PMA-12 manual

High-temperature extensometer PMA-12

High-precision high-temperature extensometer up to 1700° in air

General information

  • The system is supplied without a cable for the encoder signal.
  • The system also requires a TF amplifier (modulator, demodulator, signal amplifier). This is not included in the scope of delivery.
  • A mandatory accessory for motorized control is: A slide-in unit that controls the approach of the probe fingers via the internal probe attachment mechanism.

Characteristics

  • Version “V8” with higher sensitivity / lower nonlinearity (compared to “V7”).
  • Easy operation thanks to swivel-slide suspension and feed motor for probe fingers.
  • Quick test readiness.
  • Uncomplicated positioning of the probe fingers.
  • Output measuring length L0 is adjustable (from 6 to 50 mm), and the sample positioning mechanism is simple with a "probe finger is well positioned on sample" start-up indicator.
  • Cuff rings for adjusting the measuring length L0 not required on the tensile test specimen.
Scanning mechanismManual operationMotor operation
Probe finger pressure force1-3 N (300g) adjustable, horizontal
1-3 N (300g) adjustable, horizontal
Probe finger materialAl2O3, others optionalAl2O3, others optional
Probe finger positionPerpendicular to the sample longitudinal axisPerpendicular to the sample longitudinal axis
Measuring length L06 – 50 mm, continuously adjustable by the customer
6 – 50 mm, continuously adjustable by the customer
Permissible test vibrationmax. 0,5 Hz (amplitude-dependent)
max. 0,5 Hz (amplitude-dependent)
HousingAluminum, anodized, stainless steel
Aluminum, anodized, stainless steel
WeightApprox. 2 kgApprox. 5 kg
Measuring system
Measuring principleInductive Transformer (LVDT)
Measuring range (linear)± 10 mm, linear range
Resolution< 0,1 μm
Supply voltage5 V
Carrier frequency10 kHz into 1 kΩ
Signal output37,5 mV/V/mm
max. nonlinearity0,1% of the full measuring range
Permissible measuring system
Temperature		Max. 80 ° C
Our engineers

Thanks to our many years of industry experience, we understand your specific requirements down to the last detail.

In modern testing technology, high-temperature and vacuum furnaces are indispensable: they simulate exact extreme conditions for demanding material tests.

They thus form the foundation for development, quality assurance and research in key industries such as aerospace, automotive, electronics and high-performance materials technology.

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