrations available. For a list of gases and vapours which Searchpoint OPTIMA PLUS can detect, contact us.

Data Sheet
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Why Searchpoint Optima Plus is the right choice...
The proven strengths of the original Searchpoint OPTIMA design
Experience gained from over
30,000 units installed worldwide
The latest technology and techniques used to develop the successful Sieger open path gas detector, the Searchline Excel
Improved reliability
Why Infrared?
Failsafe operation
Fast speed of response
Reduced routine maintenance
Immune to catalytic poisons
Long operating life
Works in inert atmospheres
Why Searchpoint Optima?
Can detect a wide range of hydrocarbon gases including solvents
Increased reliability with no moving parts
Increased stability from
self compensating optics
Immune to long term component drift
Remote functional gas test facility
Certified for North American
and European Hazardous areas
Why Searchpoint Optima Plus?
Increased false alarm rejection
with .2 SOFTWARE
Increased uptime with
contaminated optics warning
Dynamic Heating Control ensures condensation free optics
No undetected failures
Improved diagnostics
Integral event logging
Reduced power consumption
Certified to many hazardous area classification schemes including:
European (ATEX), UL, CSA and more
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