Product category:
Temperature measurement: IR techniques
News Release from: Calex Electronics | Subject: PyroUSB
Edited by the Processingtalk Editorial
Team on 22 February 2008
New PyroUSB non-contact IR temperature
sensor
Calex is delighted to announce the new PyroUSB non-contact infra-red temperature sensor, using USB PC connection, operating without the need for any additional hardware interface or power supply
This all-new sensor connects directly to a PC via a USB cable (included) and operates without the need for any additional hardware interface or power supply The CalexSoft software (also included) is simple to install and requires no specialist knowledge to set-up and use
This article was originally published on Processingtalk on 31 Aug 2004 at 8.00am (UK)
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Users can set the temperature range and emissivity, compensate for reflected energy, apply filtering to fluctuating temperatures and use peak or valley-hold processing to measure hot or cold objects on conveyors.
The software may also be used to record measurements at any interval from 1 second to 1 week and pre-programmed to start and finish at any time or date.
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Audible/visual alarms can be set to warn users that the temperature is either too high or too low.
The built-in OPC Server interface allows communication between the sensor and any other equipment with OPC Client capabilities, making systems integration simple and affordable.
In addition to the USB interface, the sensor is equipped with a 2-wire, 4-20 mA output, which is linear with temperature.
This output can be connected at the same time as the USB interface or independently.
The PyroUSB sensor is capable of measuring temperatures accurately and repeatably from -40C right up to 1000C.
If a smaller range is required this can be set using the CalexSoft software.
The sensor itself is just 106mm long by 18mm diameter and made of polished stainless steel, sealed to IP65, making it ideal for food and pharmaceutical applications.
It is held in place by a mounting nut (included).
Fixed and adjustable brackets are offered to simplify mounting and a laser-sighting tool is available to assist in the sighting of the sensor.
The high-quality Germanium lenses used by Calex produce very well defined optical paths.
There are three to choose from: the first provides a field of view with a distance to spot size ratio of 15:1.
There is also a lens with a 30:1 ratio and one which focuses on a 5mm diameter spot at 100mm distance, which is ideal for small targets such as electrical components.
If the sensor is required to operate in a very high or low ambient temperature (less than 0C or more than 70C) it can be ordered with a water/air-cooled jacket built around it.
The temperature inside the sensor can also be monitored from the PC to make sure it doesn't exceed the ambient limits.
For dusty environments, such as in paper or textile mills, an air-purge collar can be fitted to keep the lens clean.
Built-in adaptive filtering provides a very stable signal without compromising the remarkable 250ms response time, so there is no need to sacrifice a fast response in order to achieve a stable reading.
PyroUSB sensors are RoHS compliant and conform to EN 61326-1:2006 for EMC.
They are designed and built by Calex Electronics in the UK, a company with more than 30 years experience of non-contact infra-red temperature measurement.
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