Medoc TSA 2001, Technical Reference Manual

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Q-Sense Technical Reference Manual
Proprietary 18 of 188
1.5.3 Equipment Classification
 Degree of protection against electric shock: Class I
 Type of protection against electric shock: BF
 Type of Operation: Continuous
 Protection against ingress of liquids: Not protected against ingress of liquids
 Ordinary equipment.
 Computer must comply with IEC 950 - EN 60950 - UL 60950.
1.6 System Protection
1.6.1 System Self-Test
Upon start-up the system performs a self-test in which system sensors are being tested. If a
malfunction is detected, an appropriate message is displayed and the system cannot operate
until that malfunction is resolved.
1.6.2 Temperature Safety Mechanisms
Several safeguard mechanisms have been implemented in the system to safeguard against
extreme temperatures and to protect the tested subject and the unit.
Software protection mechanisms include:
 Temperature upper and lower limits – In normal operation, Thermode temperature will
always be within these limits.
 Time duration limits – Thermode temperature is limited in duration. If the Thermode
temperature maintains a specific temperature (or above) for a longer period of time
then specified for that temperature, the system will go into Safe Mode.
 Safe Mode – a protective state of the system in which it is not possible to run tests. In
any case of suspected malfunction or if any modification is made to system hardware
settings, system will remain in safe mode until a system Self-Test is performed.
Hardware protection mechanisms include:
 If the Thermode temperature reaches 57  C an analog circuit overrides the system and
lowers the temperature gradually.
1.6.3 Thermode Detection
The system automatically detects that a Thermode is missing, and disables it in order to
protect both system and user.