Non-contact measurement & inspection
temperature sensors (pyrometers) with a new ultra-high speed version that offers a 300 µs response time (90 µs exposure time) on metal and non-metal objects with a temperature of zero to 500°C. In high speed processes with very short
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cycle times, requirements for pyrometers used for temperature measurements are extremely challenging. Previously, the combination of high speed, low temperature and short wavelength was never realised and there was always a compromise on at least one of the three. The new thermoMETER CTM-4SF10-C3 infrared temperature sensor (CTM-4) from Micro- Epsilon uses a new detector that measures within the spectral range of 2.2 to 6.0 µm and is therefore ideal for low temperature (0- 500°C) measurements on metals, metal oxides, ceramics and plastics, as well as materials with an unknown or changing emissivity. The CTM-4 is Micro-Epsilon’s fastest
infrared pyrometer to date. While the previous models in the CT series operate in the millisecond range, the CTM-4 outputs a measured value every 300 µs and takes just 90 µs to acquire a stable measurement value. A spectral wavelength range of 2.2 to 6.0 µm supports the measurement of various objects including metals and non-metals (e.g. ceramics and plastics). For fast parameter set up, the CTM-4 provides an integrated USB interface. With a sensor head diameter of just 14mm and a length of 28mm, the CTM-4 can be easily installed in restricted spaces on a machine or production line. The pyrometer can be used in ambient temperatures up to 70°C without cooling. The remote electronics unit (controller) is connected to the sensor head via a cable, which can be up to 15m in length. Important parameters can
SENSOR OFFERS ULTRA-hIGh MEASURING SpEEDS ON METAL AND NON-METAL OBjECTS
be entered directly via three keys and an illuminated display on the controller. An integrated USB interface enables the CTM-4 to be connected directly to a PC, where all settings can be fine-tuned using the CompactPlus Connect software. Data capture and recording are also possible using the software. Other serial interfaces or an Ethernet interface are also available as options. Two scalable analogue outputs and three programmable I/Os are available as standard for connecting the CTM-4 to the user’s own process environment. Glenn Wedgbrow, business development manager at Micro-Epsilon UK comments:
BIG BENEFITS IN MINIATURE LASER DISTANCE SENSORS
manufacturers to meet the ever-present demands for optimum efficiency. The new miniaturised OM20 and OM30 laser sensors available from Baumer are a good example being perfectly suited to handling precise measurement tasks, despite their ultra-compact size. These sensors are distinguished by their ability to provide reliable,
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surface-independent measurements with a repeat precision of up to 1µm combined with an impressive measurement speed of up to 5 kHz despite their miniature size. They measure just 37mm x 35mm x 13mm. For applications requiring measurements on structured surfaces such
as processed metal or wood, the OM30 option is an ideal solution thanks to its line beam shape with a range of up to 550mm. The standardised IO-Link interface allows for easy integration into control systems along with simple parameterisation of the sensor. Apart from providing standard process data, such as the distance
Instrumentation Monthly June 2021
he development of miniature laser distance sensors which provide exceptional measurement performance are a vital component in today’s more compact machines and systems, helping
“If speed matters in the customer’s production process, the thermoMETER CTM-4 is our fastest infrared temperature sensor yet. We see numerous temperature measurement applications for the pyrometer, including high speed, high volume production such as PET preform temperature monitoring, assembly and packaging processes that involve hot glue dispensing, high speed traffic and rail safety applications where hot box detection is required, as well as the more obvious processing of metals and metal oxides, ceramics, plastics and other materials with unknown or changing emissivity.”
www.micro-epsilon.co.uk
value or the signal quality, the sensors offer additional data including the measurement rate and the illumination reserve of the sensor. The latter can also be used as an indicator for the soiling of the sensor, helping to support preventative maintenance regimes. The precise and reliable performance characteristics of these new miniature sensors apply across the entire Baumer OM sensor range giving users the confidence of unrivalled measurement, compared to other options available. This is particularly important in applications where the most challenging conditions prevail such as poor ambient light, or involve dusty environments. In addition an automatic light adaption function which can power itself
up means the sensors can see through dark or dusty environments and receive a stable reflection back. Finally, reliable results and measurements can be achieved, even on demanding surfaces, thanks to the extra fine line beam and stable measurement signals, thanks to functions such as automatic exposure control and adjustable filters.
www.baumer.com
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recision sensor manufacturer Micro- Epsilon has extended its thermoMETER CT series of non-contact infrared
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