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CLM-LR05

TARANG

High-Precision Radar Level Sensor

A specialised non-contact radar level sensor for high-precision water level monitoring. TARANG uses 61 GHz FMCW radar to measure river, reservoir and drain levels to millimetre accuracy, without touching the water.

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TARANG – High-Precision Radar Level Sensor

Key Features of TARANG

Millimetre Accuracy

± 1 mm accuracy and 0.5 mm resolution across a 0-50 m range.

Non-Contact Sensing

Radar measurement is unaffected by water quality, debris or temperature changes.

Configurable Sampling

1 sample/s by default, configurable up to 10 samples/s.

Engineering Specifications

Technical details for TARANG.

Measuring Principle
61 GHz FMCW radar (W-band), non-contact
Range
0 - 50 m (customisable)
Accuracy
± 1 mm
Resolution
0.5 mm
Beam Angle
8° azimuth × 8° elevation
Sampling
1 sample/s default, up to 10 samples/s
Output Signal
4-20 mA, RS-485, RS-232, SDI-12, LoRa, MQTT
Operating Voltage
9-30 V DC (solar compatible)
Power Consumption
< 1.5 W active / 0.2 W standby
Enclosure
Weatherproof enclosure
Operating Temp
-40°C to +70°C
Mounting
Top-mount or bridge mount with adjustable bracket

Connectivity

GSM (2G / 3G / 4G)
LoRa
MQTT
RS-485
RS-232
SDI-12
4-20 mA
NB-IoT (optional)
Wi-Fi (optional)

Why Choose the TARANG?

Discover the powerful features that make TARANG a trusted solution for critical environmental monitoring applications.

Low Power

Under 1.5 W when active and 0.2 W on standby, suited to solar-powered sites.

Multiple Outputs

4-20 mA, RS-485, RS-232, SDI-12, LoRa and MQTT, plus GSM (2G / 3G / 4G), with optional NB-IoT and Wi-Fi.

Weatherproof and Rugged

A weatherproof enclosure built for outdoor deployment.

Use Cases of TARANG

The TARANG is designed to serve a wide range of applications where real-time insights are crucial. Here's where it fits best.

River Level Monitoring

Deploy the TARANG to accurately monitor and safeguard operations within river level monitoring.

Dam & Reservoir Level Monitoring

Deploy the TARANG to accurately monitor and safeguard operations within dam & reservoir level monitoring.

Urban Drain and Underpass Monitoring

Deploy the TARANG to accurately monitor and safeguard operations within urban drain and underpass monitoring.

Part of the ClimMaTech Platform

Once TARANG is connected, its data flows into the ClimMaTech cloud: dashboard, alerts, reports and APIs.

Platform Features

Real-Time Dashboard
Historical Trends
Alert Management
API Integration
Multi-Site Monitoring
Report Generation

System Architecture

1
TARANG (CLM-LR05)
2
Secure Communication Link
3
ClimMaTech Cloud
4
Dashboard, Alerts & APIs
ISO 9001:2015 CERTIFIED ORGANISATION
Designed, Engineered & Made in India

FAQs about TARANG

What does TARANG measure?

TARANG is a dedicated water level sensor. If you also need surface velocity, PRAVAAH combines a level radar and a velocity radar in one system.

How accurate is it?

± 1 mm accuracy with 0.5 mm resolution, over a measuring range of 0-50 m that can be customised.

Does it need to touch the water?

No. It is a non-contact 61 GHz radar mounted above the water, on top of a structure or on a bridge bracket.

Which interfaces does it support?

4-20 mA, RS-485, RS-232, SDI-12, LoRa and MQTT outputs, plus GSM (2G / 3G / 4G) communication, with optional NB-IoT and Wi-Fi.

Can it run on solar power?

Yes. It runs on 9-30 V DC and draws under 1.5 W when active, so it is solar compatible.

Can TARANG be used in an AWLR (automatic river water level recorder) station?

Yes. TARANG is the radar level sensor for an AWLR station. Together with a data logger and telemetry, such as GSM (2G / 3G / 4G) or LoRa, it records water level automatically and sends it to the cloud.

Is TARANG a river stage sensor or a radar level transmitter?

Yes. TARANG is a non-contact radar river stage sensor. It measures the water level to ± 1 mm and provides 4-20 mA, RS-485, RS-232, SDI-12, LoRa and MQTT outputs, so it works as a radar level transmitter feeding a logger or a hydromet telemetry station.

Can TARANG be the level sensor in a hydromet or telemetry station?

Yes. It can be the level sensor of a river gauge or telemetry station, sending readings over GSM (2G / 3G / 4G) or LoRa to your server or the ClimMaTech cloud, and it connects to existing loggers through its standard outputs.

How does a radar water level sensor compare with a float or ultrasonic sensor?

A radar sensor measures from above with no moving parts and does not sit in the water, unlike a float or submersible sensor. Unlike an ultrasonic sensor, its radio signal is not slowed by air temperature in the same way, and its narrow 8° by 8° beam looks at a small patch of water.

Where is TARANG made?

TARANG is designed, engineered and made in India by ClimMaTech. It is built for outdoor use anywhere, with an operating range of -40°C to +70°C and GSM (2G / 3G / 4G) connectivity.

Related reading

Technology · 9 min read
How FMCW radar measures water level: chirps, beat frequency, phase and the installed error budget
How a radar that never touches the river reaches millimetre precision, what limits it in the field, and why the accuracy on the datasheet is not the accuracy of the installed station.
Technology · 13 min read
Radar, ultrasonic, float and pressure water level sensors compared: physics, error budgets and field behaviour
How each of the four common stage sensors actually measures, where its error comes from, and what the standards and field studies say about each. With worked numbers.
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Rating curves: from stage to discharge, and how far to trust them
How a stage-discharge relation is built and fitted, why extrapolating it to a flood is where the largest errors hide, what makes it shift or loop, and what to do about all of it.

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