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Related Manuals for Pambry Listen Ear
Summary of Contents for Pambry Listen Ear
- Page 1 Listen Ear™ Personal Noise Dose Meter User Manual...
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Page 2: Safety Information
SOFTWARE REVISION The User Manual supplied with the Listen Ear™ reflects the firmware installed at the time of manufacture. Updating the firmware may add or change product features. SAFETY INFORMATION For safe practice only operate in accordance with the instructions in this manual. -
Page 3: Table Of Contents
5.0 MENU Pages Settings Info 6.0 CALIBRATION Calibration procedure 7.0 ATTACHING YOUR Listen Ear™ Mounting Listen Ear™ with external microphone 8.0 SPECIAL FEATURES Anti-Knock & Vibration System Motion Detection System Auto Power OFF 9.0 MEASUREMENTS Use as a Sound Level Meter Use as a Noise Dosimeter 10.0 FIRMWARE UPDATE... -
Page 4: Introduction
1.0 INTRODUCTION Welcome to your new purchase of your Listen Ear™ Noise Dose Meter and thank you for choosing Pambry Electronics Ltd, a dedicated UK manufacturer of audio products sold worldwide. This professionally made and calibrated instrument is by far the best value for money device of its type in the world. -
Page 5: Description
External Microphone Connected 00:00:00 Noise dose record duration - HH:MM:SS Acoustic Overload recorded. Recorded dose may not be accurate Supplied with your Listen Ear™ Optional Accessories • Quick Start Guide • Sound Calibration Unit (SCU) • User Manual • External Microphone •... -
Page 6: Charging Before Use
The ‘Info LED’ blinks RED once every 3 seconds when the battery level is below 10%. 3.2 Connecting to a PC The method of accessing the stored files in your Listen Ear™ is by using your computer’s file explorer application, where the stored files can be downloaded and manipulated as required. -
Page 7: Pages
If needed, Listen Ear™ can be manually ”rebooted” by holding the “Scroll/Power” button for 8 seconds. Current recording will be aborted and settings will be set to factory defaults. Report and History files will not be affected. 4.0 PAGES There are 5 ‘pages’ so called because each represents a specific measurement or function. -
Page 8: Menu
At least one page must be enabled. Only parameters from enabled pages are recorded in the report and history files (if enabled). 5.2 Menu / Settings Your Listen Ear™ has a number of adjustable settings which can be modified, enabled & disabled if desired. - Page 9 SNR (see page 18) attenuation figure from the specification of your hearing defender or ear plug into the SETUP page screen. The Listen Ear™ will take note of the new setting and give display readings as if measuring at your ear inside the Hearing Defender earmuff and not outside in the external environment.
- Page 10 Menu / Settings / Bluetooth Enable / disable Bluetooth functionality. For more details please refer to Listen Ear™ APP user guide. Menu / Settings / Reports In addition to the ‘easy to understand’ Noise Dose presented as a single number, Listen Ear™...
- Page 11 It is not recommended to alter the Meter Settings if you are unfamiliar with the use and understanding of noise measurements. See chapter 11.0 Theory behind the Listen Ear™ Choose between Fast & Slow Time weighting. Choose between A, C & Z Frequency Weightings...
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Page 12: Info
SCROLL down to Defaults and press ENTER. Confirm in the next step. Report and history files will not be affected. 5.3 Menu / Info Information about your Listen Ear™ can be found in the Info Page. • Listen Ear Model & Serial Number • Firmware Version •... -
Page 13: Attaching Your Listen Ear
Ensure Listen Ear™ is situated on a stable flat surface throughout the calibration process. Place Sound Calibration Unit (SCU) provided over the internal or external microphone. 1. Switch ON SCU. A continuous SPL of 94dB @ 1KHz shall be applied to the Internal/External microphone. -
Page 14: Special Features
‘no motion’ time is recorded in the report file. 8.3 Auto Power OFF To save the battery life, the Listen Ear™ will switch itself OFF after 1 hour if no motion is detected and no record is taking place. -
Page 15: Use As A Noise Dosimeter
Noise Dosimeter. 9.2 Use as a Noise Dosimeter Scroll your Listen Ear™ to the screen labelled ‘Dose’. The percentage value gives you the amount of Noise Dosage you have used up over your working 8hr day. The Projected Noise Dose represent calculated dose at the end of the 8h shift, assuming that the noise level will stay at the current level. -
Page 16: Firmware Update
To update the firmware, you need a USB connection from your computer to your Listen Ear™. You must also have a copy of the firmware file, obtained from Pambry Electronics website or Customer Service. - Page 17 Once you reach 100% you should remove yourself from the noisy environment and recover for 24 hours. This is what Listen Ear™ does - it tells you when you have received enough noise on a daily (8hr) basis and will help to save your hearing.
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Page 18: Ear Protection
11.2 Ear Protection Ear defenders or ear muffs are PPE (personal protective equipment) designed to protect the wearer from extreme noises. The head-band and outer covering is usually made from a hard thermoplastic or metal. The protection usually comes from acoustic foam - this absorbs sound waves by increasing air resistance, thus reducing the amplitude of the waves. -
Page 19: F & S Time Weightings
Figure 1 - Frequency Weighting Curves 11.4 Fast & Slow Time Weighting Time weightings are used to represent the behaviour of sound pressure levels. When sound level meters were first developed, analogue meters were used. The needle would move corresponding to the sound pressure level. -
Page 20: Report And History Files
12.0 REPORT AND HISTORY FILES The report and history files are stored in the memory only ‘report’ function is enabled in Menu/Setting/Reports (see page 11). Both file names are numbered i.e. for the report rep_0004.txt hst_0004.csv number 4. Files are stored in folder /Reports and /History respectively. 12.1 Report file example Daily Noise Dose Report #0004 ________________________________ Dose recorded... - Page 21 12.2 History file example (2 minutes part only) Start date, Duration, Interv. (s), Records 03/07/17, 08:00:00, 10, 2880 T(h:m:s), Las(dB), Dose(%), No motion, Temp(‘C), Hum(%RH) 09:26:12, 0.0, 21.2, 63.4 09:26:22, 0.0, 21.2, 63.4 09:26:32, 42.7, 0.0, 21.2, 63.9 09:26:42, 0.0, 21.2, 63.9 09:26:52,...
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Page 22: Specification
13.0 SPECIFICATION Certificates and standards IEC 61672: 1993 Class 2 Sound Level Meter IEC 61252: 1993 Personal Sound Exposure Meter Mark Complies with the Directive on low voltage 73/23/CEE and Directive CEM 89/336/CEE modified by 93/68/CEE. Sound measurement 40dB to 140dB LCPK 140dB Over Load detector flag... - Page 23 Data logging Summary results for the measurement time File type reports: *.txt, history: *.csv Time history at intervals 10s, 30s, 1m, 5m, 10m Temperature and humidity Motion status number of events, summary time User interface Display LCD, 128x128, backlighted Keypad two multifunction buttons Other multicolour ‘info LED’...
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Page 24: Appendix A - Ec Declaration Of Conformity
APPENDIX A – EC DECLARATION OF CONFORMITY Pambry Electronics Ltd Pambry House, Units 7 & 8 Ventura Centre, Ventura Place, Upton Industrial Estate, Upton, Poole, Dorset BH16 5SW UK Tel: 01202 624910 Email: sales@pambry.co.uk www.pambry.co.uk...
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