CYY Single-Use Fast Thermocouple — Disposable Thermocouple for Molten Steel and Cast Iron

The CYY rapid thermocouple is designed to measure the temperature of molten steel, pig iron, molten copper, molten aluminum, and other molten metals in metallurgy, casting, and industrial manufacturing. It offers multiple options for sensor type, length, probe construction, and usage count to meet the specific temperature measurement needs of each facility. This product page focuses on the single-use variant—also known as disposable or expendable thermocouples—which is the preferred choice for plants prioritizing simple operation, probe replacement after each measurement, and material control based on usage count.

Product Positioning: This page is for customers who own a fixed-configuration liquid metal temperature meter or high-temperature pyrometer and need to purchase disposable consumables. Probes are ordered by specific device model and connector type; both single-use and multi-use options are model-specific, not universal. CYY's recommended core product for new measurement investments is the custom multi-immersion fast-response thermocouple probe—see the corresponding product page.

Fast Thermocouples are thermoelectric sensors designed to measure molten metal temperatures directly on-site. The probe is inserted into the liquid metal following appropriate procedures, generating a thermoelectric signal that the temperature meter (configured for the specific probe type) processes and displays as temperature. For single-use configurations, the used probe should be discarded after measurement and replaced with a new one, unless the specific model instructions indicate otherwise. While KW and KD are designed for single use, KS-602 and KB-602 can typically withstand 1-2 measurements. However, many customers replace the probe after just one use to ensure stable signals, so these models are also categorized as single-use thermocouples.

The disposable rapid thermocouple consists of a sensing probe with the thermocouple wires sealed inside a heat-resistant paper tube, protected externally by a basic slag and splash shield. The single-use design ensures each measurement employs a fresh probe, maintaining signal stability and minimizing errors from wear or contamination on reused probes. Manufactured per industry standard YB/T163 (disposable rapid thermocouples for measuring liquid metal temperatures), this product integrates into existing melting temperature guns and works with your current equipment. When ordering, please specify your device model and connector type to ensure the correct probe code is assigned.

Customers can purchase single-use disposable thermocouple pairs as consumables to replace their existing temperature meters or high-temperature guns. Since the measuring device comes with a fixed factory configuration, the probe must match the specific model. Please provide your meter/gun model, connector type, target metal, and desired length so CYY can quote the correct product code. For a complete measurement system, customers may consider CYY's molten temperature meter series; in this case, we recommend pairing it with our reusable fast-response thermocouple probes (our flagship product) for enhanced durability and higher measurement counts.

Materials and Temperature Measurement Applications: In steelmaking and steel casting, disposable thermocouples are used to monitor liquid steel temperature during melting or prior to pouring. CYY's disposable models primarily include KW (tungsten-rhenium WRe) and KD types, along with KS-602 (Type S, PtRh10-Pt) and KB-602 (Type B, PtRh30-PtRh6), covering the required temperature ranges for both liquid steel and molten iron. In foundries handling cast iron, these products measure molten iron temperature to support process control and metal pouring according to production procedures. For copper and aluminum casting, select the appropriate sensor material, temperature limits, and probe configuration based on the specific metal properties and measurement equipment.

Model and Length: Disposable models primarily include KW and KD, along with some KS-602 and KB-602. Reusable insertion models are measured in (KS-T4, KB-T4, HR, OR), and splash-proof types are detailed on the reusable thermocouple product page. Beyond these models, CYY can discuss other product codes or provide custom configurations tailored to your application needs. Reference lengths include 300 mm, 500 mm, 600 mm, 900 mm, 1.000 mm (1 m), and 1.200 mm. Other lengths may be considered based on product construction and order requirements. Customers may specify length at the time of ordering. If no specific requirement is provided, please share details about the furnace, measurement location, metal type, and equipment being used so CYY can recommend a suitable configuration.

Product Information: Product Name: CYY Disposable Fast Thermocouple. English Names: Fast Thermocouple, Disposable Thermocouple, Expendable Thermocouple. Related Terms: Expendable Thermocouple Tip, Consumption Type Thermocouple, Immersion Thermocouple, Molten Metal Thermocouple, Thermocouple Lance, Quick Temperature Probe. Applications: Measures temperature of molten steel, cast iron, copper, aluminum, and other suitable molten metal applications. Usage Type: Single-use per product configuration. Note: Material, temperature limits, accuracy, and usage count must be verified for each specific model.

Contact CYY: CYY provides rapid thermocouples and molten metal temperature measurement devices for customers in the metallurgy, casting, and industrial manufacturing sectors. Customers can purchase probe heads separately, request custom lengths based on application needs, or consult with us about complete CYY molten temperature measurement systems if a full solution is required.