New multi-functional CellaTemp PA pyrometer from Keller HCW

A pyrometer consists of the following basic modules: optics, signal recording, signal processing, handling and measured value output. With development of the new CellaTemp PA pyrometer, improvements have been achieved in all these areas.

Modular structure

The CellaTemp PA is provided with two analogue outputs. The measured variables of the outputs can be defined by the operator himself. For example, parallel to the temperature of the measured object, the inside temperature of the device can also be indicated. Alternatively, one output can be configured as an input in order to analyse the kiln temperature as a correction value. Furthermore, two switching outputs can be combined with the measured values in several ways or can be used as switching inputs.

Various new ­configuration parameters

Another special feature is the determination of an output signal correlating to the emission level. In belt coating plants the flow rate can be adjusted depending on the heat absorption capacity.

Moreover, further optimizations were achieved in the separate functional modules. With the introduction of cemented lens systems, the optical imaging features have been improved. Because of this, the measurement inaccuracy as a function of distance (Size of Source Effect) is halved.

With more sensitive sensors, extremely low-noise amplifiers and a 21-bit signal transformation, the CellaTemp PA reaches an inner resolution of 0.01 K. At the same time, measuring voltages of up to 2 000° C are possible. The measuring ranges of 0 to 3 000° C are covered by three basic components.

Five interchangeable objectives are available, depending on the measuring distance and the object size. These objectives can be adjusted continually and precisely to distances between a few millimetres and several metres. Even the smallest object from 0.3 mm can be measured. The new multi-functional CellaTemp PA pyrometers are available with through-the-lens sighting for marking the measuring spot or alternatively with a laser.

The large key panel with LED display is very easy to use. The measured values can be easily read, even from large distances away, i.e. several metres away. All configuration parameters can be adjusted directly on the pyrometer keyboard. Alternatively, thanks to the USB interface, the CellaTemp PA can be configured on a personal computer. The software for parameterization and measured value outputs have already been integrated in the pyrometer. Therefore the CellaTemp PA is able to communicate with all established Windows operating systems, irrespective of the language. At the same time, a network-compatible RS 485 interface is available.

With the development of CellaTemp PA, Keller HCW GmbH, the well-known manufacturer of non-contact temperature measurement devices, has once again achieved considerable technological progress.