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EMS-183

Snow Depth Sensor

Non-contact laser snow depth sensor with ±1 mm accuracy, heating and temperature compensation.

Laser rangingSnow depthNon-contactRS485Modbus RTUHeated
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EMS-183 Snow Depth Sensor
Environmental Monitoring
Family
EMS Series
Category
Environmental Monitoring
Principle
Phase-method laser ranging, non-contact
Range
0.05 to 2.5 m

01Overview

Engineered for the field

A non-contact snow depth sensor that uses phase-method laser ranging to measure the vertical distance from the snow surface to the ground at a fixed point. It resolves changes to 1 mm with ±1 mm accuracy across a 0.05 to 2.5 m range, and temperature compensation keeps readings stable as conditions change. The waterproof, spray-coated housing is built for long-term outdoor use, an integrated heating function supports operation in freezing weather, and measurement uses a Class II 635 nm laser. Readings are output over RS485 Modbus, with Ethernet, Wi-Fi or LoRa options for sending data to remote platforms.

02Key Features

What makes the EMS-183 different

01

Non-contact laser

Phase-method laser ranging measures snow depth without touching the snowpack.

02

Millimetre accuracy

±1 mm accuracy and 1 mm resolution across a 0.05 to 2.5 m range.

03

Temperature compensation

Keeps readings stable as ambient temperature changes.

04

Heated, weatherproof build

Waterproof spray-coated housing with a heating function for long outdoor service.

03Technical Specifications

Detailed specifications

Overview

Principle
Phase-method laser ranging, non-contact
Range
0.05 to 2.5 m
Accuracy
±1 mm
Output
RS485, Modbus RTU

Performance

Resolution
1 mm
Single measurement time
0.05 to 1 s
Laser
635 nm, under 1 mW, Class II
Spot size
Point 5 mm at 10 m; line 3 x 150 mm at 10 m

Power and Environment

Power supply
10 to 30 V DC
Power consumption
0.8 W (3.5 W when heating)
Operating environment
-40 to +50 °C, 0 to 95 %RH non-condensing

04Applications

Built for these use cases

  • Use case 01

    Meteorological snow observation

  • Use case 02

    Road and transport snow monitoring

  • Use case 03

    Mountain and hydrological stations

  • Use case 04

    Snowmelt and water resource studies

Industries

Deployed across these sectors

UtilitiesSmart CitiesEnvironmental Monitoring

05Resources

Datasheets, manuals and technical documents

Documents are shared on request. Tell us which file you need and our team will send it to you.

  • EMS-183 Datasheet

    Datasheet

    Request

  • EMS-183 User Manual

    User Manual

    Request

06Related products

Complementary engineering