Calex has an innovative new range of compact infra-red pyrometers with built-in digital communications for easy systems integration
The new PyroBus series is designed to measure the temperature of inaccessible or moving objects and materials, from -20°C to 500°C, accurately and consistently, with an outstanding response time of 240 ms.
The built-in RS485 Modbus RTU interface provides the maximum, minimum, average and
instantaneous temperature of the material or process being monitored. It also provides the internal temperature of the sensor to ensure that each one is being operated within the correct ambient temperature limits and so prevent damage caused by overheating. Users can adjust the emissivity setting for each sensor, compensate for reflected energy, apply filtering to fluctuating temperatures and use peak or valley-hold processing to measure hot or cold objects on conveyors. Up to thirty
two sensors can be installed on a single multi-drop network.
All PyroBus sensors are fitted with precision Germanium lenses for accurate optics. Model PB21 has 2:1 optics making it suitable for most applications where the sensor can be mounted close to the target. Model PB151 is designed for small or distant targets and has an optical resolution of 15:1. Model PB301 is designed for very small or distant targets and has an optical resolution of 30:1.
Each sensor is just 18 mm diameter by 103 mm long and is 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.
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 built around it.
For dusty environments, such as in paper or textile mills, an air-purge collar can be fitted to keep the lens clean.
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