KROHNE OPTITEMP TRA-TCA Plus EN - Manual (Page 40)

6
SERVICE
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OPTITEMP TRA/TCA PLUS
www.krohne.com 01/2012 - 4000630301 - MA OPTITEMP TRA/TCA Plus R01
Service
6.1 Replacing the electronics
When it comes to industrial thermometers for advanced requirements, it is only possible to
replace an electronic component if there is a temperature transmitter or, if applicable, a head-
mounted display. Consult the handbook for the temperature transmitter or, if applicable, the
head-mounted display to learn what you need to take into consideration when replacing the
electronics.
6.2 Cleaning and maintenance
As a rule, the industrial thermometers for advanced requirements require no cleaning or
maintenance. However, depending on the conditions of use and the thermal and mechanical
load, they can age. This is true of both measuring inserts with Pt100 RTDs and measuring inserts
with thermocouples.
As a result of the ageing process, the characteristics ("characteristic curve") can change. That
means that the relationship between the electrical resistance (measuring insert with Pt100 RTD)
or the thermovoltage (measuring insert with thermocouple) and the temperature changes. In
this case, calibration shows whether any deviations in measurement values are still within
permissible tolerances.
6.3 Spare parts availability
The manufacturer adheres to the basic principle that functionally adequate spare parts for each
device or each important accessory part will be kept available for a period of 3 years after
delivery of the last production run for the device.
This regulation only applies to spare parts which are subject to wear and tear under normal
operating conditions.
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