New Calex PyroUSB 2.2 Infrared Pyrometer for Demanding Applications from 45ºC to 2000ºC

New Calex PyroUSB 2.2 Infrared Pyrometer for Demanding Applications from 45ºC to 2000ºC from Calex Electronics Limited

By: Calex Electronics Limited  17/05/2011
Keywords: process control, Process control equipment, Industrial Process Control

The all-new PyroUSB 2.2 pyrometers detect infrared radiation at wavelengths of 2.0 to 2.4 microns. This allows much greater accuracy, and improved tolerance of optical obstructions or errors in emissivity setting, than longer-wavelength sensors. Model PU151LT2.2 is designed for measuring low-temperature targets from 45 to 300ºC. PyroUSB 2.2 sensors connect directly to a PC via a USB cable (included) and operate without the need for any additional hardware interface or power supply. As well as USB, the sensor also has a selectable 0 to 20 mA or 4 to 20 mA output (linear with temperature). This can be connected at the same time as the USB interface or independently. Models are available with temperature ranges of 45 to 300ºC, 250 to 1000ºC or 450 to 2000ºC. A smaller range can be set using the included CalexSoft software. CalexSoft is simple to install and requires no specialist knowledge to set up and use. It displays temperature numerically and on a simulated scrolling chart. Users can set the temperature range and emissivity, compensate for reflected energy, apply filtering and use peak or valley-hold processing to measure hot or cold objects on conveyors. The software may also be used to log measurements and pre-programmed to record at any time or date. Alarms can be set to warn users that the temperature is either too high or too low. The built-in OPC Server interface makes systems integration simple and affordable. The sensor itself is just 106 mm long by 18 mm diameter and made of stainless steel, sealed to IP65. A mounting nut is included; mounting brackets and a laser-sighting tool are also available. There are four optics to choose from. Medium and high-temperature models are available with well-defined 25:1 or 75:1 distance-to-spot size ratios, or close-focus optics, which focus on a 7.5 mm diameter spot at 500 mm distance. Low-temperature models are available with 15:1 optics. If the sensor is required to operate in a very high or low ambient temperature (less than 0°C or more than 70°C) it can be ordered with a water/air-cooled jacket. The sensor body temperature can be monitored from the PC to ensure it doesn’t exceed the ambient limits. For dusty environments, an air-purge collar can be fitted to keep the lens clean. 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 infrared temperature measurement.

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