Oldham iTrans 2, Installation And Operation Manual

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3
Warnings and Cautionary Statements
CAUTION: Failure to perform certain procedures or note certain conditions
may impair the performance of the monitor. For maximum safety and
performance, please read and follow the procedures and conditions outlined
below.
Oxygen deficient atmospheres may cause combustible gas readings
that use catalytic LEL sensors to be lower than actual concentrations.
Oxygen enriched atmospheres may cause combustible gas readings
that use catalytic LEL sensors to be higher than actual concentrations.
Calibrate the catalytic combustible gas sensor after each incident where
the combustible gas content causes the instrument to enter in the
OVER-RANGE alarm condition.
The catalytic and IR sensors are factory configured to accurately
monitor the gas for which they are designated. It should be noted,
however, that the LEL sensors WILL respond to other combustible
gases and are not gas-specific.
Silicone compound vapors may affect the catalytic combustible gas
sensor and cause readings of combustible gas to be lower than actual
gas concentrations. If the sensor has been used in an area where
silicone vapors were present, always calibrate the instrument before
continued use to ensure accurate measurements.
Sensor openings must be kept clean. Obstruction of the sensor
openings may cause readings to be lower than actual gas
concentrations.
Sudden changes in atmospheric pressure may cause temporary
fluctuations in the oxygen readings.
Alarms relays are non-latching.
When connecting 4-20 mA outputs to inductive loads, Industrial
Scientific - Oldham recommends using an isolation barrier in line with
the 4-20 mA signal.
Interior grounding terminal is to be used for grounding, the exterior
terminal is only to be used for bonding.