CT-304 Waterproof Thermometer

Waterproof structural design, sensor rod adapted to humid environments.

The CT-304 is a common waterproof terminal box temperature sensor, particularly suitable for industrial and process environments requiring moisture protection. Its dedicated waterproof design effectively isolates external moisture, ensuring accurate temperature sensing and durability, making it a reliable choice for industrial temperature measurement.

Description

The CT-304 features a waterproof terminal box design, providing waterproof and sealed performance, making it suitable for applications in humid environments, outdoor locations, or frequent cleaning scenarios. Sensing elements can be thermocouples or RTDs, and probe materials, protective sheaths, and dimensions can be customized to meet specific requirements, offering both durability and flexible specifications.

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)

Terminal Box

Material: Bakelite

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

Internal temperature monitoring of industrial machinery and equipment.
Automatic control system and internal measurement of control box.
Pipeline or metal surface temperature sensing.
Temperature monitoring of test fixtures or modules.
Process temperature detection in food, chemical, and automated production lines.