Detcon 700 Sensor Duct Mount Kit - Manual (Page 5)

700 Duct Mount
Model 700 Duct Mount Kit Rev. 1.2 Page 1 of 5
1.0 Description
The Detcon Sensor Duct Mount Kit for Model 700 gas detection sensors allows a Detcon Model 700 gas
sensor assembly to be mounted so that its sensor is located inside of an air duct, while its transmitter, located
outside the duct, is still accessible for calibration and other adjustments. This method of installation is much
more economical than the typical sample draw type system that is normally used in such applications. This
instruction manual explains the installation, calibration, and maintenance procedures of the duct mount con-
figuration. Reference the instruction manual that came with your Detcon sensor assembly for further infor-
mation.
2.0 Principle of Operation
In operation, air flow through the duct enters the duct mount chamber through ports facing the oncoming flow
of air. Once inside the chamber the sample passes by the sensor and then exits through similar ports that face
the opposite direction. If any target gas is present in the chamber, the sensor output signals and/or alarm
functions, will respond accordingly as described in the sensor assembly instruction manual.
Figure 1 Sample flow diagram