iTRANS 2
FIXED POINT SINGLE OR DUAL GAS MONITOR
WITH DUAL ANALOG OUTPUTS
USER MANUAL
Revision 7.0
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, TELEDYNE OLDHAM
SIMTRONICS 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.
• iTrans2 Stand-Alone versions with on-board visible alarm are to be installed in ordinary
locations only; however, remote sensors can be installed in hazardous locations (Gas
dependent. Read Agency Approvals paragraph).
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