acoustics monitoring Equipment in Northern Ireland

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Model CAL250 - Precision Acoustic Calibrator

by Larson Davis, a division of PCB Piezotronics

The Model CAL250 is a battery operated, temperature compensated precise Class 1 Sound Calibrator for use with 1 microphones for the performance measurement and calibration of Sound Level Meters and Dosimeters. Adaptors allow the calibrator to be used with 1/4,1/2 and3/8 microphones. The following specifications apply: - Calibration frequency = ...

Model CAL200 - Precision Acoustic Calibrator

by Larson Davis, a division of PCB Piezotronics

The Model CAL200 is a battery operated, temperature compensated precise Class 1 Sound Calibrator for use with microphones. Adaptors allow the calibrator to be used with 1/4 and 3/8' microphones. The following specifications apply: Calibration frequency = 1kHz. Output Sound Pressure Level is selectable from 94 or 114 dB re 20Pa ( 0.2dB).

Model CAL291 - Precision Acoustic Calibrator

by Larson Davis, a division of PCB Piezotronics

The Model CAL291 is a dual channel Sound Calibrator. It is designed for measuring the residual intensity of sound intensity measurement systems. The following specifications apply: - When used with external signal generators the CAL291 Calibrator shall produce matched dual channel outputs of: ٠Sinusoids; Pink/White BB Noise. ٠1/3 ...

Model CAL150 - Precision Acoustic Calibrator

by Larson Davis, a division of PCB Piezotronics

IEC 60942 Class 2 Handheld Sound Level Calibrator for ½” microphones at 1000 Hz Used for Sound Level Meters and Noise Dosimeters.

iDAS - Intelligent Distributed Acoustic Sensor

by Silixa Ltd

The iDAS measures the true acoustic field every 1m over up to 50km of sensing fibre. It does this by sending an optical signal into the fibre and looking at the naturally occurring reflections that are scattered back all along the glass. By analysing these reflections, and measuring the time between the laser pulse being launched and the signal ...

TunnelCraft - 4 - Air Flow Monitor (AFM)

by Codel International Ltd

The Air Flow Monitor (AFM) uses ultrasonic technology to measure air velocity. A single transmitter and an array of four receivers are contained in the measuring head. Air velocity and direction are calculated from measurements of the phase shifts from the ultrasonic signals at the receivers. The sensor is compact, contains no moving components, ...

TunnelCraft - III - Air Flow Monitor

by Codel International Ltd

The Air Flow Monitor (AFM) uses ultrasonic technology to measure air velocity. A single transmitter and an array of four receivers are contained in the measuring head. Air velocity and direction are calculated from measurements of the phase shifts from the ultrasonic signals at the receivers. The sensor is compact, contains no moving components, ...

Teledyne - H-ADCP - ChannelMaster - Acoustic Doppler Current Profiler

by Isodaq Technology

The ChannelMaster H-ADCP is a compact, flexible and affordable horizontal ADCP designed to measure continuous flow and velocity in rivers and estuaries. The 2-beam doppler principle device is deployed at one elevation in a channel cross-section with different frequency models available for accurate measurement in channels from 1 to 300 metres ...

LSE - NH3 - 1710 - Air Pollution Monitoring of Ammonia Analyser

by Enviro Technology Services plc

LSE Monitors has developed a robust and cost-effective analyser based on photo acoustics with a quantum cascade laser. The concentration of NH3 in sample air is continuously determined with a detection limit of 0.025 ppm and a time resolution of 2 seconds. Continuous ammonia measurements in ambient air Ammonia (NH3) plays an important role in ...

LSE - N2O - 4405 - Air Pollution Monitoring of Nitrous Oxide Analyser

by Enviro Technology Services plc

LSE Monitors has developed a robust and cost-effective analyser based on photo acoustics with a quantum cas-cade laser. The concentration of N2O in ambient air is continuously determined with a sensitivity of 0.005 ppm and a time resolution of 120 s. Although the concentration of N2O in the atmosphere is relatively high (330 ppbv), the day and ...

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