Optional accessories
10.2 Measuring chambers for the S505
10.2.1 Standard measuring chamber (A699 3500)
The S505 is supplied with a measuring chamber (Item no. A699 3500)
with a pressure range of 0.3 ... 1.5 MPa.
This measuring chamber is used to connect the compressed air to the
sensor using a 6 mm hose. The measuring chamber comes with a
parking function with which the sensor element can be kept in a dry
environment when it is not used. This helps decrease the response time
of the sensor whenever a new measurement is started.
On the measuring chamber there is a handle, indicating if the chamber
is currently in the parking or measuring position.
Before starting the measurement, please turn the handle to the
“Measuring” position. An internal valve is switched and the sensor is
now connected to the compressed air source, and the dry cell is sealed
in a separate chamber.
After the measurement is finished, please turn the handle to the
“Parking” position.
Remark: To work properly, this measuring chamber type (A699 3500)
needs a minimum inlet pressure of 0.3 MPa. For lower pressure
applications, the by-pass measuring chamber shall be used (A699
3501).
10.2.2 By-pass measuring chamber (A699 3501)
The by-pass measuring chamber can be purchased optionally and
provides a pressure range of 0.01 ... 1.0 MPa. It has the same
advantages as the chamber A699 3500, but instead of purging the air
into the environment, it comes with a 6 mm quick connector as the
outlet. This enables the chamber to be used in a by-pass measurement.
This chamber should be used in one of the following situations:
• The process application does not allow to purge air into the
environment.
• The inlet pressure is below 0.3 MPa.
22 S505
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