Lumasense-technologies ISR 6 Advanced Manuel d'utilisateur télécharger pdf (Page 25)

ISR 6 Advanced Manual Settings / parameter descriptions · 25

AUTO The AUTO mode is used for discontinuous measuring tasks. For example,

when objects are being transported on a conveyer belt and pass the

measuring beam of the pyrometer only for a few seconds. In this case, the

maximum value for each object has to be obtained.

With the AUTO mode, the maximum value is stored until a new hot object

appears in the measuring beam. The temperature, which has to be

recognized as “hot” is defined by the low limit of the adjusted sub range.

The stored maximum value will be deleted once the temperature of the new

hot object exceeds the low limit of the sub range by 1% (transition in

positive direction) or by at least 2 °C. This is also valid if the sub range equals

the basic range.

HOLD The HOLD function allows you to freeze the current temperature reading at

any moment. This feature is activated using an external switch that has been

connected between connector pins J and K.

The temperature reading will remain frozen as long as the contact remains

closed.

4.7 Analog Output

The analog output has to be selected according to the signal input of the connected instrument

(controller, PLC, etc.). If 4 to 20 mA is set, the analog output gives 3.9 mA for temperatures

below lower range limit.

Note: Settings for Analog Output : 0 to 20mA or 4 to 20mA

4.8 Relative Signal Strength

Relative signal strength stands for the product of emissivity, surface coverage, and transmission

of the material between the object and the pyrometer. Refer to Section 4.8 for more

information on Relative Signal.

4.9 “Dirty Window” Warning

The ISR 6 Advanced pyrometers are equipped with a warning level “dirty window” monitoring

system. A correct temperature measurement might be impossible if the ratio pyrometer is

working at a too low signal level. To avoid these wrong measurements in advance, a warning

signal can be set to a certain contamination level. A built-in relay switch can be used to switch to

a warning signal when the incoming radiation becomes too low.

The warning level can be set between 0 and 99%. 0% means the “dirty window” warning

system is switched off (factory setting) and the relay can perform the function external clearing

of maximum value storage, when it is activated (see section 4.6.2 Clear Time Settings).

Note: Settings for “Dirty Window” Warning: 0 (off) to 99%.

4.10 Minimum Intensity Switch-Off Level

The minimum intensity switch-off level is a function that is used to avoid measuring errors

caused by signals which are too low. This may e.g. be caused by a dirty viewing window, dust in

the field of view, or when the spot is not filled by the measuring object.

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Lumasense-technologies ISR 6 Advanced Manuel d'utilisateur Page 25