Specifications for the
BRUEL & KJAER 2238 Mediator Sound Level Meter
Product #3120

Standards

• IEC 651 – 1979 Type 1
• EN 60651 Type 1
• IEC 804 – 1985 Type 1
• EN 60804 Type 1
• Draft IEC 1672 / EN 61672
  –March 1998 Class 1
• ANSI S1.4 – 1983 Type S1

Microphone

• Type 4188 Prepolarized Free- field ( 0.5" )
• Condenser Microphone.

Nominal Sensitivity

• -30 dB

Frequency Range

• 8 Hz – 16 kHz ±2 dB

Capacitance

• 12 pF (at 250 Hz)

Measuring Ranges

• A, 25 - 140 dB
• C, 27 - 140 dB
• Linear, 33 - 140 dB

Indicator Ranges

• 80 dB, adjustable to give full-scale readings from 100 to 140 dB in 10 dB steps

Max. Peak Level

• 3 dB above full-scale reading
• Crest Factor = 10 : 17 dB below full scale reading

Memory

• 2 Mbytes, up to 500 measurements can be stored, including time stamp, complete set-up and calibration data.

Power

• 4 x 1.5V “AA” batteries

Battery Life

• 6 to 8 Hrs

Dimensions

• 25.7 cm x 9.7 cm x 4.1 cm (10.5” x 4” x 1.75”)

Weight

• 460 g (1 lb.)