Features & Applications:

This compact, easy to use Casella acoustic calibrator features an ergonomic design and a simple keypad to enable logical control of the unit’s functions. The calibrator incorporates a feedback microphone to ensure a stable tone for precise setting up of sound level meters and noise dosimeters. The innovative display gives the user status on the level, frequency and battery condition of the device. The units detect when the microphone is removed from the calibrator and switch off the tone thereby extending useful battery life for up to 3 years.

The new CEL-110 has been designed to comply with the recent changes to the third edition of the international standard for acoustic calibrators under the publication IEC 60942: 2003 to ensure accurate calibration over a wide range of temperature, humidity and pressure conditions, typical of fieldwork.

Applications:

The field calibration of sound level meters is an essential procedure when carrying out any type of noise survey. Calibration with an approved acoustic calibrator, both before and after each measurement, ensures that the meters are providing consistently accurate readings. This is necessary for monitoring according to relevant noise exposure standards such as OSHA, NIOSH, ISO etc.

Features:

• Applicable standard ANSI S1.40-1984 (R1997) Class 2C
• Level output 114.0 dB ± 0.4 dB
• Frequency output 1 kHz ± 2 Hz
• Custom LCD with warning icons
• Harmonic distortion < 1 %
• Operating temperature range 40 to 95°F (+5 to +35 °C) ± 0.3 dB
• Effect of humidity less than ± 0.3 dB in the range 30 to 90% reference to 65% RH (no condensation)
• Battery 9 V radio (MN1604, 6LR61)
• Battery life approx. 3 years typical use with alkaline type
• Battery auto off when microphone removed
• Size 2.8 x 1.6 x 4.0 in (71 x 41 x 100 mm)
• Weight 6.4 oz. (180 gm)
• Reference calibration conditions for stated accuracy 20°C, 101.3 kPa, 65% RH
• Includes CEL-4625 1/2" to 1/4" coupler