Azbil KFDB, Руководство пользователя

Страница: 5 / 48

1
Chapter 1. GENERAL
1-1. Description
The KF Series Field Mounted Indicating Controller detects and indicates a process variable
(flow, pressure, liquid level, etc.), and transmits and indicates a pneumatic control signal (20 to
100 kPa {0.2 to 1.0 kgf/cm
2
}) by comparing the detected value with the setpoint value.
The setpoint is adjustable locally (manually) with the setting control on the front panel or
inside of the instrument or remotely (in a cascade system) with an external pneumatic signal.
It also is possible to transmit a pneumatic process variable signal (20 to 100 kPa {0.2 to 1.0 kgf/
cm
2
}).
The instrument can be converted to measure a flow (differential pressure), liquid level, or
pressure simply by changing the detector elements.
1-2. Structure
Mechanically, the instrument consists of a detector (meter) unit, transmitter unit, pneumatic
signal receiver unit, deviation detecting and indicating unit, controllers, manual loader,
pilot relay, case and door. Functionally, the instrument is comprised of a process variable
transmitter section including the detector unit, and a (receiving) indicating controller section.
Note: This manual covers the transmitter section and indicating controller section. For the
detectors, refer to respective operator’s manuals which cover procedures for connection
of the instrument to the process, instrument calibration setup, and preparation for
instrument operation.