Azbil KFDB, Руководство пользователя

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Chapter 5. CALIBRATION AND ADJUSTMENT OF DEVIATION
GENERATING MECHANISM
Align together the PV pointer and SP pointer as described in the following:
Fig. 5-1. Deviation Generating Mechanism
(1) Set the PV pointer of approximately 50 % on the scale either by removing the link which
runs from the receiver unit or by making the PV input approximately 50 %.
(2) Align the SP pointer with the PV pointer by adjusting the setpoint knob for a local type
of instrument or by applying a corresponding external setpoint pressure for a case type of
instrument.
(3) Inset the adjustment pin (1.2 mm dia.) through the adjustment pin hole.
(4) If the SP pointer has not been accurately aligned with the PV pointer, align it accurately by
means of the SP pointer adjustment screw. If the screw does not rotate smoothly, loosen
the mounting screw. After the adjustment is over, tighten the screw securely. Connect a
pressure gauge of Class 0.5 to the OUT port and an air supply of 140 kPa {1.4 kgf/cm} to
the SUP port.
5-1. Calibration and Adjustment of Controller Mechanism
5-1-1. Balance Adjustment of Proportional Band of Controller
Remove the dial stopper by loosening its screw and then proceed as follows:
(a) Set the proportional band at 500 %.
(b) Set the SP and PV pointers at 50 %.