The PyroCouple M series from Calex Electronics is a range of high quality, low cost, miniature infrared temperature sensors with separate electronics. They are capable of measuring temperatures in the range -20°C to 500°C and are available with either a current, voltage or simulated thermocouple output.
The miniature sensing head measures just 18mm diameter x 45mm. It is made of stainless steel, sealed to IP65, and will operate in very high ambient temperatures without extra cooling. This makes the PyroCouple M Series ideal for applications where there is only a small amount of room available to mount the sensor or the ambient temperature around the sensing head is higher than normal.
The sensing head 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. For dusty environments, such as in paper or textile mills, an air-purge collar can be fitted to keep the lens clean.
The cable which connects the sensing head to the electronics module is immune to electromagnetic interference and is not affected by handling or flexing.
The electronics module measures 98mm x 64mm x 34mm. It is made of die-cast aluminium, sealed to IP65, and will operate in ambient temperatures up to +70°C. It is powered from a 24 VDC (28 VDC maximum) power source.
The emissivity setting is fixed at 0.95, making the PyroCouple M Series suitable for the majority of applications where the target is made of a non-reflective material such as paper, plastic, rubber, cloth, food etc. or it can be used to measure metals that are painted, anodised or oxidised.
There are three optical ranges to choose from. Model PCM21 has 2:1 optics (the ratio of the target distance to the measurement spot size) making it suitable for most applications where the sensor can be mounted close to the target. Model PCM151 is designed for small or distant targets and has an optical resolution of 15:1. Model PCM301 is designed for very small or distant targets and has an optical resolution of 30:1.
Built-in adaptive filtering provides a very stable signal without compromising the remarkable 250 ms response time, so there is no need to sacrifice a fast response in order to achieve a stable reading.
PyroCouple M sensors are RoHS compliant and conform to EN 61326-1:2006 for EMC.