Class 1 Sound Level Meter NL-53 / Class 2 Sound Level Meter NL-43
with Extended Function Program NX-43EX Instruction Manual Operation Guide

Safety Precautions / Precautions for Use

Safety precautions

The precautions shown here are intended to help you use the product safely and correctly, and to prevent harm and damage to you and other people. Incidents that could occur as a result of incorrect handling are divided into two categories: “WARNING” and “CAUTION”. Make sure to follow the contents of all these categories because they are serious matters related to safety.

Examples of pictorial indications

Specific prohibitions may be displayed in the illustrations.

Prohibitions Prohibitions Instructions Instructions
Display Meaning
WARNINGWARNING Indicates a possibility of death or serious injury due to incorrect handling.
CAUTIONCAUTION Indicates a possibility of personal injury or property damage due to incorrect handling.
Important Failure to observe the precautions indicated by this may result in damage to the device.

Note

Denotes special information that is helpful in utilizing the capabilities of the device but that is not directly related to safety.

• Handling of the batteries

WARNING

If electrolyte leaking from the batteries gets into your eyes, rinse with water without rubbing and immediately seek medical attention.
Failing to do so may result in blindness.
If electrolyte leaking from the batteries gets on your skin or clothes, wash it off immediately with water.

• Handling of this product

WARNING

Never disassemble, repair, or modify the product.
Doing so may cause a fire, electric shock, or an accident.
Do not connect the power cable or remove the main unit with wet hands.
Doing so may cause electric shock or injury.
Do not immerse the main unit in water or splash water on it.
The microphone is not waterproof. Immersing it in water or splashing it with water may cause electric shock or malfunction.
The water resistance of the main unit only mitigates potential damage caused by a small amount of rainfall, etc. If the main unit is exposed to more than a small amount of rainfall, etc., it may cause electric shock or malfunction.
Do not use the device for purposes other than for what it is originally intended.
Keep the product away from heat sources such as fire and stoves.
Failure to do so may cause a fire, electric shock, or malfunction.
Do not use the device if any abnormality such as damage is discovered.
Continuing to use the device regardless of an abnormality may cause electric shock or fire. In such circumstances, please contact your dealer.
Do not use the device if there is something wrong with it, such as it becomes abnormally hot.
Doing so may result in a malfunction or fire.
Do not use or connect to the power supply in a humid place such as a bathroom or in a place where it may get wet.
Doing so may cause electric shock or malfunction.
Do not use, store, or leave the product in a hot place such as in a place exposed to fire, direct sunlight, or inside a car on a hot day.
Doing so may cause fire, battery breakage, or overheating.
When disposing of the product, do not set it alight.
Doing so may cause a fire or the batteries to explode. When disposing of the product, follow the regulations of your country or local municipality.
Do not use the power cable connected to the optional AC adapter with a voltage other than 100 V AC.
The power cable connected to the AC adapter is a 100 V AC compatible cable that conforms to electrical safety standards. We cannot guarantee the safety of the device if it is used with a voltage other than 100 V AC. Use the power cable that complies with the laws and regulations of your area.
If there is dust on the external power supply port, wipe it off before connecting the AC adapter.
Failure to do so may result in electric shock, short circuit, or fire.
Wipe off any water on the main unit and the external power supply port before connecting to the power supply.
Failure to do so may result in electric shock, short circuit, or fire.
If there is a problem with the device during use, turn off the power and disconnect the AC adapter and remove the batteries.
In such circumstances, please contact your dealer.
Always turn off the power after use.
Turn off the power and remove the batteries if you intend to store the product for a long time without using it. Leaving the batteries may cause the electrolyte to leak. Remove the AC adapter.
Make sure to hold the plug or connector when disconnecting a cord or cable.
Do not apply excessive force, such as holding the cord or cable and pulling them out.

CAUTION

Do not use or store the product within the reach of children or pets.
Doing so may result in electric shock, injury, or accidental ingestion.
Do not store the device in places in which it will be subject to water, dust, high temperatures, high humidity, or in direct sunlight. Do not use or store the device in places where it may be adversely affected by salt, sulfur, chemicals, gases, etc.
The operating temperature for this device is -10℃ to +50℃ and the humidity range is 10% to 90% RH.

* In the event of a product defect caused by RION, RION will repair or replace the device.

Precautions for use

  • Avoid using and storing the product in places with high temperatures and humidity, or in places exposed to direct sunlight for long periods of time.
  • If there is a drastic change in the surrounding temperature, the product may malfunction due to internal condensation.
  • As the main unit is a precision electronic device, avoid using or storing it in locations subject to shock or vibration.
  • If you do not intend to use the device for a long time, remove the batteries, and store it.
  • Do not insert wires, metal pieces, conductive plastics, etc. through any holes or gaps in the product. Doing so may result in a malfunction.
  • Do not replace the microphone or preamplifier with those with numbers different from those specified on the serial number label.
  • Do not use the preamplifier of this device with other sound level meters. Doing so may damage the preamplifier.
  • If you are using the device outdoors and it starts raining, stop taking measurements and keep the device dry.
    If the device gets wet, wipe it off with a dry cloth and dry it in a well-ventilated environment.
  • Make sure the microphone and microphone grid are installed securely before using or storing the device. If there is any looseness, turn off the power, retighten the microphone and microphone grid before using or storing the device.
  • Store the device in an appropriate position in the included carrying case.
  • Two device units can be stored in the carrying case. If storing a device in an empty space in the case, wrap the device with bubble wrap to protect it. Note that we assume no responsibility for any damage or malfunction of the device if it is stored in an empty space.
  • The touch panel surface is easily damaged, so do not poke or hit it with an object such as a pen, pencil, or screwdriver.
  • To maintain the accuracy of measurements, inspect the device regularly. When using the device for transactions or certification activities, the device needs to be subject to an authorized inspection according to the rules and regulations of the relevant country.
  • Be aware that removing the sticker will cause the device to be no longer subject to the dustproof and waterproof performance warranty.
  • Note the following points to maintain the dustproof and waterproof performance of the device:
    • Make sure that the battery compartment cover and bottom cover are closed securely.
    • Do not open the battery compartment cover or bottom cover while the device is wet.
    • Do not leave the device in a wet state. Wipe off any water droplets and dry the device.
    • To check the dustproof and waterproof performance of the device, send it for regular inspection and calibration.
    • We recommend regularly having the packing inside the case and the bottom cover replaced (for a fee).
      For replacement of the packing and the bottom cover, please contact your dealer.
  • The rechargeable backup battery for the clock of this device is a consumable item. We recommend regularly having the battery replaced (for a fee). For replacement of the rechargeable battery, please contact your dealer.
  • Use the SD cards sold by RION, as they are guaranteed to work.
  • Be sure to turn off the power before inserting or removing the SD card.
  • Never format the optional program card such as NX-43WR with SD card formatting software (such as SD Formatter).
    Otherwise, the program data on the card will be erased and the respective functions can no longer be used.
    Restoration of the erased program is not guaranteed.

[Disclaimer]

  • RION shall not be held accountable for the following damages:
    Any damage caused by earthquakes, lightning, wind and floods, fires for which RION is not responsible, actions or accidents by a third party, intentional or negligent misuse by the customer, or use under other abnormal conditions.
  • RION shall not be held accountable for the following incidental damages arising from the use or inability to use this product:
    Alteration or loss of recorded content, loss of business profits, or the interruption of business, etc.
  • RION shall not be held accountable for any damage caused by not following the contents of this document.

[Cleaning the product]

  • To clean the device, use a dry, soft cloth or a cloth wrung out with lukewarm water. Do not use organic solvents such as benzene or alcohol.

[What to do when disposing of the product]

  • When disposing of this product or batteries, make sure to consult with your local municipality.