Azbil Corporation
Model
KFPA
,
KFTA
- Field Mount type Pressure Indicating Controllers
11
3: Installation
For installation and connections of the instrument, see the drawings of instrument
mounting dimensions.
3-1: Air piping
For piping, use copper pipes of OD 6 mm (ID 4 mm) with brass fittings HI-ZEX tubes.
(HI-ZEX: Tradename of polyethylene tubes manufactured by Mitsui Petrochemical
Ind. Ltd.)
Air supply
(a) The air supply must be clean, dry air of 140 + 14 kPa {1.4 + 0.14 kgf/cm²}.
Connect the air supply to the instrument via a filter and a pressure regulator. When
two or more instruments are used, provide a filter and a regulating valve for each
instrument.
(b) Connect the supply air to the SUP port of the air connection manifold of the
instrument.
~Note
Use of pipe sealing agent may be harmful to pipes. If sealing agent is
required, sparingly apply it to the male connector.
Output air
Connect the pipe for the control valve to the OUT port of the air connection manifold
of the instrument.
3-2: Connection method
(1) The air connection ports at the bottom of the instrument casing are as shown
below. Both Rc1/4 (PT1/4) thread and 1/4NPT thread are provided for each
connection item. Seal the unused ones with plugs.
(2) If an air set is provided, connect the air supply to the IN port of the air.
ESP:
External SP signal
X:
Receiving or transmitting pneumatic signal
OUT:
Controller output pressure
RES:
External reset signal
SUP:
Supply air pressure
- When in manual reset external
reset signal connection port is
connected to SUP through a pipe.
Figure 12 Pneumatic piping connection port
Rc1/4 female screw
1/4NPT female screw
ESP
X
OUT
RES
SUP
