Cirrus research CR:199A Trojan2 Noise Nuisance Recorder (20dB to 140dB; IEC 61672:2013 Class 1)

Handheld data logging sound level meter to IEC 61672:2013 Class 1

Acoustic calibrator 

94dB acoustic calibrator to IEC 60942:2003 Class 1.

External housing 

Robust Peli™ Case with anti-tamper security tags. Supplied in rucksack for discreet deployment.

External power 

100V to 240V AC mains adaptor. 

12V 1.25A DC converter. 

Automatic restart after power failure. Fixed power cable.

Internal power: 4 x AA cells to provide 8-hour operation in case of power failure.

Memory 

8GB as standard. 

Optional expansion to 32GB. 

Default 77 days 5 hours’ worth of measurement data and 17 hours 15 

minutes’ worth of audio data. This can be changed using the partition editor in NoiseTools software.

AuditStore™: Non-volatile measurement verification store for peace of mind.

Resident controls 

Wireless 2-button remote control (start/stop). 

2 included with lanyards. (1 with TrojanLITE) 

Optional wired remote. Programmable length pre and post-triggers for audio recording. 

Default auto-stop of audio recording after 5 minutes. Can be customised from 2 minutes up to 4 hours.

Resident display 

Power LED (green on mains / orange on battery). 

Remote control status LED (blue). 

Audio recording status LED (red).

Weight: 2.6kg (including sound level meter)

Dimensions: 296mm x 212mm x 96mm

Microphone: 

1.5m extension cable.

Mini ‘tabletop’ tripod to mount microphone and preamp.

Windshield for microphone protection.

Measurements

LAeq, LCeq, LZeq, LCPeak, LAPeak, LAIeq & LXYMax.

Time history of all parameters.

Time history rates: 10ms, 62.5ms, 125ms, 250ms, 500ms, 1s, 2s.

Statistical analysis: LNs – L90/L10

Measurement range: 20dB to 140dB RMS in a single range.

Noise floor: < 18dB(A) for Class 1.

Frequency weightings: A, C & Z simultaneously

Operating temperature: -10°C to +50°C

Storage temperature: 20°C to +60°C

Humidity: 95%RH non-condensing

VoiceTag: Up to 30 seconds of audio notes with each measurement.

Audio recording 

Based on 1s time history without timers: 

Standard quality – 32 hours 45 minutes. 16bit/16kHz.

High quality – 7 hours 15 minutes. 24bit/48kHz.

Studio quality – 2 hours 30 minutes. 32bit/96kHz.

Software 

NoiseTools and NoiseAid (web-based application).