SGOES Infrared Combustible Gas Detector
820-0006
Operating Manual
Page 10
Protective Weather
Cover
The protective weather cover is UV resistant, static-dissipating black plastic. It is
designed with internal baffles and hydrophobic filters to eliminate water ingress into the
detection chamber without limiting the flow of gases and vapors.
A separate calibration cup is supplied for use during zero and span calibration of the
SGOES.
Internal Optics Heater
The SGOES is designed with a heating system that eliminates moisture, condensation
and frost from the detector lens.
3.0 Safety Considerations
Guidelines
Before installing and operating the SGOES, be sure to read this entire
manual. Failure to follow these guidelines could result in impaired
product performance and safety hazards.
For maximum safety:
•
SGOES wiring should comply with all governing electrical codes, standards and
regulations.
•
Never operate the SGOES if the casing is damaged.
•
Do not open the SGOES case when the unit is energized.
•
Perform regular testing and maintenance as outlined in the Maintenance section.
•
Ensure that alarm notification and control systems associated with the SGOES and its
detectors are switched off before any testing or maintenance to avoid unwanted
operation of alarms and control equipment.
Also see the individual sections in this manual for relevant specific safety guidelines.
Explosion Protection
Means
The SGOES is designed to be explosion-proof. Any user modifications to the device will
invalidate the explosion proof / flame proof certifications. All labeling must be intact and
visible. All Surfaces that are subject to disassembly or removal during installation or
maintenance must be installed as detailed in Appendix I and comply with the relevant NEC,
IEC and/or ATEX standards when replaced.
Hazardous location safety is ensured by:
•
Cabling entering into and out of the SGOES must utilize connections certified for the
hazardous location where the SGOES unit is installed. The cable gland should be able to
withstand the pressure of an explosion and prevent the spread of combustion into the
hazardous area. The connection points are marked in the drawings with word “Explosion”
and indicate permissible values. Limit the ambient temperature to no higher than 85 °C.
•
Use only with combustible gases with auto-ignition temperatures of 135 °C or higher.
•
All the bolts securing the parts and enclosure must be sufficiently tightened and prevented
from loosening by using spring washers or lock nuts.
