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May 2012

New PYROSENS detectors: 4-channel infrared detectors and 510-element linear arrays

The range of DIAS Infrared’s multi-channel detector series PYROSENS is now supplemented with thermally compensated 4-channel sensors in TO8 housing. These are both offered with integrated FET (voltage operation) and with operational amplifier (current mode). The sensors, which four channels are optically isolated and can be fitted with different spectral filters, are characterized by a high specific detectivity and can preferably be used for spectrometric applications even with high ambient temperature fluctuations.

Also now available in addition to the proven DIAS line detector with 128 and 256 elements are the first models with 510 elements. Compared to equivalent linear arrays based on other pyroelectrics our lithium tantalate arrays are characterized by very low NEP and a broad spectral range of applications, starting from 1.3 µm to about 100 µm wavelength. All PYROSENS line detectors can be fitted with virtually any long-pass, band pass filters or variable filters and thus to provide for highly sensitive measurement applications in spectroscopy and thermography.

Photos: New PYROSENS detectors: 4-channel infrared detectors and 510-element linear arrays (JPG)

April 2012

New: DIAS Temperature Switch PYROSWITCH

Based on DIAS pyrometers the temperature switch PYROSWITCH has been developed.Is a hot object placed in the beam path of the temperature switch, a switching process will be triggered when a temperature threshold has been exceeded. The threshold temperature (set point) can be set between 200 °C and 1800 °C directly at the device. The switching time is very short (1ms). With various fixed optics, the beam path of the temperature switch can be optimally adapted to the geometric conditions at the measurement location. The electrical switching signal is output via a potential-free PhotoMOS relay. A status LED indicates the status of "switch-on". Switching between L/H and H/L can be done on the device. For the optical alignment of the temperature switch there is an LED pilot light. The unit is housed in a rugged steel housing (IP 65). Accessories such as brackets, air purge units and cooling jackets are available. Applications for the temperature switch are for example: detecting and counting or the positioning of hot objects, inter alia, steel mills and forges.

Photos: DIAS Temperature Switch PYROSWITCH (JPG)

April 2012

Cost efficient DIAS Pyrometers PYROSPOT Series 42

Based on successful PYROSPOT Series 40 new, especially cost efficient pyrometers PYROSPOT Series 42 have been developed. The device type PYROSPOT DT 42L allows non-contact temperature measurements from -20 °C to 700 °C in the spectral range of 8 µm to 14 µm. Thus, these pyrometers are particularly suitable for measurements on non-metals or coated metals, paper and packaging, building materials, plastics and food. Especially for measurements on glass there is the device type PYROSPOT DT 42G with temperature range from 100 °C to 2500°C and a spectral range of 5 µm available. For the measurement of very high temperatures in the metal, ceramic and glass industry new pyrometers like PYROSPOT DS42N (600 °C to 2500 °C, spectral range from 0.8 µm to 1.1 µm ) and DG42N (250 °C to 1800 °C, spectral range 1.5 µm to 1.8 µm) are suitable.

All of the pyrometer PYROSPOT Series 42are housed in a rugged steel housing (IP 65) and have a temperature-linear current output 4 ... 20 mA. Different types of fixed optics allow spot sizes from 1.2 mm in diameter. On the device the emissivity can be adjusted manually. A wide range of pyrometer accessories is available such as brackets, holders, air purge unit, conduits and cooling jackets.

Photos: PYROSPOT Series 42 (JPG)

April 2012

Infrared camera series PYROVIEW compact+: new high-temperature InGaAs camera

A new device has been added to the new infrared camera series PYROVIEW compact+. The new camera PYROVIEW 320N compact+ allows non-contact measurement from 300 °C to 1200 °C, optional up to 2000 °C. As infrared sensor an InGaAs array is used with 320 x 256 pixels, which is operated in the spectral range from 1.4 µm to 1.6 µm. Because of this spectral range the emissivity influence on the temperature measurement accuracy is significantly lower compared with universal infrared camera with a spectral range of 8 µm to 14 µm. The online image transmission is realised via Ethernet with a frame rate of 100 frames per second.

A special feature of the PYROVIEW 320N compact+ compared with NIR cameras from other manufacturers is that it has a continuous measurement range of 300 ° C to 1200 ° C, allowing temperature measurements in environments with high temperature dynamics. Applications of the new infrared cameras are high-temperature measurements for process control and monitoring and quality control, for example, in metal, glass and cement industries.

Photos: PYROVIEW 320N compact+ (JPG)

April 2012

Quality assurance in the steel industry with DIAS infrared cameras

For the production of reinforced concrete steel bars are used to make the cement resistant towards occuring train and compressive forces. In order that the reinforcing steel has an appropriate strength and does not become brittle, it is important that it has a certain range of temperature that may not be exceeded nor underran. In order to detect this a DIAS infrared line camera type PYROLINE 128M with a special spectral range of 3 to 5 µm and a temperature range of 400 °C to 1200 °C was used. The camera was installed at a bridge over the conveyor belt. Thus access to the camera in case of maintenance purposes is assured ideally. The data will be sent via fiber optic cable to a PC in the control room to comply the hard electromagnetic requirement. Read the complete application report here (PDF).

Photos: Quality assurance in the steel industry with DIAS infrared cameras (JPG)