ATI
Model F12/D Gas Transmitter
Part 4
– Operation
36
O&M Manual (Rev-H)
. 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.
Generator Removed
Removing the gas generator causes the transmitter to “pop-up” the Generator Removed Display (below),
but
only if
the auto-
test control is set to “READY”. Otherwise, the transmitter displays the generator
review shown in
Error! Reference source not found.
, above, without causing
trouble alarm and pausing for the operator to disable Auto-test. The 4-20mA
operates normally, and no operator intervention is required at the panel.
Figure 38. Generator Removed Display
At the conclusion of the Generator Removed Display (Exit selected or timeout), the transmitter displays
the generator review shown in Figure 38
, which pauses 5 minutes for the operator to select “Disable”.
Selecting “Disable” forces the auto-test control to “OFF”, permanently, and prevents a trouble alarm. The
auto-
test control must be changed back to “READY” when a new generator is eventually installed. If
“Disable” is not selected in time, the transmitter will activate the trouble alarm and continue to wait for
“Disable” to be selected, or for a compatible generator or sensor to be installed (see on pg 44 for more
details).
Generator Installed
When a generator is installed, and no problems are detected, the transmitter starts the generator review
as depicted in Figure 38. If problems are detected, the transmitter starts the generator review as depicted
in
Error! Reference source not found.
. The following table lists the types of problems that can occur
ith an installed gas generator.
Note
Changing the sensor gas type will clear the data log. Electro-chemical sensors
may take up to 12 hours to stabilize if not stored in the sensor keeper.
Problem
Description
Wrong Gas Type
The generator is not compatible with the installed sensor.
Under-range
The generator cannot produce a gas concentration high
enough for the currently programmed sensor range.
Read Error
The generator has an internal memory error.
Startup Review
Datalog Status
Logging is ON
11 days of 11
►Clear Datalog
Gas Gen. Removed
►Reset Exit
00:59
Generator Removed
