CT-211 High-Temperature Thermometer

The CT-211 is a terminal box-type temperature sensor designed for high temperatures. It features an alumina (Al₂O₃) ceramic protective sheath, ensuring stable measurement and long-term durability even in extreme high-temperature environments. It standardly supports R/S/K type thermocouples, with selectable accuracy of Class 1 or Class 2, and is available in lengths of 500 mm and 800 mm. In addition to standard specifications, the sensing element, length, and material can all be customized.

Description

The CT-211 is specifically designed for furnace, sintering, heat treatment, metallurgy, and other extremely high-temperature processes. It features a built-in high-temperature thermocouple with an alumina ceramic protective sheath, capable of withstanding operating conditions up to 1600°C (R/S type) or up to 1250°C (K type). The product uses a large T-type terminal box for easy wiring, maintenance, and on-site repair; its heat-resistant structure and excellent insulation make it suitable for harsh environments such as furnaces or high-temperature reactors. Customization is available to meet specific requirements for different pipe diameters, lengths, or special materials.

Specifications

Sensing Element

Thermocouples: Types K, T, J, R, S, and B
Platinum resistors: PT100, PT1000, PT500

Accuracy Class

Class A, Class B, 1/10 DIN, 1/5 DIN, 1/3 DIN (select according to application)

Wiring Method

Thermocouple: 2-wire
PT100: 3-wire

Temperature Range (depending on the sensing element)

Type K thermocouple: Approximately –50°C to +1200°C
Type T thermocouple: Approximately –250°C to +350°C
J-type thermocouple: approx. –40°C ~ +750°C
R/S/B type thermocouple: approx. +600°C ~ +1600°C
PT100: –200°C ~ +500°C (depending on package and wire material)

Probe Appearance and Dimensions

Standard rod-shaped probe diameters: Φ3.2, Φ4.8, Φ5, Φ6.3 mm, Φ9.5 mm (custom sizes available)
Probe length: can be specified as needed (e.g., 30mm, 50mm, 100mm and above)

Ceramic Tubes

Φ17
For other specifications or customized options, please contact us to discuss.

Installation

The large T-shaped connector makes it easy to connect and secure wires.

Selection of Probe Material

Material	Description
304SS	Stainless steel for general industrial use, with excellent corrosion resistance.
316SS	High corrosion-resistant stainless steel, suitable for chemical or humid environments.
310SS	High-temperature stainless steel with excellent heat resistance.
P4	High-purity ferritic alloy, resistant to high temperatures and corrosion.
INCONEL	Ultra-high temperature nickel-based alloy, resistant to oxidation and acidic environments.
Hastelloy-C	High corrosion resistant nickel-chromium alloy, resistant to strong acid environments.
Hastelloy-B	High acid resistance nickel-chromium-molybdenum alloy, suitable for extremely acidic environments.

Application Examples

Temperature monitoring inside the furnace, sintering furnace and high-temperature furnace body.
Key temperature measurement points in metallurgical, heat treatment and metal processing processes.
High-temperature reactors, sintering/firing processes and materials testing.
Scientific or industrial applications requiring long probes with ceramic insulation protection.