HTC INSTRUMENT SL-13A Sound Level Meter User Manual
- June 12, 2024
- HTC INSTRUMENT
Table of Contents
SL-13A
Sound Level Meter User manual
Before using the instrument,please read this manual carefully,and save it well for future using.
Introduction
This sound level meter is used to measure the sound level of the environment: such as factory, workshop, school, residence, office area, traffic road, audio and so on. Also suitable for noise engineering, product quality control, health prevention and control, etc. It can also measure ambient temperature and humidity.
Display screen
| symbols | description | symbols | description |
|---|---|---|---|
| Auto power off | Data hold | ||
| MAX | Maximum value | MIN | Minirmum value |
| °C | Celsius | RH% | Humidity unit |
| °F | Fahrenheit | Low battery | |
| FAST | Quick response | SLOW | Slow response |
| dB | Decibel unit | A | A weighted |
| C | C weighted |
Operation
Considerations
- Wind blowing across the microphone increases the noise measurement. Use the supplied windscreen to cover the microphone when applicable.
- Calibrate the instrument before each use if possible. Especially if the meter has not been used for a long period of time.
- Do not store or operate the instrument in areas of high.
- Keep meter and microphone dry.
- Avoid severe vibration.
- Remove the battery when the meter is to be stored for long periods of time.
Measurement
- Open the protection cover of the meter.
- Press the button to tur on the power.
- After the power is turned on, the meter will start to display the sound pressure level reading.
- Hold the meter and let the microphone face the sound source to be measured.
- Read the measured value from the display.
- Press the button to turn off the power.
Fast/slow time weighted selection
Use the button to select ‘FAST’ (125 ms) or ‘SLOW’ (1 sec) time weighting.
Depending on the selection, ‘FAST’ or ‘SLOW’ appears on the display.
Select the ‘FAST’ response to capture noise peaks as well as fast-emerging
noise. The ‘SLOW’ response is selected to monitor sound sources with
consistent noise sound pressure levels, and also to average out rapidly
changing noise. Fast response can be selected for most applications.
Data hold
Press the button to enable the data retention function. Press the button
again to turn off the data hold function and return to the normal measurement
function.
Backlight
Press the button and hold it for more than 2 seconds to enable or disable the
backlight function.
MAX/MIN function
Press the button to enable the maximum and minimum functions, and then press
the button to display the maximum and minimum values. Press and hold for about
2 seconds to retum to normal measurement function.
Temperature unit selection
Press the button to shift the temperature unit, C or .
A/C weighted selection(for model B)
Press and hold for about 2 seconds to switch A or C weighted.
Automatic Power Off
When the instrument is turned on, the symbol s displayed. The automatic
shutdown function is tumed on by default. If there is no operation within 10
minutes, the meter will automatically shut down.
If you need to cancel the automatic shutdown function, press and hold the
button before turning on the instrument, then press the button to turn on the
power of the instrument, release the button after tuming on the instrument,
and cancel the automatic shutdown if the symbol is not displayed.
Restart the instrument after shutdown to restore the automatic shutdown
function.
Specifications
| Display screan | LCD display |
|---|---|
| Sound level measurement | Range |
| Frequency | 30Hz —8KkHz |
| pynamic Range | 50dB |
| Acouracy | +1.50B (94dB@1KHz) 5dB (94dB@8KHzZ) |
| Freauency weighting | Aweighting. C weighting(for model B) |
| Time weighting | FAST: 125ms, SLOW: 1sec |
| Microphone | |
| Temperature | Range |
| Acouraey | 0.0°C ~ 45.0°C(32°F) |
~113%F) 1 £1.0°C12.0°F .”Others: 1.5°C/3.0°F
Humidity|
Range
| 0.0% ~99.9%RH
Acouraey| 20%- 80%: £5.0RH; Others: 6.0RH
Operating conditions| 0~50°C, <80%RH, altitude less than 2000m
Storage conditions| -10~50°C,
| <B0%RH(remove the batiery)
Auto power off| 10minutes
Power| 3 x 1.5VAAA batteries
Maintenance
Battery replacement
When the meter shows the symbol “ please replace the battery in ime.
- Unscrew the battery cover, and then open the battery cover.
- Remove the batteries from the battery compartment.
- Install the new battery correctly according to the positive and negative marks on the bottom of the battery compartment.
- Reinstall the battery cover and fasten he screws to secure it.
Cleaning
Cauton
To avoid damaging the case, do not use corrosive agents or solvents to
clean the instrument.
Wipe the shell regularly with detergent or damp cloth and detergent.
