New infrared temperature sensors for applications in photovoltaic and semiconductor industries

The Optris GmbH presents a new innovative range of infrared sensors and imaging systems especially created for applications ranging from silicon and wafer production, to photovoltaic cell and module. These infrared thermometers are applicable in silicon - based solar cells production as well as in the very new style based on III/V, II/VI and I/III/VI materials. Optris offers efficient solutions for online process control to reach high product quality, productivity and cost reduction.

The optris CT1M, CT2M and CT3M are high temperature sensors perfectly adapted for noncontact measurement of wavelength from 1,0 µm, 1,6 µm and 2,3 µm used in special steps of wafer and pre-product generation with temperature ranges from 50°C to 1800°C. These sensors are characterized by their small sensor head size with 14 mm diameter and 28 mm length and their attractive price. If an additional aiming of the measuring area is required, t he double laser aiming with two laser beams marks at any distance the real spot size up from 0,45 mm to 0,7mm in order to avoid wrong measurements. The cost – performance ratio is excellent. Most common pyrometers are using center laser beam through the lens sighting or video sighting just marking the center and the roughly, but not the real spot size.

During the coating and lamination process of cells and modules you have to ensure a homogenous coating of surfaces using high temperature resolution accuracy. The optris CS m hs sets a new benchmark in low noise IR-thermometry. It is suitable for relative measurement of smallest temperature differences of 0,025°C. It is using a new type of infrared detector with an extra high sensitivity. The thermal and electronic design of the optris CS m hs is ensuring a very low ambient drift. It contains no moving parts like chopper wheels or similar. Vacuum sealed heads and customized vacuum applications allow an adaptation in and on reactors and production chambers. Typical applications of such type of IR sensor can be found in semiconductor processing and high quality glass production. In the processing of modern products like solar panels or TV flat screen displays and monitors a high homogeneity of special coatings on glass and other substrate is essential needed. The optris CS m hs has stainless steel housing and very compact dimensions: diameter of 30 mm and a length of 50 mm. It fits in narrow spaces in all industrial environments.

The jointing process from solar cells to solar modules requires a careful treatment of the cells during soldering. The optris PI Infrared Imager is a full radiometric thermographic device, showing temperature images and profiles of the target area to be observed. It is a new state of the art thermal imager with ready to use USB 2.0 interface for real-time thermography with 100 Hz frame rate - up to 20 m cable length. The measurement temperature ranges of -20...100°C, 0...250°C and optional 120...900°C are switchable to adapt the imager to the application needs. With the optris PI the customer can optimize careful heat treatments and speed of the process.

All optris devices from the optris CT series are equipped with the monitor box. You can easily see the temperature, program the sensor and read out the analog signals like 0/4-20mA, 0-5/10V, thermocouple type K or J. Optris provides you for all sensors of the CT series integrated digital interfaces like Profibus DP, CAN open, USB, RS232, RS485 or Ethernet (optional).

The software PI connect includes a recording function with radiometric video, snap shot, an analysis and post processing of infrared images and videos. It offers a complete set up of parameters and remote control of the infrared imager. The software PI Connect offers different colour palettes like iron, rainbow, black-white and black-white inverted.

The technology company Optris GmbH is specialized in the development, production and sales of noncontact infrared thermometers. The product range comprises online and handheld temperature sensors as well as online infrared cameras and calibration sources.

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