Optris CTi Series

The next-gen industrial standard for pyrometers:

Built on what works, ready for what’s next

What makes the CTi series
the right choice for automation
and control applications?

Industrial leading compact pyrometer with modular two-piece architecture
Competitive price point without compromising the excellent measurement accuracy
Wide range of spectral response options to optimize for any application
Extreme ambient temperature resilience up to 250 °C
ATEX version
Proven Reliability – Built for harsh industrial environments
Built-in USB interface for commissioning via PC or smartphone
Multiple analog and alarm outputs: 0/4–20 mA, 0–5 V, 0–10 V, thermocouple type K
Extensive digital communication protocols: EtherNet/IP, Profinet, IO-Link, EtherCAT, Ethernet TCP/Modbus TCP, Modbus RTU, RS485, RS232
Made in Germany

CTi LT — General-Purpose Pyrometer
for Diverse Materials

Compact Two-piece Industrial Infrared Pyrometer

CTi LT

The Optris CTi LT combines one of the world’s smallest sensing heads with a high 22:1 optical resolution and versatile connectivity, including selectable analog outputs and various digital interfaces for flexible industrial integration.

Compact Two-piece Industrial Pyrometer with

High Operating Temperature Rating

CTi LThot

The Optris CTi LThot is specifically engineered for extreme environments, allowing the infrared sensor to operate reliably in ambient temperatures up to 250 °C without the need for additional cooling systems.

Compact Two-piece Industrial Infrared Pyrometer for fast temperature measurements

CTi LTfast

The Optris CTi LTfast is a compact, high-speed infrared sensor offering response times of 6 to 30 ms and instant 0–10 V output, specifically designed for monitoring high-emissivity targets on fast-moving packaging and conveyor lines.

CTi xM for Metal Applications

Compact Two-piece Industrial Infared Pyrometer for very high-temperature Metals

CTi 1M

Optimized for metallic targets above 485°C, the Optris CTi 1M uses a short 1.0 µm wavelength to provide superior stability and accuracy up to 2200°C by minimizing errors from emissivity and background reflections.

Industrial IR Pyrometer for Low Temperature Metal and Composite Applications

CTi 3M

The Optris CTi 3M offers a short/mid wavelength for low-temperature metal and composite measurements starting at 30 °C, featuring an ultra-fast 320 µs response time and versatile connectivity for high-speed industrial processes.

Compact Two-piece Industrial Infared Pyrometer for hot Metals and Ceramics

CTi 2M

Operating at 1.6 µm, the CTi 2M is optimized for uncoated metal surfaces from 150 °C to 2000 °C, using a short wavelength to minimize measurement errors caused by emissivity changes and background reflections.

Compact Two-piece Industrial IR Pyrometer for Low-Temperature and High-Speed Applications

CTi 4M

The Optris CTi 4M is an ultra-fast infrared thermometer with a 110 µs response time, specifically designed for high-speed processes and materials like metals or ceramics within a 0 °C to 500 °C range.

CTi for Glass Temperature Measurement

Compact Two-piece Industrial Infared

Pyrometer for Glass

CTi G5

The Optris CTi G5 operates at 5 µm to measure glass temperatures approximately 1 mm below the surface, effectively minimizing measurement errors caused by reflected background radiation for more reliable process monitoring.

CTi for Thin Film Plastics Foils

Compact Pyrometer for Thin Film Plastics
like PE, PP and PS

CTi P3

The Optris CTi P3 operates at 3.43 µm to make thin plastic films like polyethylene and polypropylene opaque for infrared measurement, ensuring accurate temperature monitoring of materials that are otherwise transparent to standard sensors.

Compact Pyrometer for Thin Film Plastics
like PET, PU, PTFE, PFA, PI or CTA

CTi P7

The Optris CTi P7 operates at 7.9 µm to accurately measure the surface temperature of thin plastic films and foils (under 250 µm) like PET and PTFE that are otherwise transparent to standard sensors.