Sample cell, Sample cell main gas line main gas line – COSA Xentaur Xentaur HDT User Manual
Page 14
Section 2: Sensor and Sampling Techniques
page 7
Refer to the ESS literature for more information.
If the resources to make your own sample system are avail-
able, the following two diagrams may be used as a guideline
to configure a simple system.
It is generally recommended to measure at ambient pressure
for the following reasons:
•
The readings will not be affected by variations in line
pressure.
•
The risk of exposing the sensor to liquid water is signif-
icantly reduced.
HDT
4-20mA loop cable
Exhaust
Regulator or
Needle V
alv
e
Safety shut-off Valve
Extractive Installation, Sensor
Measuring at Line Pressure
HDT
4-20mA loop cable
Exhaust
Regulator or
Needle Valve
Extractive Installation, Sensor
Measuring at Ambient Pressure
Sample Cell
Sample Cell
Main
Gas Line
Main
Gas Line
Xentaur Hybr
id
De
wpoint T
ransmitter
Loop P
o
w
e
r 5V
-28V DC
, will dr
a
w
4/20mA ( pin1= +V
E
; pin2= -V
E
)
Xentaur Hybr
id
De
wpoint T
ransmitter
Loop P
o
w
er 5V
-28V DC
, will dr
a
w
4/20mA ( pin1= +V
E
; pin2= -V
E
)