1. Introduction
This manual explains how to install and configure
the ACS inclinometers (suitable for industrial, mili-
tary and heavy duty applications) with an Analog +
RS232 interface.
1.1 ACCELENS (ACS)
ACS inclinometers sense and measure the angle of
tilt (Inclination/Slope) of an object withrespect to the
force of gravity. The angle is measured with the
relative change in electrical capacitance.
The basic principle behind the device is a Micro-
Electro-Mechanical System (MEMS) sensor cell
that is embedded to a fully molded ASIC. A simpli-
fied version ofthe sensor consists of two electrodes,
one isfixed,and the other is flexible(connected with
spring elements). When the inclinometer is parallel
to the surface of measurement, a corresponding
capacitance is measured. If the sensor is tilted, the
flexible electrode will change its position relative to
the fixed electrode. This results in a change of the
capacitance between the two electrodes which is
measured by the sensor cell. The change of the
capacitance is converted to a corresponding
inclination value.
The ACSseries of inclinometers are available intwo
variants; a single axis measurement variant with a
range of 0 - 360° and a dual axis measurement.
1.2 ACS Analog
The ACS Analog inclinometer is a simple, compact
and a very low cost inclinationmeasurement device
capable of measuring precise absolute position in
both single and dual axes.
It is compatible to most analog measurement de-
vices while also including a RS232 digital interface.
This RS232 interface can be used either to read the
corresponding position output or for configuring the
ACS according to the need of the application.
The dual output feature increases the flexibility and
compatibility to other digital devices too. Electrically,
like all other ACS variants it consists of a highly
integrated circuit in SMD technology, temperature
compensation, active linearization and the only
variationisthe analog interface. Customizedscaling
of analog output is also possible.
It is protected against polarity inversion and over
voltage peak protection. In addition to that, the fully
molded plastic housing provides a high resistance
to shock/ vibration and environmental protection of
up to IP69K when used with appropriate connect-
ors.
The ACS Analog comes with bootloaders for easy
re-configuration. The setup and configuration guide
for the bootloaders is available upon request.
