Sound Level Archives - Obiat Electronics https://obiat.com.au/product-tag/sound-level/ keeping your industry up and running Wed, 10 Sep 2025 06:38:59 +0000 en-AU hourly 1 https://wordpress.org/?v=7.0 https://obiat.com.au/wp-content/uploads/2016/05/obiat_logo_2-100x100.jpg Sound Level Archives - Obiat Electronics https://obiat.com.au/product-tag/sound-level/ 32 32 Extech SL130G Sound Level Alert https://obiat.com.au/product/extech-sl130g-sound-level-alert/ https://obiat.com.au/product/extech-sl130g-sound-level-alert/#respond Sun, 24 Apr 2016 10:38:20 +0000 http://sitebuilds.net/rapidtech/?post_type=product&p=2997 Extech logo

The Extech SL130G can provide continuous monitoring of sound level. Ideal for industrial, hospital, auditoriums, schools and other areas where there is a need for being alerted when sound level reaches a user determined set point. The meter can be used in the monitoring mode only without the LED alert if required. A programmable On/Off time extends battery life to 30 days when programmed 8 hours per day.

PDF   EXTECH SL130 Users Manual

 

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]]> Extech SL130G Features:
  • Bright LED’s (red flashing or green) alert user when sound level is too high or too low – LEDs can be read from 30m
  • Continuous Monitoring of Sound Level
  • Ideal for industrial, hospital, auditoriums, schools, and other areas where there is a need for being alerted when sound level reaches a set point
  • Meets ANSI Type 2 and EN 60651 accuracy specs – compliant to OSHA
  • User settable high or low limit (30 to 130dB) indication with output to drive external relay module
  • Wall, desk, or tripod mount
  • Microphone rotates 180° for desired placement. Optional 5m microphone extension cable for remote monitoring
  • Complete with AC adaptor, microphone wind cover, wall, desk, or tripod mount (optional Tripod)

Extech SL130G Features Overview

Users can set the SL130G so the Red LEDs flash when the sound level is below the LO set point where people in the audience may not be able to hear. When the sound level is above the LO set point, the Green LEDs indicate the sound level is acceptable. You can reverse the Red and Green LEDs activation per user color preference.

Connectivity Options

Optional 5-meter microphone extension cable for remote monitoring.User settable high or low limit (30 to 130 dB) with output to drive an external relay module that can power a larger, remote indicating device such as a “Quiet” sign, or enable connection to an alarm system. Mount on a wall or tripod or set on a flat surface. Meets ANSI Type 2 and EN 60651 accuracy specs.

Extech SL130G Specifications:

General Specifications
Display: 4.6 x 3.125″ multifunction LCD
Frequency Bandwidth: 31.5Hz to 8kHz
Microphone: 0.5″ Electret Condenser Microphone (remoteable)
Measurement Ranges: 30 to 80dB, 60 to 110dB, 80 to 130dB
Frequency Weighting: ‘A’ and ‘C’ (Programmable)
Response Time: Fast (125ms)/Slow(1s) (Programmable)
Resolution: 0.1dB
Alarm Output: 3.5mm Mono Phone Plug, Maximum:3.4mA @ 5VDC
Minimum Output: Voltage: 2.5 VDC
Power: AC/DC Adaptor for full functions; 8 x AA batteries for monitoring function only without LED alert
CE/Warranty: CE Approved/ 1 year warranty
Dimensions: 22 x 18 x 3.2mm
Weight: 285g

 

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]]> https://obiat.com.au/product/extech-sl130g-sound-level-alert/feed/ 0 Extech 407732 Sound Level Meter https://obiat.com.au/product/extech-407732-sound-level-meter/ https://obiat.com.au/product/extech-407732-sound-level-meter/#respond Sun, 24 Apr 2016 09:56:33 +0000 http://sitebuilds.net/rapidtech/?post_type=product&p=2992 Extech logo

The Extech 407732 Low/High Type 2 Sound Level Meter with backlit LCD display takes sound level measurements with high accuracy that meets ANSI and IEC 651 Type 2 standards. The unit features high and low measuring ranges, along with data hold and max hold functions.

Features

  • High accuracy meets ANSI S1.4-1983 and IEC 651 Type 2 standards
  • High and Low measuring ranges
    • Low: 35 to 100dB
    • High: 65 to 130dB
  • Data Hold and Max Hold functions

PDF   Extech 407732 Users Manual

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]]> Sound Level Meters Description

Sound Level Meters measure sound pressure, vibration levels, and/or frequencies. They are often used in industrial, environmental, and aircraft noise pollution studies. Sound level meters are accurate and easy to use. They are designed to meet the measurement requirements of Safety Engineers, Health and Industrial safety offices, and quality control in various environments.

Sound Level Meter Applications

  • Workplace noise management. Devices can be used to determine hearing protection needs as well as to reduce employee distraction
  • Residential areas. The meters measure the noise of construction, power equipment, industrial noise, and more
  • Agency and government requirements. The meters measure noise to make sure it adheres to requirements such as city ordinances or the U.S. Occupational Safety and Health Administration standards

The Extech 407732 sound level meter is a high accuracy instrument that meets ANSI and IEC 651 Type 2 standards. The Extech 407732 sound level meter has high (65 to 130dB) and low (35 to 100dB) measuring ranges enabling its use in a variety of environments. Functions of the Extech 407732 sound level meter include data hold and max hold. The backlit display aids viewing in dimly lit areas. The Extech 407732 sound level meter ships complete with microphone wind screen and 9V battery.

Applications of the Extech 407732 Sound Level Meter include:

  • Enforcing community noise ordinances
  • Meeting government safety issues
  • Installing audio systems
  • Product noise certification and reduction

Extech 407732 Specifications:

Display Counts 2000 count LCD
Range Low: 35 to 100dB
High 65 to 130dB
Basic Accuracy ±1.5dB
Weighting (A & C) Yes
Response Time (Fast/Slow) Yes
Condenser Microphone 0.5″ (12.7mm)
Dimensions 210 x 55 x 32mm)
Weight 230g

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]]> https://obiat.com.au/product/extech-407732-sound-level-meter/feed/ 0 Extech HD600 Datalogging Sound Level Meter https://obiat.com.au/product/extech-hd600-datalogging-sound-level-meter/ https://obiat.com.au/product/extech-hd600-datalogging-sound-level-meter/#respond Sun, 24 Apr 2016 09:40:16 +0000 http://sitebuilds.net/rapidtech/?post_type=product&p=2989 Extech logo

The Extech HD600 Datalogging Sound Level Meter gives you the ability to record sound levels at rates of up to 10 readings per second when connected to a PC. Built-in datalogging capabilities on the Extech HD600 allow for storage of up to 20,000 records taken at speeds from 1/sec to 1/59 sec, and the sound meter's highly accurate sensor detects sounds between 30 dB and 130 dB with ±1.4 dB accuracy. Featuring a built-in stand and a durable double molded housing, Extech HD600 Datalogging Sound Level Meters are an excellent option for demanding applications.

 

 

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]]> Extech HD600 Datalogging Sound Level Meter

The Extech HD600 meets ANSI and IEC 61672-1 Type 2 standards. It has three measuring ranges from 30 to 130 dB with 1.4 dB accuracy. In addition to the LCD digital display, an analog bargraph provides easy viewing of fast changing sound levels. Unit features a rugged double-molded housing and built-in stand.

Additional Features

Users can select Frequency Weighting (‘A’ and ‘C’), Response Time (Fast and Slow), maximum/minimum Hold, Auto Power Off, and AC/DC analog outputs. The meter has a datalogging capability of up to 20,000 records with user-settable sampling rate from 1 to 59 seconds. Readings are displayed and recorded with real date and time stamp.

Extech HD600 Features:

  • Datalogging capability up to 20,000 records
  • Auto power off with disable capability
  • Three ranges from 30 to 130dB
  • Capture up to 10 readings/sec when connected to a PC
  • Records readings with real date and time stamp
  • Min/Max and Data Hold functions
  • Heavy Duty rugged double molded housing
  • USB port includes software
  • Includes Windows® compatible software, USB cable, wind cover, tripod, hard carrying case, AC adaptor, and 9V battery

Extech HD600 Sound Level Meter Specifications:

Sound Range 30 to 130dB
Sound Accuracy ±1.4dB
Frequency Range 31.5Hz to 8kHz
Dynamic Range 50dB
Frequency Weighting A and C
Response Time Fast (125ms) / Slow (1 Second)
Analog Outputs AC: 1Vrms Full Scale; Output Impedance: 100 OHms
DC: 10 mV/1dB; Output Impedance: 1 kOhms
Data Storage Capacity 20,000 Readings/Samples
Auto Power Off Approximately 15 Minutes of Inactivity with Disable
Power Supply (1) 9 Volt Battery or 12 Volt AC Adaptor
Battery Life 30 Hours
Microphone 1/2″ Electret Condenser
Display 4 Digit LCD with Bargraph and Backlighting
Display Update Rate 2 Times/Second
Range Indicators “Over” and “Under”
Operating Conditions Temperature: 0°C to 40°C

Humidity: 10% to 90% RH
Storage Conditions Temperature: -10°C to 60°C
Humidity: 10% to 75% RH
Compliance Standards IEC61672-1:2002 Class 2
IEC 60651: 1979 Type 2
ANSI S1.4:1983 Type 2
CE
Weight 350g
Dimensions 278mm x 76mm x 50mm

 

 

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]]> https://obiat.com.au/product/extech-hd600-datalogging-sound-level-meter/feed/ 0 Extech 407780A Integrating Sound Level Meter https://obiat.com.au/product/extech-407780a-integrating-sound-level-meter/ https://obiat.com.au/product/extech-407780a-integrating-sound-level-meter/#respond Sun, 24 Apr 2016 09:18:55 +0000 http://sitebuilds.net/rapidtech/?post_type=product&p=2985 Extech logo

The Extech 407780A Sound Level Meter complies with the requirements of IEC 61672‐1:2003 standard for a Class 2 instrument.

Leq and SEL measurements with built-in datalogger and PC interface. Datalogs up to 32,000 readings using included software and USB cable.

Applications:

  • Perform Leq and SEL measurements
  • OSHA compliance Testing
  • Noise Ordinance
  • Machine Noise Evaluation
  • Data Storage for pertinent records

PDF   Extech 407780A User Manual

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]]> Extech 407780A Features:
  • 4-digit multifunction LCD with analogue bargraph
  • Precise linearity over wide range (100dB)
  • Display modes: SPL, SPL MIN/MAX, SEL, and Leq
  • Programmable integrating time
  • A and C Frequency weighting
  • Impulse/Fast/Slow response settings
  • Datalogging function records up to 32,000 records
  • Real time calendar/clock
  • Analog and alarm output features can be used to connect with Frequency analyzers, chart recorders, external dataloggers, and sound level alarms
  • Built-in USB interface with included Windows® datalogging software
  • Tripod mount
  • Meets IEC 61672-1, 60651/60804 Type 2 and ANSI S1.4 Type 2 specifi cations
  • Complete with windscreen, adjustment screwdriver, USB cable, Windows® compatible software, battery, and case

Extech 407780A USB Sound Level Specifications

Microphone 0.5″ (12.7mm) Electret Condenser Microphone
Measurement Range 30 to 130dB
Frequency Range 31.5 to 8kHz
Sampling Time Updated every 0.5s
Accuracy ±1.5dB (ref 94dB@1KHz)
Resolution 0.1dB
Measurement Parameters SPL, SPL MIN/MAX, SEL, and Leq
Frequency Weighting A and C
Response Impulse, Fast and Slow
Data Storage Capacity 32,000 Samples
Battery (4) 1.5 Volt AA Batteries
Battery Life Approximately 24 Hours
PC Interface USB
Software Windows XP and Vista 32-Bit Compatible
Standards Compliance IEC: 61672-1, 60651 and 60804 Type 2
ANSI: S1.4 Type 2
Dimensions 265mm x 72mm x 21mm
Weight 310 grams

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]]> https://obiat.com.au/product/extech-407780a-integrating-sound-level-meter/feed/ 0 Tenmars TM-100 Sound Level Meter Calibrator https://obiat.com.au/product/tenmars-tm-100-sound-level-meter-calibrator/ https://obiat.com.au/product/tenmars-tm-100-sound-level-meter-calibrator/#respond Mon, 15 Feb 2016 01:12:11 +0000 http://sitebuilds.net/rapidtech/product/tenmars-tm-100-sound-level-meter-calibrator/ Tenmars_logo_05

Tenmars TM-100 Sound Level Meter Calibrator

  • Class 2 Dual Level Calibrator
  • Setting standard sound level at 94dB and 114dB
  • 1/2 inch microphone adapters provided

Authorised Australian Distributor.

WARRANTY 3

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]]> Tenmars TM-100 Features:
  • According Standard ANSI S1 4-1984 and IEC 942 1988 Class 2
  • Low battery indicator
Specifications
Output Frequency 1000Hz ±4%
Accuracy ±0.5dB
Environmental Temperature 20°C
Relative Humidity 65%
Atmospheric Pressure 1013mbar
General Specifications
Dimensions 125mm (L) x 48mm (Dia)
Weight approx. 285g (including batteries)
Ordering Information
Model Name Description
Tenmars TM-100 Sound Level Calibrator
Included accessories: Battery, and Owner’s manual

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]]> https://obiat.com.au/product/tenmars-tm-100-sound-level-meter-calibrator/feed/ 0 Tenmars ST-120 Class 1 Sound Level Meter Calibrator https://obiat.com.au/product/tenmars-st-120-class-1-sound-level-meter-calibrator/ https://obiat.com.au/product/tenmars-st-120-class-1-sound-level-meter-calibrator/#respond Mon, 15 Feb 2016 01:12:11 +0000 http://sitebuilds.net/rapidtech/product/tenmars-st-120-class-1-sound-level-meter-calibrator/ Tenmars_logo_05

Tenmars ST-120 Sound Level Meter Calibrator

Product Description.

  • For 1/2-inch condenser microphone calibration
  • IEC 60942:2003 Class1/ANSI S1.40-1984.
  • Output sound level: at 94dB and 114dB.
  • Frequency: 1000Hz ±1% Class1 A, C, Z;
    250Hz ±1% (Z).
  • Sound pressure levels: at 94dB and 114dB.
  • Harmonic wave distortion ±3%.
  • Output feedback detection.
  • Low battery indication

Authorised Australian Distributor

WARRANTY 3

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]]> Tenmars ST-120 Class 1 Sound Level Meter Calibrator
Specifications
Output Frequency 1000Hz ±1% (Class1.) A, C, Z
Accuracy 94dB ±3dB; 114dB ±0.5dB
Environmental Temperature 20°C
Relative Humidity 85%
Atmospheric Pressure 850mbar to 1050mbar
General Specifications
Power Supply 9 Volt battery 006P, IEC 6F22, NEDA 1604
Dimensions 125mm (L) x 48mm (Dia)
Weight approx. 285g (including batteries)
Ordering Information
Model Name Description
Tenmars ST-120 Class1 Sound Level Calibrator
Included accessories: Battery, and Owner’s manual

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]]> https://obiat.com.au/product/tenmars-st-120-class-1-sound-level-meter-calibrator/feed/ 0 Tenmars ST-106 Class 1 Integrating Sound Level Meter https://obiat.com.au/product/tenmars-st-106-class-1-integrating-sound-meter/ https://obiat.com.au/product/tenmars-st-106-class-1-integrating-sound-meter/#respond Mon, 15 Feb 2016 01:12:10 +0000 http://sitebuilds.net/rapidtech/product/tenmars-st-106-class-1-integrating-sound-meter/ Tenmars_logo_05

Tenmars ST-106 Features:

  • Measuring Functions: Lxyp, (Lxyi), Lxeq, 1s, Lxeq, T, LAE, E, Cpeak+, Cpeak-, Lafmax, LAFmin, LAFeqT, LASeqT, LAleqT, Laeq (20Hz to 200Hz).
  • Simultaneously measures A, C, Z, and F, S, Impulse.
  • Fast, Slow, Impulse, PeakC+, PeakC- response time.
  • Sampling Frequency 20.8µs (48kHz).
  • Wide frequency range: 10Hz to 20kHz.
  • Wide measurement range: 25dB to 140dB.
  • Wide dynamic range: 90dB.
  • A, C, D, frequency weighting.
  • USB interface, data recordings:128 records.

Authorised Australian distributor

WARRANTY 3

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]]> Tenmars ST-106 Sound Level Meter Specifications Model ST-106 Display LCD with Green Yellow Backlight (240 x 160 dots) Real time clock, Year, Month, Minute Display refresh rate 1 Hz for value; 10Hz for graph Standards IEC 61672 : 2002 Class 1 IEC 60651 : 1979 TYPE 1 IEC 606804 : 2000 TYPE 1 Microphone 1/2 pre-polarized condenser microphone build in preamplifier : 40mV/Pa, frequency range : 10Hz~16KHz, heat noise : 20dB(A) Measurement Items Lxyi, Lxyp, Lxeq, Lxmax, Lxmin, LAE, Lcpeak, Lzpeak, remark: X is A,C,Z and Y is F,S,I Measurement Range 30dB~130dB(A) 35dB~130dB(C) 40dB~130dB(Z) Integrate time setup Ramdomly, 10s, 1m, 5m, 10m, 20m, 30m, 1h, 2h, 4h, 8h Time Weighting Fast, Slow, Impulse, Peak Frequency Range 10Hz ~ 16KHz Frequency Weighting A/C/Z Sampling Frequency 20.8us (48KHz) Analog Output AC 20mV/dB Starting Time <10 Seconds Power Requirement LR6 : 4 Alkaline batteries (8 hours) AC Adapter Imput: 100V~240V, Output: 6V DCV Size 285 (L) x 90(W) x 39(H) mm Weight 500g (including Batteries

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]]> https://obiat.com.au/product/tenmars-st-106-class-1-integrating-sound-meter/feed/ 0 Tenmars ST-107 Integrating Sound Meter https://obiat.com.au/product/tenmars-st-107-integrating-sound-meter/ https://obiat.com.au/product/tenmars-st-107-integrating-sound-meter/#respond Mon, 15 Feb 2016 01:12:10 +0000 http://sitebuilds.net/rapidtech/product/tenmars-st-107-integrating-sound-meter/ Tenmars_logo_05

Product Description

  • Fast, Slow, Impulse response time.
  • Wide frequency range: 31.5Hz to 8kHz.
  • Wide measurement range: 30dB to 130dB.
  • Wide dynamic range: 100dB.
  • A, C, Z, frequency weighting.
  • Storage up to 32,000 records.
  • USB interface.
  • AC and DC output.
  • Includes Bargraph display.

Application

  • Evaluation of environmental noise.
  • Measurements of noise at workplaces.
  • Assessment of product noise.

Authorised Australian distributor

WARRANTY 3

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]]>
Specifications
Display 3-1/2 digit backlit LCD display. Maximum reading 1999
Display Refresh Rate 2.5 times per second
Applicable Specifications IEC 61672-1:2002 Class 2
Microphone 1/2-inch pre-polarized condenser microphone
Measurement Items SPL, Leq, SEL
30dB to 130dB (A)
35dB to 130dB (C)
40dB to 130dB (Z)
Dynamic Range 100dB
Integrate Time Setup randomly, 10s, 1m, 5m, 10m, 30m, 1hr, 2hr, 4hr, 8hr, 16hr, and 24 hours
Time Weighting Fast, Slow, Impulse, Peak
Frequency Weighting A, C, and Z
Frequency Range 31.5Hz to 8kHz
General Specifications
Power Supply Four Alkaline type ‘AA’ 1.5 volt batteries
AC Adapter 100V AC to 240V AC 50/60Hz
Dimensions 285mm (L) x 90mm (W) x 39mm (D)
Weight approx. 550g (including batteries)
Ordering Information
Model Name Description
Tenmars ST-107 Sound Level Meter
Included accessories: Battery, AC adapter, and Owner’s manual

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]]> https://obiat.com.au/product/tenmars-st-107-integrating-sound-meter/feed/ 0 Tenmars ST-107S Class 2 Integrating Sound Meter https://obiat.com.au/product/tenmars-st-107s-class-2-integrating-sound-meter/ https://obiat.com.au/product/tenmars-st-107s-class-2-integrating-sound-meter/#respond Mon, 15 Feb 2016 01:12:10 +0000 http://sitebuilds.net/rapidtech/product/tenmars-st-107s-class-2-integrating-sound-meter/ Tenmars_logo_05

Complies with IEC 61672: 2002 Class II
This is a high performance class II integrating Sound Level Meter.

Features/Benefits

  • Measures Lxyi, Lxyp, Lxeq, Lxmax, Lxmin, LAE, SPL, Sel, Lcpeak, functions.
  • Fast, Slow, Impulse response time.
  • Wide frequency range: 31.5Hz to 8kHz.
  • Wide measurement range: 30dB to 130dB.
  • Wide dynamic range: 100dB.
  • A, C, Z, frequency weighting.
  • Data stored up to 32000 records, with automatic transfer to micro SD card.
  • USB interface.
  • AC and DC output.
  • Includes Bargraph display.
  • Warranty: 2-years

Application

  • Evaluation of environmental noise.
  • Measurements of noise at workplaces.
  • Assessment of product noise.

Authorised Australian distributor

WARRANTY 3

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]]>
Specifications
Display 3-1/2 digit backlit LCD display. Maximum reading 2000
Display Refresh Rate 1 time per second
Applicable Specifications IEC 61672-1:2002 Class 1. ANSI S1.4 Type 1. CNS No. 7129 Type 1. JJG 188-2002 Class 1
Microphone 1/2-inch pre-polarized condenser microphone built in preamplifier:
-32dB ±2dB (250Hz 0dB = 1V/Pa)
Frequency range: 25Hz to 12.5kHz, heat noise
Measurement Items 30dB to 130dB (A)
35dB to 130dB (C)
40dB to 130dB (Z)
Measurement Range randomly, 10s, 1m, 5m, 10m, 30m, 1hr, 2hr, 4hr, 8hr, 16hr, and 24 hours
Dynamic Range 100dB
Integrate Time Setup randomly, 10s, 1m, 5m, 10m, 30m, 1hr, 2hr, 4hr, 8hr, 16hr, and 24 hours
Maximum peak C Sound Level Measurement 70dB to 133dB
Time Weighting Fast, Slow, Impulse, Peak
Frequency Weighting A, C, and Z
Frequency Range 20Hz to 8kHz
DC Output 10mV/dB
AC Output 2Vrms/130dB
General Specifications
Power Supply Four Alkaline type ‘AA’ 1.5 volt batteries
Battery Life 33 hours
AC Adapter 100V AC to 240V AC 50/60Hz
Dimensions 285mm (L) x 90mm (W) x 39mm (D)
Weight approx. 550g (including batteries)
Ordering Information
Model Name Description
Tenmars ST-107S Class II Integrating Sound Level Meter
Included accessories: Battery, AC adapter, and Owner’s manual

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]]> https://obiat.com.au/product/tenmars-st-107s-class-2-integrating-sound-meter/feed/ 0 Tenmars TM-101 Sound Level Meter https://obiat.com.au/product/tenmars-tm-101-sound-level-meter/ https://obiat.com.au/product/tenmars-tm-101-sound-level-meter/#respond Mon, 15 Feb 2016 01:12:10 +0000 http://sitebuilds.net/rapidtech/product/tenmars-tm-101-sound-level-meter/ Tenmars_logo_05

Tenmars TM-101 Sound Level Meter

Features

  • Conforms to IEC 61672 Type II
  • 3-1/2 digit LCD display with maximum reading of 2000.
  • Test Ranges: 30dB to 130dB, LO 30dB to 80dB, MED 50dB to 100dB, and
    HI 80dB to 130dB.
  • Accuracy: ±1.5dB (ref 94dB) at 1kHz.
  • Resolution: 0.1dB.
  • Microphone: 1/2 Electret condenser microphone.
  • Frequency Weighting: A and C.
  • Time Weighting: FAST, SLOW.
  • Autoranging, Auto Power Off, Data Hold, and Min/Max functions.
  • Dynamic Range: 50dB.
  • Frequency Range: 31.5Hz to 8kHz.
  • AC/DC output signal for use with data-loggers.

Authorised Australian distributor

WARRANTY 3

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]]> Tenmars TM-101 Sound Level Meter
Specifications
Display 3-1/2 digit LCD display
Test Range 30dB to 130dB
30db to 80dB (LO)
50dB to 100dB (MED)
80dB to 130dB (HI)
Accuracy ±1.5dB (ref 94dB at 1kHz)
Resolution 0.1dB
Microphone 1/2-inch Electret condenser microphone
Frequency Weighting A, and C
Time Weighting Fast, and Slow
Dynamic Range 50dB
Frequency Range 31.5Hz to 8000Hz
General Specifications
Dimensions 280mm (L) x 80mm (W) x 32mm (D)
Weight approx. 500g (including batteries)
Ordering Information
Model Name Description
Tenmars TM-101 Sound Level Meter
Included accessories: Battery, and Owner’s manual

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]]> https://obiat.com.au/product/tenmars-tm-101-sound-level-meter/feed/ 0