Description

The CT-335 high-pressure flange type temperature sensor uses a 2″ 300lb RF flange as its standard interface, suitable for piping systems and equipment requiring high-pressure sealing and strength. Its sensing element supports K-type and J-type thermocouples and PT100 platinum resistance thermometers, with different elements corresponding to different temperature ranges and accuracy levels to meet the needs of testing from high to medium and low temperatures. The protective sleeve diameter is available in φ20 mm or φ6.3 mm, with standard tube lengths of 300 mm and 500 mm, made of SUS304 or SUS316 stainless steel, offering both corrosion resistance and pressure resistance. In addition to the standard configuration, the sensing element, tube length, and material can all be customized to adapt to various complex operating conditions.

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.

Flange Specifications

• For other sizes or custom options, please contact us to discuss the 1″ 150 LB RF flange.

Installation

• The small round-head terminal box features a fixed design for easy connection and maintenance.

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 of high-pressure steam pipelines or liquid delivery systems.
• High-pressure sealing installation environments in chemical reactors or pressure vessels.
• Applications such as energy equipment, boiler systems, or high-pressure heat exchangers.
• High-voltage operating conditions or locations requiring frequent maintenance and repairs but where maintaining a sealed safety is essential.

Further Reading

• Sensing accuracy and error calculation method

  Resistance thermometer accuracy table and calculation formula

• Thermocouple accuracy and power meter

  Thermocouple accuracy and electric current

• Product Classification by Appearance

  Terminal box type temperature sensing rod introduction

  Introduction to wire-type temperature sensing rods

• Temperature calibration laboratory information

  CPT Temperature Calibration Center

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