4900002277 J22 TDLAS Gas Analyzer
14 SpectraSensors, Inc.
A0029800
1 Cover borehole for the securing screw
2 Securing screw to lock the cover
Protective Chassis
and Ground Connec-
tions
Before connecting any electrical signal or power, connect the protective and
chassis grounds (→ 34).
• Protective and chassis grounds must be of equal or greater size than any
other current-carrying conductors, including the heater located in the sample
conditioning system
• Protective and chassis grounds to remain connected until all other wiring is
removed
• Protective grounding wire current carrying capacity must be the same as the
main supply, at a minimum
• Earth bonding/chassis ground shall be at least 10 AWG (6 mm
2
)
Protective ground cable
•Analyzer: 2.1 mm
2
(14 AWG)
•Enclosure: 6 mm
2
(10 AWG)
The grounding impedance must be less than 1Ω.
1: Ground connections
1 Protective ground
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