2009 by ELTRA GmbH Germany – July 2009 – Service Manual Thermostep
Page 32
3.
Service
3.1
External Temperature measurement
Required tools:
Thermocouple (1,5 mm diameter)
Temperature meter
Notepad
The external temperature measurement is done to control if the shown temperature at the
software is equate to the real temperature at the furnace.
For the measurement insert the thermocouple at the device at the upper heating element
during analysis. The thermocouple has to be connected with a temperature meter and the
temperature inside the furnace can be determined. Variations between shown and measured
temperature can be rectified via fuction
Temperaturecalibration
(see Operation Manual:
Form –
Configuration
). At the start of this process the cover of the furnace has to be open.
a.)
Note the temperature that is shown under T
Ref
at Form –
Heater
.
b.)
Open and remove the upper right side panel and the isolation plate behind.
Fig. 3.1.1: RHS – Removed left, upper side panel and isolation plate (red arrow: external thermocouple)
c.)
Next to the internal thermocouple there is a small ceramic tube via this the external
thermocouple can be inserted to the furnace. Move the thermocouple until visible
inside of the furnace (through the ceramic tube) and orientate at the arrangement of the
internal thermocouple to get an excat determination as possible.
d.)
Start a new analysis.
e.)
Check the temperature-course during analysis and note the shown and the determined
temperature data at the single stages.
Alternatively the instrument can be heated to the selected setpoint manually to
measure the temperature externally.
