Sound level calibrators

Precision sound calibrator Larson Davis CAL250 is a battery operated precision microphone calibrator for 1" microphones used for the calibration of sound level meters and other sound measurement equipment.

• Output level: 114 dB
• Output frequency: 251.2 Hz
• Standard: 1" microphone
• IEC 60942-1:2003 compliant
• Internal battery
• Output level independent of battery condition
• Adaptors: ¹⁄8", 1/4", 3⁄8", 1/2" microphones
• Array adaptor for 8 microphones simultaneously.

Precision sound level calibrator Larson Davis CAL200 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment with 1/2" microphones.

• Output level: 94 or 114 dB
• Output frequency: 1 kHz
• 1/2" microphone opening
• IEC 60942-1:2003 compliant
• Internal battery
• Output level independent of battery condition
• Adaptors: ¹⁄8", 1/4", 3⁄8" microphones.

Handheld sound level calibrator Larson Davis CAL150 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment.

It can provide an output level of either 94.0 or 114.0 dB (switch-selectable) at a frequency of 1 kHz. CAL150 includes an adaptor for 3⁄8" microphones. A 1/4" adaptor is also available as an optional accessory.

• Output level: 94 or 114 dB
• Output frequency: 1 kHz
• 1/2" microphone opening
• IEC 60942-1:2003 compliant
• Internal battery
• Output level independent of battery condition
• Adaptors: 1/4", 3⁄8" microphones.