The Martindale SPC70 Class 2 Sound Level Calibrator can be used to verify the accuracy of Martindale’s SP79 Class 2 Sound Level Meter and other Class 2 sound meters with microphones up to 25mm.
This calibrator can be used to test the aforementioned sound meters before and after use to check both their functionality and accuracy, as is required in order to maintain compliance with international standards.
The Martindale SPC70 Class 2 Sound Level Calibrator issues a 1kHz reference at 94dB and 114dB. It is accurate to 0.5dB with low levels of harmonic distortion.
The Martindale SPC70 Class 2 Sound Level Calibrator is a simple-to-use yet effective instrument. It is essential for those working with Class 2 sound meters.
Martindale SPC70 Class 2 Sound Level Calibrator Key Features
- Verify the accuracy of Martindale’s Class 2 Sound Level Meters
- Also suitable for checking other Class 2 sound level meters with 25mm microphones
- Ensures compliance with international standards by checking sound meters before and after use
- Issues a 1kHz reference at 94dB and 114dB
- Accurate to 0.5dB with low levels of harmonic distortion
- A simple-to-use yet effective instrument
- Essential for those working with Class 2 sound meters
What’s Included?
- Martindale SPC70 Class 2 Sound Level Calibrator
- 1x 9V Battery
- ½” Microphone Adapter
- Carry Case
- Instructions
Martindale SPC70 Class 2 Sound Lever Calibrator Technical Specifications
Output sound pressure levels | 94dB and 114dB rel 20µPa under reference conditions |
Output frequency | 1000Hz ± 2% |
Accuracy of sound pressure level | ± 0.5dB |
Total harmonic distortion | <3% |
Reference conditions | |
Temperature | 23°C |
Relative humidity | 50% |
Atmospheric pressure | 1013hPa |
Influence of ambient conditions | |
Temperature coefficient | 0.005dB / °C |
Humidity coefficient | 0.005dB / % R.H. |
General | |
Power | 1 x 9V, PP3 alkaline battery (IEC 6LR61, NEDA 1604A) |
Battery life | 40 hours approx. (alkaline battery) |
Low battery indication | Power ON/Low Battery LED illuminates red |
Dimensions | 113 x 63 x 44mm |
Weight | 170g approx including battery |
Includes | 1 x 9V battery, ½ inch microphone adaptor, carry case, instructions |
Environmental | |
Operating conditions | |
Temperature | 0°C to 40°C |
Relative humidity | 10 to 90% R.H. |
Atmospheric pressure | 650 to 1080 hPa |
Storage conditions | |
Temperature | -10°C to 50°C |
Relative humidity | 0 to 70% R.H. |
Functionality | Conforms to BS EN 60942 Class 2 |
EMC | Conforms to BS EN 55011, BS EN 61000-6-2 |
Reviews
SKU | MARSPC70 |
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Manufacturer Part Code | MARSPC70 |