UV is our Business

uvLink IoT

The uvLink IoT is a UV sensor node to be connected via WiFi to an MQTT server. A physical proximity between the nodes is not required. Accordingly, the device is suitable for measurements at different locations (e.g.) ships, which are to be evaluated centrally in real time. It includes a customized calibration and expert support tailored to the application’s specific requirements.

Single Price: 820,00€

Description

We gladly advise you on this product

Romana Sonnenberg
Dipl.-Ing.

+49 (0) 30 53015211

Gabriel Hopfenmüller
Dipl.-Ing.

+49 (0) 30 53015211

UV Sensors FAQ

Is the sensor calibrated?

No, the sensor is not calibrated. If required, the sglux calibration laboratory offers an individual calibration service including a calibration certificate. This document assigns the voltage output or the current value of one specific sensor to the irradiation of a specific UV radiation source. As-delivered the sensor is sensitive in the specified range. Please find further details at the sglux website’s calibration section.

What must be observed with regard to EMC stability when installing a probe?

All sglux sensors are supplied with shielded cables. The shield must be earthed by the user on the measuring device side. On the sensor side, the shield is not connected to the sensor housing in order to avoid ground loops in the event of contact with a system housing with a different potential than the measuring device.

Which sensors can be used as a submersible sensors?

All our PTFE sensors (UV-Cosine, UV-Water-PTFE and UV-Radial) are generally suitable for this purpose and are supplied with a special cable gland.

What types of stainless steel are used for the sensors?

Our standard stainless steel is 1.4404, but we can also manufacture our sensors in other steel grades on request.

Which sensors can also be used to measure at higher temperatures (85-170°C)?

All stainless steel sensors can also be used at higher temperatures. These must then be configured with a photocurrent output, which is connected to an external amplifier such as the RADIKON_simple.

What about the time constant of a UV sensor?

By default our sensors do have a large time constant because most applications measure slowly changing signals. The time constant depends on the sensitivity of the device and ranges between 50ms and 200ms. For detection of Xenon flash light or pantograph arc detection according to EN 50317 we produce special solutions with application adapted time constants. If for other applications a shorter time constant than 50 ms … 200 ms is needed we are happy to produce a customized version. Time constant reduction is possible down to 100 µs depending on the irradiance level of the application (gain value).

Do you offer UV sensors for outdoor measurements?

We offer our UV-Cosine sensor for outdoor measurements. The housing is waterproof IP68 at window side, stain repellent and on request submersible.

UV Radiometers FAQ

How much does a good UV radiometer cost?

UV radiometers are available on the internet for as little as about €50. However, we do not recommend buying these radiometers, as they usually do not provide any information about the calibration procedure and the spectral properties of the sensor. For hobby UV measurements or for a rough estimate of the UV irradiance during laboratory experiments, we recommend the measuring devices from the American manufacturer Solarmeter. These devices are based on an sglux SiC photodiode, are robust and come with calibration and spectral information. They are offered in various web shops for around EUR 200. The sglux UV radiometers cost about EUR 1,000. They are used in industrial applications or for scientific work where precise knowledge of the irradiance is relevant. In contrast to the Solarmeter products, our radiometers offer additional functions, such as dose measurement and a logging function. The sglux radiometers also have a field of view which is almost perfectly matched to the cosine function. This allows for a good reproducibility of the measurements and a good comparison with measurements taken at other locations. Another advantage of purchasing a sglux measurement device is that that we customize our devices in cooperation with the customer with regard to the dynamic range, the spectral properties and the PTB-traceable calibration, which is always included in the price. This is how we ensure the measurement success of our customers. The measurement devices from sglux are a bit less expensive than other devices on the market that are suitable for professional use. The reason for this is the display unit chosen by sglux, a smartphone. This eliminates the costs of an elaborate in-house production of the display unit. Sometimes a UV radiometer is not enough. This is always the case when knowledge of the total value (integral) of a radiation source does not provide sufficient information, but rather the spectrum of the source, resolved by wavelength, is to be determined. For this, a spectroradiometer is required. In our laboratories, we use the BTS spectrometers from Gigahertz Optik for this purpose, and we can recommend their purchase.

Which waterproof UV measuring device can I operate permanently outdoors?

sglux offers the UV transmitter, a solar-powered network node with a connection to the mobile phone network or the UVMicrolog data logger. Both devices can be equipped with different sensors and different calibrations.

Which device is suitable for a belt application (sterilization or curing line)?

sglux is specialized in in-line monitoring, i.e. the continuous monitoring of emitters using permanently installed sensors. By using the radiation-hard semiconductor material SiC, this is also possible at very high irradiation. If the design of the system does not permit in-line monitoring, the uvLink or the UVMicrolog can move across the conveyor belt.

Which devices are suitable for DVGW/ÖNORM-compliant measurement?

sglux offers the UVRRM reference radiometer, which is approved for many years. If more than one or special calibrations are required (e.g. LED), the UV Radiometer SXL 55 or the UVTOUCH should be used.