6 September 2006 -- The new Convir VL miniature infra-red temperature sensor from Calex Electronics is designed to offer maximum flexibility in the smallest possible package. This advanced sensor has an ultra-compact sensing head for use in the most confined of spaces, and a separate electronics unit with a backlit LCD display. The VL can measure temperatures from -40C to 700C with a response time of just 180ms.
It has a narrow 10:1 field of view, and adjustable emissivity, so can be configured to measure most materials.
Each unit offers a choice of either 0/4 to 20mA, 0 to 5V or type J or K thermocouple outputs allowing them to be used with virtually all process control instrumentation.
Under the lid of the electronics enclosure are controls which are used to adjust the configuration parameters of the sensor and set the temperature range and response time.
From here the analogue outputs can also be configured and maximum/minimum readings switched on or off.
To compliment the range of analogue outputs the VL also provides a digital relay output, the temperature level and hysteresis of which can be adjusted with the electronics module.
The VL also has an RS-485 interface for connection to a PC, and can be interrogated using the UPP (Universal Pyrometer Protocol).
The compact sensing head of the VL is made of stainless steel and is sealed to IP65.
It can operate in ambient temperatures up to 85C without cooling, or 200C with air-cooling and purging accessories.
For further information, please contact Geoff Chapman at Calex.
