Compact Two-piece Industrial Infrared Pyrometer with High Operating Temperature ,-50-1050°C

The Optris CTi LThot is specifically designed for extreme high-temperature industrial environments where standard sensors may fail. Its key advantage is a highly heat-resistant sensing head that can operate in ambient temperatures up to 250 °C without additional cooling, making it ideal for demanding applications such as dryers, furnaces, heat treatment systems, plastics processing, textiles, and semiconductor manufacturing

The CTi LThot delivers precise and fast temperature measurement across a wide range of –50 °C to 1050 °C, within the spectral range of 8 to 14 µm and a rapid 40 ms response time for detecting fast thermal changes. Available with 10:1 or 2:1 optics, it offers flexibility for different installation requirements.

It has analog and digital outputs, including 0-4-20 mA and 0-10 V. It features multiple interfaces such as USB, RS485, RS232, relay, Modbus RTU, Modbus TCP, Profinet, and EtherNet/IP. Three programmable I/Os allow for flexible use with alarms, triggers, or adjusting external parameters. Configuring it is easy thanks to free PC software and mobile app.

• Temperature range: -50 °C … 1050 °C
• Ambient temperature: –20 °C ... 250 °C (sensing head), –20 °C ... 85 °C (electronics)
• Spectral Range: 8-14 μm
• Distance-to-spot size ratio: 2:1 ,10:1
• Smallest spot size: 3.0 mm @30 mm (LThot 10:1 CF1 lens)
• Measurement uncertainty: ±1.5 °C or ±1 %
• Temperature resolution display): 0.1 K
• NETD: 37 mK (LThot 2:1), 45 mK (LThot 10:1)
• Response time : 45 ms (LThot 2:1), 40ms (LThot 10:1)
• Emissivity / Gain (Via programming keys or software): 05 – 1.100
• Transmissivity / Gain (Via programming keys or software): 05 – 1.100
• Signal processing: Peak hold, valley hold, average, extended hold function with threshold and hysteresis.
• Output / analog (2X): 0 / 4 – 20 mA, 0 – 5 / 10 V, thermocouple K, alarm
• Output / alarm: 24 V / 50 mA (open collector)
• Relay outputs (optional): 2 x 60 V DC/ 42 V AC RMS; 0.4 A; optically isolated
• Digital Interfaces: built-in USB-interface, Optional: EtherNet/IP, Profinet, EtherCAT, Ethernet TCP/IP / Modbus TCP, Modbus RTU, RS485, RS232 or relay outputs (2 x optically isolated)
• Output impedances: mA max. 500 Ω (with 8 – 36 V DC) mV min. 100 kΩ load impedance thermocouple 20 Ω
• I/O Pins (3X): flexible programming as in- or output: external emissivity adjustment, ambient temperature compensation, uncommitted value, trigger (reset of hold functions), alarm output (open collector 24 V/ 50 mA)
• Cable length: 3 m (standard), 8 m, 15 m
• Software / App: Optris CompactPlus Connect / IRmobile App
• Power supply: 8 - 30 V DC / 1.2W

Scope of Supply:

• CTi with mounting nut
• 1m high temp. head cable
• Electronic box with LCD display and programming keys
• Quick start guide
• 1,5 m USB-C cable incl. adapter USB-A

Supplier links:

https://optris.com/products/infrared-thermometers-pyrometers/cti-series/cti-lthot/