Shini Group
Technology & Marketing Dept
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Shini/CSC-TM
2013-11 zh-cn Shini product repair manual.doc
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4. Temperature Controller TU-01
4.1 Applicable Models
SHD-U
SDL-U
SD-H
SCD
SDD
4.2 Products Information
Temperature controller TU-01 is manufactured by Cosmosonics, Thermocouples are
manufactured by SHINI.(For our products after 2013)
4.3 Working Principle
Working principle of thermocouples:
Two different conductors(named thermocouple wire and hot electrode) are
connected to the circuit, when the temperature is not same at engagement point, an
electromotive force is generated in the circuit, which is called thermoelectric effects,
and the electromotive force is called thermoelectric force. Thermocouple measure
temperature through the principle, among them, direct used to measure medium
temperature end is called working end(also called measuring end), the other end is
called cold end(also called compensating end);cold end connects with monitor and
associated instruments.
Working principle of microcomputer board:
The temperature signal which are measured by thermocouple transforms into analog
signal, transfers to a microcomputer chip through input circuit, after the process, into a
digital signal, the executive module is controlled by the output circuit to obtain
accurate temperature control performance.
4.4 Alarm Exclusion
4.4.1 E-01/Temperature Line Breaking Alarm E-01
When the alarm occurs, corresponding thermocouple wire breaking alarm
indicator of control panel lights, LED digital display area shows the fault code.
After the alarm occurs, you need to check whether temperature line is
disconnected first, if not the controller can be judged abnormal.
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