1. Safety Information
Read the following safety information carefully before attempting to use or maintain the meter. Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired. With proper use and care, your digital meter will provide you with satisfactory service for many years.
1.1 Preliminary
- Upon delivery of the meter, check if it has been damaged during transport.
- If the condition is poor due to harsh storage or transport conditions, inspect and confirm this meter without delay.
1.2 During Use
- Use the measuring instrument under the indicated temperature and humidity conditions.
- If malfunctions or anomalies are observed, the meter can no longer be used and must be checked.
- Please do not store or use the measuring instrument in areas exposed to direct sunlight, high temperatures, humidity, or condensation.
- Do not touch or handle the sensor.
- Do not expose the sensor to direct light, as this will cause a false reading.
- Do not expose the sensor to static electricity.
- Never immerse the sensor directly in water or impregnating agents.
1.3 Symbols
- [EMC compliance]
- [Important safety information]
1.4 Maintenance
- Repairs or maintenance not covered in this manual should only be performed by qualified personnel.
- If there is dust on the sensor, use clean air to blow it off or use alcohol to gently rub it. Do not use other chemical impregnating agents for rubbing.
- Do not use abrasive products or solvents on the device; use only a damp cloth and a mild detergent.
- Always set the power switch to the [power-off switch] position when the meter is not in use.
- If the device is to be stored for a long period, the batteries should be removed to prevent damage to the unit.
2. Description
This meter is a multifunctional digital environmental meter that combines the functions of a sound level meter, light meter, relative humidity meter, temperature meter, and anemometer.
This meter is a portable professional measuring instrument with a large LCD and backlight for easy reading.
This meter has a data hold function.
This meter has an auto-ranging function.
This meter has MAX, MIN, AVG, and DIF (MIN-MAX) value measurement functions.
This measuring instrument has an auto/manual power-off function.
A low battery indicator is provided.
2.1 Component Names
The device features a microphone (1) at the top, an LCD display (2) in the center, and various buttons below it. On the side, an Airflow Sensor (8) is visible, along with an illuminance sensor (14) and a temperature/humidity sensor (16). A wind switch (15) is also present. A tripod connector (17) is located at the bottom.
- (1) microphone
- (2) LCD display
- (3) "SET" - setting button
- (4) "MODE" - mode button
- (5) "LUX" - illuminance button
- (6) "dB" - Sound Level Meter button
- (7) "B.L" - Back light button
- (8) Airflow Sensor
- (9) "UNIT" - units button
- (10) "HOLD" - data hold button
- (11) "ANEMO" - anemometer button
- (12) "POWER" - power on/off button
- (13) "TEMP/%RH" Button - temperature/humidity button
- (14) illuminance sensor
- (15) wind switch
- (16) Temperature/humidity sensor
- (17) Tripod connector
2.2 Button Elucidation
- [POWER] Button: Used for switching the power on or off.
- [B.L] Button: Used to switch the backlight on or off.
- [HOLD] Button: Used to switch data hold on or off.
- [MODE] Button: Used to select MAX, MIN, AVG, and DIF (MAX-MIN) measurement values.
- [UNIT] Button: Used to change the measurement units.
- [SET] Button: Used for setting the meter's parameters.
- [TEMP/%RH] Button: Used to switch between temperature and relative humidity measurement.
- [Lux] Button: Used to switch the illuminance measurement.
- [ANEMO] Button: Used to switch between wind speed or airflow measurement.
- [dB] Button: Used to switch the sound level measurement.
2.3 LCD Illustration
The LCD display shows various indicators:
- °C, °F: Centigrade, Fahrenheit indication.
- %RH: Relative humidity indication.
- m/s, km/h, FPM, Knots: Wind speed unit indication.
- CMM, CFM: Airflow unit indication.
- ft, m: Area unit indication.
- X10, X100: Airflow and illuminance multiplier indicator.
- Lux: Illuminance unit indication.
- dB: Sound level unit indication.
- A, C: A-weighting, C-weighting indication.
- MAX: Indicates the maximum value is displayed.
- MIN: Indicates the minimum value is displayed.
- AVG: Indicates the average value is displayed.
- DIF: Indicates the MAX-MIN value is displayed.
- ⏰ [Auto-off indicator]: Indicates that the auto-off function is activated.
- ✋ [Data Hold indicator]: Indicates that the displayed data is held.
- ? [Low Battery indicator]: Indicates that the battery is not sufficient for proper operation.
3. Specifications
3.1 General Specifications
- Numeric Display: 4-digit Liquid Crystal Display.
- Response Time: Approx. 2 times/second.
- Operating Environment: -10°C to 60°C (14°F to 140°F).
- Storage Environment: -10°C to 50°C (14°F to 122°F).
- Power Requirements: Battery - One 9V 006p or IEC 6F22 or NEDA1604 battery.
- Low Battery Indication: ? displayed.
- Dimensions: Meter - 280(L) x 89(W) x 50(H)mm.
- Weight: Approx. 430g.
3.2 Electrical Specifications
3.2.1 Temperature
| Range | Resolution | Accuracy |
|---|---|---|
| -10°C to 60°C | 0.1°C | ±1.5°C |
| 14°F to 140°F | 0.1°F | ±2.7°F |
3.2.2 Relative Humidity
| Range | Resolution | Accuracy |
|---|---|---|
| 20-80%RH | 0.1%RH | ±3%RH @ 25°C |
| (<20, >80)%RH | 0.1%RH | ±5%RH @ 25°C |
3.2.3 Sound Level (dB)
| Range | Resolution | Accuracy |
|---|---|---|
| Specifications for Sound Level are incomplete in the source document. | ||
Test Condition: 94dB 1kHz sine wave. Frequency Response: 100-8000Hz.
3.2.4 Illuminance (Lux)
| Range | Resolution | Accuracy |
|---|---|---|
| Specifications for Illuminance are incomplete in the source document. | ||
Calibrated at color temperature 2850 K with a standard incandescent lamp at color temperature 2856 K.
3.2.5 Wind Speed
| Range | Resolution | Accuracy |
|---|---|---|
| 100~4000FPM | 1 FPM | ±5% of reading ±1 digit |
3.2.6 Airflow
| Range | Resolution | Accuracy |
|---|---|---|
| Specifications for Airflow are incomplete in the source document. | ||
4. Operating Instructions
4.1 Powering On
Press the [POWER] button to turn the meter on or off.
4.2 Auto Power Off
By default, when the meter is turned on, it is in auto-off mode. The meter will shut down automatically after 20 minutes if no key is operated. To disable auto-off, press and hold the [POWER] button, then press the [SET] button. Auto-off will be deactivated, and no indicator will appear.
4.3 Holding the Reading
The user can retain the current reading and keep it on the display by pressing the [HOLD] button. When the held data is no longer needed, the data hold operation can be released by pressing the [HOLD] button again.
4.4 Backlight
If the light is dim and makes reading difficult during measurement, you can press the [B.L] button to turn on the backlight, which will stay on for 10 seconds. You can turn it off at any time by pressing the [B.L] button again.
Note: The LED is the main source of backlight. Its working current is high; frequent use of the backlight will shorten battery life. It is better not to use the backlight as frequently as needed. When the battery voltage is lower than 7V, "?" will be displayed. However, if you use the backlight at the same time, "?" may appear even if the battery voltage is higher than 7V, because the working current is higher and the voltage will drop. (When "E-" appears, the measurement accuracy cannot be guaranteed). You do not need to replace the battery. When used normally (backlight not used), "?" will not appear. You should replace it when "EZI" appears. (Note: The specific error codes like E-, GB], EZI mentioned in the original text are interpreted here as low battery indicators for clarity).
4.5 AVG/MAX/MIN/DIF Measurement
By pressing the [MODE] button, you can select AVG/MAX/MIN/DIF (MAX-MIN) values for measurement.
4.6 Temperature Measurement
For measurement, place the sensor probe in the tested environment. Press the [TEMP/%RH] button to measure. After 20 minutes, the default scale setting is Celsius (°C). The user can change it to Fahrenheit (°F) by pressing the [UNIT] button and back to Celsius by pressing the [UNIT] button again.
4.7 Humidity Measurement
For measurement, place the sensor probe in the tested environment. Pressing the [TEMP/%RH] button twice, after 20 minutes, the device will enter the measurement mode. The sensor response time is 5 seconds.
4.8 Sound Level Measurement (dB)
Position the sensor at the front of the meter towards the sound source. Press the [dB] button to measure, and the LCD display will show the sound level. At the first power-on, the default scale is A-Weighting. The user can change it to C-Weighting by pressing the [UNIT] button and back to A-Weighting by pressing the [UNIT] button again.
Note: Strong wind hitting the microphone can cause reading errors. In windy locations, a windscreen should be used in front of the microphone.
4.9 Illuminance Measurement (Lux)
Move the sensor at the front of the meter towards the light source, keeping it horizontal. Press the [Lux] button to measure, and the LCD screen will display the illuminance.
4.10 Wind Speed Measurement
For measurement, place the anemometer sensor probe in the tested environment, ensuring the fan is vertical to the airflow. Then press the [ANEMO] button to measure. At the first power-on, the default scale is m/s. The user can change it to km/h, FPM, or Knots by pressing the [UNIT] button.
4.11 Airflow Measurement
Before measurement, you must first set the area of the airflow. The default value is 1.0m². Press the [SET] button to enter the area setting. You can press the [UNIT] button to select which digit of the area to adjust.
Subsequently, place the anemometer sensor probe in the tested environment, ensuring the fan is vertical to the airflow. Then press the [ANEMO] button to measure. At the first power-on, the default unit is CMM. The user can change it to CFM by pressing the [UNIT] button and then setting the area again.
Note: During wind speed and airflow measurements, avoid direct sunlight.
4.12 Battery Replacement
If the "?" symbol appears on the LCD display, it indicates that the battery needs replacement. Turn off the device. Remove the battery cover. Replace the depleted battery with a new one. Replace the battery cover as originally fitted.
4.13 Using the Tripod Connector
If necessary, the meter can be fixed to a tripod. The meter can also be hung for use.
5. Accessories
- (1) Battery: 9V 6F22 - One piece
- (2) Windbreak - One piece
- (3) Operation Manual - One piece
- (4) Sensor probe holder - One piece
Supplier/Distributor
Sunnysoft s.r.o.
Kovanská 2390/1a
190 00 Prague 9
Czech Republic