Samson 611 - Checking Span; Zero Adjustment (Versions with 0 to 20 Ma Input Signal)

36 EB 6116 EN
Operation
Example: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 indi-
cate0.2bar.
6. If this is not the case, readjust the zero
point accordingly with the ZERO potenti-
ometer.
6.1.2 Checking span
1. First check zero, if necessary (see sec-
tion6.1.1).
2. Settheinputsignalto20mA(upper
range value) using a suitable ammeter.
Example: the output signal at the pres-
suregaugeshouldnowindicate1.0bar
fora4to20mArange=0.2to1.0bar.
3. If this is not the case, readjust the span
accordingly with the SPAN potentiome-
ter.
ZERO
SPAN
OFF
ON
Terminals
Zero and span
adjusters
Switch to switch off
electronics
Fig.17: Zero and span correction
4. Astheadjustmentofzeroandspaninu-
ence each other, recheck both values and
correct them, if necessary.
6.2 Zero adjustment (versions
with 0 to 20mA input
signal)
If the device does not have a potentiometer
for zero, the zero point can only be adjusted
mechanically at the zero point adjuster (1.1).
Î Remove the front cover.
Î Insert a screwdriver through the hole in
thecoveroftheType6112i/pModule
(seeFig.16).