Online Infrared Thermometer IRK 3M

IRK 3M Series

The IRK 3M is a 2.3 micron infrared pyrometer built for shiny and reflective metal surfaces. Its 2.3µm short wavelength gives accurate non-contact readings on low-emissivity targets from 50°C to 600°C, where long-wave models struggle, and supports continuous monitoring with a 140:1 ratio.

2.3µm short wavelength
Reads shiny / reflective metal
Non-contact continuous monitoring
Range factor up to 140:1
IP65 stainless steel body

Temperature range review

Surface emissivity check

Spot size guidance

Output selection help

Commissioning support

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https://www.tipl.com/wp-content/uploads/2026/06/IRK3M-1.pdf

2.3 micron infrared pyrometer for shiny or reflective surfaces
SUS304 stainless steel outer barrel
High-quality optical lenses
Range factor up to 140:1
Measures temperatures as low as 50°C
Short 2.3µm wavelength for low-emissivity metal targets
Two variants: 3ML and 3MS
Non-contact, continuous measurement with 5 ms response time
4–20 mA analog output and RS485 digital communication
Coaxial laser aiming for precise targeting
IP65 protection rating
Standard software included; customization available

Shiny and reflective metal surface measurement
Aluminium and bright metal temperature monitoring
Low-emissivity metal target measurement
Metal processing and finishing lines
Heat treatment and annealing monitoring
Foundry and casting applications
Continuous process temperature control
Quality control on reflective targets
Long-distance reflective surface measurement
Industrial process temperature monitoring

Model: IRK 3M Series
Product Type: 2.3 Micron Online Infrared Pyrometer
Variants: 3ML, 3MS
Temperature Range: 3ML 50°C–400°C; 3MS 100°C–600°C
Accuracy: ±(0.5% reading + 2)°C
Repeatability: ±(0.3% reading + 1)°C
Spectral Response: 2.3 µm
Optical Resolution: 3ML up to 60:1; 3MS up to 140:1
Temperature Resolution: 0.1°C
Response Time: 5 ms
Emissivity: 0.100–1.100 (software adjustable), preset 1.000
Transmittance: 0.100–1.000 (software adjustable), preset 1.000
Analog Output: 4–20 mA
Digital Output: RS485 (Modbus RTU)
Laser Aiming: Coaxial laser aiming (<1mW 650nm laser class II)
Operating Voltage: 24VDC ±20%
Protection Level: IP65 (NEMA-4)
Operating Temperature: -10°C to +70°C
Storage Temperature: -20°C to +80°C
Operating Humidity: 10%–95% (no condensation)
Cable Temperature Resistance: -20°C to +80°C PVC
Cable Length: 3 m standard, 5 m, 10 m optional
Material: Stainless Steel 304
Weight: 235 g (excluding cable)

Comprehensive Services Using This Product

From installation to ongoing support, we’re with you every step of the way.

Calibration

Precise calibration ensuring measurement accuracy and compliance.

Installation & Commissioning

Seamless setup ensuring optimal system performance.

Annual Maintenance Contract

Reliable year-round equipment care and support.

Industries Using This Product

Our solutions are trusted by top industries to drive growth and improve operations.

Steel

Advanced monitoring systems for efficient steel production, ensuring product consistency and safety.

Metals

Advanced monitoring systems for efficient metal production, ensuring product consistency and safety.

Power

Optimizing power plant operations with real-time monitoring and predictive maintenance solutions.

Cement

Precision measurement and control solutions for efficient cement production and quality control.

Glass

Advanced instrumentation to ensure precise control and quality in glass manufacturing.

What Customers Say About Us

Trusted Engineering Support

The team provided clear technical guidance and practical solutions. Execution was smooth and well coordinated throughout.

Mr. Vivek NairGeneral Manager – Operations, Cement Industry

Dependable Technical Partner

Their approach was systematic and aligned with our plant needs. Overall experience with product and service has been positive.

Ms. Kavita RaoSenior Manager – Maintenance, Steel Sector

Application-Focused Solutions

They understood our process conditions before recommending equipment. Support during installation was handled professionally.

Mr. Rohan MehtaProject Lead – Power Plant

Consistent Service Delivery

Product performance has been stable in regular operations. The support team responds in a timely manner.

Mr. Anil DeshmukhInstrumentation Head, Process Manufacturing

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Clients Who Have Transformed Their Operations with This Product

Frequently Asked Questions About This Product

A 2.3 micron infrared pyrometer measures temperature using a 2.3µm wavelength. This short wavelength reduces error on shiny, reflective and low-emissivity metal surfaces, which long-wave pyrometers read less accurately.

The 2.3µm wavelength improves accuracy on reflective and low-temperature metal targets, so the IRK 3M suits aluminium and bright metal that other models struggle to measure.

3ML covers 50°C–400°C and 3MS covers 100°C–600°C, depending on the selected variant.

3ML offers up to 60:1 and 3MS offers up to 140:1 optical resolution.

Yes. It measures reflective metal without contact, which suits continuous monitoring of bright or moving targets.

The IRK 3M provides a 4–20 mA analog output and RS485 Modbus RTU digital communication.

Users should check target temperature, surface emissivity, spot size at distance, mounting condition and output requirement.

Download Resources

Online Infrared Thermometer IRK 3M

IRK 3M Series

Still Confused What to Buy?

Need help deciding? Download resources to know more about the product.

Comprehensive Services Using This Product

Calibration

Installation & Commissioning

Annual Maintenance Contract

Industries Using This Product

Steel

Steel

Metals

Metals

Power

Power

Cement

Cement

Glass

Glass

What Customers Say About Us

Trusted Engineering Support

Dependable Technical Partner

Application-Focused Solutions

Consistent Service Delivery

Insights & News

Dissolved Oxygen Measurement in Boiler Feedwater Systems

Why Does a Radar Level Transmitter Give False or Unstable Readings?

Clients Who Have Transformed Their Operations with This Product

Frequently Asked Questions About This Product

What is a 2.3 micron infrared pyrometer?

Why does the IRK 3M use a 2.3 micron wavelength?

What temperature range does the IRK 3M cover?

What optical resolution does the IRK 3M offer?

Is the IRK 3M non-contact?

What output signals does the IRK 3M provide?

What should users check before selecting the IRK 3M?

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