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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.
4.2 Zero adjustment by the screw
Zero point of the transmitter is adjustable by the outside screw with the mode setting switch
in the housing set at zero position. The
fi
gure shown below is an example of “Mode setting
switch” is attached.
(1) Set the mode setting switch to zero position.
Mode setting switch
Set switch to “zero”
for zero calibration
(2) Apply standard input pressure corresponding to new Lower Range Value
(3) Adjust output to 4mA by turning the outside screw
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
Decrease
Increase
Fine adjustment
: turning slowly
Rough adjustment : turning quickly
For zero suppression or elevation, apply the speci
fi
ed
input pressure in advance and adjust the output to 4mA
using the outside screw.
