New Acoustic Calibrators

Two new products from Pulsar Instruments (UK) lead to a significant
improvement to noise measurements, as the company has just obtained full and formal EU Approval for their new acoustic calibrators
models 105 and 106.
Acoustic calibrators are an essential piece of equipment in that
they set and check the sensitivity of your sound level meter to ensure
that it reads correctly. Without the use of a calibrator, it is almost
impossible to know if your sound level meter is reading within the
required legal accuracy - even if your meter is a fully approved unit and is supplied by one of the major corporations. Just a handful of
companies world-wide offer Approved sound level meters, but even with units from these manufacturers, all regulations insist that the meter is calibrated before and after every formal usage.
Until now, it has not been possible to be certain that your calibrator is accurate to the latest standards and able to calibrate your meter under almost all conditions of temperature and humidity.
Even worse is the problem that most acoustic calibrators change their output level at different altitudes and in different barometric conditions. The new PULSAR models 105 and 106 both contain sophisticated sensors that correct the output for all these affects and it is these that have allowed the units to be fully EU Pattern Approved.
Manufactured in the UK, to full ISO 9000 standards, the two new units meet the two Classes of the International calibrator standard IEC 60942 : 2003, the model 105 at the Class 1 precision level - normally used in laboratories - and the model 106 intended for use in the field particularly in Health and Safety measurements. In use the calibrator is simply fitted over the sound level meter`s
microphone and the "On" button pressed. Most modern meters will now set their sensitivity fully automatically, but of course if the calibrator itself is not accurate it is set to the wrong value. The new Approved models significantly reduce the chance of this happening.