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Two-Color Infrared Temperature Measuring System

1. Wide range of temperature measurement, 600℃ ~ 1800℃

2. High measurement accuracy, ±0.5% FS

3. Large distance coefficient, up to 400:1 (100:1)

4. Small target measurement, can accurately measure the minimum 2mm target temperature

5. Fast response, up to 20ms

6. Instantaneous value, maximum value and average value are three ways of temperature measurement

7. 4MA ~ 20MA output, can be directly connected with standard digital display table, LED large-screen display, PLC, etc

8. Isolated RS485 digital output can form a network in which up to 32 temperature measuring instruments can be accessed to provide communication protocol and demonstration Software, facilitate the customer's secondary development

9. High brightness LED display, suitable for industrial field use

10. Coaxial laser aiming, easy to use, high accuracy

11. Telescopic sight aiming, clear and direct

Model:LM-SON2100

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Product Feature

The Infrared Temperature Measuring System LM-SON2100 is a high-performance two-color pyrometer specifically engineered for extreme industrial environments where conventional sensors fail. Designed for demanding applications in steel making, foundry operations, and metal processing, this advanced Infrared Temperature Measuring System delivers precise non-contact temperature measurement in the most challenging conditions.

Built to withstand harsh industrial environments with temperatures ranging from 600°C to 1800°C, the Infrared Temperature Measuring System maintains exceptional accuracy (±0.5% FS) even when measuring through dust, smoke, steam, or partially obstructed optical paths—common conditions in blast furnaces, ladle metallurgy, and continuous casting operations.

The impressive 400:1 distance coefficient enables safe remote monitoring of molten metal streams, furnace domes, and high-temperature processing zones from distances up to 4 meters while accurately measuring targets as small as 2mm. This is critical for operator safety in primary steel production and foundry applications where direct access is impossible or dangerous.

With an ultra-fast 20ms response time, the Infrared Temperature Measuring System captures rapid temperature fluctuations during induction heating, welding processes, and metal solidification, enabling real-time process control and quality assurance. The robust IP65-rated housing, combined with optional air or water cooling systems (withstanding ambient temperatures up to 150°C), ensures reliable operation in the most extreme metallurgical environments.

Product Parameter

Technical parameters	Analog output: A: 0V～5V, B: 4MA～20MA
Temperature measuring parameters	1. Temperature measurement range: 600℃ ~ 1800℃ 2. Measurement accuracy: ±0.5% FS 3. Repeat accuracy: ±0.3% FS or ±1℃ 4. Response time: ＜50ms, maximum resolution up to 20ms 5. Display temperature resolution 0.1℃ 6. RS485 output temperature resolution 1℃ 7. The current output temperature resolution is 0.1℃ 8. Shooting rate: adjustable from 0.10 ~ 1.00, step size: 0.01 9. Temperature measurement: instantaneous value (TEM), maximum value (MAX), average value (AVG) 10. Time interval: 1 ~ 30 seconds step length 1 second
Optical parameters	1. Operating band: 2.6μm 2. Aiming method: Coaxial laser aiming or telescope aiming 3. Range coefficient: 400:1 (100:1)
Technical Parameter	1. Power:24V DC ±10%, 100MA 2. Signal output: Analog current output: 4MA ~ 20MA 3. RS485 digital output: Baud rate: 9600, 1 starting bit, 8 data bit, no odd-digit parity, 1 stop bit
Working temperature	1. Working temperature: -10℃ ~ 60℃; Use air cooling up to 100℃; 2. Use water cooling up to 150℃; 3. Storage temperature up to 200℃: -20 ℃ ~ 80℃ 4. Protection level: IP65 5. Weight: 0.5KG 6. Dimension: Diameter 50mm, length 167mm

FAQs

Q1: Can this Infrared Temperature Measuring System accurately measure very small targets from a long distance?

A: Yes. This Infrared Temperature Measuring System features an impressive distance coefficient of up to 400:1 (with a 100:1 option also available). This allows the sensor to accurately measure small targets with a minimum size of just 2mm, even when mounted at a significant distance from the object.

This capability is essential for extreme industrial applications where the camera cannot be placed close to the heat source, such as:
• Blast furnace iron stream monitoring - measuring molten iron temperature from safe distances
• Ladle and tundish temperature control - monitoring liquid metal without sensor immersion
• Reheating furnace operations - tracking billet and slab temperatures through viewing ports
• Induction heating zones - precise measurement of heated areas from outside the coil

Q2: How does this Infrared Temperature Measuring System perform in dusty or smoky environments?

A: This Infrared Temperature Measuring System utilizes Two-Color (Ratio) technology, which calculates temperature based on the ratio of infrared energy at two different wavelengths. This method significantly reduces errors caused by dust, smoke, steam, or partial obstruction of the optical path—conditions commonly encountered in:

• Steel making furnaces where combustion gases and particulates are constant
• Foundry pouring operations with mold smoke and sand dust
• Hot rolling mills with scale and oxide particles in the air
• Welding and cutting processes generating intense smoke and sparks

Additionally, with a fast response time of 20ms, the system captures rapid temperature changes effectively, which is critical for process control in continuous casting and heat treatment operations.

Q3: What cooling options are available for this Infrared Temperature Measuring System in high-heat areas?

A: While the standard operating temperature is -10°C to 60°C, this Infrared Temperature Measuring System is designed for harsh environments. It supports optional air cooling (allowing operation up to 100°C) and water cooling (allowing operation up to 150°C). It can also be equipped with a thermal protective case for storage temperatures up to 200°C.

Typical extreme environment applications include:
• Furnace dome temperature monitoring - mounted near stove domes operating at 1200°C+
• Electric arc furnace operations - withstanding radiant heat from molten steel baths
• Reheating furnace zones - continuous exposure to 1000°C+ ambient temperatures
• Near ladle metallurgy stations - protecting sensors from molten metal radiation

The IP65 protection level ensures resistance to water spray and dust ingress common in foundry and steel mill environments.

Q4: Can this system measure temperature through sight glasses or protective windows?

A: Yes. The two-color ratio technology of this Infrared Temperature Measuring System allows accurate measurement through contaminated or dirty sight glasses, which is a common requirement in:

• Blast furnace stoves with protective viewing ports
• Vacuum degassing units requiring sealed observation windows
• Controlled atmosphere furnaces with quartz or sapphire windows
• Laser welding enclosures with protective glass barriers

Even when the window becomes dirty or partially obscured, the ratio measurement method compensates for signal attenuation, maintaining measurement accuracy without frequent cleaning interruptions.

Q5: How fast can this system respond to temperature changes in dynamic processes?

A: With a response time of ≤50ms (maximum resolution up to 20ms), this Infrared Temperature Measuring System is ideal for capturing rapid temperature transients in:

• Continuous casting - monitoring strand surface temperature during solidification
• Induction hardening - tracking heating and quenching cycles in real-time
• Hot rolling - measuring strip temperature between mill stands
• Forging operations - controlling billet temperature before and during deformation

The adjustable shooting rate (0.10 to 1.00, step size 0.01) allows optimization for specific process dynamics, while the 4-20mA analog output and RS485 digital communication enable seamless integration with PLC-based control systems.

Q6: What output options are available for integration with industrial control systems?

A: The Infrared Temperature Measuring System provides multiple output options for comprehensive process monitoring and control:

Analog Outputs:
• Channel A: 0V ~ 5V for direct PLC input
• Channel B: 4MA ~ 20MA for long-distance signal transmission in noisy industrial environments

Digital Communication:
• Isolated RS485 output (Baud rate: 9600, 8 data bits, 1 stop bit, no odd-digit parity)
• Supports networking of up to 32 temperature measuring instruments
• Provides communication protocol and demonstration software for customer secondary development

This flexibility enables integration with DCS systems, SCADA systems, data acquisition systems, and standard digital displays for operator visibility.

Q7: Is this system suitable for measuring molten metal temperatures?

A: Absolutely. The LM-SON2100 Infrared Temperature Measuring System is specifically designed for molten metal applications:

Temperature Range: 600°C ~ 1800°C covers:
• Aluminum casting (660°C - 750°C)
• Copper and brass melting (1000°C - 1200°C)
• Steel making (1500°C - 1800°C)
• Cast iron production (1200°C - 1500°C)

Key Advantages for Molten Metal:
• Non-contact measurement eliminates sensor contamination and extends service life
• Two-color technology compensates for varying emissivity of liquid metal surfaces
• Large distance coefficient allows safe mounting away from splashing and spattering
• Fast response captures temperature changes during tapping and pouring operations

Applications include ladle temperature monitoring, tundish control, mold level temperature profiling, and tap stream measurement.

Q8: What maintenance is required for operation in extreme industrial environments?

A: The Infrared Temperature Measuring System is designed for minimal maintenance in harsh conditions:

Routine Maintenance:
• Periodic lens cleaning (frequency depends on environmental contamination level)
• Verification of cooling system operation (air pressure or water flow)
• Cable and connection inspection in high-vibration areas

Preventive Features:
• IP65 housing protects against dust and water spray
• Optional air purge prevents dust accumulation on optics
• Water cooling jacket extends sensor life in high radiant heat zones
• Coaxial laser aiming or telescope aiming for quick alignment verification

Expected Service Life: With proper installation and cooling, the system typically operates for 3-5 years in extreme environments before requiring major service, significantly reducing downtime compared to contact thermocouples in molten metal applications.