Fujimoto Fuji Differential Pressure Transmitter FKK 4 - Manual (Page 35)

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Decrease
Increase
Note 1) If the transmitter is locked, it cannot be adjusted by the external adjustment screw.
Note 2) When a digital indicator is attached to the transmitter, make sure that the LCD lamp
“ZERO” is ON.
After adjustment, the transmitter should be kept energized at about 10 seconds to
write the adjustment results into memory.
Important
4.2 Zero Adjustment by the external 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 figure 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
For zero suppression or elevation, apply the
specified input pressure in advance and adjust the
output to 4mA using the outside screw.