SC-1 CA-1/2″ & CA-1/4″ ADAPTER

3.313,59 kr

SC-1 + CA-1/2″ + CA-1/4″ sound calibrator, 94dBspl, 110dBspl

SKU: 230111 Category: Tag:



The SC-1 sound calibrator is a single-frequency dual-amplitude, self contained field calibrator used to quickly and precisely verify the accuracy and the sensitivity of microphones.

The unit generates a 1kHz reference tone at 94 and 110 dB SPL. The SC-1 consists of an amplitude-switchable constant frequency oscillator, a transducer and a microphone coupler. The coupler accepts a large variety of microphones.

Rational offers this unit pre-packaged in a carrying case with both the 1/2″ and 1/4″ adapters as well as with operating instructions and factory certified calibration chart. The calibrator uses a single 9 Volt battery (included).

NOTE:  The Rational RTA420 requires the 10mm calibrator adapter for use with the SC-1. 


  • Frequency 1kHz +- 0.2%
  • SPL 110dB – 94dB switchable
  • Accuracy +- 0.5dB at 20 Grad Celsius and 1013 mbar
  • ambient temperature range 0 – 45 Grad Celsius
  • Temperature drift < 0.02dB per Grad Celsius
  • Temperature drift frequency: < 0.05Hz per Grad Celsius
  • Storage temperature range -25 – 55 Grad Celsius (without battery)
  • humidity 5 bis 95% relative
  • Power supply 9V battery or accumulator
  • Housing Aluminium, PVC
  • Dimensions Dia. 40mm, Length 132mm
  • weight (without battery) 164g

Additional information

Weight 0.2 kg


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