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CR310 Integrating Sound Level Meter

CR310 Integrating Sound Level Meter
CR310 Integrating Sound Level Meter
CR310 Integrating Sound Level Meter CR310 Sound Level Meter Hand Held Sound Level Meter

Price List

CAD $1265.00
Integrating Sound Level Meter
In stock

CAD $1637.00
Noise Kit with Integrating Meter, Sound Level Calibrator and Case
In stock
CAD $619.00
Sound Level Calibrator
In stock

CAD $103.00
Kit Case for CR310 Meter and Calibrator
In stock

CAD $17.00
Windshield for CR310
Lead time 1 week

The delivery price is calculated during checkout based on your location and the goods ordered. Our basic delivery prices are:

Delivery within Canada: $53.00

Delivery Service: Five working days*

* For products that are in stock and the order received by midday.

Some products go through a final configuration and calibration before being shipped. If the calibration labs are busy this can add up to two days on to the delivery schedule but guarantees a fresh calibration.

CAD $1265.00
Integrating Sound Level Meter
In stock

CAD $1637.00
Noise Kit with Integrating Meter, Sound Level Calibrator and Case
In stock


  • Calibrated Class 2 Integrating Sound Level Meter
  • LAeq and LCpeak measurement
  • Fast and Slow response
  • A and C frequency weighting
  • AC and DC outputs
  • Calibration certificate included
  • 15 Year Warranty


  • Noise at work assessments
  • General noise surveys
  • Alarm installation and testing
  • Machinery noise checks


The CR310 is an Integrating Sound Level Meter. In addition to the usual Fast/Slow sound level measurements it provides the integrated, average sound level Leq. The measurement of "A" weighted Leq (or LAeq) along with "C" weighted Peak (or LCPeak) make it ideal for noise at work surveys in line with the EU regulations.


  • IEC 61672 Class 2
  • ANSI S1.4, ANSI S1.43, IEC 60651 and IEC 60804 to Type 2

It is essential that a sound level meter meets these standards if it is to be used for any important measurements. The CR310 meets the strict demands of the international standards and is provided with a Calibration Certificate at no extra cost, so you can make your noise measurements with confidence.

Noise Measurements

The CR310 measures the A or C weighted sound level and Leq, and the C weighted Peak. The sound level can be measured with either Fast or Slow time response.

For applications such as noise at work the average sound level (LAeq) is usually used as it is much better than trying to average by eye. This is also a requirement for many occupational noise regulations. For other non-integrating applications the Max Hold feature makes the measurement of the maximum sound level easier.


An AC output and optional DC output mean this meter can be connected to a level recorder, PC equipped with an A/D converter or integrated with another data logging system.

See Specifications tab for more details about the standards and noise measurement range.

Noise at Work

The European noise at work regulations and guidelines state that you should use a Class 2 Integrating Sound Level Meter to measure the LAeq ("A" weighted Leq) and the LCpeak ("C" weighted Peak) in order to assess worker noise exposure levels.

The CR310 meets these requirements and comes with a traceable calibration certificate.

Noise at Work - Our Recommendation

The noise at work regulations state that you should check a meter's function before making measurements, so you also need a Sound Level Calibrator. For this reason we recommend the CK310 Noise Measurement Kit as it includes everything that you need for a noise at work assessment.

Applications for the CR310 Sound Level Meter

The CR310 is a calibrated integrating sound level meter with no data logging and no additional software. As many applications require a single reading to be made, it is often easier to note it down manually than to connect to a computer and download it. For those applications the CR310 is ideal.

If your measurement regulations or guidelines state that you need a Class 2 Integrating Sound Level Meter, or they require the measurement of LAeq, LCeq or LCPeak then this meter meets those demands.

System Integration

Although not a data logging meter, the CR310 has an AC output and a DC output, making it ideal for connection to a data logging system via a suitable A/D converter.

Start Measuring

The CR310 sound level meter shows the current sound level as soon as it is switched on. To start measuring the average sound level, or Leq, press the run button.

sound level display
Sound Level Display

As the meter runs it shows the average sound level over the measurement period, the LAeqT, along with the current level every second, or LAeq1s.

You can also view parameters such as the LCPeak, minimum and maximum sound levels.


noise meter keypad

Calibration Check

The noise at work regulations require regular calibration checks using a Sound Level Calibrator, which is included in the CK310 Noise Measurement Kit. To check the meter's calibration you put the calibrator over the microphone, switch it on and press the Cal button. The meter makes any adjustments automatically.

CR310 Sound Meter Options

The CR310 sound level meter can be bought on its own, with a calibrator or as part of a Noise Measurement Kit (meter, calibrator, case). Please check your regulations to see whether you need a Calibrator, or contact us for advice before ordering.

Order Code CR310

  • CR310 Integrating Sound Level Meter
  • Windshield
  • Instrument Handbook
  • Batteries
  • Calibration Certificate

CK310 Noise Measurement Kit

Our noise measurement kits are designed to include all the parts needed, enclosed in a carrying case.

  • CR310 Integrating Sound Level Meter
  • Windshield
  • CR514 Class 2 Sound Level Calibrator
  • Handbooks
  • Batteries
  • Calibration Certificates for meter and calibrator

For more information about the calibrator, please visit the CR514 Sound Level Calibrator page.

CR310 Integrating Sound Level Meter Specifications

StandardsIEC 61672-1:2013 Class 2
ANSI S1.4, IEC 60804, IEC 60651 Type 2
Range30 dB (A) to 130 dB (A)
40 dB (C) to 130 dB (C)
Frequency weightingA and C
Time weightingFast (F) and Slow (S)
Display functionsSound level, maximum, minimum, C peak
MeasurementsLAeq, LCeq, LAF, LAS, LCF, LCS, LCpk
Noise floor< 25 dB (A)and 35 dB (C)
Resolution0.1 dB
Display flagsOverload, under-range
Auto cal. range±4.5dB
Reference point94dB (1kHz), 92.9dB (8kHz)
Settling time60s
DisplayBacklit 128×64 LCD, resolution 0.1 dB


Electrical inputs5V power in via mini USB
Power2 x AA/LR6 1.5V batteries
Or 5V DC via Mini USB
Battery life24 hours
Microphone1⁄2” pre-polarised electret condenser type HY:205
Operating temperature0°C to +40°C
Operating humidity25% to 90%
Atmospheric pressure65 kPa to 108kPa
Storage temperature-20°C to +60°C
Dimensions215 × 68 × 32 mm
Weight220 g (including battery)
Electrical outputsAC (Tip 3.5 mm jack) and DC (middle 3.5 mm jack)
DC outputvoltage 15mV/dB, range 450mV to 1950mV
AC outputRMS 2V
Tripod Mount1/4" Whitworth socket