3B Scientific Temperature Sensor, TC – K - Manual (Page 2)

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments
© Copyright 2010 3B Scientific GmbH
5. Operation
• Connect the thermocouple sensor to the sensor
box and bring it into contact with the test sur-
face.
• Wait for temperature compensation to com-
plete before taking readings.
6. Applications
Measurements involving very low temperatures in
liquified gases
Measuring temperature at points that are ex-
tremely difficult to access on account of the ex-
periment set-up – this is facilitated by a probe
1.20 m long and a small diameter of only 1.5 mm.
Measurements conducted in the hot region of a
flame without damaging or destroying the tip of
the sensor
7. Sample experiments
Experimental demonstration of Newton’s law of
cooling
Fig. 1: Experimental demonstration of Newton’s law of
cooling
The type K immersion sensor U11854 is used in this
experiment.
• Connect the equipment as shown in Fig. 1
above. Switch on the 3B NETlog
TM interface and
wait for the interface to automatically detect
and identify the sensor.
• Prepare the interface for recording readings
over a time period of 10 hours, i.e. every
0.36 s, a total of 100,000 readings.
• Fill approximately half the vessel with boiling
water (100°C approx.).
• Subsequently, start taking readings. After com-
pleting the experiment, plot the cooling curve.
Fig. 2: Reduction of temperature over time