HALT - the G.R.A.S. quality mark

HALT - Highly Accelerated Lifetime Tests

HALT Calibration

HALT - the G.R.A.S. quality mark

G.R.A.S. is known for the world class measurement microphones - and not without reason. To make sure that our microphones can perform under real life conditions – and beyond – G.R.A.S. has created the testing standard HALT.


The HALT video 

Watch our HALT video to learn more about the way we make sure you get the best results every time

In the HALT video we take you through the four different types of stress test which we conduct on the microphones and simulate the handling and use a microphone is exposed to in real life conditions – and beyond.    

 

Your data safety

HALT data safety

We make sure you get the best results every time.

With G.R.A.S. microphones being put through HALT you will be able to minimize the down time in your prodution by having a reliable repeatability and in the end minimize the need to replacement.

Download the HALT report and learn more about HALT and your data safety here


Try to break it

The HALT recipe

To simulate the handling and use a microphone is exposed to when working outside the lab – in real life situations - we bake it, we humidify it, we shake it and we try to break it - all to make sure that you can trust your measurement results - every time.

HALT break it

HALT tested measurement microphones

HALT tests

HALT consists of four different types of stress tests:

  • Temperature stress test at constant and cyclic temperatures
  • Humidity stress test
  • Vibration stress test
  • Mechanical impulse stress test involving shock and drop