T2A Transmitter • 31
4. If “Yes” is selected to reset the zero and calibration values:
5. Press the ADD button to select “Yes” to confirm that you want to reset the Zero and
Calibration values and to return the device to normal operating mode. If you do not wish
to continue to reset the Zero and Calibration values, press the SUB button to select “No”
to leave the Product Settings and Configuration menu and to return the device to normal
operating mode.
6. Press and release the MENU button to return to Normal Operating Mode.
NOTE:
If the T2A’s stored Zero and Calibration values are reset, the device MUST be zeroed
and calibrated for proper and safe operation of the device.
Maintenance
RKI recommends that our equipment be calibrated a MINIMUM of every 90 days, and
STRONGLY advise that calibration be performed every 30 days. Without knowing the
specific application, sensor assembly location, gas exposure and other factors, the company
recommends monthly calibrations – assuming no damage or potential damage has occurred to
the sensor and that there has not been a power outage to the sensor assembly. If damage has
occurred or the power supplied to the sensor has changed, a calibration should be completed
immediately.
Scheduled maintenance should include the zero and calibration of the sensor (see page 35)
and an alarm test (see page 24).
The sensor head should be kept free of airborne particles, dirt, mud, spider webs, bugs and
insects, and/or any other debris that could potentially cover or coat the sensor. Keeping the
sensor head clear of foreign articles will allow for proper operation of the device. A brief
inspection during scheduled maintenance should suffice, but dependent upon the location and
the environment in which the unit is installed, more frequent inspections may be warranted.
The T2A may be adversely affected by the exposure to certain airborne substances. Loss of
sensitivity or corrosion may be gradual, if such materials are present in sufficient
concentrations. The performance of the device may be impaired during operation in the
presence of substances that can cause corrosion on gold plating. Continuous and high
concentrations of corrosive gases may also have a detrimental long-term effect on the
product’s service life. The presence of such substances in an area does not preclude the use of
this device, but the likelihood of the shortened lifetime of the sensor element, as a result,
should be noted. Use of the T2A in these environments may require more frequently
scheduled maintenance to ensure safe and reliable system performance.
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