ATI Technologies d12 series - Removing Generators; Installing Generators; Figure 33. Generator Removal

ATI Series D12 Toxic Gas Transmitter with H10 Smart Sensor
Revision N (7/15)
36
operator to verify the new sensor, full-scale range, and alarm settings
4
. The startup review is illustrated
in Figure 25.
If data logging is turned on (indicated by the “D” status indicator appearing on the Main Display), and
the sensor is replaced by one with a different part number, you will be 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
and Span calibration are not permitted.
NOTE: Sensors can take as long as 12 hours to stabilize (bias) if not previously stored in the
sensor keeper.
Removing Generators
When a gas generator is removed, and the auto-test control is “READY”, the transmitter displays a
count down page similar to that for the sensor. Although the generator is not critical to the normal
operation of the transmitter, attempting to auto-test without a generator would certainly fail. Selecting
“Cancel Fault” forces the auto-test control to “OFF”, which occurs by default on expiration of the
timer. The auto-test control must be changed back to “READY” when a new generator is eventually
installed. The display sequence associated with removing the gas generator is illustrated in Figure 33.
Figure 33. Generator removal
Installing Generators
When a generator is installed, the transmitter sequences the startup review, beginning with the
generator information, as depicted in Figure 25. If problems with the gas type
5
or range
6
are detected,
they are announced during review, and the auto-test control is set to OFF.
normal, and when it is eventually returned to the field, the field transmitter will restore its original settings. Always verify
settings of field transmitters.
4
After verifying the sensor, the transmitter copies the sensor settings to its local memory.
5
Some generators produce a surrogate gas, instead of the sensor’s target gas (see Auto-test)
6
Some generators may not produce enough gas to pass Auto-test on higher sensor ranges (see Auto-test.
Gas Gen. Removed
►Cancel Fault
00:59
Generator Removed
Gas Generator
Not Installed
Cannot Autotest
►Cancel Fault
Generator Removed
PPM
H2S
D
MENU
0.0
Main Display
Warning:
Changing sensor types will clear the data log.
Startup Review
Datalog Status
Logging is ON
11 days of 11
►Clear Datalog