System Leak Check - Honeywell Midas-M User Manual

See the Gas Table for the correct filter requirement for your application.
NOTE
Every sensor cartridge warranty: Typically, two years depending on the sensor type. The Bias
battery will last only about six months. After replacement, allow at least a day for the
cartridge to reach equilibrium.

System Leak Check

When performing a leak check, the Midas-M must be placed in Inhibit mode to prevent false
concentrations or faults to be activated when plugging the Sample or Exhaust Lines. Example:
O2 (oxygen) – plugging of the ports causes the O2 levels within the Midas-M flow path to be
depleted as the sample becomes stagnant. The result is the concentration levels begin to fall and
trigger the alarms for the O2 depletion.
1. Place the Midas-M into Inhibit.
2. Plug the Inlet Sample line.
3. The flow meter indicators will begin to drop and ultimately disappear within seconds.
4. Continue to keep the port plugged until the Midas-M reports an "
approximate time to fault is 24 seconds.
5. Remove the plug.
6. Allow 15 seconds or so to allow the Midas-M flow to stabilize then clear the fault by pressing
and holding 'X'
7. Plug the Outlet Exhaust line.
8. The flow meter indicators will begin to drop and ultimately disappear within seconds.
9. Continue to keep the port plugged until the Midas-M reports an "
approximate time to fault is 24 seconds.
10. Remove the plug.
Midas-M 66
" (Flow Fail) –
F41
" (Flow Fail) –
F41
User Manual