High Precision UV Meter LS131 for UV LED Light Source Detection



LS131 UV energy meter is a high-precision instrument designed for UV LED light source detection. This uv meter can measure both the power and energy values of UV light sources, covering a wide spectral response range that includes 365nm, 375nm, 385nm, 395nm, and 405nm. Ideal for applications in UV exposure, UV curing, UV flat printing, and optical communications, it provides comprehensive measurement and data analysis capabilities.


  • Simultaneous detection of intensity and energy of UV LED light sources, with rich statistical functions to display real-time power value, maximum power value, energy value, and measurement time.
  • A power curve diagram for analyzing light intensity distribution.
  • High-temperature resistant design, capable of operating in environments up to 100 degrees Celsius.
  • Front detector design for convenient data reading during tests.
  • High-speed data acquisition at 2048 times per second, ensuring accurate test data.
  • Complimentary PC software for exporting test data to Excel and generating printable PDF test reports.
  • Wide spectral response to measure UV LED light sources across various wavelengths.
  • Built-in timer to accurately record UV curing time, with a large-capacity memory that can store up to 60,000 data points.
  • Automatic display of the last test data upon power on, preventing data loss.


Spectral range

340nm-420nm, calibrated at 395nm

Irradiance measuring range


Irradiance resolution


Energy measuring range


Energy measuring accuracy

±10%,±5% (typical)

Sampling speed

2000 times/second

Irradiance data storage interval

32 times/second

Recording period

32 minutes

Power supply

4 AAA alkaline dry batteries


240*160 Dot matrix LCD


160mm × 75mm × 13mm (L*W*H)


303 g

Packing List

1. LS131 UV Energy Meter *1

2. USB cable *1

3. Software USB flash disk *1

4. Small cross screwdriver *1

5. User manual *1

6. Factory report/Warranty card *1

7. Plastic box *1

Free Shipping

Under normal circumstances we offer free shipping on all orders, you will see the free shipping option in your cart at checkout. There is no choice of carrier for free shipping, but typically we will ship your order will likely ship using either USPS or FedEx. Full Shipping Policy

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.). Full Returns Policy

When Will My Order Ship?

For Standard Shipping, we aim to pack and ship out your order within 3 business days. During special periods, such as heavy order processing or local inventory shortages that require deployment, please expect it to take an additional day or two for processing.
We ship five days a week, Monday through Friday. Sometimes our mail pickup comes in early afternoon, so tracking for orders shipped later that day may not update until the following business day.
You will receive a shipment confirmation with tracking information via email when your order has shipped. Once you receive this email, we cannot change or cancel your order.

Can I Change The Shipping Address On My Order?

Please contact us immediately via email if you realize that you gave us the wrong shipping address — if it hasn't shipped yet, we might be able to correct it before it goes out the door.
If your order ships to the address provided and is returned to us as undeliverable, then you are responsible for paying the cost of shipping again to resend it to you. If you decide you do not want your order reshipped, we'll refund you for the products less the original shipping charges, once your order returns to our warehouse. We'll reach out to you to coordinate your options before re-shipping.
If your order ships to an incorrect address provided at the time the order is placed and is not retrievable, we are not responsible and cannot offer reimbursement.

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High Precision UV Meter LS131 for UV LED Light Source Detection
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