Yokogawa PK200 - Manual (Page 15)

IM 21B03D01-01E 4-1
4. WIRING AND PIPING
4. WIRING AND PIPING
4.1 Piping
4.1.1 Supply Air
For easy operation and maintenance, supply air must
be clean and dry.
IMPORTANT
Thoroughly study selection of an air supply
system, supply air suction point, installation of
the header, and air supply piping so that no
water, oil, or dust is carried into the current-to-
pneumatic converter via the piping.
Table 4.1 shows the air supply pressure for this
instrument.
For air consumption, see the standard specifications.
Table 4.1 Recommended Supply Air Pressure
Output Signal Code Output Signal Supply Air Pressure
1 20 to 100kPa 130 to 150kPa
2 40 to 200kPa 230 to 260kPa
3 0.2 to 1.0kgf/cm 2 1.3 to 1.5kgf/cm 2
4 0.4 to 2.0kgf/cm 2 2.3 to 2.6kgf/cm 2
5 0.2 to 1.0bar 1.3 to 1.5bar
6 0.4 to 2.0bar 2.3 to 2.6bar
7 3 to 15psi 19 to 22psi
8 6 to 30psi 34 to 37psi
9 3 to 27psi 34 to 36psi
T0401.EPS
4.1.2 Air Supply Piping
Connect air supply piping to the supply pressure
connection
SUP
of the converter.
Generally, use copper tubes of 6mm O.D. and 4mm
I.D., air piping, and coupling to install air supply
piping. After installing the piping, check for leakage.
4.1.3 Output Piping
Connect output air piping to the output connection
OUT
of the converter.
Generally, use copper tubes of 6mm O.D. and 4mm
I.D., air piping, and coupling to install output air
piping. After installing the piping, check for leakage.
4.2 General-Use and Flameproof
Type Wiring
4.2.1 Cable Selection
(1) Use twisted wires or cables with performance
equal to or better than that of 600V vinyl-insulated
cables (JIS C 3307) for wiring cables.
(2) Use shielded cables for wiring in a place suscep-
tible to noise influence.
(3) For wiring in an area where high or low ambient
temperatures exist, use wires or cables that meet
service environment requirements.
IMPORTANT
If the PK200 is flameproof and the ambient
temperature is 50
°C or more, use an external
cable having a maximum allowable heat resis-
tance of at least 70
°C in consideration of the
instrument’s generation of heat or the cable’s
self-heating.
(4) For use in an atmosphere where harmful gas,
liquid, oil, or solvent exists, use wires or cables
with materials sufficiently durable to such sub-
stances.