D12
EX-IR
Gas Transmitter with IR Smart Sensor
Dec 2019 ( 85-0004 Rev A)
45
Open the regulator and allow gas to flow to the sensor. The displayed reading should begin to increase
and stabilize after about 3 minutes, depending on the gas type and range of the sensor. Once it has
stabilized, select “Span” and adjust the reading to match the applied gas, and then touch “Enter”. “Cal”
will appear briefly at the bottom of the page to signal the procedure was successful.
Disconnect the calibration adapter from the sensor and permit the readings to return to zero. Touch the
Esc
key repeatedly to return to the Main page. Alarms will remain inhibited and the current loop will be
fixed for 30 minutes after calibration. Once the reading is below the “Warning” alarm level, you may
terminate the alarm inhibit using the
Esc
key on the Main Display, see Main Display Alarm Inhibit
Sensor Calibration History
A calibration record is written into the sensor memory each time a zero or span calibration is performed.
Enough memory is reserved for 63 zero calibrations and 63 span calibrations. Zero and span calibration
records are accessed on the Sensor Calibration History page.
Figure 44. Sensor Calibration History Menus
Zero calibration records are composed of an index field (ie, record no/total records), date, concentration
reading, and gas name. The reading is recorded just before applying the correction, and can be thought of
as “drift” from the previous zero calibration. Upon entry, the index number is set to the most recent
calibration and may be scrolled down to view earlier calibration records.
Span calibration records are composed of an index field, date, and the concentration of the applied gas.
Like the zero records, the index number is set to index the most recent calibration and may be scrolled
down to view earlier calibration records.
Zero History
►1/1 12/27/18
0 %LEL
Methane
…History>Zero
Calibration
Zero ►History
Span
Temp= 21.1°C
…Setup >Sensor>Calibration
Cal History
►Zero
Span
…Calibration>History
Span History
►1/1 12/27/18
50 %LEL
Methane
…History>Span
Cal History
Zero
►Span
…Calibration>History