CUV5 Total UV Radiometer

CUV5 Total UV Radiometer

CUV5 is a general-purpose instrument measuring the total UV radiation from natural sunlight for applications in meteorology and outdoor material testing.

The high quality dome and diffuser provide optimized directional response. A specially designed optical filter provides sensitivity to combined UVA and UVB irradiance. The photodiode generates a voltage output linearly proportional to the UV intensity. 

Specific parts of the UV spectrum such as UVA, UVB or UVE / UV Index cannot be derived from the CUV5 measurements. For measurement of these individual parameters our specific SUV models are required.

A waterproof plug and socket cable connection facilitates easy installation. The snap-on sun shield protects the connector and allows viewing of the integrated bubble level. The screw-in drying cartridge is easy to remove and the replacement desiccant is supplied in convenient refill packets. 

CUV5 is compatible with the same accessories as our CMP range of pyranometers.

Specifications

Downloads

Manuals

• Manual - CUV5 & SUV Series - Ultraviolet Radiometers

Technical info

• Global Solar UV Index, a practical guide, by WHO

Datasheets

• Datasheet - CUV & SUV Series - UV Radiometers - EN

Declarations

• Declaration of Conformity CUV5 UV Radiometer

Instruction sheets

• Instruction Sheet - UV Radiometers - CUV5

Newsletters

• Newsletter 04 - April 2008
• Newsletter 38 - October 2016
• Newsletter 37 - July 2016
• Newsletter 36 - April 2016

FAQ

• Can I measure specific parts of the UV spectrum with the CUV 5?

  • No, it cannot separate UV-A from UV-B, it measures both together, for measurement of these parameters individually we recommend our UVS Series of radiometers.

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• What is the calibration frequency of UV radiometers?

  • We advise to re-calibrate the UV radiometers every two years.

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• Can a METEON data logger be connected to UVS-A-T and UVS-B-T?

  • No, the input range of the METEON is limited to 200 mV (the output from the UVS-X goes up to 3V)

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• What does ‘Mean Adjustment Factor’ mean on the calibration certificate of a UV radiometer?

  • The ‘Mean Adjustment Factor’ on the calibration certificate is equivalent to the sensitivity of a pyranometer. It applies to specific Ozone column and Air-mass (solar elevation) values used as the standard test conditions. Data files are provided to correct the measured values for other Ozone and Air-mass conditions (see Radiation Amplification Factor).

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• Is there an UV-C sensor available?

  • No, we do not have a UV-C sensor. UV-C from the sun is almost completely absorbed by Ozone in the atmosphere and virtually none reaches the ground. 

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• I noticed that the UVS series has a temperature controller, which make it constant 25 ˚C. Do you think this controller can cover ‘automatic temperature compensation’?

  • Actually our thermostat is better than a temperature compensation. We used to have UVS-X-C versions of our instrument (these were temperature compensated). We stopped that line because the UVS-X-T version performed much better. Temperature compensation means correcting the output for changes in sensor temperature. Because our sensor is always the same temperature there is no compensation required. The internal Peltier element heats or cools the actual complete detection system that measures the UV light.

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• What is the bandwidth of the CUV 5 and why does this not match the UV spectrum?

  • The bandwidth of the CUV 4 is 280 - 400nm. The 50 % points are defined to be 290 - 385 nm. 

    

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• What does ‘Radiation Amplification Factor’ mean?

  • The radiation amplification factor is a correction for solar zenith angle and Ozone column. This is required because these two factors strongly influence the UV measurement.

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• Can the UVIATOR software operate with a Campbell logger and its software? Or, do I have to use LOGBOX-SD for compatibility with UVIATOR?

  • The UVIATOR can work with any data logger that is capable of storing UVS measurements. The UV-data must to be stored in the correct format, and Campbell loggers can do this. More details can be found in the UVIATOR manual.

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• Why do I need the UVIATOR software?

  • For easy correction for solar zenith angle and Ozone column.

    This is required because these two factor strongly influence the UV measurement. With the UVIATOR software you can collect the Ozone column data from the OMI satellite data per date, time and location. With this Ozone data and the solar zenith angle the UVIATOR will calculate the optimal correction for every data point.

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• What is the output range of the UVS radiometers?

  • The UVS series of UV radiometers have an output in the range from 0 - 3 V.

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• Can the data from the CUV4 be used as input to calculate UV index?

  • No. According to the WMO / WHO guidelines for the Global UV Index, UV-I should only be derived from UV-E measurements (or from a spectral instrument such as our Brewer Spectrophotometer).

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• Does the UVS-AB measure UV-A and UV-B at the same time?

  • Yes, the UVS-AB has two independent detection systems.

    The UVS-AB has two continuous, simultaneous, analog outputs; one for UV-A and one for UV-B.
    See below drawing of the UVS-AB for details.

    Beneath the dome and diffuser two sets of filters and detectors are positioned. Detector 1 is 4 times bigger than detector 2. Detector 2 is located exactly in the middle, on top of detector 1. Filter 1 has an opening in the middle for filter 2 plus detector 2. In this way we can make sure both detectors have a 180 degree field of view.

     

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Accessories

	Accessory	Description
	CMF Mounting Fixtures More information	CMF1 and CMF4 mounting fixtures for all series pyranometers	Add To Basket
	CM121B/C Shadow Ring More information	To be used with Kipp & Zonen pyranometers, smart pyranometers, pyrgeometers and UV radiometers to shield the instrument from direct radiation.	Add To Basket
	METEON Data Logger More information	METEON is a hand-held device for use with Kipp & Zonen passive radiometers to display real-time irradiation values and has an integrated data logging function to store up to 3500 samples. METEON will operate for up to 7 weeks on 2 x AA batteries.	Add To Basket
	AMPBOX Amplifier More information	AMPBOX is a current loop amplifier for the complete range of solar radiometers.	Add To Basket
	Adjustable Tilt Radiometer Mounting Kit More information	Mount a radiometer at a desired solar zenith angle between 0° and 90° to measure tilted global or diffuse radiation.	Add To Basket
	Glare Screen Kit More information	Sun protection screen for downward facing radiometers mounted on an albedo/net radiation mounting plate	Add To Basket
	CVF4 Ventilation Unit More information	Ventilating solar radiation instruments improves the reliability and accuracy of measurements and reduces maintenance. CVF4 is a high quality waterproof ventilation unit designed to be used with Kipp & Zonen pyranometers, pyrgeometers, and ultraviolet radiometers.	Add To Basket
	LOGBOX SE Data Logger More information	LOGBOX SE is a weatherproof field data logger with 4G LTE cellular communication. Designed for use with all Kipp & Zonen solar radiation instruments, both analog and Modbus®, including RT1. It is also compatible with DustIQ and Lufft all-in-one weather stations. LOGBOX SE can operate from internal batteries, external DC power or a solar panel.	Add To Basket
	METEON Data Logger More information	METEON is a hand-held device for use with Kipp & Zonen passive radiometers to display real-time irradiation values and has an integrated data logging function to store up to 3500 samples. METEON will operate for up to 7 weeks on 2 x AA batteries.	Add To Basket

Relevant news items

1/18/2010 New Total UV Radiometer

2/27/2013 UVIATOR – UV Irradiance Correction Software

5/31/2018 New Generation of UV Radiometers UVA, UVB and UVE

1/26/2016 Extend your warranty to 5 years!

Application examples

7/19/2013 Choosing the Right UV Radiometer

1/15/2018 Measurement of UV radiation added to Antarctic site of the LES solar measurement network

8/13/2012 Chile, High Potential but Little Solar Data