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CR308 Low-Cost Decibel Meter
Sound Level MetersThe CR:308 low-cost decibel meter is ideal for providing simple noise measurement information as part of noise level testing applications
- Simple to use Class 2 meter (meets IEC 61672-1:2013 Class 2)
- Measure Sound Pressure Level (SPL) and Maximum Sound Level (LMax)
- A and C frequency weighting
- Quick and easy hassle-free sound checks
Description
The Cirrus Research Low-Cost Decibel Meter
The CR:308 is a basic sound level meter that is perfect when all you need is access to simple noise measurement information. The meter is capable of measuring the maximum sound level (LMax) and the sound pressure level (SPL), and is ideal for simple applications, such as alarm testing, spot checks, and other noise level testing applications.
The CR:308 includes an adjustable noise level threshold alarm so you can be alerted when noise exceeds a set level.
The Cirrus Research CR:308 low-cost decibel meter is suitable for noise measurement across multiple sectors and meets current international standards for noise measurement instrumentation including IEC 61672-1:2013 Class 2.
Need an integrating sound level meter?
Try the CR:310 integrating decibel level meter suitable for basic workplace noise assessments.
Applicable Standards:
IEC 61672-1:2013 Class 2
Measurement Range:
30dB (A) to 130dB (A)
40dB (C) to 130dB (C)
Frequency Weightings:
A and C
Time Weightings:
Fast (F) and Slow (S)
Display Functions:
Normal, Maximum, Minimum, C peak
Measurement Functions:
LAF, LAS, LCF, LCS, LCpk
Leq (CR:310), LEq8h (CR:310)
Noisefloor:
< 25dB (A) and 35dB (C) Display Flags Threshold Limit, Overload, Under-range Auto Calibration Range:
±4.5dB
Reference Point:
94dB (1kHz), 92.9dB (8kHz)
Setting Time:
60s
Display:
Backlit 128×64 LCD，resolution 0.1 dB.
Resolution:
0.1dB
Electrical Inputs:
5V power in via mini USB
Power:
2 x AA/LR6 1.5V batteries
Or
5V DC via Mini USB
Battery Life:
24hrs
Microphone:
½˝ pre-polarised electret condenser type HY:205
Operating Temperature:
0°C to +40°C
Operating Humidity:
25% to 90%
Atmospheric Pressure:
65 kPa to 108kPa
Storage Temperature:
-20°C to +60°C
Dimensions:
215mm×68mm×32 mm
Weight:
220g（including battery)
Electrical Outputs:
AC (Tip 3.5mm jack) and DC (middle 3.5mm jack)
DC Output:
voltage 15mV/dB, range 450mV to 1950mV
AC Output:
RMS 2V
Additional information
| Weight | 0.22 kg |
|---|---|
| Dimensions | 21.5 × 6.8 × 3.2 cm |
| Applications | |
| Basic Noise Level Testing | ✓ |
| Hardware Features | |
| Power Supply Options | |
| Average Operating Time | |
| Sound Measurement Features | |
| Applicable Standards | |
| Total Measurement Range | |
| Frequency Weightings | |
| Time Weightings | |
| SPL | |
| Brand | Cirrus Research |
| Monitoring Duration | Short-term |
CR:308 & CR:310 Sound Level Meter
User Manual
CR:308 & CR:310 Sound Level Meter
Datasheet (English)
CR:308 & CR:310 Sound Level Meter
Datasheet (Chinese)
