ATI Series D12 Toxic Gas Transmitter with H10 Smart Sensor
Revision N (7/15) 47
Passes= 267
Failures= 1
Retries= 2
►Reset(Y/N)=NO
>Menu>Setup>Auto-T>History
11.1 Cl2
0.25PPM 0.26mA
0.07mAH Used
►Exit
>Menu>Setup>Auto-T>GasGen
Auto-test History
The Auto-test History page provides a summary of passes, failures, and
retries, which are maintained in the sensor memory. Since three
attempts are made, there are always two retries before a failure is
recorded. The total number of tests is the sum of the passes and failures,
and the number of gas generations is the sum of all three values.
The Reset function permits all counts to be zeroed. This is done by selecting Reset, and scrolling the
value to YES. Clearing the counts is not recommended, since this information can prove useful over
the lifetime of the sensor.
Gas Generator Information
The Gas Generator page lists information about the C18 gas generator.
The top line contains the generator gas code and the chemical
abbreviation of the gas. The second line shows the delta-Pass value
(described on the Auto-test Setup), and the amount of current required
generate that particular concentration. The third line displays the mAH
consumption of the generator. Selecting the Exit function returns the
display to the previous page.
Auto-test Sequence
When the Auto-test starts (automatically or manually), alarms are inhibited and by default, the loop is
fixed at 4mA (see Auto-test Setup Options and 4-20mA Setup). The transmitter will then step through
a series of displays representing the test sequence.
Alarm relays are inhibited during Auto-test, and for up to 10 minutes afterwards during the recovery
period. If a gas leak occurs during the recover period, will cancel the alarm inhibit and revert to normal
operation. A gas leak is presumed when the concentration rises to 50% of the full-scale range, or
higher.
While the alarms are inhibited during Auto-test, the 4-20mA output will usually be at a fixed level
(Override_mA=YES). The output override may be disabled by setting Override_mA=NO, however,
steps should be taken to disable receiver alarms in the control room.
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