The Casella Digital Impulse Sound Level Meter is ideal for the user who is new to noise measurement and those who only require an overall reading of the noise level to gain a better understanding of a noise problem.

The Casella Digital Impulse Sound Level Meter has all the capabilities of the Casella Digital Sound Survey Meter with the added benefit of a maximum hold facility to capture the highest level during the reading. The Impulse time weighting is also provided together with an on screen overload indicator that warns of any noise readings above the current range of the instrument.

• Lightweight and slim design fits in the pocket
• Two wide measurement ranges cover all noise levels between 30 and 135 dB(A)
• Slow, Fast and Impulse responses available
• 'A' and 'C' frequency weightings cover most applications
• Long battery life using 4 AAA alkaline cells
• Overload and battery voltage checks provided
• AC and DC outputs provide analog signals to other pieces of equipment
• Includes Certificate of Conformance

Spec Summary:

Accuracy:	±1 dB under IEC 651, 804 Type 2 and ANSI S1.4 Type 2 ref. conditions
Microphone:	¼" Electret microphone capsule with fixed preamplifier
Reference Conditions:	114 dB SPL, free field perpendicular incidence, 1 kHz, 68°F, 65% RH
Operating Temp. Range:	14 to 122°F operating (-4 to 140°F storage)
Effect of Humidity:	<0.5 dB 30% to 90% RH
Batteries:	4 x AAA Manganese Alkaline Cells
Battery Life:	20 hours typical (low battery indicator)
Dimensions:	10.2 x 2.8 x 0.8 in
Weight:	8 oz (with batteries)