Measuring molten steel temperature requires specialized equipment
The molten steel temperature is about 100°C higher than that of cast iron, enough to remove equipment designed only for cast iron.
Liquid steel is approximately 150-200°C hotter than molten iron, has a slag layer on its surface, and allows only a very short measurement time before pouring. These three conditions mean that equipment designed for molten iron cannot be used simply by changing the probe.
Specialized equipment here doesn't necessarily mean a dedicated machine; it means the right configuration: a body with an appropriate measurement range, high-temperature thermocouples, and a design that allows sufficient insertion depth.
Key Control Points
Measurement range
Confirm that the operating ranges of both the device and the thermocouple cover the actual molten steel temperature range.
Skim the slag
The probe must be long and durable enough to penetrate the slag layer without breaking.
Embed time
Quick insert: hold for 3-5 seconds, read the number once it stabilizes, then remove.
Follow the bucket
Each bucket is sampled individually; the batch average cannot be used to determine pouring.
Real-world experience
- Keep a backup pair ready, as the probe may fail on its first dip.
- Dry tools and buckets before measuring to prevent metal splatter.
- Check weekly drift by comparing to a new pair.
Compatible device
CYY-W660 Wireless Large-Screen Steel Liquid Temperature Gauge
Wireless molten steel temperature measurement with a large 5-inch display for easy remote reading. CE certified, English interface panel.
Reference price: 500-600 USD
CYY-W600 Large-Screen Molten Steel Thermometer
Accurately measures molten steel temperature with a large 5-inch display for easy remote reading. CE certified with English interface.
Reference price: 400-500 USD
Stainless steel temperature probe for meter
Durable stainless steel probe, replacement accessory for handheld meter.
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Frequently Asked Questions
Can a cast iron tester measure steel?
Only if the instrument's measurement range and thermocouple are compatible. Verify specifications before using on steel production lines.
How often should the sensor be replaced?
Depending on the number of inserts and conditions. For steel, single-use probes are typically used for only one measurement.
Related topics
- Liquid steel temperature range and measurement methods
- Large-screen monitor lines for melting furnaces
Reference content from Changyouyi's technical article: original post on Sohu.
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