EMOxxx user manual 1_6

Features
• Integrated MCU
• Corrected atmospheric pressure readings
• Derived elevations with customizable datum
• Temperature, humidity and gas readings
• Mesh networking
• Simple serial interface
• Metric or Imperial output units
Application Examples
• Indoor elevations
• Building pressurization monitoring
• Multi-node telemetry networks
• Altitude reference for UAVs
Overview
The EMOxxx series differential barometer/altimeter (patent pending) environmental monitor OEM
module provides atmospheric pressures and derived elevations at a rover using corrections transmitted
from a stationary base. In traditional systems elevations are calculated based on pressure readings for
a stand-alone unit and are subject to the errors inherent with environmental changes in pressure. This
versatile engine offers three modes of operation detailed below.
Modes
A) Determining a floating rover elevations based on corrections (black arrow) from a fixed base. In
this application the rover outputs a corrected elevation as it is raised or lowered relative to the
ambient atmospheric pressure (blue arrows). When used inside an enclosed space such as a
building both units must be located within. Multiple rovers can use the same base.
B) Determining a fixed rover pressure difference based on corrections (black arrow) from a fixed
base. In this application the rover outputs a corrected pressure (grey arrow) inside an enclosed
space such as a building (grey rectangle) relative to the ambient atmospheric pressure (blue
arrows). The base must be located outside the enclosed space. Multiple rovers can use the
same base.