Pneumatic Connection; Operation; Checking Zero And Span - Samson 6000 Series Mounting And Operating Instructions

Operation

4. Screw on the cover as far as it will go.
Unscrew the cover until the first possible
safety position (notch) is reached.
5. Unscrew the fillister head screw to lock
the cover.
NOTICE
Loss of Ex d protection due to dam-
age to the cover's thread and/or the
connecting thread. The enclosure
cover must be firmly closed during
operation.

3.4 Pneumatic connection

The pneumatic connections for supply air
(SUPPLY 8) and output (OUTPUT 36) are de-
signed as threaded ports with G ¼ or
¼–18 NPT thread (see section 11 on
page 25).
Customary fittings for metal tubing or plastic
hoses can be used.
Supply air (see section 9 on page 20).
− Min. + 0.4 bar above the upper signal
pressure range
− Max. 10 bar · Type 6116-2: max. 6 bar
(see EC type examination certificate in
Appendix)
Note:

The supply air must be dry and free
of oil and dust (see section 9 on
page 20).
Read the maintenance instructions for up-
stream pressure reducing stations. Blow
10
through and clean all air pipes and hoses
thoroughly before connecting them.
NOTICE
Risk of property damage due to wa-
ter entering the device when a pipe is
used to extend the vent pipe.
Make sure that no water can enter at
the end of an extension pipe (mini-
mum cross-section of 28 mm² =
6 mm inside diameter) connected to
either vent elbow piece or directly to
the G or NPT connection.
4 Operation
See Fig. 2 on page 6.

4.1 Checking zero and span

The device converts the input signal propor-
tionally into the output signal.
The signal ranges are specified on the name-
plate.
In case of a mounting position that is not
horizontal or when the pressure gauge/
screw plug does not face upwards, zero and
span can be corrected by approx. 10 % us-
ing the electronics. To do this, proceed as
follows:
1. Unscrew the enclosure cover to access
the ZERO and SPAN potentiometers (4)
on the circuit board.
2. Connect a pressure gauge (minimum ac-
curacy class 1) to the converter output.
EB 6116 EN