Protecting the hearing of workers who use headphones on a regular basis is important. Call centre workers and those using headsets may be at risk to loud noise directly in their ears.
The Microphone In Real Ear Dosimeter System has been designed for measuring the personal noise exposure levels for such workers. Using a simple system where the microphone sits comfortably in the ear the exact noise levels and dose levels of headset wearers can be measured accurately.
The single or dual channel dosimeter can measure one ear or both ears simultaneously where required and store data for later analysis. An optional audio recording function also allows for later playback to assess and identify noise.
The system can also be used by those wearing ear defenders to assess whether the headphones are working correctly. An additional single octave option also means direct comparison with hearing protection data.
The In Ear Dosimeter System measures noise directly in the ear canal which gives a more accurate assessment of personal noise exposure for people wearing headsets. Each microphone is also covered by a protective silica pipe for maximum comfort and hygiene. The in ear microphones are small enough to sit comfortably in the ear and not obstruct the wearer in any way during the normal course of their work.
Features:
System Includes:
Optional Extras Include:
The Microphone In Real Ear Dosimeter System has been designed for measuring the personal noise exposure levels for such workers. Using a simple system where the microphone sits comfortably in the ear the exact noise levels and dose levels of headset wearers can be measured accurately.
The single or dual channel dosimeter can measure one ear or both ears simultaneously where required and store data for later analysis. An optional audio recording function also allows for later playback to assess and identify noise.
The system can also be used by those wearing ear defenders to assess whether the headphones are working correctly. An additional single octave option also means direct comparison with hearing protection data.
The In Ear Dosimeter System measures noise directly in the ear canal which gives a more accurate assessment of personal noise exposure for people wearing headsets. Each microphone is also covered by a protective silica pipe for maximum comfort and hygiene. The in ear microphones are small enough to sit comfortably in the ear and not obstruct the wearer in any way during the normal course of their work.
Features:
- Measurements according to ISO11904 and ANSI S12.42-1995
- Individual real world test of hearing protection noise reduction ratio
- Automatic calibration
- Easy and comfortable positioning of microphones in the ear canal
- Dual channel option to measure both ears simultaneously
- Optional audio event recording
- Optional single octave measurements
System Includes:
- Single Channel Dosimeter
- MIRE Microphone with Integrated Preamplifier and Cable
- Spare MIRE probe fixing assembly
- Single level calibrator and calibration adaptor
- Software with Dose Calculation
- Carry Case to keep your kit together
- 2x 20mm Probes
- 2x 25mm Probes
- 45x 20mm Silica Protection Pipes
- 45x 25mm Silica Protection Pipes
Optional Extras Include:
- Upgrade to Dual Channel Dosimeter with regular 0.5" microphone or second MIRE Microphone
- Single Octave Measurement Module
- Audio Events Recording Module
Standards: ISO 11904, ANSI S12.42-1995
Acoustic Dosimeter Mode:
Lear,exp (Leq), Lear,FF, Lear,DF, Spl, Peak, SEL
Measurements simultaneous to the 1/1 octave analysis
Weighting Filters: A, C and Z
RMS Detector: Digital True RMS detector with Peak detection, resolution 0.1 dB
Time-constants: Slow, Fast, Impulse
Microphone:
SV 25S Class 2 Ceramic Microphone, including special ear canal probe for measurements based on Microphone In Real Ear (MIRE) technique
Microphone has built-in TEDS functionality for the automatic calibration
Adapter provides easy calibration with 1/2" acoustic calibrator
Measurement Range: 50 dBA RMS ÷ 118 dBA Peak
Frequency Range: 20 Hz ÷ 10 kHz, sampling rate 24 kHz
Dynamic Range: 90 dB
Data Logger: Time-history logging of RMS / Max / Min / Peak results to internal memory with time step down to 1 second, up to 24 measurement results logged simultaneously
Audio Recorder: Time-domain signal events recorder (option)
Dual Channel Mode:
Dual-channel measurement mode with second microphone SV 25S or SV 25D (option)
1/1 Octave Dual-channel 1/1 octave real-time analysis and spectra logging, 9 filters with centre
frequencies from 31.5 Hz to 8 kHz, Type 1, IEC 61260 (option)
Input: 2 x Lemo 2-pin
Display: LCD 128 x 64 pixels plus icons with backlight
Memory: Up to 64 MB non-volatile flash type
Interfaces:
USB 1.1 Client
Extended I/O - AC output (1 V Peak) / Digital Output (Alarm trigger) / Digital Input (Input trigger)
Power Supply:
Two AA batteries (alkaline) operation time > 20 h (3.0 V / 1.6 Ah)
Two rechargeable batteries (not included) operation time > 24 h (2.4 V / 2.6 Ah)
USB interface 150 mA HUB
Temperature: from -10°C to 50°C
Humidity: up to 90% RH, non-condensed
Dimensions: 95 x 83 x 33 mm (without microphones)
Weight: 260 grams with batteries (without microphones)
Acoustic Dosimeter Mode:
Lear,exp (Leq), Lear,FF, Lear,DF, Spl, Peak, SEL
Measurements simultaneous to the 1/1 octave analysis
Weighting Filters: A, C and Z
RMS Detector: Digital True RMS detector with Peak detection, resolution 0.1 dB
Time-constants: Slow, Fast, Impulse
Microphone:
SV 25S Class 2 Ceramic Microphone, including special ear canal probe for measurements based on Microphone In Real Ear (MIRE) technique
Microphone has built-in TEDS functionality for the automatic calibration
Adapter provides easy calibration with 1/2" acoustic calibrator
Measurement Range: 50 dBA RMS ÷ 118 dBA Peak
Frequency Range: 20 Hz ÷ 10 kHz, sampling rate 24 kHz
Dynamic Range: 90 dB
Data Logger: Time-history logging of RMS / Max / Min / Peak results to internal memory with time step down to 1 second, up to 24 measurement results logged simultaneously
Audio Recorder: Time-domain signal events recorder (option)
Dual Channel Mode:
Dual-channel measurement mode with second microphone SV 25S or SV 25D (option)
1/1 Octave Dual-channel 1/1 octave real-time analysis and spectra logging, 9 filters with centre
frequencies from 31.5 Hz to 8 kHz, Type 1, IEC 61260 (option)
Input: 2 x Lemo 2-pin
Display: LCD 128 x 64 pixels plus icons with backlight
Memory: Up to 64 MB non-volatile flash type
Interfaces:
USB 1.1 Client
Extended I/O - AC output (1 V Peak) / Digital Output (Alarm trigger) / Digital Input (Input trigger)
Power Supply:
Two AA batteries (alkaline) operation time > 20 h (3.0 V / 1.6 Ah)
Two rechargeable batteries (not included) operation time > 24 h (2.4 V / 2.6 Ah)
USB interface 150 mA HUB
Temperature: from -10°C to 50°C
Humidity: up to 90% RH, non-condensed
Dimensions: 95 x 83 x 33 mm (without microphones)
Weight: 260 grams with batteries (without microphones)
