Warnings in use


Pressure gauge and Thermometer in common

Malfunctions or poor accuracy can be happened when mishandled. Be sure to comply with followings.

  1. Do not drop or give a shock since product is a precision device.
  2. Hook a wrench when the joint thread is tightened or loosened.
  3. Do not put excessive force on the main body such as twisting by grabbing its housing.
  4. Maintenance and inspection per year recommended.

Pressure gauge

  1. Both performance and life cycle strongly depend on operating conditions. (temperature, humidity, installing position, vibration, working pressure) Follow details described in "Applications" in Documents.
  2. Set the window of working pressure by less than 2/3 of the maximum range as much as possible.
  3. Pressure medium is diverse like toxic, flammable and corrosive as well as things that require cleanliness. Follow details described in "Pressure Media Category and Special Treatment" in Documents so as to avoid any potential accidents by using a applicable pressure gauge. Thus, be sure to specify the name of the fluid when ordering if a media excepting non-corrosive liquids or gasses such as water, oil and air is used.
  4. High-rigidity piping should be required at a mounting area of the gauge to be supported by stocks alone for avoiding resonance.
  5. The gauge which is installed at an area generating intense vibration should be placed on a shock absorber and implement piping with low rigidity like flexible tube.
  6. A throttle screw or dampener for reducing vibration should be used when a pointer's indication of a pressure gauge is shaky.
  7. Siphon pipe, cooler or heater should be used for high and low temperature media.
  8. When a gauge covering safety window is installed, a space wider than 20 mm and more space around wall behind the gauge should be needed for releasing inner over pressure due to an accident of burst, and its window must be faced an appropriate direction to prevent an operator from any dangers.
  9. Vibration-proof pressure gauge should be used if indication of pointer is shaking even though there is no vibration in the equipment itself. If this is the case, possible cause is that piping is vibrating or resonating, most likely to be 40 to 60Hz as resonance point of a pressure gauge.
  10. A pressure gauge with zero adjuster is installed, following zero adjustment is implemented.


  1. Do not deforming such as bending the pipe at the temperature measuring part since malfunction or poor measurement accuracy can be detected.
  2. Install away from direct rain and vapor to prevent from pouring those on an indicator. Either hermetic or outdoor type device should be used in outside.
  3. Either hermetic or outdoor type device should be used when measuring temperature lower than zero-deg C for a long period of time even indoors.
  4. Install away from intensive vibration.
  5. Temperature measuring part should be entirely immersed in the measured objects taking its pressure, velocity, vibration and causticity into consideration and usage of thermowell covering the part is recommended referring to "Thermowell" in Documents for confirming conditions on velocity, vibration and so forth.
  6. Stainless steel temperature measuring part and thermowell should be used for stainless steel piping and tanks.
  7. Stainless steel thermowell for preventing from vibration should be used in case that measured fluid is placed in faster or greatly changing velocity.
  8. Stainless steel thermowell should be used in case that its length is 150 mm and longer.
  9. If a pointer is shaking even though there is no vibration in the equipment itself, possible cause can be the resistance of fluid. If this is the case, mechanical strength of thermowell should be fortified.
  10. Measurement of air-conditioning cold/hot water is feasible even when thermowell with thicker diameter is inserted 50 to 100 mm from the inner wall since there is few variation in temperature inside a pipe. If a thermowell is made longer than necessary, it can cause vibration.
  11. Keep the conduit of remote measuring thermometer not to bend less than R150 and firmly fix it to avoid shaking due to vibration.

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