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The HHSL402SD is a general-purpose handheld instrument that measures the noise level of an environment or the sound level produced by a piece of machinery. Using an integrated 13 mm (0.5') condenser microphone, the meter can measure sound levels from 30 to 130 dB with a resolution of 0.1 dB and show the results on a front-panel display. Several features and capabilities enhance the meter’s intelligence.

ONICON's Portable Clamp-on Transit Time Ultrasonic Flow Meter is a battery-operated flow meter specifically designed for use on a wide range of pipe sizes. The clamp-on design does NOT require a shutdown of flow or penetration of the pipe in any way when installing and operating this meter. Instead, precision-matched signal transducers are mounted on the pipe to accurately measure flow through the pipe wall.