Emerson Rosemount 625IR Manual page 15

Manual
MS-00809-0100-3625
1.4.3 Options for mounting Rosemount 625IR in ducts or pipes
There are three possible configurations for mounting the duct flange:
Figure 1-10: Rosemount 625IR mounted in the duct flange kit
The operator can easily remove the detector from the duct to perform a gas test. The
nozzle is not used for gas testing.
Figure 1-11: 625IR mounted in duct flange with gas test line connected to the nozzle
Installed with the nozzle in front of the 625IR and a flexible tube connected from the nozzle
to the duct flange. With the environment shield installed, this solution works well when the
air is flowing in the duct. Without the environment shield, it is more difficult to do the gas
test, since the gas dilutes more quickly and therefore requires very high flow.
Rosemount 625IR
Installation
January 2024
15