TRIPLETT SLM400 Sound Level Meter 35 to 130 dB
The TRIPLETT SLM400 supports noise-level surveys around workplaces, buildings and equipment. Two measuring ranges, selectable A/C frequency weighting and fast/slow response allow the operator to configure a check and record the result in decibels.
Key Features
- Selectable A/C weighting for different survey methods.
- Fast or slow response to suit changing sound levels.
- Data hold and maximum hold simplify inspection and recording.
- Manufacturer-listed windscreen and pouch case.
Technical Specifications
| Low range | 35–100 dB |
| High range | 65–130 dB |
| Resolution | 0.1 dB |
| Stated accuracy | ±1.5 dB |
| Frequency response | 31.5 Hz–8 kHz |
| Response time | 125 ms / 1 s |
| Battery | 9 V |
Package Contents
SLM400 meter, 9 V battery, windscreen and pouch case, as listed by the manufacturer. The standard SLM400 does not imply an included sound calibrator or NIST certificate; separate versions are offered for those configurations.
Suitable Applications
Comparative noise surveys around machinery, construction areas and facilities, including checks before and after operational changes. Establish measurement positions, timing and settings before comparing results.
Important Before Purchase
Set weighting, response and range to match the survey plan. Keep the microphone clear of obstructions and use the windscreen where appropriate. This meter measures sound level; personal shift exposure requires an appropriate method.
Frequently Asked Questions
Is a NIST certificate included? This is the standard SLM400, not the SLM400-NIST version.
What changes between Fast and Slow? The response time changes between125milliseconds and1second.
Recommended Products
- WADFOW WTM1503 Temperature and Humidity Meter — For separate ambient temperature and humidity checks alongside the inspection readings.
- TRIPLETT GSM400 CO2 Temperature and Humidity Meter — For CO2, temperature and humidity checks during indoor environmental surveys; it does not replace a detector for other gases.
- TRIPLETT EPC175 PM2.5 and PM10 Air Quality Meter — For a separate PM2.5 and PM10 particle check during air quality inspections.
- JADEVER Infrared Surface Thermometer — For non contact equipment surface temperature comparisons; it measures a surface, not internal sample temperature.
- WISEUP 16 Inch Tool Bag — To organize small inspection tools during transport; check internal dimensions before packing the instrument and accessories.