Infrared Thermometers & Pyrometers

In the most demanding thermal environments, where others falter, the Optris CTi LThot stands resilient. Designed to excel in extreme ambient conditions, this robust infrared pyrometer features a sensing head engineered for unparalleled temperature resistance, operating reliably without additional cooling at ambient temperatures up to 250 °C. This critical advantage makes it the definitive choice for processes where heat is a constant, unforgiving presence.

The CTi LThot masterfully tackles high-temperature applications across diverse industries. From monitoring dryers, industrial furnaces, and heat-treating ovens to ensuring precision in plastics/textiles processing and semiconductor production, it delivers steadfast performance. Encased in a compact, durable stainless steel housing, it offers non-contact temperature measurement from –50 °C to 1050 °C within the spectral range of 8 to 14 µm, ideal for many materials including plastics and organic substances. With a swift response time down to 40 ms, it captures even rapid thermal fluctuations with industrial-standard precision and speed.

Beyond its core resilience, the CTi LThot is a powerhouse of connectivity and control. It features analog and digital outputs (including 0-4-20 mA and 0-10 V), comprehensive interfaces (USB, RS485, RS232, relay , Modbus RTU, Modbus TCP, Profinet, and EtherNet/IP ), and relay outputs. Three programmable I/Os offer versatile functionality for alarms, triggering, or external parameter adjustment. Configuration is seamless via free PC software or a mobile app. Developed, produced, and calibrated in Germany with rigorous end-of-line checks, it guarantees superior quality and accuracy. Supported by a wide range of accessories, the Optris CTi LThot is the robust, reliable solution for the harshest industrial landscapes.

CTi LThot — Important Features

• - Temperature range: -50 °C to 1050 °C
• - Spectral range: 8 to 14 µm
• - Response time: down to 40 ms
• - High operating temperature rating up to 250 °C

The Optris CTi LTfast pyrometer quickly captures non-contact temperature data remotely. Its remarkably short response time of 6 ms makes it an ideal choice for applications requiring speedy measurements. Whether in industrial processes demanding rapid assessments or research settings mandating precise temperature control, the CTi LTfast pyrometer delivers consistent performance. Its adaptability and accuracy are tailored to be the sensing input for fast control loop applications. It offers fast analog output options with smart data processing, alongside instant digital output with a response time of 4 ms (50% signal). Additionally, its rugged construction allows operation in ambient temperatures of up to 125 °C without the need for cooling, ensuring resilience in challenging conditions.

• - Temperature range: -50 °C to 1050 °C
• - Spectral range: 8 to 14 µm
• - Response time: 6 ms (% signal)
• - High Distance-to-spot size ratio of up to 25:1

Engineered in Germany for reliability, the Optris CTi LT series is a breakthrough in compact, high-performance infrared temperature measurement. These pyrometers feature one of the world’s smallest sensing heads along with strong industrial capabilities. They deliver precise non-contact temperature monitoring for even the toughest applications.

The CTi LT has a superior 8–14 µm spectral bandwidth. It is best for measuring high-emissivity materials and low-temperature targets with great accuracy. With a wide measurement range from -50 °C to 1050 °C, it works well for non-reflecting objects in various industrial processes. Additionally, its excellent optical resolution of up to 22:1 ensures accurate readings of small or distant targets while reducing background interference.

Built to withstand tough conditions, the CTi LT operates reliably at ambient temperatures up to 180 °C without requiring external cooling. Moreover, its special thermal-shock-resistant design ensures long-term stability, repeatability, and accuracy. The device allows for flexible integration using configurable analog and digital outputs, including industrial protocols like Modbus RTU, Modbus TCP, Profinet, and EtherNet/IP. Additionally, setting it up is easy with the free CompactPlus Connect PC software or the IR mobile app for Android.

Developed, produced, and factory-calibrated in Germany, the CTi LT comes with a range of accessories. In addition to mounting forks, sighting tubes, and close-focus lenses, these include air purge systems to suit any industrial environment. Whether used for plastics, coatings, electronics, or automotive manufacturing, the Optris CTi LT offers a dependable, precise, and versatile solution for critical temperature monitoring.

CTi LT — Important Features

• - Temperature range: -50 °C to 1050 °C
• - Spectral range: 8 to 14 µm
• - Response time: up to 40 ms
• - High ambient temperature rating up to 180 °C
• - Higher Distance-to-spot size ratio of up to 22:1
• - Unique thermal shock-resistant design for best repeatability and accuracy

The Optris CTi 1M pyrometer accurately measures temperatures from 350 °C to 2200 °C across different variants. Its specialized spectral range, compact size, and rapid response time make it well suited for hot-metal temperature measurement applications. These pyrometers are ideally suited for employment in high-temperature measurements of metals, metal oxides, and ceramics. The infrared pyrometer’s short measurement wavelength of 1.0 µm further reduces measurement errors caused by low or varying emissivity. Optris particularly recommends short-wavelength pyrometers due to their robustness against these influences, ensuring stable and reliable performance, especially in hot-metal processing applications. The pyrometer series offers adaptability with various versions offering different temperature ranges and analog or digital outputs. Optional accessories enhance functionality, meeting diverse industrial needs.

• - Temperature range: 350 °C to 2200 °C
• - Spectral range: 1.0 µm
• - Response time: 320 µs
• - Exposure time: 110 µs

The Optris CTi 2M infrared pyrometer utilizes short-wavelength measurement technology at 1.6 µm to provide precise non-contact temperature measurement in demanding hot-metal applications. This short spectral range significantly reduces measurement errors caused by low or varying emissivity, ensuring stable and repeatable results. An advanced InGaAs detector enables accurate temperature measurement of metals, metal oxides, ceramics, and semiconductor materials at high temperatures. With a distance-to-spot ratio of up to 75:1, the pyrometer delivers reliable measurements of small targets even from extended distances. Its compact design and fast response time of 320 µs make the CTi 2M well suited for integration into high-speed industrial processes and heavy machinery.

• - Temperature range: 150 °C to 2000 °C
• - Spectral range: 1.6 µm
• - Response time: 320 µs
• - Exposure time: 110 µs

The Optris CTi 3M pyrometer is a reliable, non-contact temperature measurement solution. It is specifically engineered for accurate temperature measurement of challenging materials in low-temperature environments, with optimized performance for metal processing applications. The device is designed to operate reliably in demanding industrial conditions, covering a broad temperature range from 30 °C to 1850 °C. At the core, the Optris CTi 3M pyrometer features a miniaturized infrared thermometer operating at a wavelength of 2.3 μm. This precision instrument enables accurate temperature measurements of metals, secondary metal processing, metal oxides, and ceramic materials. Whether utilizing the 3MXL model for temperature ranges between 30 °C and 350 °C or the 3MH3 model capable of measuring up to 1850 °C, the system offers precise temperature measurement for various applications.

CTi 3M — Important Features:

• - Temperature range: 300 °C to 1850 °C
• - Spectral range: 2.3 µm
• - Exposure time: 110 µs

The CTi 4M high-speed infrared thermometer features an exceptionally fast exposure time of 110 μs, making it ideally suited for precise temperature measurement in high-speed or rapidly changing processes. Due to its unique mid-wavelength sensitivity and a temperature range from 0 °C to 500 °C, the pyrometer optris CTi 4M is suitable for measurements across various materials, like metals, metal oxides, ceramics or any material with unknown or changing emissivity.

This pyrometer is a great alternative to LT sensors for high speed and low-temperature applications of challenging materials. The electronics box of the measuring device allows a flexible terminal device through selectable analog outputs as well as various optional digital interfaces.

CTi 4M — Important Features:

• - Temperature range: 0 °C to 500 °C
• - Spectral range: 2.2 µm - 6.0 µm
• - Response time: 320 µs

The Optris CTi G5 pyrometer is designed for precise temperature measurement in glass-related industries, featuring a two-piece sensor design with a separate electronic box for integration-friendly operation.

The IR thermometer accurately measures temperatures from 50 °C to 1650 °C, suitable for vehicle and flat glass manufacturing. Emissivity plays a crucial role in accuracy, influenced by material properties and wavelength. For glass production, wavelengths of 5.0 μm or 7.9 μm are preferred due to higher emissivity values. Wavelength selection is vital for measuring surface and deeper layers effectively.

The CTi G5's specialized spectral range of 5.0 μm makes it versatile for various industrial processes, with its compact design allowing for flexible installations.

CTi G5 — Important Features:

• - Temperature range: 50 °C to 1650 °C
• - Spectral range: 5.0 µm
• - Response time: down to 70 ms

The Optris CTi P3 pyrometer is designed for precise temperature measurement of thin plastic films, utilizing a spectral range of 3.43 µm for accuracy between 35 °C and 600 °C.

While plastics thicker than 0.4 mm and pigmented films are easily measured in the long-wavelength IR spectral range, very thin plastic films are transparent in this spectral range. Therefore, thin foil plastics require specific narrow-band sensitive IR sensors that match material-specific absorption bands in the IR spectrum to measure their temperature.

The IR thermometer has a rapid response time of 15 ms and can withstand temperatures up to 85 °C. Its electronics box offers various outputs, and optional accessories enhance functionality for industrial use.

CTi P3 — Important Features:

• - Temperature range: 35 °C to 600 °C
• - Spectral range: 3.43 µm
• - Response time: 15 ms

The Optris CTi P7 pyrometer is tailored for non-contact temperature measurement of thin plastics, spanning from 0 °C to 710 °C. Its 7.9 µm spectral region ensures precise readings, with a temperature-resistant head capable of withstanding up to 85 °C without cooling.

With a rapid 150 ms response time, it enhances efficiency in industrial processes, especially during thin plastic foil production. Emissivity adjustments cater to varying material thicknesses, with plastics like Fluoroplastic (FEP), Polyimide (PI), Acrylic (PMMA), and others exhibiting opacity at 7.9 μm, facilitating easy measurement with the CTi P7.

This feature-rich pyrometer offers accuracy and adaptability for diverse industrial temperature monitoring needs.

CTi P7 — Important Features:

• - Temperature range: 0 °C to 710 °C
• - Spectral range: 7.9 µm
• - Response time: 150 ms