TELEDYNE OLDHAM SIMTRONICS OLCT 80 d, User Manual

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OLCT 80
GAS TRANSMITTER
USER MANUAL
100 NPO80GB
Revision F.1
14.5 Threaded joints
Threaded joints have different values than those specified in EN60079-1 standard. TELEDYNE
OLDHAM SIMTRONICS does not allow the repair of the threaded joints and shall not be held
responsible for any damage to the equipment or for any physical injury or death resulting from
any product modification.
The threaded joints on the
OLCT 80 may be lubricated to ensure protection against explosions.
Only non-hardening lubricants or non-corrosive agents without volatile solvents may be used.
Warning: silicone-based lubricants are strictly prohibited since they contaminate some of the gas
sensing elements used in the
OLCT 80.
14.6 Limitations of use
Gas detection cells have certain limitations that shall be known and understood by the user.
14.7
Overange
and exposition to specific components
•
A bump test and/or a calibration is recommended each time the detector has been
exposed to high gas concentration and moreover if the detector went to overange
condition.
•
Vapors from silicone or sulfur compounds can affect the catalytic sensor and thereby
distort the measurements. If the sensors have been exposed to these types of compounds,
an inspection or calibration must be performed.
•
High concentration of organic solvents (e.g. alcohols, aromatic solvents, etc.) or exposure
to gas concentration above the measuring range can damage electrochemical sensors. If
sensors have been exposed to such condition, a bump test or calibration must be then
performed.
•
In the event of high levels of Carbon Dioxide (CO2 > 1% vol.), electrochemical Oxygen
(O2) sensors can slightly overestimate the actual concentration of oxygen by 0.1 to 0.5%
volume.
14.8
Operation
under low oxygen levels
•
If an electrochemical detector sensor is used in an atmosphere comprising less than 1%
oxygen for over one hour, the measurement may be an underestimate.
•
If a thermocatalytic detector sensor is used in an atmosphere comprising less than 10%
oxygen, the measurement may be an underestimate.
•
If a semiconductor detector sensor is used in an atmosphere comprising less than 18%
oxygen, the measurement may be an underestimate.