ALTA Tilt Sensor Configuration & Installation Guide

Overview

The ALTA® Wireless Tilt Sensor uses a wireless accelerometer to measure inclination data in two axes. It converts the accelerometer measurements into pitch and roll data points. It takes these measurements based on a user-configurable time interval or Heartbeat. On every Heartbeat, the sensor will capture its current pitch and roll. This measurement is then sent to the gateway, making the data available in iMonnit or other approved data services.

Settings to Configure

The settings below are specific to the ALTA Tilt Sensor.

  • Heartbeat Interval (Minutes)—The expected time between communication from the sensor to the gateway while in the Normal State and the absence of any data-triggering events.
  • Aware State Heartbeat (Minutes)—The expected time between communication from the sensor to the gateway while in the Aware State.
  • Assessments per Heartbeat—How many times between Heartbeats the sensor checks its measurements against its thresholds to determine whether to enter the Aware State.
  • Principle Axis Selection—Choose how the pitch and roll rotate around the X, Y, or Z axis.
  • Dominant Axis Selection—Select Auto, Pitch, or Roll.
  • Invert Pitch—Choose True or False.
  • Invert Roll—Select True or False.
  • Min Pitch Threshold (Degrees)—The lowest allowable pitch before the sensor reports the Aware State.
  • Max Pitch Threshold (Degrees)—The highest allowable pitch before the sensor reports the Aware State.
  • Min Roll Threshold (Degrees)—The lowest allowable roll before the sensor reports the Aware State.
  • Max Roll Threshold (Degrees)—The highest allowable roll before the sensor reports the Aware State.
  • Aware State Buffer (Degrees)—Prevents the sensor from bouncing between Standard Operation and Aware State when the readings are very close to a threshold.

Example: If you set a Maximum Threshold (Above) on a temperature sensor to 90° and a Hysteresis of 1°, then once the sensor takes an assessment of 90.0° and enters the Aware State, it will remain in the Aware State until the temperature readings drop to 89.0°. Similarly, at the Minimum Threshold (Below), the temperature will have to rise a degree above the threshold to return to Standard Operation.

Synchronize Off (Default)—The next report will occur one Heartbeat after the last report time. This allows the sensor to self-optimize network traffic patterns and reduce congestion.

Synchronize On—Aligns the next report with UTC (Global) time, regardless of the last report time. This allows multiple sensors to generate reports in a synchronized manner. Aware State Transitions will still report on a threshold breach, but the following report will return to the next aligned report interval.

Too many synchronized reports will increase network congestion. We recommend that no more than 10 devices per gateway are synchronized.

Example: The Heartbeat is configured to 60 minutes, and the device reports at 1:47 PM.

If Synchronization is Off, the subsequent reports are expected at 2:47 PM, then at 3:47 PM.

If Synchronization is On, the subsequent reports are expected at 2:00 PM and 3:00 PM.

Calibrate

Allows for Pitch and Roll offsets to be placed on the sensor. To reset, save Pitch and Roll offsets as 0.

Installation Steps

If this is your first time setting up your Monnit system, you must set up your iMonnit account and connect your ALTA Gateway to iMonnit before registering your sensor. See this article for steps to start: Creating an iMonnit account.

Step 1

Remove the sensor from the package. If installing an industrial sensor, attach the antenna.

Step 2

Register the sensor in iMonnit. Do not install the batteries until told to do so in iMonnit. Refer to this walk-through guide and configure the sensor’s Settings and Scale information in iMonnit for your specific application or use case.

Step 3

Determine the sensor’s installation location. We recommend placing the sensor in the location and ensuring it reports to the gateway before final installation. See this article if you’re using an ALTA Site Survey Tool to perform a site survey to determine sensor installation location.

Step 4

After ensuring that the sensor is communicating with the gateway, mount the sensor using the supplied screws or double-sided tape.

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