Extech UV505 UV-AB Light Meter
User Manual
Introduction
Thank you for purchasing the Extech UV505 UV-AB Light Meter. This instrument measures UV-AB intensity in the 290~390nm wavelength range. It has been fully tested and calibrated before shipment and will provide years of reliable service with proper use. Visit www.extech.com for the latest user manual, product updates, and customer support.
Features
- Professional high-quality UV intensity meter
- Measures UV radiation
- Wavelength range 290 nm to 390 nm
- Dual ranges for higher accuracy (0~3999 µW/cm² / 0~39.99 mW/cm²)
- Auto power off after 15 minutes
- Lightweight, ergonomic design
General Safety Information
Read this user manual before operating the meter. Always use the meter as intended and do not attempt to repair or open the meter casing. Keep the meter and protective cover away from children. Dispose of batteries and the meter properly according to all applicable laws and regulations.
- To avoid damaging this precision instrument, do not attempt to measure beyond the ranges specified in this manual.
- Do not use the meter in direct sunlight or in locations with excessive temperature and/or humidity.
- Do not immerse the meter in liquid.
UV Safety Information
Exercise extreme caution when testing UV light sources with this meter. Exposure to UV radiation can be hazardous, depending on the duration of exposure, intensity of radiation, wavelength, and individual sensitivity to UV light.
Meter Description
The Extech UV505 meter features a light sensor, LCD display, and several control buttons. The battery compartment and tripod mount are located on the back of the meter.
Meter Components:
- 1. Light Sensor: Measures UV radiation (protective cap not shown).
- 2. LCD Display: Shows measurement readings, status indicators, and selected units.
- 3. Backlight Button: Activates the LCD backlight.
- 4. ZERO Button: Resets the display to zero, typically with the sensor cap on.
- 5. Power Button: Turns the meter on or off.
- 6. Unit Button: Switches between µW/cm² and mW/cm² measurement units.
- 7. HOLD Button: Freezes the current reading on the display.
A diagram illustrates the meter with numbered parts corresponding to the list above.
LCD Display Description
- 1. Measurement Reading: Displays the current UV intensity.
- 2. Data Hold: Indicates that the display is frozen.
- 3. Zero Mode: Indicates that the meter is in zeroing mode.
- 4. Low Battery Indicator: Shows when the batteries need replacement.
- 5. Measurement Unit: Displays the selected unit (µW/cm² or mW/cm²).
The LCD screen displays the measurement value (e.g., 3999), the unit (µW/cm²), and various indicators like HOLD, ZERO, and a low battery symbol.
A diagram illustrates the LCD screen with numbered elements.
Button Functions
- [Power Button]: Press to turn the meter on or off.
- [HOLD Button]: Press to freeze/unfreeze the displayed reading.
- [Unit Button]: Short press to toggle between µW/cm² and mW/cm² units.
- [Backlight Button]: Short press to turn on the backlight. The backlight turns off automatically after 10 seconds.
- [ZERO Button]: With the sensor protective cap on, press this button to zero the display. Press again to exit zeroing mode.
Operation
Powering the Meter
Short press the [Power Button] to turn the meter on or off. If the LCD display does not turn on, check the batteries in the compartment on the back of the meter. The meter will automatically shut off after 15 minutes of inactivity.
Zeroing the Sensor
With the sensor protective cap on, short press the [ZERO Button] to zero the display before taking measurements. The display will show the "ZERO" indicator while zeroing. Press the [ZERO Button] again to exit this mode; the "ZERO" indicator will turn off.
Taking Measurements
Remove the sensor protective cap and point the light sensor towards the UV light source. View the measurement on the meter's LCD display.
Selecting Ranges and Units
Short press the [Unit Button] to switch between measurement ranges (mW/cm² and µW/cm²). The selected range will be indicated in the lower area of the display.
Data Hold
Short press the [HOLD Button] to freeze/unfreeze the displayed reading.
Backlight
The LCD backlight function is useful for viewing the display in low-light conditions. Short press the [Backlight Button] to turn on the backlight. The backlight automatically turns off after 10 seconds.
Measurement Precautions
- Keep the light sensor clean and free of scratches. Gently wipe away dust with a dry, lint-free cloth.
- Avoid reflective light or shadows on the sensor during measurement.
- For best accuracy, take multiple readings to ensure the light source has stabilized.
Maintenance
Replacing the Battery
- Turn off the meter.
- Press and hold the locking tab on the battery compartment (located on the back of the meter) and slide the battery compartment door open.
- Replace with 2 x 1.5V 'AAA' batteries, ensuring correct polarity. Reinstall the battery compartment door.
Battery Safety: Dispose of batteries properly; do not dispose of them in a fire, as they may explode or leak. If the meter is left unused for more than 60 days, remove the batteries and store them separately.
Do not dispose of used or rechargeable batteries as household waste. As a consumer, you are legally obligated to return used batteries to appropriate collection points, retail stores, or any battery distributor.
Disposal: Do not dispose of this meter as household waste. Users are obligated to hand over end-of-life equipment to designated collection points for the recycling of electrical and electronic equipment.
Cleaning and Storage
Wipe the meter casing periodically with a damp cloth and mild detergent; do not use abrasive cleaners or solvents. Use a dry, lint-free cloth to remove debris and dust from the sensor. Avoid using any material that could scratch the sensor surface.
Specifications
| Parameter | Value | ||
|---|---|---|---|
| Display | 3-3/4 digit (4000 counts) backlit LCD display | ||
| Display Size | 35 x 30mm (1.4 x 1.2") | ||
| Sampling Rate | Approx. 3 seconds | ||
| Measurement | UV-AB Light | ||
| UV Sensor Spectral Range | 290 to 390 nm | ||
| Peak Sensitivity Wavelength | 365 nm | ||
| Input Overload Display | "OL" | ||
| Tripod Mount | Located on the rear panel | ||
| Power | 2 x 1.5V AAA batteries | ||
| Battery Life | Approx. 50 hours | ||
| Auto Power Off | After 15 minutes of inactivity | ||
| Operating Temperature/Humidity | 5 to 40°C (41 to 104°F) / < 80% RH | ||
| Storage Temperature/Humidity | -10 to 60°C (14 to 140°F) / < 70% RH | ||
| Dimensions/Weight | 133 x 48 x 23mm (5.2 x 1.9 x 0.9") / 90g (3.2oz) | ||
| Safety Compliance | For indoor use only. EMC: EN61326 (1997), A1 (1998), A2 (2001); Pollution Degree 2 | ||
| Electrical Specifications (23±5°C) | |||
| UV-AB | |||
| Unit | Range | Resolution | Accuracy |
| mW/cm² | 0 to 39.99 | 0.01 | ± 4% Full Scale Value |
| µW/cm² | 0 to 3999 | 1 |
Customer Support
Support Hotline:
- USA: (877) 239-8324
- Other Countries/Regions: +1 (603) 324-7800
Technical Support: Option 3
Repair/Returns: Option 4
Technical Support Email: support@extech.com
Service Email: repair@extech.com
