2-18
IM MT300-02EN
Procedure
This instrument’s pressure input port is Rc1/4 female (input connection section specifications -P1),
1/4NPT male (input connection section specifications -P2), or VCO 1/4 female (input connection
section specifications -P3).
1.
For -P1 and -P2, wrap seal tape around the connector.
For -P3, clean the input port and the O-ring area, and then fasten a VCO body (accessory) to
the connector.
2.
Using two spanners, attach the connector to the pressure input port of the instrument.
Connector
Tube
Nut
Sleeve
Input port
3.
There is an input port on the front panel and another on the back panel. Cover the unused input
port with a plug.
This instrument is shipped with the input port on the back panel covered.
Note
• Nonflammable, nonexplosive, nontoxic, noncorrosive fluid gases and liquids can be measured.
• Affix a label (accessory) indicating the measured fluid near the input port.
• There is an input port on the front panel and another on the back panel. The connection method is the
same for both ports, but they cannot be used simultaneously.
• Make the connection secure to prevent the gas or fluid from leaking.
• Changing the measurement source from a gas to a liquid or vice versa will cause measurement errors.
Avoid using the instrument in this manner.
If you have to change the measurement source, open the plug and completely remove the gas or fluid
remaining in the tube, fill the tube with the new measurement source, and then measure the pressure.
• If internal cleaning is necessary, contact your nearest YOKOGAWA dealer (indicate the type of
measurement source).
Notes When Using the 1 kPa Model (-D00), 10 kPa Model (-G01/-D01)
On the 1 kPa and 10 kPa models, a slight hysteresis will occur at the zero point when switching
between positive and negative pressure sides.
To prevent this from happening, when switching between positive and negative pressure sides,
apply full-scale pressure once, open the input to air, perform a zero calibration, and then make the
measurement.
In addition, if you want to make accurate measurements in each positive and negative pressure
regions, we recommend performing the same procedure.
2.6 Connecting the Connector to the Pressure Input Port