HTS2030SMD Measurement Specialties Inc., HTS2030SMD Datasheet - Page 5

• Manufacturer Part Number: HTS2030SMD
• Description: Industrial Humidity Sensors -60 to 140 Oper Temp 10 VAC Supply Volt
• Manufacturer: Measurement Specialties Inc.

Specifications of HTS2030SMD

• Rh Range: 0 % to 100 %
• Rh Accuracy: +/- 1 %
• Supply Voltage: 10 VAC
• Temperature Range: - 60 C to + 140 C
• Product: Humidity Sensors
• Range: 0 % RH to 100 % RH
• Response Time: 10 s

HTS2030SMD – Temperature and Relative Humidity Sensor
•
Concerning the temperature sensor of the HTS2030SMD, the following measuring method described below is
based on a voltage bridge divider circuit. It uses only one resistor component (Rbatch) at 1% to design
HTS2230 temperature sensor interfacing circuit. Rbatch is chosen to be equal to NTC @25°C to get: Vout =
Vcc/2 @25°C. There are two proposal configurations: If Rbatch is connected to Vcc and NTC to Ground, it leads
to a negative slope characteristic (Pull-Down Configuration). For a positive slope, Rbatch and NTC resistors
have to be switched (Pull-Up Configuration).
Temperature conversion: look-up table (Vcc=5Vdc)
HTS2030SMD HPC055_G
Temperature Interface circuit
V
NTC 10k @25°C
OUT
HTS2030SMD
(
mV
Pull-Up Configuration
)
Temperature Resistance Pull-Up Configuration Pull-Down Configuration
=
Vcc
R
VCC (mV)
(°C)
batch
-40
-30
-20
-10
10
20
25
30
40
50
60
70
80
90
99
0
(
mV
(
Ω
)
Rbatch
10k
* )
+
NTC
NTC
262960
144790
82923
49204
30029
18959
12280
10000
8178
5575
3874
2720
1960
1432
1067
830
(Ω)
Vout (mV)
HTS
HTS
2030
2030
SMD
SMD
www.meas-spec.com
(
(
Ω
Ω
Vout (mV)
)
)
4817
4677
4462
4155
3751
3273
2756
2500
2249
1790
1396
1069
819
626
482
383
5/8
V
OUT
(
mV
Pull-Down Configuration
)
Vout (mV)
Rbatch
=
1249
1727
2244
2500
2751
3210
3604
3931
4181
4374
4518
4617
183
323
538
845
10k
R
batch
VCC (mV)
Vcc
(
Ω
)
(
mV
+
HTS2030SMD
NTC 10k @25°C
NTC
* )
Vout (mV)
R
HTS
batch
2030
(
Ω
SMD
July 2009
)
(
Ω
)