CT-327 Corrosion-Resistant Thermometer

Corrosion-resistant design, providing a stable temperature measurement solution suitable for harsh industrial environments.

The CT-327 is a terminal box-type temperature sensor designed specifically for highly corrosive environments. Equipped with a bakelite terminal box and corrosion-resistant protective sleeve, it can be stably applied in harsh conditions such as chemical, acid and alkali processes, and marine facilities, ensuring long-term durability and accurate temperature monitoring.

Description

The CT-327 features a corrosion-resistant stainless steel protective sleeve (SUS304 or SUS316) and a bakelite terminal box, making it suitable for acid-, alkali-, or high-humidity environments. Sensing elements include K/J type thermocouples and PT100 RTDs (Class A or B accuracy), commonly used in corrosion-sensitive environments such as chemical process piping, aerospace applications, coating equipment, and offshore platforms.

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)

Installation

The terminal box is made of bakelite, which has insulation and corrosion resistance.

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 chemical process pipelines (such as acid and alkali tanks, reactors).
Pipe wall temperature measurement in marine or ship environments.
Localized areas of high corrosion in coating and etching equipment.
Chemical contact fields in semiconductor, metal processing and other manufacturing processes.
The need for monitoring to maintain stable accuracy even when operating in corrosive environments for extended periods.