The field calibration of Sound Level Meters is an essential procedure when carrying out any type of noise survey both before and after each measurement sequence. This ensures that instruments are providing consistently accurate readings necessary for monitoring to ensure compliance with workplace and environmental noise regulations. The CEL-120 is therefore designed and manufactured to comply with the requirements of IEC 60942 2003 and ANSI S1.40 2006. These standards stipulate accurate calibration over a wide range of temperature, humidity and pressure conditions, typical of field work, ensuring accurate calibration in all conditions. The CEL-120 is compact and ergonomically designed with simplicity and ease of use being the highest priorities.

• A simple keypad for intuitive control, permitting calibration level changes when required

• A MEMS microphone and digital feedback loop to maintain the acoustic pressure

• IEC60942 Class 2 / Class 1

• Microprocessor control detects when the microphone is removed

• Low battery consumption, allowing batteries to last for up to 2 years of operation

120 Calibrator Datasheet - English

General:

Type: CEL-120/1: Calibrator to EN (IEC) 60942: 2003,

ANSI S1.40: 2006 Class 1

CEL-120/2: Calibrator to EN (IEC) 60942: 2003,

ANSI S1.40: 2006 Class 2

Calibration sound pressure level (over environmental range): CEL-120/1: 114.0dB ±0.4dB and 94.0dB ±0.4dB CEL-120/2: 114.0dB ±0.6dB

Calibration level (at reference conditions): CEL-120/1: 114.0 dB ±0.25 dB and 94.0 dB ±0.25 dB, CEL-120/2: 114.0 dB ±0.35 dB

Calibration Frequency: 1kHz ±1Hz

Harmonic Distortion: Less than 1.0%

Battery: 2 x 1.5V AAA (LR03)

Battery life: A typical operational life of 2 years

Dimensions: 75.5 x 54.0 x 37.0mm (2.9 x 2.1 x 1.4”)

Weight: 85g (0.19lb) including batteries