The C326 Sound Level Calibrator verifies that the measurements of the C320 Sound Level Meter are accurate and is used at both the commencement and completion of a set of noise measurements to ensure accurate readings over time—for a long time. The C326 provides two calibrated reference levels: 94dB and 114dB at 1kHz. This enables you to adjust your C320 Sound Level Meter to read correct every time. The C326 Sound Calibrator is purpose built to calibrate the C320 with complete compatibility and meets the requirements of IEC651 Type 2 devices.

• IEC 60942 class 2, dual level sound calibrator. Battery operated, 94dB and 114dB at 1kHz.


• The calibrator required for the PST-C320 sound level meter.


• Conforms to IEC 60942 (2003) class 2, ANSI S1.40-1984


• 94dB and 114dB sound calibrator at 1kHz


• Accurate and simple to use


• Fits 1 inch and 1/2 inch microphones