Samson 6000 Series, Mounting And Operating Instructions, Page: 11 / 40

EB 6116 EN 11
Operation
The zero point can only be adjusted me-
chanically at the zero screw (1.1) of the i/p
module.
NOTICE
Do not open devices with flameproof
enclosures when the electrical power
supply is connected.
Do not damage the cover's thread
and/or the connecting thread.
Risk of explosion!
Observe the explosion-protection
regulations.
ZERO
SPAN
OFF
ON
Fig. 6: Zero and span correction
Terminals
Zero and span ad-
justers
Switch to switch off
electronics
3. Set the supply air to 0.4 bar above the
upper output signal range and apply it to
the device.
4. Deactivate the switch-off electronics at
the slide switch (5).
Checking zero
5. Set the input signal to the lower range
value using a suitable ammeter (e.g. set
it to 4 mA for 4 to 20 mA range = 0.2 to
1 bar).
The output signal of the pressure gauge
should now indicate 0.2 bar. If this is not
the case, readjust zero accordingly with
the ZERO potentiometer (4).
Checking span
6. Set the input signal to 20 mA (upper
range value) using a suitable ammeter.
The output signal of the pressure gauge
should now indicate 1.0 bar. If this is not
the case, readjust the span accordingly
with the SPAN potentiometer (4).
Note:
As the adjustment of zero and span
influence each other, recheck both
values and correct them, if necessary.
Zero adjustment for special versions with 0
to 20 mA input signal
These versions do not have potentiometers to
adjust zero or span nor switch-off electron-
ics.
