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Synetica enLink OAQ User Manual

Lorawan wireless outdoor air quality monitor
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enLink
OAQ
USER GUIDE
LoRaWAN Wireless Outdoor Air Quality Monitor

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Summary of Contents for Synetica enLink OAQ

  • Page 1 enLink USER GUIDE LoRaWAN Wireless Outdoor Air Quality Monitor...

  • Page 2: Table Of Contents

    Contents enLink OAQ User Guide Introduction Configuration Join enLink Devices to the LoRa Network Powering the Unit Setting / changing the enLink LoRa keys Live Menu Configuration Menu CO2 Sensor Auto Calibration Configuration Particulate Matter Sensor Configuration EPA Index Sensor Configuration...
  • Page 3 Using cutting-edge digital and gas sensing technology, the enLink OAQ ensures drift-free reading without further calibration and extended instrument longevity. Designed and manufactured in the UK, the enLink OAQ records essential air quality data. The outdoor air monitor can be battery, solar, or externally powered ensuring flexible installation options.

  • Page 4: Introduction

    The device can monitor temperature, relative humidity, particulate matter, CO2, ozone, CH2O, CO, NO2, H2S, SO2, O2, volatile, organic compounds, barometric pressure and sound levels. The enLink OAQ is an MCERTS certified particulate matter sensor. Data is transmitted via long range LoRaWAN wireless for remote analysis.

  • Page 5: Join Enlink Devices To The Lora Network

    AppEUI and AppKey settings will automatically join the LoRa network when they are first powered up. enLink OAQ Unit Label The unique DevEU is printed on all enLink devices and is also present in the QR code. The DevEUI can be used to...

  • Page 6: Powering The Unit

    enLink Powering the Unit 4a. Powering the unit via the onboard batteries To power the device ON, first slide the power switch to the EXT position, to disconnect the battery power input. Insert the 4 x AA sized Lithium 3.6V batteries taking great care to insert them the correct way around. Locate the plus (+) and minus (-) signs on the battery and use the plus (+) and minus (-) guides on AA battery holders to insert the batteries in the proper direction.
  • Page 7 enLink OAQ Sensor Cartridge Once powered ON, the enLink device will send a join request message to the gateway. The status LED will blink RED as shown below whilst the join process is taking place. Depending on factors such as signal strength, RF interference etc the Join process may take several seconds to complete.
  • Page 8 enLink Blinking Red LED – Attempting Join When the device has successfully joined the network the ode LED will blink GREEN for several seconds to show that the join has been completed. The LED’s will then switch off to conserve the batteries.
  • Page 9 enLink 4b. Powering the unit with external power The OAQ may be powered from an external power source if required. The unit requires 12 – 24V DC at 200mA. To power the unit, first drill out the cable entry knockout as shown below with a 5 - 5.5mm drill. There is a moulded tongue behind the knockout to allow a cable tie to be attached to the cable to act as a strain relief.
  • Page 10 enLink Gently pull on the cable to ensure that that it is correctly inserted. Ensure that no uninsulated cable is showing. Once complete, move the power switch to the EXT position for external power as shown below. The unit will power up and attempt to join the LoRaWAN network.

  • Page 11: Setting / Changing The Enlink Lora Keys

    Once the sensor cartridge is removed, connect a micro USB cable to the enLink unit. There are two USB connectors on the enLink OAQ, so be sure to connect to the correct USB port (USB2) as shown in the image below. The device will attach to a COM port on your PC.
  • Page 12 enLink Using a terminal program (e.g. Teraterm https://ttssh2.osdn.jp/) connect to the COM port used by the enLink device. To verify which COM port is being used, check the Windows™ Device Manager (In Windows - Click the Start button, type Device Manager into the search box and tap Device Manager on the menu.) Expand the Ports (Com & LPT) menu as shown below.
  • Page 13 enLink From the Quick Start Settings Menu, access the AppEUI setting by entering E. Enter the 16 character AppEUI using numbers and letters A to F. Do not include spaces or any other characters. Pressing S will enter the default AppEUI which you can then edit.

  • Page 14: Live Menu

    enLink Live Menu Press X from the Quick Start Settings Menu to return to the enLink Main Menu. The header will show ** Reboot Required ** as shown below. The new key settings will not take effect until the enLink device is restarted. Enter R to reboot followed by OK. The device will restart with the entered AppEUI and AppKey and attempt to join the LoRa network.

  • Page 15: Configuration Menu

    Configuration Menu The enLink OAQ Configuration Menu allows you to view current sensor readings and also to change various functions of their behaviour such as calibration data. To enter the Configure Device Menu press C from the Main Menu. A screen similar to the one below will show.

  • Page 16: Co2 Sensor Auto Calibration Configuration

    enLink CO2 Sensor Auto Calibration Configuration To view and set CO2 sensor calibration information, enter C and the screen below will show. Please see the table below for information on each menu item. Menu Item Description Details Shows the last CO 2 value read and the minimum CO 2 value read since the last auto Last/Minimum Reading calibration.
  • Page 17 Many of the above parameters can also be set via LoRaWAN downlink message. See https://github.com/synetica/ enlink-decoder#carbon-dioxide-sensor-parameters for more details. The CO2 sensor needs to be exposed to fresh, clean air periodically for the auto calibration to be successful. Most occupied areas are unoccupied for some time during a week-long period, typically at night, or at the weekend and therefore the auto calibration runs every 8 days by default.

  • Page 18: Particulate Matter Sensor Configuration

    By default, this cleaning cycle operates every 7 days but may be changed if required Reducing the cleaning interval will have a detrimental effect on battery life. The above parameters can also be set via LoRaWAN downlink message. See https://github.com/synetica/enlink- decoder#settings-for-particulate-sensors for more details.

  • Page 19: Epa Index Sensor Configuration

    enLink EPA Index Sensor Configuration The OAQ has an EPA AQI sensor fitted, this is used to determine the Air Quality Index (AQI) based on nitrogen dioxide (NO2) and ozone (O3) concentrations. The sensor uses moderate amounts of power when in use as it utilises an integrated heater and metal-oxide chemresistor which measures the current amount of ambient ozone and nitrogen dioxide.

  • Page 20: Gas Sensor Configuration

    enLink Gas Sensor Configuration The OAQ has the capability for one additional gas sensor to monitor one of the gases below: · AQS-CO-10 Carbon Monoxide, 0 - 10 ppm · AQS-CH2O-5 Formaldehyde, 0 - 5 ppm · AQS-H2S-2 Hydrogen Sulphide, 0 - 2 ppm ·...
  • Page 21 Set Aggregation Method – 1 Minimum (0x0). Downlink message is: A5 02 31 01 • Set the EMA (smoothing) Factor – 4 (0x04). Downlink message is: A5 02 32 04 • Reboot. Downlink message is: A5 01 FF https://github.com/synetica/enlink-decoder#gas-sensor-parameters for further details on configuring the gas sensor via LoRaWAN downlink messages.

  • Page 22: Power Considerations

    Power Considerations The enLink OAQ can be powered with 4 x 3.6V lithium-thionyl chloride (Li-SOCl2) AA sized batteries or via external power (12 - 24V DC @ 200mA or greater). enLink OAQ can be specified with many environmental sensor options including laser scattering particle matter sensor and a variety of gas sensors.

  • Page 23: Battery Installation / Replacement

    Battery Installation / Replacement For battery power, enLink OAQ devices use 4 x SAFT LS14500 or EVE ER14505 AA size 3.6 volt lithium-thionyl chlo- ride (Li-SOCl2) batteries (non-rechargeable) or direct equivalent. No other batteries are approved for use in the device.

  • Page 24: Oaq Mounting Details

    enLink OAQ Mounting Details The OAQ should be fixed to a building wall which faces away from the sun, which is on the north side in the northern hemisphere (or south facing in the southern hemisphere). They should not be exposed to direct sunlight. The units are best placed in the middle of the building at least 3m above the ground and away from any exhaust ducts or flues.
  • Page 25 enLink Fix the screws to the wall or bracket using suitable pan head screws and then slide the OAQ onto the screws. • Weight (without batteries): 180g • Weight (with batteries): 250g...

  • Page 26: Lorawan Payload Decoder

    LoRaWAN Payload Decoder The latest LoRaWAN payload decoders and guides are available on the Synetica GitHub repository: https://github.com/synetica/enlink-decoder A live payload decoder which allows you to paste LoRa payloads in Hexadecimal or Base 64 and see the correctly decoded results can be found at the link below: https://synetica.github.io/enlink-decoder/...
  • Page 27 About us Synetica was established in 2008 with the simple idea to revolutionise air quality monitoring, energy usage and remote asset monitoring. Our global customer base relies on our expertise to help them reduce emissions and clean up the air they breathe by allowing them to monitor their energy usage and key environmental parameters via the touch of a button.

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