HTF3226LF Measurement Specialties Inc/MEAS France, HTF3226LF Datasheet - Page 4

• Manufacturer Part Number: HTF3226LF
• Description: MODULE RH TEMP FREQ OUT JST CONN
• Manufacturer: Measurement Specialties Inc/MEAS France

Specifications of HTF3226LF

• Output Type: Frequency, NTC Thermistor
• Sensor Type: Humidity and Temperature
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

HTF3226LF - Temperature and Humidity Module
TEMPERATURE SENSOR
•
Depending on the needed temperature measurement range and associated accuracy, we suggest two methods to access to
the NTC resistance values.
material parameter β in reality also depend on temperature. So this approach is suitable for describing a restricted range
around the rated temperature or resistance with sufficient accuracy.
approaches (e.g. the Steinhart-Hart equation) are used or the resistance/temperature relation as given in tabulation form.
The below table has been experimentally determined with utmost accuracy for temperature increments of 1 degree.
Actual values may also be influenced by inherent self-heating properties of NTCs. Please refer to MEAS-France Application
Note HPC106 “Low power NTC measurement”.
•
HTF3226LF HPC053 Rev E
Temp
(°C)
-30
-29
-28
-27
-26
-25
-24
-23
-22
-21
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
For practical applications, a more precise description of the real R/T curve may be required. Either more complicated
The exponential relation only roughly describes the actual characteristic of an NTC thermistor can, however, as the
Typical temperature output
Temperature look-up table
Resistance
144790
136664
129054
121925
115243
109030
103115
97565
92354
87460
82923
78581
70655
67039
63591
60381
57356
54503
51813
49204
46767
44467
42296
40247
38279
36455
34731
74497
(Ω)
Max Deviation
16636
15444
14343
13325
12383
11516
10705
9953
9257
8612
8020
7463
6947
6468
6023
5606
5222
4865
4533
4225
3932
3662
3411
3177
2960
2756
2568
2393
(Ω)
Temp
(°C)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
-2
-1
0
1
2
3
4
5
6
7
8
9
R
R
T, T
β
e
T
N
Resistance
N
33100
31557
30029
28627
27299
26042
24852
23773
22708
21698
20739
19829
18959
18128
17338
16588
15876
15207
14569
13962
13384
12834
12280
11777
11297
10840
10404
10000
(Ω)
NTC resistance in Ω at temperature T in K
NTC resistance in Ω at rated temperature T in K
Temperature in K
Beta value, material specific constant of NTC
Base of natural logarithm (e=2.71828)
Max Deviation
R
T
2230
2078
1932
1799
1675
1560
1452
1355
1261
1174
1093
1017
www.meas-spec.com
946
879
817
759
705
654
607
563
522
484
447
413
382
353
325
300
(Ω)
=
R
N
4/6
∗
e
Temp
(°C)
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
β
(
T
1
−
T
1
N
Resistance
)
9600
9218
8853
8506
8178
7866
7568
7283
7011
6734
6484
6244
6015
5796
5575
5373
5180
4995
4817
4636
4473
4316
4166
4021
3874
3737
3606
3481
(Ω)
Max Deviation
300
300
299
297
296
294
292
290
287
284
281
278
275
271
267
264
260
257
253
248
245
241
237
233
229
225
221
217
(Ω)
Temp
(°C)
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Resistance
3360
3237
3126
3019
2917
2819
2720
2629
2542
2458
2378
2304
2229
2158
2089
2022
1960
1898
1839
1782
1727
1673
1622
1573
1526
1480
1432
(Ω)
Max Deviation
April 2008
213
208
204
200
197
193
189
185
182
178
175
171
168
165
161
158
155
152
149
146
143
140
138
135
132
130
127
(Ω)