' ASYS dBELL 100 Particle and Noise Monitoring System - National Photonic Ltd.

ASYS dBELL 100 Particle and Noise Monitoring System

The ASYS Noise and Particle measurement system for noise and fume contamination monitoring.

Compliance made easy! with the ASYS Noise and Particle measurement system for industrial environments.

Excessive noise and airborne contaminants present a significant safety risk to your workers. A system of monitoring and reporting worker exposure is crucial to maintaining the health of your employees and achieving regulatory compliance.  The ASYS Noise and Particle measurement system delivers automated reporting of critical noise and air quality metrics together with compliance status.

The base unit contains integral noise and air particles sensors for general workspace monitoring in addition to communicating with personal noise dosimeters.  The system provides full data management and connectivity to the ASYS cloud server which automatically generates periodic reports summarising the status of the working environment in a simple easy to read format.  Reports are perfect for your health and safety records as well as presentation to regulatory bodies such as health and safety assessors and inspectors.

The ASYS Noise and Particle measurement system is a complete turnkey solution for.

  • Improved operator safety
  • Compliance to standards
  • Evaluation of shop noise and air contaminant mitigation strategies
Complies with EN 61672-1 and the requirements of HSE L108

Specifications – ASYS dBELL 100

Noise Standards

IEC 61672 Class2

ANSI S1.4 Type 2

Noise sensor

Linear Operating Range 30-130dB(A)

Peak Range 40-130dB(C)

Range Deviation +/- 0.5 dB

Freq Weighting A,C

Time Weighting F (125ms),  S (1000ms)

Particle sensor

Sensitivity 0.3µm

Range 40 µm

Flow rate 5 LPM

Calibration NIST Traceable


Case material Stainless Steel/ABS

IP Rating IP65

Display 7 inch

Dimensions 170x140x75mm

Weight 2.6kg

Mounting options Wall/DIN rail

Network Communications

WiFi 802.11 b/g/n/

Remote devices LoRa™


Temperature Storage -20 to 60C

Operating -10 to 50 C

Humidity 0 to 95% non-condensing



Measurements – ASYS dBELL 100

Displayed Noise Metrics

LAF A-weighted sound level (dBA)

LAeq A-weighted equivalent continuous sound level

LCPeak C-weighted, peak sound level

Displayed Particle Measurements

Particle Mass Concentration

PM 2.5

PM 2.5 TWA,8h

PM 2.5 Peak

National Photonic Ltd.