Oxymat 7 - Siemens SIPROCESS GA700 Quick Start Manual

5.2.3.2

OXYMAT 7

Safety information
Note
Reference gas connection
● The reference gas connection with PVDF screwed gland is only suitable for connecting an
external reference gas pump.
See module nameplate of analyzer module 7MB3020-xAxxx-xxxx, letter A at 10th position
of the order number.
● The reference gas connection as a connection fitting with 6 mm diameter and clamp ring
screwed gland is only suitable for connecting reference gas pressures up to 5 000 hPa
(abs.).
See module nameplate of analyzer module 7MB3020-xCxxx-xxxx, letter C or D at 10th
position of the order number.
Note
Shutting off the sample gas inlet and outlet
If you shut off the sample gas inlet and outlet, make sure that the reference gas can escape,
for example, by a 2-way valve at the sample gas outlet. Alternatively, the connection of an
overpressure valve is possible. The trigger pressure must then lie approx. 0.1 MPa above the
selected sample gas pressure.
Otherwise, excessive reference gas pressure can build up in the analyzer unit. The result could
be destruction of the internal pressure sensor or its connection to the analyzer unit.
Do not switch off the reference gas! Aggressive sample gases can destroy the microflow
sensor.
Ensure that the reference gas flowing via the sample gas outlet is discharged in an
environmentally friendly manner.
Quick Start
Compact Operating Instructions, 05/2015, A5E31805656-03
Connecting
5.2 Gas connections
69