Martindale SP79 Class 2 Sound Level Meter
Suitable for offices, industrial environments and other on-site applications, use Martindale's SP79 for simple measurements of sound in accordance with the Noise at Work regulations.
A type 2 sound meter, the Martindale SP79 features A and C frequency weighting (A replicates the noise a human ear can hear, C is used for measurements of peak sound pressure levels) and fast/slow time weighting. It can be used for single, quick measurements of sound or you can mount the SP79 on a tripod (sold separately) and activate the MIN/MAX mode to calculate the maximum/minimum values taken over a period of time.
The SP79 can measure sound levels from 32 to 130dB and has frequency range from 20Hz to 8kHz. A 1/2 inch electret condenser microphone is built into the top of the instrument and a removeable windshield is included as standard.
Martindale SP79 Class 2 Sound Level Meter Key Features
- Sound meter for basic measurements of sound in offices/industrial conditions etc
- Class 2 sound meter
- Selectable A and C frequency weighting
- Fast/slow time weighting options
- Measurement range from 32 to 130dB
- Digital readout with analogue bargraph display
- Detachable windshield
- Made in accordance with BS EN 61672-1: 2003
- Optional sound calibrator available - part number SPC70
What's Included?
- Martindale SP79 Sound Meter
- 1 x 9V Battery
- Windscreen
- Storage Case
- Instructions
Martindale SP79 Technical Specifications
| Measuring Range | 32 to 130dB |
| Frequency Range | 20Hz to 8kHz |
| Frequency Weighting | A or C |
| Level Ranges | Lo: 30 to 90dB Med: 50 to 110dB Hi: 70 to 130dB |
| Accuracy | ±1.4dB (at reference conditions) |
| Dynamic Range | 60dB |
| Time Weighting | Fast or Slow |
| Microphone | 1/2 inch elecret condenser microphone |
| AC Output | 1V rms at full scale (full scale is the upper limit of the selected level range) |
| DC Output | 10mV/dV |
| Display | Liquid crystal (LCD) Digital, 4 digits, updates 2/second Bargraph, 30 segments, updates 10/sec |
| Power | 1 x 9V, PP3 alkaline battery (IEC 6LR61, NEDA 1604A) |
| Continuous Operating Time | 60 hours typical (alkaline battery) |
| Automatic Power Off | After approx 30 minutes |
| Low Battery Indication | Battery symbol is displayed |
| Dimensions | 258 (L) x 55 (W) x 25mm (D) |
| Weight | Approx 185g including battery |
| Environmental/Other Specs | |
|---|---|
| Operating Conditions | Temperature: 0 to 40°C Relative Humidity: 10 to 90% RH |
| Storage Conditions | Temperature: -10 to 60°C Relative Humidity: 10 to 75% RH |
| Compliance | BS EN 61672-1 Class 2 |
| EMC | BS EN 61326-1 |
| SKU | MARSP79 |
|---|---|
| Manufacturer Part Code | MARSP79 |
| Model Ref | SP79 Sound Meter |
