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Cisco Meraki

MT14 High Sampling Mode

Overview

Fast Sampling mode on MT14 allows the sensor to enable faster sampling rate for key metrics that users may be interested in collecting more frequently as per the use case.

High Sampling Mode

The High sampling mode changes the following metrics:
 

Metric

Sampling Rate

Particulate Matter 2.5 (PM2.5)

1 second (USB-C power required)

Ambient Noise

3 second

TVOC

90 second (remains unchanged)

Temperature

Disabled

Humidity

Disabled

IAQ (Composite Score)

Disabled

Enabling High Sampling Mode

Early Access Opt-in

The MT14 High Sampling Mode is currently available as an Early Access Opt-in feature.

In order to enable the mode, please navigate to Organization>Early Access and toggle to the button shown below to enable this feature. 

 

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Device Settings

After the High Sampling Mode is enabled as an Early Access feature, the MT14 Sensor Details page will now have a new tab available. Here are the steps to enable this feature on an MT14

  1. Ensure that at least 1 gateway (MR/MV) is within 15 feet of the sensors for optimum coverage.

Due to the increased amount of data being collected, the number of sensors per gateway has been reduced to 8 when using High Sampling Mode.

  1. High Sampling mode can now be enabled on a per sensor basis. Navigate to Sensor>Sensor, select the MT14 you wish to use and under Settings tab you can toggle the PM2.5 High Sampling Mode

MT14 units must be persistently powered for this mode to work. The toggle shown above will be grayed out if the MT14 is on battery. Upon loss of external power when this mode is enabled, PM2.5 will not be sampled but other metrics will continue to sample if the AA batteries are installed.

  1. After the High Sampling mode is turned on, the sensor will receive a configuration to modify the metric collection as outlined in the table above.

It can take up to 20 minutes for the sensor to receive the new configuration as per the next check in period. 

Minimum Firmware Requirements

 

MT

MR

MV

1.4.1

29.4.1

4.20+

Things to Consider

Use Cases

Fast sampling mode can be useful in a number of use cases where continuous sampling is beneficial to record transitory environmental states.
 

  1. Particulate Matter (PM2.5) - This metric measures dust particles that are less than 2.5µm. PM2.5 comes from many sources including automobiles, construction sites, industrial facilities, fires, smokestacks, and cooking fumes along with vaping fumes from e-cigarettes. When the sampling frequency is increased to 1 second, the sensor can detect transitory changes introduced by these sources.

  2. Ambient Noise - Ambient noise is the measurement of noise that’s in the area. To ensure comfort, prolonged exposure is usually measured over a long period of time. However, sampling it as frequently as 1 second, users can also get alerted for shorter spikes like loud noises that need to be investigated.

Updated Dashboard Charts

With the fast sampling mode enabled, the data collected is now 300 times more than before. To accommodate the extra data, the dashboard charts will now be updated with aggregated data to improve performance.

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