Azbil KFDB, Руководство пользователя

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(c) Set the integral mechanism to the full open state (the minimum integral time).
Move the SP pointer so that the output air pressure becomes 50 %FS (59.1 kPa {443
mmHg}).
(d) After the output air pressure is stabilized, set the reset mechanism to the fully closed
state (the maximum integral time) and align the two pointers together at 50 %FS.
(e) Adjust the length of the deviation link so that change in output pressure when the
proportional band is set to 20 % (INC. MEAS. INC. OUT and DEC. OUT) is not
greater that 0.8 kPa {6 mmHg}.
(f) Adjust the flapper adjustment pin so that change in output pressure when the
proportional band is changed from 20 % to 500 % is not greater that 0.8 kPa
{6 mmHg}. (If the output pressure is larger when the proportional band is 500 % than
that when 20 %, turn the pin clockwise.)
(g) With the proportional band set at 500 %, adjust the feedback adjustment pin so that
the output pressure becomes 59.1±0.3 kPa {443±2 mmHg}. (The output pressure
increases as you turn the pin clockwise.)
(h) Repeat the procedure of (e), (f) and (g) so that the output pressure becomes 59.1±1.2
kPa {443±9 mmHg} when the proportional band is within a range of white figures 50
to 500 to yellow figure 6.7 kPa or 59.1±2.4 kPa {50 or 443±18 mmHg} at other ranges.
Note 1: By the procedure of (d), a pressure of approximately 59.1 kPa {443 mmHg} is
sealed in the integral chamber of the controller. Since this pressure may vary
if the controller is left in this state for a prolonged period of time, perform
the above procedures as rapidly as possible.
Note 2: To switchover between the INC. MEAS. INC. OUT action (direct action)
and INC. MEAS. DEC. OUT action (reverse action), hang down once the
stopper by loosening its screw, turn the proportional dial passing through
the pin, move the stopper to the other side, and then fix the stopper in the
original state.
5-1-2. Calibration of Integral (Derivative) Unit
Exercise care when handling the restriction mechanism for the integral (derivative) action.
Even a slight scrape on the needle or seat may greatly affect the performance. In view of this,
the integral (derivative) restriction mechanism and the dial base are securely fixed. To calibrate
the instrument, proceed as follows:
(1) Integral Unit
(a) Set the setpoint (SP) at 50 %FS.
(b) Set the proportional band dial at 100 (%PV) in the direct action mode. When doing
this, make the integral restriction mechanism full open (less than 0.05 minutes). If the
derivative mechanism also is incorporated, make it also is incorporated, make it also
full open (less than 0.05 minutes).
(c) Balance the pneumatic controller output pressure at 46.7 kPa {350 mmHg} by
adjusting the PV input.
(d) Fully close the derivative restriction mechanism (30 minutes or more).
(e) Balance the pneumatic controller output pressure at 53.3 kPa {400 mmHg} by adjust
the PV input.