Castle GA216B is designed for general survey health & safety and engineering applications by industrial safety officers, occupational nurses, fire alarm installation & test engineers and industrial engineers. It gives clear results which meet the requirements of international standards. GA216B is a Sonus range entry-level Type 2 sound meter fully compliant with IEC 61672-1:2002. The difference between Type 1 and Type 2 is in the tolerance, for example: at reference frequency 1kHz, tolerance is ±1.1dB (Type 1) and ±1.4dB (Type 2); at 20Hz, tolerance is ±2.5dB (Class 1) and ±3.5dB (Class 2). Compliance with IEC 61672-1:2002 Class 2 and IEC 60651:1979 Type 2 is necessary for carrying out most noise assessment tasks in industry.

Sound Pressure (Lp) to 0.1 dB resolution
'A' and 'C' frequency weighting (toggle)
'Slow' and 'Fast' Time weighting (toggle)
Simultaneous measurement of Lp, Lmax, and Cpeak
Lmax - maximum Lp hold (rms)
Cpeak - maximum peak level
Elapsed time (running time hrs, min, sec)
Over Load and Under Range indication
Housed in tough, crack-resistant ABS plastic
Dimensions 60mm x 30mm (excluding pocket clip) x 135mm (210mm with microphone)
Weight 200g (without battery)

IEC 61672-1:2002 Class 2, IEC 60651: 1979 Type 2

The Castle SONUS B GA216B sound level meter is designed for general survey work and engineering applications by fire alarm installation & test engineers and industrial engineers. It gives clear results which meet the requirements of international standards. GA216B is a Sonus range entry-level Class 2 sound meter fully compliant with IEC 61672-1:2002.

Sound Pressure (Lp) to 0.1 dB resolution
'A' and 'C' frequency weighting (toggle)
'Slow' and 'Fast' Time weighting (toggle)
Simultaneous measurement of Lp, Lmax, and Cpeak
Lmax - maximum Lp hold (rms)
Cpeak - maximum peak level
Elapsed time (running time hrs, min, sec)
Over Load and Under Range indication

For fire alarm installation testing, the regulations states that a Class 2 sound meter should be used that is capable of measuring the maximum sound pressure level. The SONUS B is perfect for this application as it meets all of these requirements.

Standards
IEC 61672-1:2002 Class 2, IEC 60651: 1979 Type 2

Housed in tough, crack-resistant ABS plastic
Dimensions 60mm x 30mm (excluding pocket clip) x 135mm (210mm with microphone)
Weight 200g (without battery)