assalamualaikum wbt..
hye guys for this post we will focusing on the testing with the Humidity and temperature sensor before im install it in our system...Mutimeter has been used to determine the value produce by both sensor and the it will compare with the datasheet
Temperature
sensor and Humidity sensor
For this project we have
two inputs which is humidity and temperature sensor. Both input will affected
certain outcome of the output. The measured data need to be compared with the
datasheet to ensure that sensor will produced the expected outcome.
Result:
Thermistor sensor
Temperature
(ºC)
|
R1 (Ω)
|
R2 (Ω)
|
Datasheet(V)
|
Measurement
(V)
|
Measurement
(ºC)
|
0
|
32554
|
10k
|
1.2
|
1.4
|
0
|
10
|
19872
|
10k
|
1.5
|
1.7
|
15
|
20
|
12488
|
10k
|
2.2
|
2.5
|
23
|
30
|
8059
|
10k
|
2.6
|
2.8
|
26
|
40
|
5330
|
10k
|
3.8
|
3.5
|
38
|
50
|
3605
|
10k
|
4.6
|
3.9
|
48
|
60
|
2490
|
10k
|
4.8
|
4.2
|
54
|
70
|
1753
|
10k
|
4.9
|
4.4
|
66
|
80
|
1256
|
10k
|
5.2
|
4.6
|
70
|
Thermistor sensor Test
Graph Voltage Output from datasheet
and Measurement (Thermistor)
Humidity sensor Module (HSM-20G)
Humidity
(%RH)
|
Datasheet (V)
|
Measurement (V)
|
10
|
0.74
|
1.02
|
20
|
0.95
|
1.20
|
30
|
1.31
|
1.50
|
40
|
1.68
|
1.82
|
50
|
2.02
|
1.98
|
60
|
2.37
|
2.36
|
70
|
2.69
|
2.67
|
80
|
2.99
|
2.98
|
Humidity sensor Test
Graph Voltage Output from datasheet and Measurement (Humidity)
From the result obtained, it shows the
output of both sensors based on the value the datasheet and measurement has
done practically. Both value has shown a different when measured but not to
significant between them.
For thermistor sensor, it was tested based on several conditions
at low and high surrounding temperature in the morning and evening. For this
sensor also, it was tested the temperature reading for measurement. The value
obtained from the measurement was compared with the value from datasheet. For thermistor,
it will use the voltage divider formula:
For Humidity sensor, it will use this formula to calculate
output.
This sensor will be tested
based on certain range in order to compare the value from datasheet with
practical measurement. From this work, the values of practical measurement are
quite close to the theoretical
.gif)
