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IM MT300-02EN
Measure High-Pressure Fluids Properly
• Use tubes and pressure connectors that can withstand the pressure to be measured.
• Make sure that there are no leaks from the tubes, connectors, and joints and that the joints
are not loose. If the fluid under measurement leaks or if a joint comes loose, the pressure
can endanger the user or the surrounding instruments. Note that higher the pressure,
greater the danger.
• Depending on the amount or type of gas, if you are handling gas that is 1 MPa or higher,
supervision may be required under the High Pressure Gas Safety Act.
• Do not measure flammable, explosive, poisonous, or corrosive liquids.
Such an act can endanger the user.
• Do not measure substances or mixtures (dangerous fluids) in Group 1 defined in Directive
2014/68/EC Article 13(1)a.
• If high-pressure fluid or gas bursts out, do not bring your hand or body close to where it is
bursting out. High-pressure fluid or gas could penetrate through the skin, causing serious
injury.
• When you need to increase pressure, increase it slowly. If you increase the pressure
quickly, the force that causes the tube to straighten out will jerk the instrument or the tube.
This could endanger the user or the surrounding instruments.
Do Not Remove the Covers or Disassemble or Alter the Instrument
Removing covers and disassembling or altering the instrument are strictly prohibited.
Some sections inside the instrument have high voltages that are extremely dangerous. For
internal inspection and adjustment, contact your nearest YOKOGAWA dealer.
Measurement Category
The measurement category of this instrument is Other (O). Do not use it to measure the main
power supply or locations that fall under Measurement Categories II, III, and IV.
Install or Use the Instrument in Appropriate Locations
Install the instrument so that you can immediately remove the power cord if an abnormal or
dangerous condition occurs.
Manual CD
Never play this manual CD, which contains the user’s manuals, in an audio CD player.
Doing so may cause loss of hearing or speaker damage due to the large sounds that may be
produced.
Accessories
Use the accessories specified in this manual. Moreover, use the accessories of this product
only with Yokogawa products that specify them as accessories. Do not use faulty accessories.
Safety Precautions