ATI Series D12 Toxic Gas Transmitter with H10 Smart Sensor
Revision N (7/15)
Bump-Testing
“Bump-testing” refers to a test whereby the sensor is briefly exposed to gas in order to verify the
reading moves upscale from zero. It is recommended that it be performed at least once a month, using a
small amount of bottled span gas.
Exposing the sensor to any reactive gas could cause false alarms, and can be avoided by temporarily
inhibiting them. The most convenient method for doing so is from the Main Display, using the Esc key.
This also allows you to view the transmitter reading to verify the sensor’s response.
To quickly inhibit alarms…
Hold the magnet over the ESC key for 2 seconds, and remove it. This
will toggle the alarm inhibit mode on for 15 minutes (default value),
hold the current loop at 4mA (17.4mA for Oxygen sensors
7
), and cause
the “I” and “L” status indicators to appear. Repeat the procedure when
finished with the bump-test, and verify the flags disappear. See
“Inhibiting Alarms” for more details.
7
Oxygen sensors are usually exposed to air continuously, and do not require bump-testing.
Esc
2s
Inhibit alarms before
bump-testing.
To Next Page
