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Thermal Isolator for IEPE Accelerometers
Made in the U.S.A.
Vibration Sensing Products

Thermal Isolator
for IEPE accelerometers

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Thermal Isolator Features:
  • Durable ceramic/stainless steel construction
  • Allows use of IEPE accelerometers on extended temperature surfaces
  • Up to 115°C (240°F) temperature differential, depending on ambient
  • In high temperature applications which exceed the temperature limits of IEPE (Integrated Electronic Piezo-Electric) accelerometers, and where the cost or the disadvantages of charge-type accelerometers and charge amplifiers are prohibitive, it is possible to use a Thermal Isolator with a low cost IEPE type accelerometer to measure vibration on elevated temperature surfaces. It is important to note that ambient temperature must be substantially lower for any significant reduction in temperature at the accelerometer mounting surface.

    As an example, a Thermal Isolator was tested on a surface with a constant 220 C temperature, with an ambient, circulating air temperature of 22 C. The graph below shows the temperature response at the opposite end of the Thermal Isolator (the accelerometer mounting surface). The red line represents the surface temperature, while the blue line represent the accelerometer mounting surface. An equilibrium temperature of 105 C was reached after approximately 30 minutes operation. This represents a differential of 115C, which is likely the highest temperature differential we might expect to achieve. Is is most important to note that except for the Thermal Isolator's low thermal conductivity, the cool, circulating air is the largest factor allowing this temperature differential. Since most IEPE accelerometers will function to 120 C, we can conclude that it is possible to use IEPE accelerometers with a Thermal Isolator on surface temperatures up to 235 C and still obtain reasonable data, without damaging the sensor. Note that in the long term, accelerometer life will be reduced at higher temperatures.

    Operating Specifications

    Frequency Range, ± 5% 1 Hz - 2.3 kHz
    Frequency Range ± 3dB 1 Hz - 4kHz
    Amplitude Range ±75 g peak
    Mounted Resonance 5 kHz
    Temperature Range Material Maximum
    Shock Limit 75 g peak
    Physical Dimensions 1.95" h x .1.0" diameter (5 x 2.5 cm)
    Weight 4.2 oz / 118 grams
    Material Ceramic, stainless steel
    Design Epoxy/Threaded assembly
    Mounting 1/4-28, or 10-32 tapped
    Mounting Torque 25 in - lb. (2.8 N-m)
    Ordering Information:
    Model: Manufacturer Part #: Description:
    Thermal Isolator 9356736-010 2", 10-32 thread hole at both ends
    Thermal Isolator 9356736-014 2", 1/4-28 thread hole at both ends
    Thermal Isolator 9356736-1014 2", 10-32 and 1/4-28 threaded holes on opposite ends

  • Ceramic thermal isolators which allow IEPE (ICP) accelerometers to be used on surfaces greater than 250° F (contact factory for application details.)
  • Click here for Compatible Products and Accessories

  • For more information, please call us today at 1-609-716-4130.
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