4 • T2A Transmitter
Warning Statements
The RKI Instruments, Inc. T2A Toxic Gas Monitor is Class I Division 1 Certified. The
assembly is able to maintain its certification at all times while in the field, simply by using the
non-intrusive calibration method which requires the use of an RKI-distributed magnet.
However, if the Moore lid is removed, for whatever reason, the T2A’s certification is no longer
valid.
To avoid invalidating the certification, complete all wiring configurations
BEFORE
putting
the T2A in the field. Once in the field, always use the RKI-distributed magnet to ensure non-
intrusive calibration.
Strong magnetic fields may interfere with the non-intrusive magnetic switches. A strong
magnetic field may momentarily active a switch, or permanently disable the switch to the “on”
or “off” position.
Do not cover the hole in the calibration cup, as this will cause the calibration to be inaccurate.
Danger Statements
DANGER: The RKI Instruments Inc. T2A is an ambient air Hazardous gas sensor assembly
and only monitors in the immediate vicinity of the sensor housing. A site survey is required in
order to determine the best placement and quantity of sensor assemblies. Improper installation
can lead to an undetectable gas leak which could result in personal injury or loss of life.
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