Enviro Monitoring

A and C Weighted Digital Datalogging Sound Level Meter - 30dB to 130dB - 72-947

Digital sound level meter with USB interface. It is perfect for sound system testing, speaker system measurement and environmental noise level monitoring. This is designed to meet the measurement requirements of safety engineers, health, industrial safety offices and sound quality control in various environments.

Features

• 4 digits LCD display with a resolution of 0.1dB and 2 times/sec display update
• Removable windscreen and 1/2" electret condenser microphone
• Threaded insert for tripod mount
• Selectable min or max hold and data hold function
• Internal datalogging
• AC/DC outputs for level recorder
• Self calibration with internal oscillator
• Selectable fast/slow response time
• Powered by 9V battery (006P or 6F22 or 1604)

Kit Includes

• Sound level meter, Instruction manual, Battery, foam windshield, case, USB cable and software

Compact and easy to use

The ST-95 from Tenma is a 130dB, 8kHz sound level meter with Bluetooth, featuring a 3dB accuracy, 0.1dB resolution and a maximum operating temperature of 40°C.

Features

• 4 Digits LCD display
• Microphone 1/2 electret condenser microphone
• Frequency range: 31.5Hz - 8kHz
• Measuring range: LO: 35dB - 80dB Med: 50dB - 100dB Hi: 80dB - 130dB Auto: 35dB-130dB
• Frequency Weighting: A and C
• Bluetooth interface transferring files to portable devices
• Operating Temperature and Humidity: 0 °C~40°C, 10%RH~90%RH
• 0.5times/sec display update and auto range selection
• 9V battery power supply

Simple Tool for Checking Trench Re-instatement & Soil Strength

The Clegg Impact Soil Tester provides a means for measuring and controlling soil strength and consolidation levels during trench reinstatement. It is also used to confirm uniform compaction over wide areas of ground, identifying poorly compacted areas and ineffective rolling of materials.

The Tester consists of a 4.5 kg compaction hammer operating within a vertical guide tube. When the hammer is released from a fixed height, it falls through the tube and strikes the surface under test, decelerating at a rate determined by the stiffness of the material within the region of impact. A precision accelerometer mounted on the hammer generates an electrical charge which is fed by a cable to a hand-held digital readout unit. The fast microcontroller in the readout scans and filters the signal and registers the deceleration in units of Impact Value (IV). The Impact Value is an indication of soil strength and shows good correlation with results from CBR tests. Data from the Impact Soil Tester can therefore be used in a similar manner to results from CBR tests performed in the laboratory and in the field. The Tester is powered by a single 9V PP3 battery accessible in a pull-out drawer on the side of the readout unit.

The CIST/882 Readout Unit displays readings of Impact Value (IV) and also shows the number of times that the hammer has been dropped during each test operation.

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