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Radar liquid level sensor (version EM411)
Vendors's code:
Product code: EM411-RDL-868M
Barcode:
Code 39:
ISBN:
Milesight EM411-RDL-868M is an industrial radar distance and level sensor with LoRaWAN EU868, also designed for operation in potentially explosive atmospheres ATEX Zone 0 – Ex ia IIC T4 Ga. The 60 GHz millimetre-wave radar enables non-contact measurement of liquids and smooth solid surfaces within a range of 0,3–12 m, with a resolution of 1 mm and a narrow 8° beam.
The variant without an additional PN designation features an internal LoRaWAN antenna and a process connection G 1½". The PVDF enclosure provides an IP68 protection rating, while the 19 000 mAh Li-SOCl₂ battery enables approximately 7 years of operation under the manufacturer's test conditions. The sensor stores up to 2000 records and supports data retransmission, level alarms, radar diagnostics, and tilt monitoring.
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EM411-RDL — Non-Contact Level Measurement up to 12 m in Zone 0
Milesight EM411-RDL-868M is an industrial radar distance and level sensor using 60 GHz millimetre-wave technology and LoRaWAN EU868 communication.
The EM411-RDL model was designed for demanding industrial installations, including potentially explosive atmospheres. ATEX Zone 0 certification enables use in applications requiring intrinsically safe design.
This variant features an internal LoRaWAN antenna and a G 1½" process connection, enabling direct mounting on a suitable tank nozzle.
60 GHz Radar, ATEX Zone 0 and IP68 Enclosure
0,3–12 m
The wide measurement range makes it possible to monitor levels in both smaller and large tanks.
ATEX Zone 0
The EM411 version carries the Ex ia IIC T4 Ga marking and is also designed for operation in potentially explosive atmospheres.
IP68 + PVDF
The sealed chemically resistant PVDF enclosure supports operation in demanding environments.
Level Monitoring in Demanding Installations
Non-Contact 60 GHz Measurement
The EM411-RDL uses 60 GHz millimetre-wave radar to measure distance to a liquid surface or smooth solid object.
Radar technology is less susceptible to temperature, dust, condensation, and acoustic noise than many conventional measurement methods.
0,3–12 m Range and 8° Radar Beam
Up to ±2 mm under Optimal Conditions
ATEX Zone 0 Certification
The EM411-RDL is a special variant of the EM41x-RDL family certified for potentially explosive atmospheres.
Marking Ex ia IIC T4 Ga corresponds to an intrinsically safe design intended for applications compliant with ATEX Zone 0 requirements.
Internal Antenna and G 1½" Thread
This variant does not have an additional EA or NPT designation. According to the manufacturer's ordering system, this indicates a version with an internal antenna and G 1½" thread.
The built-in antenna simplifies the device design and does not require an external antenna cable.
IP68 and PVDF Enclosure
IP68
The design is resistant to dust and water, according to the manufacturer's declaration up to 1 m for 48 hours.
PVDF
The enclosure provides high resistance to corrosion, wear, and demanding industrial environments.
UL94 V0
The enclosure material has a UL94 V0 flammability rating.
Built-in 3-Axis Accelerometer
The EM411-RDL monitors its own orientation using a built-in 3-axis accelerometer.
Normal / Tilt status makes it possible to detect sensor tilt that may affect correct radar beam alignment.
Echo Quality and Installation Verification
Radar-echo Curve
Viewing the echo curve allows the quality of radar signal reflection to be assessed.
Diagnostic
The diagnostic function supports calibration and assessment of the installation location.
Blind Zone Alarm
The alarm indicates a result within the measurement blind zone.
Automatic Level Change Detection
2000 Records and Measurement Retransmission
2000 Records
The sensor can locally store up to 2000 historical records.
Retransmission
Measurements stored during temporary communication loss can be retransmitted.
Data Retrievability
The LoRaWAN version enables stored measurement history to be retrieved.
Wireless Outdoor Data Transmission
NFC, Bluetooth and LoRaWAN downlink
Device parameters can be configured using the mobile app via NFC or Bluetooth.
Selected settings can also be changed remotely using LoRaWAN downlink commands.
Approximately 7 Years of Autonomous Operation
The EM411-RDL uses an ER34615 Li-SOCl₂ battery with a capacity of 19 000 mAh.
The manufacturer declares approximately 7 years of operation with measurement every 15 minutes, reporting every 1440 minutes, and a temperature of 25°C.
* Manufacturer value with measurement every 15 minutes, reporting every 1440 minutes, and a temperature of 25°C.
Design Prepared for Demanding Installations
G 1½" Connection for Tank Mounting
The EM411-RDL-868M version without a suffix has a standard G 1½" tank thread.
The device can be threaded directly onto the tank or installed using a suitable wall bracket.
Key Parameters of the EM411-RDL-868M
* Up to ±2 mm for a perfectly smooth surface or calm liquid; up to ±5 mm for a relatively smooth surface or stable liquid. ** Approximately 7 years with measurement every 15 minutes, reporting every 1440 minutes, and a temperature of 25°C.
EM411-RDL in a Level Monitoring System
Distance and level measurements can be automatically transmitted from an outdoor or industrial installation to a central platform.
The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
Radar liquid level sensor (version EM411)
Nowości
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Gross price $270.60incl. %s VATNet price $220.00without 23% VAT
![[MIL-EM411-RDL-868M-EA] Milesight EM411-RDL LoRaWAN Distance Sensor (Radar, ATEX) (Antenne extern).webp](/environment/cache/images/productGfx_10580_256_256/MIL-EM411-RDL-868M-EA-Milesight-EM411-RDL-LoRaWAN-Distance-Sensor-Radar%2C-ATEX-Antenne-extern.webp "[MIL-EM411-RDL-868M-EA] Milesight EM411-RDL LoRaWAN Distance Sensor (Radar, ATEX) (Antenne extern).webp")
