Pulsar 100
Acoustic Calibrator

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Acoustic Calibrator
Pulsar 105 & 106

Overview

Models 105 and 106 are new technology sound calibrators that have been tested and formally EU Pattern Approved under certificate PTB-1.61.4028829 as meeting all the requirements of the latest International standard, IEC 60942 : 2003. This version of the IEC standard is far more stringent than previous versions and so far very few manufacturers have managed to meet it.

The two models are intended to calibrate, that is set the sensitivity, of all Pulsar sound level meters or any sound level meter that uses an approved Pulsar or Scientific Measurements microphone. Both models 105 and 106 give a standardised 1kHz tone - the frequency where all weighting networks are the same, at a pressure of 1Pascal which is a sound level of 94decibel. They have sensors to correct for temperature, humidity, barometric pressure and battery voltage so that they remain stable and accurate under almost any conditions where they are likely to be used.

Model 105 complies fully with Class 1 - the precision class, while model 106 fully meets the requirements for the calibration of industrial sound level meters used in almost all Health and Safety applications. As today, almost all approved sound level meters use the Internationally standardised "1/2inch" microphone, the microphone cavity is this diameter, but adapters are available for smaller microphones such as 1/4 inch.

Features

• Standard met :
  • Model 105 IEC 60942 : 2003 Class 1 (precision)
  • Model 106 IEC 60942 : 2003 Class 2
• Formal Approval :
  • EU approval by PTB to DIN EN 60942 : 2003
• Output level :
  • 94 dB which is 1Pa pressure
• Level accuracy :
  • Model 105 ± 0,2dB
  • Model 106 ± 0,4dB
• Output frequency :
  • 1Khz ± 2Hz
• Stability :
  • better than 0,1dB
• Distortion :
  • better than 1%
• Power :
  • 1 9 Volt battery (6LR61 or NEDA 1604)
• Control :
  • Push button to start
  • Automatic switch-off (can be user over-ridden)

Detailed Specification

As both models have been fully approved by an EU Official test laboratory (PTB) as complying with the standard IEC 60942 : 2003, for some of the finer points of the performance, over and above the data here this very comprehensive standard should be consulted. IEC 60942 is available on-line from (http://www.iec.ch/)

The calibrators have also been certified as complying with:-

• The EMC requirements of EN 50081-1 and EN 50082 -1
• The safety requirements of EN61010-1 : 1993 for portable equipment in pollution category 2
  

Reference conditions for testing

• Temperature : 23 degrees Celcius
• Static Pressure : 101,3 kiloPascal
• Humidity : 65% RH (relative humidity)
• Sound pressure : 20 micropascal

The units consist of a totally new transducer that is fed by a computer controlled sine wave. This is corrected by several sensors to make the very small corrections needed to comply with the stringent demands of IEC 60942 : 2003.

Mechanical Data

• Dimensions : 138mm long and 47mm diameter
• Cavity diameter : nominal half inch to IEC 1094-4
• Weight : 220 gram including battery
• Controls : Push button to start
• Indicators : Green LED to indicate operation
  

Each units is supplied with

• An operating manual
• A certificate of calibration
• A battery