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  1. Detection - Measurement
  2. Flow, Pressure and Level Measurements
  3. Hydrostatic level sensor
  4. Milesight IoT
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Hydrostatic level sensor EM500-SWL
for oilfor waterfor liquids

Hydrostatic level sensor - EM500-SWL - Milesight IoT - for oil / for water / for liquids
Hydrostatic level sensor - EM500-SWL - Milesight IoT - for oil / for water / for liquids
Hydrostatic level sensor - EM500-SWL - Milesight IoT - for oil / for water / for liquids - image - 2
Hydrostatic level sensor - EM500-SWL - Milesight IoT - for oil / for water / for liquids - image - 3
Hydrostatic level sensor - EM500-SWL - Milesight IoT - for oil / for water / for liquids - image - 4
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Characteristics

Technology
hydrostatic
Medium
for liquids, for water, for oil
Interface
LoRaWAN
Applications
fuel tank, for monitoring, for boreholes
Approvals
CE, FCC, IC-certified
Other characteristics
stainless steel, submersible, with LED indicator, IoT, cloud connected, Internal datalogger, IP67, IP68
Level range

Min.: 0 m
(0'00" )

Max.: 200 m
(656'02" )

Process temperature

Min.: -20 °C
(-4 °F)

Max.: 70 °C
(158 °F)

Description

Overview
  • Milesight EM500-SWL is a submersible water level sensor with a vented-gauge probe for reliable liquid level measurement in harsh environments.


Key Features
  • Not affected by foam, wind or rain
  • Customizable measuring range: standard 0–3 m / 5 m / 10 m H2O; up to 200 m and other liquids on request
  • Compatible with oil and other non-corrosive media (stainless steel 304 probe)
  • Waterproof: Transceiver IP67; Level Sensor IP68
  • Long battery life with 19000 mAh Li-SOCL2 (ER34615) — tested up to 10 years under typical conditions
  • LoRaWAN® wireless for long-range, low-power transmission
  • Easy configuration via NFC with Milesight ToolBox and USB Type-C for console/configuration
  • Compatible with Milesight IoT Cloud for visualization, automatic triggers, reports and real-time alerts


Wireless & Deployment
  • LoRaWAN® technology (OTAA/ABP, Class A)
  • Internal antenna
  • Supported bands: CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
  • Tx power examples: 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
  • Sensitivity: −137 dBm @300 bps


Cloud Data Management
  • Data visualization dashboard for at-a-glance figures
  • Automatic triggers and scene-based automation when integrated with cloud and other Milesight IoT sensors
  • Scheduled reports and real-time alerts
  • Android & iOS apps for device management


Easy NFC Configuration
  • Step 1: Install Milesight ToolBox
  • Step 2: Enable NFC and run ToolBox, then place your phone on the device
  • Step 3: Verify password and start configuring


Installation Options
  • Pole mounting
  • Wall mounting
  • DIN-rail mounting (via optional DIN rail kit)


Advanced Capabilities
  • On-device data storage (≈1000 entries), automatic retransmission and data retrieval after connectivity loss
  • Threshold alarm support
  • Non-clogging design; suitable for liquids non-corrosive to stainless steel 304


Specifications
  • Model: EM500-SWL
  • Measurement: Vented gauge water level (liquid level/pressure)
  • Range: 0–3 m / 0–5 m / 0–10 m (standard). Customizable up to 200 m and for other liquids
  • Accuracy: ±0.5% FS
  • Resolution: 0.01 m
  • Long-term stability: ≤ ±0.3% FS/year
  • Wireless: LoRaWAN® (OTAA/ABP, Class A)
  • Frequency: CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
  • Tx power: 16 dBm (868) / 20 dBm (915) / 19 dBm (470)
  • Sensitivity: −137 dBm @300 bps
  • LED: 1 × internal LED indicator
  • Button: 1 × internal power/reset button
  • USB: 1 × USB Type-C (internal) for configuration and console
  • Power supply: 1 × 19000 mAh Li-SOCL2 battery (ER34615)
  • Battery life*: ~10 years (SF7 & SF10, EU868); ~10 years (SF7, US915); ~9 years (SF10, US915) — tested at 10 min interval, 25°C
  • Operating temperature: Transceiver −30°C to 70°C; Level sensor −20°C to 70°C
  • Relative humidity: 0%–100% (non-condensing)
  • Ingress protection: Transceiver IP67; Level sensor IP68
  • Housing & color: Transceiver ABS+PC (grey); Level sensor stainless steel 304 (silver)
  • Dimensions: Transceiver 105.4 × 71 × 69.5 mm; Level sensor 130 × Ø27 mm (varies with cable length)
  • Weight: Transceiver 328 g (with battery and mounting bracket); level sensor weight varies with cable length
  • Installation: Pole, wall or DIN-rail mounting
  • Approvals: CE, FCC, ICASA, ISED, Telec; Environmental: RoHS
  • Note: *Battery life tested under laboratory conditions and provided as guideline only.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.