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After adjustment, the transmitter should be kept energized at about 10
seconds to write the adjustment results into memory.
When a digital indicator is attached to the transmitter, it's necessary to
remove this indicator and to replace it in the same place by the zero/span
adjustment electronique circuit.
Mode setting switch
Set switch to “Span”
for Span calibration
(2) Apply standard input pressure corresponding to new Lower Range Value
(3) Adjust output to 4mA by turning the outside screw
(4) Then return to applying input pressure of zero again and make sure output is 4 mA.
Note :
1) If the transmitter is locked, it can't be adjusted by
the external adjustment screw.
2) When a digital indicator is attached to the transmit-
ter, make sure that the LCD lamp “ZERO” is ON.
INDICATION
4.3 Span adjustment by the screw
The measuring range for each transmitter is determinated according to its type.
Span is changed by the outside screw with the mode setting switch in the housing set at span
position. The
fi
gure shown below is an example of “Mode setting switch” is attached.
(1) Set the mode setting switch to span position.
Note :
1) After adjustment the span, reset the mode setting
switch to Zero position
Decrease
Increase
Fine adjustment
: turning slowly
Rough adjustment : turning quickly
