User manual

OPERATION MANUAL
Technical changes reserved
0141 0316-198 16.06.2016
Digital Humidity-Temperature Module HYT939
with I²C-Interface
DescriptionDescription
Features
• Dew resistant
• Temperature compensated
• I²C interface
• Low hysteresis
• Compensated linearity error
• Low temperature drift
• Easily replaceable
Applications
• Mechanical engineering
• Environment technology
• Plant engineering
• Medical devices engineering
• Dryer systems
• Building automation
• in connection with internal bus systems
Description
Accurately calibrated, digital humidity-temperature module with I²C
interface. The sensor is dew resistant, temperature compensated,
shows a very low hyteresis, negligible long term drift and linearity
errors. Up to 112 addresses on the same bus line. It is mechanically
robust, easy exchangeable and chemically resistant. The module
features a high quality micro system on ceramic substrate using a
polymer capacitive humidity sensor. The TO-39 housing with steel
mesh lter is suitable among others for the use in medical devices and
dryer systems.
Attention
Please avoid extreme mechanical and inappropriate exposure.
The device/product is not suitable for potential explosive areas and
medical-technical applications.
Technical data
Humidity measurement
Measuring range humidity 0 ... 100 % RH
Accuracy humidity ± 1,8 % RH at +23 °C
(0 % RH to 90 % RH)
Reproducibility 0 .. 10 % RH (0 ... 50 ° C)
± 0,2 % RH
Hysteresis <± 1 % RH
Resolution Humidity 0,02 % RH
Linearity < ± 1 % RH
Tk residual error (50 % RH) 0,05 % RH / K (0 ... 60 °C)
Long-term drift < 0,5 % RH / a
Meassuring principle Capacitive polymer humidity
sensor
Temperature measurement
Measuring range temperature - 40 ... +125 °C
Accuracy temperature ± 0,2 K (0 °C to +60 °C)
Reproducibility ± 0,1 K
Resolution Temperature 0,015 °C
Long-term drift < 0,05 K / a
Meassuring principle PTAT (integrated)
General
Dimensions (∅ x H) 13 mm x 32 mm
Operating voltage 2,7 ... 5,5 V
Current consumption
(nominal)
< 22 µA at 1 Hz update rate
Current consumption (max.) 850 µA
Power consumption (sleep) < 1 µA
Operating temperature -40 °C ... 125 °C
Humidity range 0 ... 100 % RH
Digital interface I2C, s. Art. No. page 1
Material Polyamid, black
Water absorption 3...4%
Connection Binder plug 5 ways Series 711
Storage temperature -20°C...+50°C
CE-conformance 2014/30/EU
Electromagnetic conductivity EN 61326-1:2013
Environmental data RoHS-complient
Article numbers
Humidity/temperature probe with I²C-Interface
Address 0x28 0626 0110-05
Address 0x29 0626 0110-10
Address 0x2A 0626 0110-11
You can nd the detailed datasheet on our home-
page: Service&Support -> Downloads -> Data sheet
HYT939
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
Fon [phone] | Fax [phone] | [e-mail] | bb-sensors.com
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