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Milesight EM411-RDL ATEX radar level sensor for hazardous tank and process monitoring
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Milesight EM411-RDL ATEX radar level sensor for hazardous tank and process monitoring

EM411-RDL

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ATEX Radar Distance/Level Sensor

Intrinsically safe Zone 0 radar level sensor for hazardous locations with LoRaWAN or cellular connectivity.

Features

  • ATEX Zone 0 certified for explosive atmospheres
  • 60 GHz radar, 0.3 ~ 12 m range, 8° beam
  • Chemical-resistant PVDF housing, IP68
  • Scenario modes and automated calibration
  • Built-in tilt sensor and echo curve diagnostics
  • NFC and Bluetooth remote configuration
  • LoRaWAN and Cat.1 cellular versions

Hardware

  • 1 × 19000 mAh ER34615 battery, ~7 years
  • ∅101 × 87 mm PVDF housing
  • G 1½″ or NPT 1½″ tank thread options
  • Operating temperature −20 °C ~ 60 °C (LoRaWAN)

Applications

Hazardous tank farms, chemical plants, oil & gas and explosive atmosphere level monitoring.

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    Description

    EM411-RDL Description

    Overview

    The EM411-RDL extends the EM41x-RDL radar platform with ATEX Zone 0 certification for intrinsically safe monitoring in explosive atmospheres. Millimeter-wave radar delivers stable level readings in aggressive chemical environments.

    ATEX Zone 0 Safety

    Built for hazardous locations, the EM411-RDL combines Zone 0 approval with corrosion-resistant PVDF and IP68 sealing to eliminate ignition risks while maintaining measurement accuracy.

    Precision Radar Measurement

    60 GHz radar with an 8° beam measures liquids and smooth solids from 0.3 to 12 m, resilient to dust, steam, condensate and surface turbulence.

    Application Scenario Modes

    Pre-configured modes for standard sites, rainwater wells, sewage wells and storage tanks speed deployment. Tilt monitoring alerts if the device is dislodged.

    Connectivity Options

    LoRaWAN backhaul integrates with Milesight gateways. Cat.1 cellular supports operator IoT platforms via TCP/UDP/MQTT/AWS.

    Industry Applications

    EM411-RDL Industrial Applications

    Hazardous Tank Farms

    ATEX Zone 0 certification enables level monitoring in explosive atmospheres without compromising safety or accuracy.

    Chemical & Process Plants

    PVDF housing resists aggressive chemicals while radar penetrates foam and vapor where other sensors fail.

    Oil & Gas Infrastructure

    Storage vessels and process tanks in classified areas gain maintenance-free, non-contact level data over wireless backhaul.

    Seawater & Brine

    Corrosion-resistant materials suit high-salt mist and brine environments alongside standard industrial liquids.

    Specifications

    Measurement

    Technology 60 GHz millimeter-wave radar
    Detection Distance 0.3 ~ 12 m
    Detection Angle 8°
    Accuracy Up to ±2 mm / ±5 mm
    Resolution 1 mm

    Wireless Transmission

    Technology LoRaWAN®
    Antenna Internal antenna
    Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
    Tx Power 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
    Sensitivity −137 dBm @300 bps
    Mode OTAA/ABP Class A

    Physical Characteristics

    Power Supply 1 × 19000 mAh ER34615 Li-SOCl2 battery
    Battery Life Around 7 years (15 min collection + daily report, 25 °C)
    Operating Temperature −20 °C ~ 60 °C
    Ingress Protection IP68; ATEX Zone 0
    Housing PVDF (UL94 V0), blue + grey
    Approvals CE, FCC, ATEX (Zone 0)
    Order Codes

    Order Codes

    SKU: EM411-RDL

    EM411-RDL-915M – ATEX Zone 0 LoRaWAN radar sensor, internal antenna

    EM411-RDL-915M-EA – ATEX variant with external antenna (SMB)

    Specify LoRaWAN frequency band (EU868, US915, AS923, etc.) when ordering.

    Order by referencing the SKU – contact info@easynt.com

    Downloads

    Downloads and Datasheets

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