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Sound Level Meters

Low Cost Noise Meter

Low cost noise meter for aural health and safety measuring

This low cost noise meter has been designed for simple noise surveys and sound level checks. Despite its full range of features, it is very easy to use and the large backlit display helps when measuring in poor light conditions.

  • Large, clear display with back-light
  • 30 to 130 dB(A) Auto Ranging
  • A and C frequency weighting
  • Fast and Slow time weighting
  • Maximum and Minimum sound level readings
  • Hold button holds the currently displayed level
  • Includes Wind Shield, Carrying Case and Battery

The Optimus range of sound level meters uses the latest display technology and digital signal processing (DSP) techniques to provide you with a very powerful yet easy to use meter. The ease of use comes from the fact that all parameters are automatically measured at the same time, so no need to think about what you need in the split second before starting the measurement.


Specifications

noise meter with carrying case and wind shield

Display
Indicators
Resolution / Accuracy
Frequency Range
Level Range
Frequency Weighting
Microphone
Time Weighting
Dynamic Range
Battery
Battery Life
Temp. & Humidity
Dimensions

4 Digit LCD with back light, update rate 0.5s
Low battery, freq. & time weighting, min/max
0.1dB / ±1.5 dB (ref 94 dB @ 1 kHz)
31.5 Hz to 8 kHz
30 to 130 dB(A), 35 to 130 dB(C)
A and C
1/2" electret condenser
Fast (125ms) and Slow (1s)
50 dB
One 9V battery (supplied)
About 50 hours (alkaline battery)
5°C to 40°C, below 80% RH
200 x 55 x 38, 170g (including battery)

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Due to its auto-ranging feature and simple push-button operation, this noise meter is extremely easy to use. Just switch it on and it is measuring with the most common settings: "A" frequency weighting and "Fast" time response. At the push of a button you can change it to display the "C" weighted sound level or change to "Slow" time response. The large display with back light make this meter ideal for measuring noise levels where the natural light is poor.

Using the NM102 Noise Meter

The NM102 Noise Meter has been designed to be quick and easy to use. The auto-range feature means that you do not have to select the measurement range before making measurements, which is a problem with most sound level meters. With this meter you just switch on and it starts measuring the "A" weighted, Fast Sound Level, which is ideal for most applications.

Low cost noise meter display image
Picture of the lost cost noise meter

The "A" weighted, Fast Sound Level is the parameter that is used for most applications. When you need something different the meter has the following buttons:

measure sound in the workplace with a low cost noise meter Switches between "A" weighting and "C" weighting.
Low cost noise meter button information Switches between "Fast" time weighting and "Slow" time weighting.
Low cost noise meter for health and safety sound testing Holds the sound level that is currently shown on the meter - freezes the display.
Low cost noise meter for audio testing Shows the maximum and minimum sound levels that have been measured.
These levels are reset by holding the Max/Min button down for 1 second.
Download the low cost noise meter data specification for office health and saftey noise measurement testing

Download the Low Cost Noisemeter
Datasheet (PDF, 822k)

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Contact Midas

Midas Safety Services are happy to discuss your Sound and Noise Level Testing requirements and arrange a no-obligation meeting if that would be helpful.

Please contact us on 01454-632967 or email chrisgray@midaselectronics.co.uk.

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Products

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Optimus Red

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Optimus Green

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Low cost noise meter

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