SMT160-30 Smartec, SMT160-30 Datasheet - Page 8

• Manufacturer Part Number: SMT160-30
• Description: Smart Temperature Sensor
• Manufacturer: Smartec

Noise
The above mentioned figures are hard to measure, an accuracy of around 5 % is a reasonable
estimation. These figures only concern the sensor built in a TO-18 housing and not the TO-
92 nor the chip itself.
Time constants
The resolution is better than 0.005 °C. The standarddeviation of the noiselevel
(measured over a 20 ms. period) is below this 0.005 °C.
The time constants of the sensor is measured under different circumstances. To compare
this with other types of sensors the same kind of measurements were done. The time
constant is defined as the time required to reach 63% of an instananeous temperature
change.
condition
mounted in an alu block of a certain
temperature (mean value of different
measurements)
in a bath filled with oil that was
stirred
(mean value of different
measurements)
Moving air with a speed of about 3
m/s
- without heatsink
Moving air with a speed of about 3
m/s
- with heatsink
Non moving air
- without heatsink
Non moving air
- with heatsink
time constant
(sec) (TO18)
0.6
1.4
13.5
5.0
60
100