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8.2.2.3
Characteristics and Special precautions for oxygen detectors
When the transmitter is powered up or the measurement sensor is replaced, it takes between
30 and 60 minutes for the measurement to stabilise at 20.9% v/v in pure ambient air.
The use of an oxygen-rich atmosphere (> 25%) can compromise safety.
8.3
Markings
8.3.1
Flameproof certified version: OLC 20d and OLCT 20 d
OLDHAM
F – 62027 Arras
0080
OLC 20d or OLCT 20d
II 2GD
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP66
Tamb : -20°C to 70°C
INERIS 01ATEX0004X
Read instruction manual
WARNING: Do not open when energized
Serial number, year of manufacture
8.3.2
Intrinsic safety version: OLCT 20 i
OLDHAM
F – 62027 Arras
0080
OLCT 20i
II 1 GD
Ex ia IIC T4 Ga
Ex ia IIIC T135°C Da IP66
I M1 Ex ia
I Ma
Tamb : -20°C to 70°C
INERIS 01ATEX0004X
Read instruction manual
WARNING: Do not open when energized
Serial number, year of manufacture