EXTECH INSTRUMENTS
User Manual
Photometer UVA-UVB
Model UV505
User manuals available in other languages on our website: www.extech.com
Device Overview
The Extech UV505 is a handheld UV-AB Light Meter designed to measure ultraviolet light in the UVA-UVB range. It features a digital display capable of showing readings up to 3999, measurement units (µW/cm² or mW/cm²), and several control buttons. The device has a sensor at the top and a compact, ergonomic design.
Introduction
Thank you for choosing the Extech UV505 UVA-UVB photometer. This device measures ultraviolet UVA-UVB light within the wavelength range of 290 to 390 nm. The unit is shipped fully tested and calibrated and, with proper use, should provide many years of reliable service. Please visit our website (www.extech.com) for the latest version of this User Manual, product updates, and to contact Customer Support.
Features
- High-quality professional UV photometer
- Measures ultraviolet radiation
- Wavelength range: 290 nm to 390 nm
- Two measurement ranges for enhanced accuracy (0~3999 µW/cm² / 0~39.99 mW/cm²)
- Automatic power-off after 15 minutes
- Lightweight, ergonomic design
General Safety
Please read the entire user manual before operating this device. Use the meter only as described, and do not attempt to repair or open the device casing. Keep children away from the meter and its protective cap. Dispose of batteries and the meter responsibly, in accordance with applicable laws and regulations.
- To prevent damage to this precision instrument, do not attempt to take measurements outside the ranges specified in this manual.
- Do not use this meter in direct sunlight or in environments with excessively high temperature and/or humidity.
- Do not immerse the meter in liquid.
UV Safety Information
Exercise extreme caution when using this meter to test a UV light source. Exposure to UV radiation can be dangerous depending on the duration of exposure, the intensity of the rays, the wavelength, and individual sensitivity to ultraviolet radiation.
Device Description
The Extech UV505 meter is designed for ease of use and accurate UV measurement. The following describes its main components and controls.
Parts of the Meter
A diagram shows the front of the Extech UV505 meter with numbered callouts: 1. Photosensitive sensor (protective cap not shown) 2. LCD screen 3. Backlight button 4. Zero button 5. Power ON/OFF button 6. Measurement unit toggle button 7. Display Data Hold button Note: The battery compartment and tripod mount are located on the rear of the meter.
LCD Screen Description
The LCD screen displays measurement readings and status indicators: 1. Measurement reading 2. Data Hold indicator 3. Zero Mode indicator 4. Low battery indicator 5. Measurement unit (µW/cm² or mW/cm²)
Button Descriptions
| Button | Function |
|---|---|
| [Power Symbol] | Press to turn the meter ON or OFF. |
| [H Symbol] | Press to lock/unlock the displayed measurement on the screen. |
| [UNIT Symbol] | Briefly press to toggle between µW/cm² and mW/cm² ranges. |
| [Light Bulb Symbol] | Briefly press to activate the backlight. The backlight automatically deactivates after 10 seconds. |
| [ZERO Symbol] | With the protective cap on the sensor, press to zero the display. Press again to exit. |
Operation
Powering the Device On/Off
Briefly press the power button [Power Symbol] to turn the meter ON or OFF. If the LCD screen does not light up, check the battery status in the compartment on the rear of the device. The meter automatically powers off after 15 minutes of inactivity.
Zeroing the Sensor
With the sensor's protective cap in place, briefly press the [ZERO Symbol] button to zero the display before taking measurements. The display will show "ZERO" while the meter is zeroing. Press the [ZERO Symbol] button again to exit this mode, and the "ZERO" indicator will disappear.
Taking Measurements
Remove the sensor cap and point the photosensitive sensor towards the ultraviolet light source. View the measurement displayed on the screen.
Selecting Measurement Range and Unit
Briefly press the [UNIT Symbol] button to toggle between the measurement ranges (mW/cm² and µW/cm²). The lower display area shows the selected range.
Data Hold
Briefly press the [H Symbol] button to lock or unlock the displayed measurement on the screen.
Backlight
The LCD screen is equipped with a backlight system to facilitate viewing, especially in dimly lit areas. Briefly press the backlight button [Light Bulb Symbol] to activate the backlight. The backlight automatically deactivates after 10 seconds.
Measurement Considerations
- Keep the light sensor clean and free from scratches. Remove dust by gently wiping with a dry, lint-free cloth.
- Avoid any reflections or shadows on the sensor during measurement.
- For optimal accuracy, repeat measurements several times to ensure the light source has remained stable.
Maintenance
Battery Replacement
- Turn the meter OFF.
- Press and hold the release button located above the battery compartment (on the rear of the meter), then slide the battery compartment cover downwards.
- Replace the two 1.5V "AAA" batteries, observing correct polarity. Reassemble the meter before use.
Battery Safety Precautions: Please dispose of batteries responsibly. Never incinerate batteries, as they may explode or leak. If you do not intend to use the device for 60 days or more, remove the batteries and store them separately. Never dispose of used or rechargeable batteries with household waste. Consumers are legally required to return used batteries to an appropriate waste collection site, the point of sale where the batteries were purchased, or any location selling batteries.
Disposal: Do not dispose of this device with household waste. Users are required to return end-of-life devices to an authorized collection point for the disposal of electrical and electronic equipment.
Cleaning and Storage
Periodically wipe the casing with a damp cloth and mild detergent. Do not use abrasive products or solvents. Remove debris and dust from the sensor using a dry, lint-free dust cloth. Avoid any material that could scratch the sensor surface.
Specifications
| Feature | Specification |
|---|---|
| Screen | 3-3/4 digit backlit LCD (4000 count) Dimensions: 35 x 30 mm (1.4 x 1.2") |
| Sampling Rate | Approx. 3 seconds |
| Measurement Type | Ultraviolet Light (UVA-UVB) |
| UV Sensor Spectrum | 290 to 390 nm |
| Peak Sensitivity Wavelength | 365 nm |
| Overload Display | "OL" |
| Tripod Mount | On the rear panel |
| Power Supply | 2 x 1.5V "AAA" batteries |
| Battery Life | Approx. 50 hours |
| Auto Power Off | After approx. 15 minutes of inactivity |
| Operating Temperature/Humidity | 5 to 40 °C (41 to 104 °F) / 80% RH max. |
| Storage Temperature/Humidity | -10 to 60 °C (14 to 140 °F) / 70% RH max. |
| Operating Altitude | 2000 meters (7000 feet) maximum |
| Dimensions/Weight | 133 x 48 x 23 mm (5.2 x 1.9 x 0.9") / 90 g (3.2 oz) |
| Safety | Intended for indoor use only. EMC (Electromagnetic Compatibility): EN61326 (1997), A1 (1998), A2 (2001); Pollution Degree 2 |
Electrical Specifications (23 ± 5 °C)
Ultraviolet Light (UVA-UVB)
| Unit | Range | Resolution | Accuracy |
|---|---|---|---|
| mW/cm² | 0 to 39.99 | 0.01 | ± 4% of total |
| µW/cm² | 0 to 3999 | 1 | ± 4% of total |
Customer Support
Contact Numbers:
United States: (877) 239-8324
International: +1 (603) 324-7800
Assistance Options:
Technical Support: Option 3
Repair/Return: Option 4
Email:
Technical Support: support@extech.com
Repair Service: repair@extech.com
