CT-330 High-Temperature Thermometer
Ceramic-insulated, high-temperature-resistant precision temperature sensor.


The CT-330 employs an alumina (Al₂O₃) ceramic sleeve design, enabling it to maintain high stability and long-term reliability in extreme high-temperature environments such as furnaces, heat treatment, and heavy industry. Combined with a large round-head terminal box and a standard 1/2″ PT mounting method, it ensures secure installation and reliable signal connection, making it an ideal choice for high-temperature process monitoring.
Description
The CT-330's ceramic sleeve is characterized by its extremely high melting point and excellent thermal shock resistance. Even in harsh environments up to 1600 °C, it resists material damage caused by oxidation and thermal fatigue, ensuring long-term stability and durability. Internally, it uses high-precision R, S, and K type thermocouples, making it suitable for extremely high-temperature environments such as furnace temperature measurement, metallurgy, and glass manufacturing processes, making it a professional choice for high-temperature monitoring.
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.
Threaded Threads
- We support 1/4″ PT and 1/2″ PT thread specifications.
For other specifications or customized options, please contact us for discussion.
Installation
- Featuring a large round-head terminal box design, it provides robust connections and an easy-to-maintain interface.
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 detection of furnaces, ceramic kilns or high-temperature sintering equipment.
- Metal heat treatment, annealing furnaces and metallurgical process monitoring.
- Measurement of key temperature points in sintering furnaces and glass melting furnaces.
- Protective temperature detection in scientific high-temperature testing and materials analysis instruments.
Further Reading
- Sensing accuracy and error calculation method
Resistance thermometer accuracy table and calculation formula
- Thermocouple accuracy and power meter
- Product Classification by Appearance
- Temperature calibration laboratory information
Contact Information
For quotes, product selection advice, or technical assistance, please contact us through the following methods:
- Tel:07-3531378
- LINE@:@oneway3281
- Email:sales@oneway.com.tw


Tech Docs
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