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ENGLISH
Chapter 11 Monitoring Temperature
11.1 Introduction
The body temperature is monitored by direct measuring mode with the temperature sensor of thermistor type. Very small
amount of constant current is applied to the temperature sensor to avoid self-heating, the voltage across the thermistor
is measured, and further converted to the temperature reading according to the temperature-resistance characteristic
for a specific type of thermistor. The temperature measuring circuit does the self-testing periodically to prevent false
reading when there is failure in hardware.
You can simultaneously monitor two temperature sites using the device, for specific model, only one channel temperature
is available.
11.2 Safety Information
Verify that the probe detecting function works correctly before monitoring. Unplug the temperature probe cable
from the T1 or T2 connector, and the monitor can display the message [T1 Sensor Off] or [T2 Sensor Off] and give
alarm tones correctly.
Make correct choice in setup menu for “KRK” and “YSI” series of temperature sensor used, since they have different
temperature-resistance characteristic (KRK thermistor has 10.000K ohms @25
o
C, YSI thermistor has 2.252K ohms
@25
o
C). Mismatching will cause wrong temperature reading or even out of range.
11.3 Making a TEMP Measurement
Please follow the corresponding methods to make temperature measurement according to the temperature transducer
you selected.
Connecting the thermal temperature sensor:
The temperature sensor is thermo-resistor type it needs time to respond the temperature change, so the accurate
temperature value displays after a while. The temperature sensor equipped may have different shape for measuring body
surface temperature or cavity temperature respectively.
Normal value for body surface: 36.5°C ~37°C;
Notes:
For body surface temperature probe, attach the TEMP sensor to the patient, generally if the TEMP sensor and skin
doesn’t contact closely, the measured value becomes lower, so for those who have requirement for temperature
monitoring, add a proper pad to the sensor and fix it with adhesive tape to make them contact firmly.
Especially for pediatric patient, they have more activities, pay more attention to the sensor fixing.
The TEMP sensor is designed for use with the specific patient monitor, which cannot be used as applied part to
other products.
The operator is responsible for checking the compatibility of the patient monitor and sensor type including cable
before use.
Incompatible components can result in degraded performance.