Yokogawa PK200 - Manual (Page 20)

IM 21B03D01-01E 5-2
5. OPERATION
<Example: 20 to 100Pa output signal for 4 to
20mA input signal>
Adjust the zero adjustment so that an output signal of
20kPa is obtained when a 4mA input signal is applied.
Table 5.2 Output Signals
Output Signal Code Output Signal
1 20 to 100kPa
2 40 to 200kPa
3 0.2 to 1.0kgf/cm 2
4 0.4 to 2.0kgf/cm 2
5 0.2 to 1.0bar
6 0.4 to 2.0bar
7 3 to 15psi
8 6 to 30psi
9 3 to 27psi
T0502.EPS
5.3 Calibration
CAUTION
Always perform calibration in a non-hazardous
area.
(1) For the model with A/M selector switch, please set
the A/M selector switch to A (Auto). (Turn the
switch counterclockwise.)
(2) Remove the converter cover.
WARNING
For flameproof specifications or intrinsically safe
explosion-proof specifications, first conduct a gas
detector check to confirm that there is no explo-
sive gas in the area.
(3) Apply supply air pressure to the current-to-
pneumatic converter.
For supply air pressure, see the data plate or Table
5.3 “Supply Air Pressure.”
Standard output applies for model suffix output
signal code “1, 3, 5, 7” and multiplied pressure
output for model suffix output signal code “2, 4, 6,
8, 9.”
Table 5.3 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
T0503.EPS
(4) Then input a 0% input signal.
Apply 4 mA for 4 to 20mA input or 10mA for 10
to 50mA input.
Control the zero adjustment so that the output air
pressure reaches the specified pressure.
For 0% output air pressure, see the data plate or
Table 5.4 “Output Signals.”
To increase output air pressure, turn the zero
adjustment clockwise. To decrease the pressure,
turn the zero adjustment counterclockwise.
For the model with reverse action (/RA), please
turn zero adjustment counterclockwise to increase
output air pressure. To decrease output air pres-
sure, please turn zero adjustment clockwise.
Table 5.4 Output Signals
Output Signal Code Output Signal
1 20 to 100kPa
2 40 to 200kPa
3 0.2 to 1.0kgf/cm 2
4 0.4 to 2.0kgf/cm 2
5 0.2 to 1.0bar
6 0.4 to 2.0bar
7 3 to 15psi
8 6 to 30psi
9 3 to 27psi
T0504.EPS
(5) Input a 100% input signal.
Apply 20mA for 4 to 20mA input or 50mA for 10
to 50mA input.
Control the zero adjustment so that the output air
pressure reaches a specified pressure.
For 100% output air pressure, see the data plate or
Table 5.2 “Output Signals.” (See Figure 5.3.)
To increase output air pressure, please turn span
adjustment clockwise. To decrease output air
pressure, please turn span adjustment counterclock-
wise. (See Figure 5.3.)