Mounting
Instruction Manual VisGuard 2 Extractive
14265E/1
21
5.3.3
Back pressure nozzle KZTN6 and pressure monitor KZTN7
Please observe the following points when using the back pressure nozzle KZTN6 and pre s-
sure monitor KZTN7:
In order to prevent water from accumulating in the junction hoses, the pressure monitor
must be installed higher than the back pressure nozzle.
The pressure monitor is connected to the back pressure nozzle using hoses. Unused
back pressure nozzles must be closed with a short piece of hose.
The back pressure nozzle KZTN6 generates a pressure differential that is monitored by the
pressure monitor KZTN7 and thus enables the sample flow to be checked (Section 4.2.3). On
multiple sampling systems, each channel can be monitored individually.
5.3.3.1
General information on mounting the back pressure nozzle and pressure monitor
The back pressure nozzle is inserted into the sample flow at the intended measuring point
using hose connections. The pressure monitor is fitted with a mounting flange that allows
for direct installation close to the back pressure nozzle.
On multiple sampling systems, the differential pressure is generated between the sample line
and valve unit and measured. A special connection piece with unrestricted passage – in con-
trast to the back pressure nozzle with narrowed cross -section – is installed in the sample line.
The second connection for the pressure monitor is made on the valve unit itself.
Component drawings:
KZTN6-MB
Dimensional drawing, PVC back pressure nozzle to pressure monitor
KZTN10-MB
Dimensional drawing, connection for differential pressure on multiple
sampling systems
KZTN7-MB
Dimensional drawing, pressure monitor KZTN7 with mounting flange
