Velleman MM102 User Manual

USER MANUAL
ANALOG HUMIDITY SENSOR BOARD
MM102
This breakout board is equipped with a hygrometric sensor, thus
it lends itself to detect the moisture found in the environment it is
placed in. It operates at a very low voltage (it correctly operates at
up to 5.5 Vcc) and typically absorbs 200 microamperes: it is thus
ideal even in applications that are battery powered, and in which a
minimal absorption is required.
The HIH-5030-001 sensor has the great virtue of supplying an
analog output signal, consisting in a DC voltage that varies in an
almost linear manner, as the relative humidity (RH) varies; thus it
may be interfaced both to analog circuits that check the air flow of
a dehumidifier installation, and it may be read by an A/D converter
or by a microcontroller's input that is supplied with an analog/digital
converter.
Red wire Black wire Yellow wire
5V positive GND negative Humidity output /
power supply power supply data request
The device's sensor component is of the capacitive kind, and it is
composed of thermosetting polymers that have been cut with a la-
ser. The signal's conditioning circuitry, integrated on a chip, is found in
the integrated circuit. The multilayer construction of the sensitive ele-
ment provides an excellent resistance to the greatest part of the risks
coming from applications such as, for example, condensation, dust,
filth, oils and common chemical products found in the measurement
environment.
AUGUST 2016