B+B HYTE-ANA-1735 User manual
OPERATION MANUAL
Technical changes reserved
0141 0316-22 20.04.2016
Calibrated humidity module
HYTE-ANA-1735
DescriptionDescription
Features
Off late, humidity measurement has found entry into many mass produ-
ced items like ventilation and household appliances or automotive ap-
plications. Normally for such products, a fully integrated and calibrated
sub-module is required which can result into an attractive system price
with a standard calibrated interface.
The B+B humidity module combines the most modern thin lm sensor
technology with exible, digital signal processing of an ASIC and pre-
sents an optimum price performance ratio.
The high quality, capacitive humidity sensor guarantees highest measu-
ring accuracy, drift stability, weather resistance as well as an outstanding
long-term stability. Moreover, after long saturation phase, the measured
value builds up very fast.
The calibrated humidity and temperature values are transmitted over the
analogue output with high accuracy and resolution, which enables simp-
le integration into customised products. The calibrated output signal gu-
arantees simple integration of the sub-system during development pha-
se, which results in the shortest time-to-market product developments.
Additionally, temperature can also be determined over the brought out
NTC, which enables calculation of dew point or absolute humidity.
Technical Data
Characteristic features
• Calibrated module for humidity and temperature measurement
and also for determining dew point
• Analogue, ratiometric voltage output 1...3.6 V for 0...100 % RH
• Accuracy ±3 % RH from 20...90 % RH
• Capacitive SMD Polymer sensor
• Precise, long term stable and dew resistant
• Passive NTC for temperature measurement
• Soldered pins for direct mounting on printed circuit board
• RoHS conformance, CE-conformance
• Wide application spectrum
• Miniaturised dimensions
• Optimum price performance ratio
Typical areas of application
• Building automation
• Ventilation and air-conditioning
• Industrial instrumentation
• White goods
• OEM products
Humidity module HYTE-ANA-1735
Humidity sensor Capacitive polymer SMD
humidity sensor KFS 140
Humidity
application range
0 ... 95 % RH
(max. dew point = 50 °C)
Accuracy
±3 % RH of 20...90 % RH and at 23 °C
Calibration Two point, 33 % and 75 % RH
Response time t90 <20 sec. at 2 m/s
Tk-Residue error <0.1 % RH/K type.
Humidity signal (linear) 1...3.6 V for 0...100 % RH ratio metric
Resolution 0.1 % RH (10 Bit)
Temperature
application range
-40...+100 °C
Temperature
sensor
Precision-NTC 10 k 0.5 %
Type TS-NTC-103
Operating voltage 4,75...5,25 V
Current input 2,5 mA
CE-conformance 2014/30/EU
EMV-noise emission 61000-6-3:2011
EMV-noise withstanding 61000-6-1:2007
Dimensions
(B x H x T)
36.0 x 12.0 x 13.5 mm
Grid size 2.54 mm
see drawing
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
1 / 2
OPERATION MANUAL
Technical changes reserved
0141 0316-22 20.04.2016
Calibrated humidity module
HYTE-ANA-1735
Application notes
The module can be either inserted into contacts or can be soldered
directly onto the circuit board. The operating voltage is right from
4.75...5.25 V. The current input is around 2.5 mA.
Voltage output
At PIN4, the measured relative humidity values are passed on as vol-
tage signal. The measuring range of 0...100 % RH is represented as
voltage signal of 1...3.6 V.
The voltage signal is ratiometric to the operating voltage within the
specied supply voltage range. The calibration at works is done at 5 V.
The minimum connection impedance should not be below 10 kΩ. The
output impedance is 50 Ω.
The output is protected against short time transients. Stray voltage at
the output can lead to damage of the ASIC and should be essentially
avoided.
Temperature signal
A precision NTC is tted in the module whose terminal is brought out
at pin 1 of the module with reference to ground. The sensor enables
precise temperature measurements over a wide temperature range
and can be very easily evaluated because of the large impedance and
high gradient. The accuracy is comparable to a platinum resistance:
Moreover, the nominal resistance and also the B-value are tolerated
within ±0.5 % so that the component can be used in many applications
without temperature calibration. By means of a simple resistance mea-
surement, an accuracy of ±0,12 K can be reached at 25 °C. The maxi-
mum error of ±0.5 K. occurs in the temperature range of -60...+85 °C.
The data sheet of sensors and extensive technical data in the form of
excel tables can be obtained on request or can be downloaded from
our Homepage (Type TS-NTC). Alternatively, assembly of other sensor
elements is also possible e.g. a Pt1000.
Drawing and Layout
Product variants
The ratiometric voltage output can also be supplied with other scaling,
e.g. 0...5 V or 0...1 V. Absolute voltage output of 0...1 V to 0...5 V is
also possible.
The possible operating voltage range is right from 3.3 V to 12 V DC
depending upon the design. For operating voltage over 5 V, the voltage
is internally regulated in the module.
Alternative to analogue interface, a digital interface over I²C, SPI or
One-wire-Bus is also possible. The ASICs used in our modules sup-
port another set of further options, for example, PWM or switch signal
output.
Pin Signal Function
1 NTC Passive temperature sensor
2GND Ground
3 VCC
Operating voltage 4.75...5.25 V
4 RH Voltage output of relative humidity
Attention
Please avoid extreme mechanical and inappropriate exposure.
The device/product is not suitable for potential explosive areas and
medical-technical applications.
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
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