NADY AUDIO DSM-1X Digital Sound Level Meter Owner’s Manual

DSM-1X
Digital Sound Level Meter
Owner’s Manual

Safety

Read the following safety information carefully before attempting to operate or service the meter.
Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired.
◆ Environment conditions:
Altitude: up to 2000 meters
RH≤90％（Non-Condensation）
Operating Temperature: -20～60℃
◆ Maintenance
Repairs or servicing not covered in this manual should only be performed by qualified personnel.
Wipe the unit with a dry soft cloth. Do not use abrasives or solvents on this instrument.
◆ Safety Symbol
****Comply with EMC

Applications and Features

This Sound Level Meter is designed to meet the measurement requirements of safety Engineers, Health, Industrial safety offices and sound quality control in various environments like factory, school, construction, etc.

• Comply with IEC61672-1 CLASS2 Standard
• Max/Min/Data Hold
• Over range indication
• Under range indication
• A & C Weighting
• FAST & SLOW response

Specifications

Hi: 80dB—I30dB Auto: 30dB-130dB
Accuracy| ±1.4dB
Time weighting| FAST 125ms;SLOW (Is )
Microphone| 1/2 inch electret condenser microphone
Display| 31/2 digits LCD display with a resolution of 0.IdB
Frequency weighting| A & C
Data update| 2 times/sec
Alarm function| “OVER”is when input is more than upper limit of range. “UNDER” is when input is less than lower limit of range.
Auto power off| Meter automatically shuts down after approx. 15 minutes inactivity.
Power supply| One 9V battery, 006P or 1EC 6F22 or NEDA 1604.
Battery life| at least 30 hours
Operating conditions| -20t 60t, 10 %RH-90%RH
Storage conditions| -20t 60t, 10 %RH-75%RH
Weight| 178g
Dimension(LWH)| 1586232mm

Meter Description

1. Microphone
2. LCD display
3. Weighting A/C select button
4. MAX/MIN button
5. Level Range select button
6. Response time FAST/SLOW select button
7. Power ON/OFF button
8. Battery Compartment

LCD Display Description

①Under-range icon
②MAX hold
③MIN hold
④Fast sampling time icon
⑤Slow sampling time icon
⑥Over-range icon
⑦Level range display|  ⑧Analog bar
⑨Measurement reading
⑩Battery icon
⑪Auto range icon
⑫Data hold icon
⑬dBC icon
⑭dBA icon
⑮Auto power off icon
---|---

Operation Instruction

1. Power ON/OFF:
   Turn the meter on by pressing the ” ” button for 1 second. Turn the meter off by pressing and holding the “ ” button for approx. 3 seconds then release the button.

2. Backlight
   After turning the meter on, momentarily press the “ ” button, to turn the backlight on/off. The backlight will automatically turn off after approx. 30 seconds of inactivity.

3. Frequency weighting A/C selection
   Press the “ ” button to select A or C.
   dBA: Follows the frequency sensitivity of the human ear at low levels
   dBC: Follows the frequency sensitivity of the human ear at high levels

4. FAST/SLOW selection
   After turning the meter on, press “ ” to select the desired response time:
   FAST: Fast sampling time measurement,1 time per 125ms.
   SLOW: Slow sampling time measurement, 1 time per second.

5. MAX/MIN
   After turning the meter on, press the “ ” button for three seconds to enter MAX measurement, „MAX‟ will appear on the LCD and the captured maximum sound level will be displayed. Press the key again, „MIN‟ will appear on the LCD and the minimum sound level will be displayed. Hold the button for three seconds to exit MAX/MIN measurement mode.

6. Data HOLD:
   After turning the meter on, momentarily press the ” ” button.
   The “HOLD” icon will appear on the LCD, which freezes the reading on the display. To exit Data Hold mode, press the button again.

7. Level range selection:
   Press the “ ” button, the level range will toggle between the different options:
   Lo：30dB～80dB Med：50dB～100dB
   Hi：80dB～130dB Auto：30dB～130dB

Calibration Procedure

1. Select the following switch settings:
   Frequency weighting: A
   Response ti me: FAST
   Leve l range: 50 ~100dB

2. Insert the microphone housing carefully into the 1/2 inch insertion hole of the calibrator (94dB @ 1kHZ).

3. Turn on the calibrator and adjust the CAL potentiometer until 94.0dB is displayed.

NOTE: Our products are carefully calibrated before delivery.
Recommended recalibration cycle: 1 year.

Basic Operation

1. Open the battery cover and install a 9-volt battery in the battery compartment.
2. Turn on the power and select the desired level range.
3. Select „dBA‟ for low sound levels and „dBC‟ for high sound levels.
4. Select „FAST‟ for short sound bursts and „SLOW‟ for average sound level.
5. Press the „ ‟ button for measuring maximum and minimum noise level.
6. Hold the meter in hand or let it stand in upright position on a table top. The best measuring distance is 1~1.5m away from the microphone to the sound source.

Notes

1. Do not store or operate the meter in high temperature or humidity.
2. Remove the battery when the meter is to be stored for long periods of time to avoid battery leakage.
3. Wind blowing across the will bring unwanted noise. Use the supplied windscreen to cover the microphone when necessary.
4. Keep microphone dry and avoid severe vibration.
5. When the low battery icon “  ” appears, replace the meter’s battery.

Accessories

1. Owner’s manual
2. Windscreen
3. Calibration screwdriver
4. 9V battery
5. Carrying pouch

https://manual-hub.com/

References

• Manual-Hub.com – Free PDF manuals!

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>