Name: CTi LThot
SKU: OPTCTILTH
Availability: InStock

Compact Two-piece Industrial Infrared Pyrometer with High Operating Temperature Rating

In the toughest thermal environments, where others struggle, the Optris CTi LThot stays strong. It is built to work well in extreme conditions. This sturdy infrared pyrometer has a sensing head designed for excellent temperature resistance. It operates reliably without extra cooling at ambient temperatures up to 250 °C (482 °F). This key benefit makes it the top choice for processes where heat is a constant, harsh factor.

The CTi LThot effectively handles high-temperature tasks in various industries. It monitors dryers, industrial furnaces, and heat-treating ovens. It also ensures precision in processing plastics and textiles, as well as in semiconductor production. This device performs consistently. Housed in a compact, durable stainless steel case, it measures temperature from –50 °C to 1050 °C (-58 °F to 1922 °F) within the spectral range of 8 to 14 µm. This range is suitable for many materials, including plastics and organic substances. With a quick response time of 40 ms, it detects rapid thermal changes accurately and quickly.

In addition to its strength, the CTi LThot offers great connectivity and control. 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 or a mobile app. Developed, produced, and tested in Germany, it ensures high quality and accuracy. With a wide range of accessories, the Optris CTi LThot is the strong, reliable solution for the toughest industrial settings.

CTi LThot — Important Features:

Temperature range: -50 °C to 1050 °C (-58 °F to 1922 °F)
Distance-to-spot size ratio: up to 10:1
Response time: down to 40 ms
Spectral range: 8 to 14 µm
Operating temperature: -20 °C to 250 °C (-4 °F to 482 °F)

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Optris Introduces New Models to the CTi Pyrometer Series

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Product Description

The Optris CTi LThot pyrometer is engineered to thrive in extreme conditions within high-temperature environments, boasting exceptional temperature resistance of the sensing head. Operating in ambient temperatures of up to 250 °C without additional cooling presents no challenges for this infrared thermometer, making the pyrometer particularly suitable for integration into machines across various applications, including dryers, furnaces, heat-treating processes, plastics and textiles processing, and semiconductor production.

The Optris CTi LThot series offers temperature measurement capabilities ranging from –50 °C to 1050 °C with a response time down to 40 ms. Selectable 10:1 or 2:1 optics and a compact sensor head size further enhance its versatility.

The separate control box of the CTi LThot provides high variability with selectable analog outputs and several digital interfaces. Its unique advantages for installation in applications with high surrounding temperatures stem from a robust and ambitious design, allowing operation of the sensing heads for temperatures up to 250 °C without additional cooling. The compact stainless steel housing, measuring 29 mm in diameter and 55 mm in length, ensures durability in harsh conditions. The infrared pyrometer minimizes thermal gradients along the sensor head, optimizing thermal shock resistance for accuracy and repeatability in rapidly changing ambient temperatures.

Manufactured in Germany to meet stringent quality requirements, these pyrometers undergo meticulous calibration to government standards such as PTB or NIST. Customization options, including different cable sizes, are available for large-quantity OEM customers. Optris offers comprehensive support, including consultation on industrial applications and after-sales assistance. Additionally, upon request, the IR thermometers can be provided in an explosion-safe design with an ATEX certificate.

The adaptability of the Optris CTi LThot series is further emphasized by the range of analog and digital outputs provided by the electronics box, including 0/4 – 20 mA, 0 – 5 V, 0 – 10 V, thermocouple (type K), USB, RS485, RS232 interface, relay outputs (2 x optically isolated), Modbus RTU, Modbus TCP, Profinet, and EtherNet/IP. This adaptability facilitates seamless integration into machinery, enhancing utility across various applications.

The Optris CTi LThot series sets an industrial standard for non-contact temperature measurement, emphasizing precision and speed. Featuring a two-piece design, an optical resolution of up to 10:1, this infrared thermometer is optimized for efficient monitoring across diverse industrial applications. Its exceptional temperature resistance, precise non-contact temperature measurement, and adaptability underscore its utility and reliability in critical industrial processes. Optional accessories, such as mounting forks, sighting tubes, close-focus lenses, air purge accessories, and cooling jackets, further enhance its functionality, offering tailored solutions for varied industrial scenarios. In summary, the Optris CTi LThot series pyrometer combines precision, adaptability, and durability to facilitate non-contact temperature measurements in diverse industrial applications.

Specification

MODEL

CTi LT02 hot

CTi LT10 hot

DETECTOR
Detector	Thermopile
Measurement Principle	Single Color
Spectral Range	8 – 14 µm
Response Time	45 ms	40 ms
Exposure Time	45 ms	40 ms
Sampling Frequency	22 Hz	25 Hz
Exchangable Sensing Head	No

OPTICAL
Distance to Spot ratio (D:S)	2:1	10:1
Spot size (SF optics)	200 mm at 400mm	40 mm at 400mm
Other optics (FF/CF optics / add. CF lens)	–	CF1: 3 mm at 30 mm
Focus	fixed

SIGHTING
Laser Sighting	none
Video Sighting	none

MEASUREMENT
Object Measurement Range	-50°C … 1050°C	-50°C … 1050°C
Accuracy	± 1.5°C or ± 1% **2)
Repeatability	± 0.13°C or ± 0.1% **2)	± 0.16°C or ± 0.1% **2)
Temperature Coefficient	± 0.05 K/K oder ± 0.05 % / K **2)
Thermal Sensitivity (NETD)	37 mK	45 mK
Warm-up time	10 min
Emissivity /Transmissivity/ Reflectivity	0.05 – 1.100
Slope	N/A

INTERFACES
Interface	USB-C (built-in) / RS232 / RS485 / Ethernet / Relay
Supported Protocols	USB 2.0, Optional: EtherNet/IP / Ethernet TCP / Modbus TCP / Modbus RTU / Profinet
Compatible Software	CompactPlus Connect, IRmobile (latest Version)

ANALOG INPUT/OUTPUT
Direct output/input	0-20 mA/4-20 mA/0-5 V/0-10 V/t/c (K/J)
Output impedances	max. 500 Ω (with 8-36 V DC) for mA output min. 100 kΩ load impedance for mV output thermocouple 20 Ω
Cable length	3 m (standard), 8 m, 15 m

SIGNAL PROCESSING
Configuration	CompactPlus Connect or IRmobile (latest Version)
Operation	Autonomous Standalone
Capabilities	Average, Peak hold, Valley hold, Advanced peak hold with threshold and hysteresis, Triggered signal output, Triggered peak hold function (adjustable via software)

GENERAL
Size	Sensing head: Ø29.5mm x 55 mm, M18x1 Electronics: 122 mm x 70 mm x 27 mm
Housing Material	Stainless Steel
Weight	Sensing head:200 g (incl. massive housing) Electronics: 420 g
Country of Origin	Germany

ENVIRONMENTAL & CERTIFICATIONS
Operating Temperature Range	Sensing head: -20 °C … 250 °C Electronics: 0 °C … 85 °C
Storage Temperature Range	Sensing head: -40 °C … 250 °C Electronics: -40 °C … 85 °C
Relative humidity	10 – 95%, non condensing
Protection Class	IP 65, NEMA 4 (except terminal connector )
EMC	2014/30/EU
Shock	IEC 60068-2-27 (25 G and 50 G)
Vibration	IEC 60068-2-6 (sinus shaped) IEC 60068-2-64 (broadband noise)
Standards	CE, UKCA, RoHS

POWER
Power Supply	8-30 V DC
Power Consumption	1.2 W


Part number	OPTCTILT02H	OPTCTILT10H
Additional Remarks	1) 90% energy 2) for more Information see datasheet

Areas of Application

Thanks to its stainless steel measuring head, capable of withstanding temperatures of up to 250 °C, the Optris CTi LThot infrared thermometer offers versatile application possibilities for measuring non-metallic surfaces in hot environments. It finds suitability in various industries including driers and ovens, furnaces, heat-treating facilities, plastics and textile processing, and semiconductor production. Additionally, upon request, the IR thermometers can be provided in an explosion-safe design with an ATEX certificate.

Software

The Optris CompactPlus Connect software is a comprehensive tool for temperature measurement and analysis in industrial and research environments utilizing Optris infrared pyrometers. It provides a user-friendly interface facilitating smooth communication with Optris pyrometers.Enhancing the capabilities of Optris fixed infrared pyrometers, the CompactPlus Connect software extends beyond basic temperature measurement, offering various monitoring, analysis, and control features. These include visualizing temperature trends with temperature-time diagrams and documentation. Notably, it enables advanced data analysis, data logging, automatic process controls, parameterization of the pyrometer via configuration settings, and programming of outputs and inputs. Additionally, it offers advanced signal-processing functionalities.Overall, the Optris CompactPlus Connect software offers a robust solution for thermal measurement applications, providing versatility, efficiency, and ease of use for professionals in diverse industries. CompactPlus Connect The Optris IR mobile allows users to set up and commission an Optris infrared pyrometer or infrared camera with an Android smartphone or tablet. This tool becomes handy for commissioning and aligning the infrared cameras field of view or adjusting the configuration. The app analyzes the connected infrared cameras live infrared image stream with auto hot and cold spot detection. For pyrometers, a temperature-time diagram or the video signal is displayed. This app works on most Android devices running 5.0+ with a USB port supporting USB-OTG (On The Go). Google Play

Downloads

Manual

MANUAL

PDF - 711.69 KB

ACCTECATK EtherCAT Interface Kit Manual

MANUAL

PDF - 1.99 MB

CTi Manual

MANUAL

PDF - 2.83 MB

CompactPlus Connect Manual

Download

DOWNLOAD

PDF - 416.56 KB

Optris CTi Communication Interface

Complete the form to download the file

DOWNLOAD

ZIP - 2.57 KB

IT010A90 GSD file for CT

Complete the form to download the file

Datasheet

DATASHEET

CTi LThot Datasheet (US)

STEP file

STEP FILE

ZIP - 56.99 KB

CT Sensor Head

STEP FILE

ZIP - 1.64 MB

CT Electronics Box

FAQs

Can I shorten the cable between the sensor head and the electronics box?

It is recommended not to change the sensing cable length, as the cable’s impedance is part of the sensor calibration. However, in all CTi LThot models, the sensing head cable can be shortened if absolutely necessary. Shortening the cable will cause an additional measuring error of about 0,1 K/m.

What distance-to-spot size ratio is correct for the application?

The measuring object’s size and the infrared thermometers optical resolution determine the maximum distance between the sensing head and the measuring object. To prevent measuring errors, the object should completely fill out the field of view of the optics. Consequently, the spot should always be at least the same size as the object or should be smaller than that.

Which changes have to be selected if an external close-focus lens is used?

The optional CF lens allows the measurement of small objects. If the CF lens is used, the transmission has to be set to 0.78. The assigned transmission (average value) is a characteristic value that may have a certain scattering. If required, the transmission has to be determined experimentally.

How do I exchange the sensor head?

From the factory side, the sensing head has already been connected to the electronics and the Head ID has been entered. Inside a certain model group, any exchange of sensing heads and electronics is possible. Every head has a specific eHead ID, which is printed on the head cable and engraved on the sensing head. For correct temperature measurement and sensor functionality, this calibration code must be stored in the electronic box.

Can you connect two pyrometers to the same computer?

Yes, this is possible. For using the software CompactPlusConnect or CompactConnect (depends on which type of pyrometers you are using) you have to create different instances of the software. You can connect two pyrometers via the USB ports. It is also possible to connect the two pyrometers with a RS485 interface. You can connect the first pyrometer via the provided RS485-USB adapter to the PC.

Scope of Supply