SpyGlass Open Path Combustible Gas Detector

The Spyglass system detects hydrocarbon gases by analysing the absorption of radiation caused by gases in the atmosphere and comparing it to background atmospheric absorption. This is accomplished between a pair of units: a Flash Source and a Detector that can monitor a distance of up to 200 metres. 

Spyglass Gas Detectors are robustly designed and can handle the toughest environments: 316L stainless steel housings that meet IP66/IP68 and NEMA 250 6P egress standards; circuit boards epoxy coated for protection; MIL-C-810C testing for humidity, salt, fog, vibration, mechanical shock and temperature extremes; and SIL-2 approval per IEC61508 is a final statement in reliability. 

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Description

Technical Description – Spyglass Open Path Combustible Gas Detector

The Spyglass is an open path detection system which provides continuous monitoring for combustible hydrocarbon gases. It employs “spectral fingerprint” analysis of the atmosphere using the Differential Optical Absorption Spectroscopy (DOAS) technique. The Spyglass consists of a Xenon Flash infrared transmitter and infrared receiver, separated over a line of sight from 23 ft (7m) up to 660 ft (200m) in extremely harsh environments where dust, fog, rain, snow or vibration can cause a high reduction of signal. 

A Closer Look

IMMUNITY TO FALSE ALARMS 

The Spyglass is totally immune to interference from sunlight or any other sources of radiation such as flare stacks, arc welding or lightning  

PERFORMANCE IN ALL WEATHERS 

The Spyglass high power xenon lamp will compensate for changing weather conditions, including rain, fog, mist, snow and makes it immune to influences from solar radiation, arcwelding, stack flares or vibration from machinery. 

SIMPLE TO ALIGN AND COMMISSION 

One person can easily align and commission the system without the need for special training or skills. After an initial coarse adjustment by eye, a telescope is fitted allowing fine adjustment to optimized the adjustment for maximum signal strength. 

The Specs at a Glance

  • Detects Hydrocarbon gases including methane, ethylene, Propane, Ethane, Butane etc. 
  • High reliability – MTBF minimum 100,000 hours 
  • Detection range: 7-200m in three different models (same detector different sources) 
  • Built in event recorder – real time record of the last 100 events 
  • Fast connection to Hand-Held for prognostic and diagnostic maintenance 
  • Heated optics
  • SIL2 approved, per IEC61508 
  • 0-20mA 
  • HART protocol for maintenance and asset managements 
  • RS-485, Modbus Compatible 
  • User programmable via HART or RS-485 up to 256 detectors can be linked 
  • 3 years warranty 
  • Ex approval: 
    • FM/FMC approved per – Class I Div 1 Group B, C and D; Class I, II Div 1 Group E, F and G 
    • ATEX & IECEx approved per – Ex d e ib [ib Gb] IIB + H2 T4 Gb; Ex tb IIIC T135°C Db 
    • Performance test: Approved to FM6325 and tested per EN60079-29-4 by FM

Data Sheet – SpyGlass

Data Sheet – SpyGlass Specs

LOS Tilt Mount

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LOS Dim Drawing

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LOS Terminal Wiring - Receiver

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LOS Terminal Wiring - Transmitter

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IECEx Certificate of Conformity

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