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UVA/UVC Handheld Light Meter w/ Thermocouple & SD card



Item# HHUV254SD

In stock

Lead Time (If not in stock): 14 weeks
  • Measures Light Intensity
  • Two Automatic Range Selections
  • J/K Thermocouple Input
  • 2 GB SD Card Included

HHUV254SD Model Options

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Measurement Range
Temperature Input
Temperature Range
Operating Temperature
Supply Power

Many industrial and commercial applications require or can benefit from measurement of the intensity of UVA and/or UVC light. Among them are welding (to minimize exposure to “blue light” radiation), UV sterilization of food, photochemical matching, erasure of electrically programmable read-only memory (EEPROM) chips, production of graphic arts products, exposure of photoresists, and curing of inks, adhesives and coatings.OMEGA’s HHUV254SD has the performance and features needed to satisfy the most demanding aspects of these applications. For example, it combines the capabilities of UVA (black light in the long-wave 365 nm band) and UVC (short waves in the 254 nm band) measurement in one instrument. The meter also can measure temperature with a Type K or J thermocouple. A UVA probe and a UVC probe are supplied with the instrument. Because it is microprocessor-based, the HHUV254SD data logger can make full use of the portability, reliabilityand large storage capacities that SD memory cards offer. Measurements of light intensity or temperature can be made automatically at any of 11 sampling rates between one second and one hour. After time-stamping and storing the measurements on an SD card plugged into the instrument, the user can remove the card and transfer the measurements to a laptop or desktop computer either directly or via a USB card reader. The HHUV254SD has a backlit 2 1?2" diagonal display and is powered by 6 “AA” alkaline batteries or an optional 9 Vdc AC adaptor.

Display Type: LCD with green backlight
Display Size: 52 x 38 mm (2.05 x 1.5")
UV Light Types Measured: UVA, UVC
Measurement Range: 240 to 390 nm
Measurement Accuracy: ±4% of full scale reading + 2 digits
Full-Scale Autoranges: 2 mW/cm2 and 20 mW/cm2
Storable/Recallable Readings: Max, min
Data Logging Sampling Time: 1 sec to 1 hr
SD Card Capacity: 1 to 16 GB
Settable Parameters: Date, time, auto power off, beep sound, temperature unit (°C or °F), sampling time, thermocouple Type (K or J), decimal point or comma
Operating Temperature: 0 to 50°C (32 to 122°F)
Operating Relative Humidity: 0 to 85%
Thermocouple Input Ranges and Accuracy:
Type K: -50 to 1300°C (±0.2% + 0.5°C)
-50.1 to -100°C (±0.2% + 1°C)
-58 to 2372°F (±0.2% + 1°F)
-58.1 to -148°F (±0.2% + 1.8°F)
Type J: -50 to 1200°C (±0.2% + 0.5°C)
-50.1 to -100°C (±0.2% + 1°C)
-58 to 2192°F (±0.2% + 1°F)
-58.1 to -148°F (±0.2% + 1.8°F)
Power Supply: 6 Alkaline “AA” batteries or optional 9 Vdc AC adaptor
Power Consumption:
6.5 mADC (normal operation, with backlight off and SD card not saving data)
30 mADC with baclight on
Meter: 177 H x 68 w x 45 mm D (6.97 x 2.68 x 1.77")
UVA Probe Head: 45 (diagonal) x 32 mm L (1.77 x 1.26")
UVA Probe Handle: 24 (diagonal) x 125 mm L (0.94 x 4.92")
UVC Probe: 38 (diagonal) x 25 mm L (1.50 x 0.98")
Meter: 351 g (12.38 oz)
UVA Probe: 100 g (3.53 oz)
UVC Probe: 103 g (3.63 oz)
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Rated 5 out of 5 by from Biomedical Engineering Support Specialist Quick and easy order. Good product. Timely delivery
Date published: 2020-04-27
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I need help with exporting the data from this device in real time using the data out function. Can you assist

Asked by: Mike F
Data stored on the SD card can be transferred via a card reader or serial communication cable but there is no capability of viewing live measurements through the RS232 connection on a computer.
Answered by: ApplicationsEngineerANB
Date published: 2020-04-24

Is there a NIST certificate of calibration for this unit? If not, what certification is available?

Asked by: Buckwalker123
When this unit ships, it is sent with a 'certificate of conformance' which ensures that the unit has been made to published specifications. We do not provide NIST certification for this unit because of its light functions. However, you can send to an outside lab for certification if you like; again, we do guarantee all specs associated with this device.
Answered by: dfrisby77
Date published: 2022-07-22

What is the wavelength range of the UVC probe?

Asked by: Vvelox
The UVC probe measures the light intensity in the 254-nm band.
Answered by: ApplicationsEngineerANB
Date published: 2022-03-21

Can you provide the frequency sensitivity plot of the device?

Asked by: Laine
Unfortunately we do not have that requested information available.
Answered by: ASE HPO
Date published: 2020-09-30
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