B+B Sensors HYTE-ANA-1735 Operation Manual

Download

Page 1

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 produced items like ventilation and household appliances or automotive applications. 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 guarantees simple integration of the sub-system during development phase, 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

1 / 2

Page 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 voltage 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

specied 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 maximum 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 support another set of further options, for example, PWM or switch signal

output.

Pin Signal Function

1 NTC Passive temperature sensor

2 GND 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.

2 / 2