Longwave Radiation Sensor for Accurate Climate Monitoring

Key Features

Designed for Longwave Radiation Measurement: Measures hemispherical incoming or outgoing longwave radiation with high accuracy.
Advanced MEMS Thermopile Technology: Uses modern thermopile manufacturing technology to deliver fast response, excellent consistency, and high reliability.
Fast Response Performance: Response time is ≤10 seconds, helping users capture changes in radiation conditions more quickly.
Stable Internal Resistance: Internal resistance is maintained at 10–30Ω, which supports faster sensor response and reliable signal output.
Multiple Output Options: Supports 0–20mV, 4–20mA, and RS485 output for easy connection to data loggers, controllers, and monitoring systems.
Built In RS485 Output Module: The integrated RS485 module reduces installation complexity and eliminates the need for extra external conversion devices.
Wide Spectral Range: Spectral range of 3500–50000nm, suitable for longwave radiation monitoring applications.
Rugged Outdoor Design: Built to operate in harsh environments with an operating temperature range of -40°C to 80°C.
High Environmental Adaptability: Supports outdoor use in humid environments with 0–100% RH operating humidity.
Suitable for Continuous Monitoring: Ideal for long-term deployment in fixed environmental and climate monitoring stations.

Product Description

1. Description

JW-TBL-1L(LC18) Longwave Radiation Sensor is a high-precision instrument designed to measure hemispherical incoming or outgoing terrestrial longwave radiation. Built for meteorology, environmental monitoring, agricultural research, and energy balance studies, it offers stable performance, fast response, and multiple output options including 0–20mV, 4–20mA, and RS485. With a rugged design and wide operating temperature range, it is ideal for long-term outdoor deployment.

2. Product Overview

JW-TBL-1L(LC18) Longwave Radiation Sensor is engineered for users who need reliable and accurate longwave radiation data in outdoor environments. Also known as a terrestrial radiation sensor, this device is used to monitor longwave radiation emitted from the atmosphere, land surface, or surrounding objects.

Designed with advanced MEMS thermopile technology, the sensor combines high consistency, fast response, and long-term stability. Its integrated structure simplifies installation and maintenance, while the built-in RS485 output module allows seamless integration into existing monitoring systems without requiring an external converter.

This sensor is widely used in meteorological stations, agricultural observation sites, rooftop radiation monitoring, environmental research, climate studies, and surface energy balance analysis.

Parameter	Specification
Product Name	Longwave Radiation Sensor
Model	JW-TBL-1L(LC18)
Spectral Range	3500–50000nm
Measurement Range	0–2000W/m²
Response Time	≤10s
Internal Resistance	10–30Ω
Cosine Error / Residual	≤ ±5%
Weight	0.8kg
Output Signal	0–20mV 4–20mA RS485
Annual Stability	±2% within one year
Non Linearity	≤ ±2%
Temperature Characteristic	±2% at -20–40°C
Operating Temperature	-40–80°C
Operating Humidity	0–100% RH

3. Output Options and Communication

The sensor supports flexible output modes for different monitoring systems:

0–20mV output for traditional analog signal acquisition
4–20mA output for industrial control and long-distance transmission
RS485 output for digital communication and direct integration into automation systems

The built-in RS485 module helps reduce wiring complexity and installation cost, making the sensor easier to deploy in integrated environmental monitoring systems.

4. Application Scenarios

Meteorological observation stations
Climate and atmospheric research
Agricultural meteorology
Surface energy balance studies
Environmental monitoring projects
Rooftop radiation monitoring systems
Research institutes and universities
Smart agriculture monitoring stations
Ecological observation networks
Long-term outdoor radiation measurement

FAQ

Q

1. What does a longwave radiation sensor measure?

A

A longwave radiation sensor measures hemispherical incoming or outgoing terrestrial longwave radiation, helping users analyze atmospheric radiation, surface radiation, and energy balance.
Q

2. What industries can use the TBL-1L Longwave Radiation Sensor?

A

It is suitable for meteorology, agriculture, environmental monitoring, scientific research, rooftop monitoring, and climate studies.
Q

3. Does JW-IoT Automation TBL-1L support digital communication?

A

Yes. JW-IoT Automation TBL-1L supports RS485 communication, making it easy to integrate into digital monitoring systems.
Q

4. What output signals are available?

A

The sensor supports 0–20mV, 4–20mA, and RS485 outputs.
Q

5. Is the sensor suitable for outdoor installation?

A

Yes. It is designed for outdoor use and supports an operating temperature range of -40°C to 80°C and 0–100% RH humidity.
Q

6. Why choose JW-IoT Automation longwave radiation sensors?

A

JW-IoT Automation longwave radiation sensors offer stable performance, fast response, flexible outputs, and reliable outdoor operation, making them suitable for demanding field applications.
Q

7. What is the response time of this sensor?

A

The response time is ≤10 seconds, allowing fast detection of radiation changes.
Q

8. Can JW-IoT Automation TBL-1L be used in meteorological stations?

A

Yes. JW-IoT Automation TBL-1L is well suited for meteorological stations, climate observation sites, and environmental monitoring networks.
Q

9. What is the spectral range of the sensor?

A

The spectral range is 3500–50000nm, covering longwave radiation monitoring requirements.
Q

10. Does this product require an external converter for RS485?

A

No. The sensor features a built-in RS485 output module, so external conversion equipment is not required in many applications.
Q

11. Is this longwave radiation sensor suitable for research applications?

A

Yes. Its stable performance and fast response make it a good choice for research institutes, universities, and scientific observation projects.
Q

12. Can JW-IoT Automation provide a longwave radiation sensor for integrated monitoring systems?

A

Yes. JW-IoT Automation longwave radiation sensors are designed for integration with data loggers, weather stations, environmental monitoring systems, and industrial control platforms.