Adjusting The Response Time - KLEIBER 217 R - LWL Betriebsanleitung

7 Operation of the pyrometer
How to find out correct emissivity:
1. First measure the real temperature of measuring object with a contact thermometer e.g. thermocouple or
resistance probes. The "black" temperature (spectral temperature) measured with a pyrometer adjusted
to emissivity = 1.0 usually gives a measuring value differing to real temperature because of the real
emissivity of < 1.0. The value given by the instrument usually will be less than the real temperature. The
emission ratio of most materials depends on temperature as well as wave length being measured.
2. You can get a correlation of the temperature scales, if you adjust the pyrometer at the exact temperature
with the help of the emissivity value.
After adjusting the emissivity factor through a correlation measurement you can now measure
temperatures for the calibrated temperature range at an accuracy mentioned in the technical data.
IMPORTANT:
Please pay attention if you take over table values of emissivity to give the value of emissivity factor at a
certain wave length. Adjusting emissivity following table values is not as exactly as adjusting following
a comparing measurement.
Changing emissivity
The emissivity can be adjuested at the front side of the panel instrument case with the helf of the emissivity
potentiometer stepless between 0.1 and 1.

7.3 Adjusting the response time

The response time is the time interval in which the measuring temperature must line up with a precipitous
change at least in the measuring field, in order that the output value of the pyrometer reaches a given measured
value.
If the potentiometer for response time is set to "0" the pyrometer works at its standard response time of 180 s.
Other response times up to 2 s can be set in order to level out temperature drifts in a given time by averaging.
14 KLEIBER 217 R - LWL