CT-212 High-Temperature Thermometer

The CT-212 features an alumina (Al₂O₃) ceramic protective sheath design, specifically crafted for high-temperature environments. It supports R/S/K type thermocouples with selectable Class 1 or Class 2 accuracy. Its probes offer various lengths and connection methods, and custom specifications are available. It is a reliable temperature monitoring device for metallurgy, heat treatment, furnaces, and high-temperature processes.

Description

The CT-212 combines high-temperature durability with precise temperature measurement. It utilizes a high-purity ceramic sheath as its outer protective layer, possessing excellent high-temperature resistance and insulation properties, maintaining structural stability even after prolonged exposure to extreme temperatures. It standardly supports R/S/K type thermocouples, all in 2-wire configurations, and offers selectable Class 1 or Class 2 accuracy. The probe diameter is φ6.3 mm, with common lengths L1 being 280/500 mm and L2 being 500/1100 mm. In addition to these standard configurations, we also provide customized services for larger diameters, different lengths, or other data parameters.

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

Core temperature monitoring in furnaces, heat treatment furnaces, and sintering equipment.
Metalworking processes, such as high-temperature steps like annealing, sintering, and quenching.
Monitoring of pipelines in high-temperature chemical furnaces, reaction furnaces, or oxidation furnaces.
Applications such as materials testing and scientific instruments that require long-term stable high-temperature measurements.