
D12
EX-IR
Gas Transmitter with IR Smart Sensor
Dec 2019 ( 85-0004 Rev A)
34
Sensor Installed
When a sensor is installed, the transmitter compares the type to the previously installed sensor. If they
match, the previous sensor’s settings are copied to the new sensor, if necessary
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. The transmitter then
starts the sensor review as shown in
Figure 22. If the types did not match, the review halts and waits for the operator to verify the new
sensor’s full-scale range, and alarm settings. After verifying the sensor, the transmitter copies the sensor
settings to its local memory.
Sensor Install Effects on the Data Log
When the sensor is replaced with one of a different gas type (ie, a different part
number), you are also prompted to clear the data log during review.
Once the sensor is installed, the transmitter executes a 5-minute (typical value)
warm-up period, during which alarms are inhibited, the 4-20mA output is held
at 4mA (17.4mA for Oxygen sensors), and Zero, Span and Auto-test are not
permitted.
M
AIN
M
ENU
Main Menu
The main menu provides direct access to the sensor calibration methods, data logger graph, and
transmitter settings.
Figure 26. Main Menu
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The transmitter sets the new sensor’s range, blanking, damping, and alarms to match the previously installed sensor, which
might cause confusion when transferring sensors from field transmitters to shop transmitters for calibration. During review, the
shop transmitter will display the settings of the previously installed sensor, which might not match the field transmitter.
Fortunately, this is not a real problem. The sensor may be calibrated as normal, and when it is eventually returned to the field,
the field transmitter will restore its original settings. Always verify settings of field transmitters.
Item
Select to …
Zero
Calibrate the gas sensor zero reading (see Sensor Zero Calibration
on page 43).
Span
Calibrate the gas sensor sensitivity (see Sensor Span Calibration
on page 44)
Graph
View the contents of the logged data as a graph (see
D on page 60).
Setup
View and configure transmitter settings (below).
Startup Review
Datalog Status
Logging is ON
11 days of 11
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