Datasheet

TESLA BLATNÁ, a.s., Palackého 644, 388 15 Blatná, Czech Republic
Phone: [phone], E-mail: [e-mail]
BLATNÁ, a.s.
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Humidity Sensors BI2H, BI2H
C
Humidity sensors BI2H (without case) and BI2HC (with case) are semiconductor sensors
for measuring of relative humidity. Physical principle of the measuring is based on the properties
of polymer semiconductors, change of their conductivity by the moisture.
Characteristic properties:
• Humidity sensor with a polymer semiconductor layer.
• Measuring range from 20 to 90% RH
at temperatures from 0 to 60 °C.
• Simple evaluation.
• Compact dimensions.
• No calibration required.
• Economic performance / economic design.
Typical areas of application:
• Monitoring climate.
• Consumer applications.
• Office equipment.
• Building instrumentation.
• Refrigeration and air conditioning systems.
• Air humidifiers, air dryers.
Technical specification
Humidity sensors - type BI2H, BI2H C
Principle of measurement
polymer semiconductors
Humidity - operating range
20 to 90 % RH without condensation
Temperature - operating range
0 to 60 °C
Humidity accuracy
± 4 % RH
Hysteresis
< 2 % RH
Response time t
90
approx.120 s
Impedance
200 Ω to 3 MΩ
Measuring voltage
1 V
eff
Rated power
0,2 mW max.
Signal waveform
AC voltage (without DC offset)
Measuring frequency
1 kHz
Dimensions
5,5 x 8,8 x 0,6 mm
Outlets (connections)
Ag wire ø 0.25 mm, length 10 ± 2 mm, or customer specifications
Caution recomandation for operation :
To avoid direct application of DC voltage on humidity sensor.
To protect sensor from dewfall and drenching.
To avoid any operation of humidity sensors in the following
environmental ambient: Inorganic gas – Sulfide dioxide, Chlorine,
Ammonia etc. , Organic gas – Alcoholic, Glycols, Aldehydes etc.
However, the suitability for a certain application should be checked by the user beforehand.