IP65 Temperature Measurement Instruments Arc Furnace Temperature Measurement Device
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IP65 Temperature Measurement Instruments
,IP65 Furnace Temperature Measurement Device
,Arc Furnace Temperature Measurement Device
Product Description
Temperature Measurement Instruments Used for Arc Furnace
Temperature is one of the most critical parameters in metallurgical furnace control. SAF and EAF require temperature measurement at multiple points including furnace chamber temperature, flue gas temperature, cooling water temperature, and molten steel/hot metal temperature.
1. Thermocouple
| Type | Measuring Range | Features | Applications |
|---|---|---|---|
| Type K | -200~1300℃ | Good linearity, low cost, moderate oxidation resistance | Furnace chamber temperature, flue gas temperature |
| Type S | 0~1600℃ | High accuracy, good stability, high cost | High-temperature melt measurement, long service life |
| Type B | 0~1800℃ | Excellent high-temperature stability, no compensation wire needed | High-temperature furnace zone, corundum tube protection |
| Tungsten-Rhenium | 0~2000℃+ | Extremely high melting point (3300℃), 3x better oxidation resistance than Pt-Rh | Ultra-high temperature melt (molten steel, hot metal) |
2. RTD / Resistance Temperature Detector
| Model | Measuring Range | Features | Applications |
|---|---|---|---|
| Pt100 | -200~600℃ | High accuracy, good stability, excellent linearity | Cooling water temperature, flue gas temperature (medium-low temp), transformer oil temperature |
| Pt1000 | -50~500℃ | Higher sensitivity, fast response | Hydraulic station oil temperature, bearing temperature monitoring |
3. Infrared Thermometer / Thermal Imager
| Type | Measuring Range | Accuracy | Features | Applications |
|---|---|---|---|---|
| Handheld IR Thermometer | -30~1000℃ | ±1% or ±1℃ | Portable, fast spot measurement | Routine inspection, equipment surface temperature |
| Online Thermal Imager | 0~1500℃ | ±2% or ±2℃ | Fully sealed, dust/water/EMI resistant | Metallurgical furnace lining erosion monitoring, furnace temperature field distribution |
| Intrinsically Safe Mining Thermal Imager | -20~700℃ | ±2% or ±2℃ | Explosion-proof certified, suitable for hazardous areas | Gas zone, explosion-proof equipment monitoring |
| FalconTM EAF Measurement System | 1500~1850℃ (Type C) | ±10℃ | Automated unmanned operation, fastest combined O2/temp measurement |
4. Temperature Transmitter
| Type | Input Signal | Output Signal | Features | Applications |
|---|---|---|---|---|
| Wired Temperature Transmitter | Thermocouple/RTD/mV | 4~20mA | High accuracy, fast response | Conventional wired monitoring systems |
| Wireless Temperature Transmitter | RTD/T/C/mV/ohms | WirelessHART® | No cable required, reliability >99%, dual-chamber housing |
5. Temperature Instrument Selection Reference
| Temperature Measurement Scenario | Recommended Instrument | Selection Reason |
|---|---|---|
| Furnace chamber temperature (<600℃) | Pt100 assembled RTD | High accuracy, good stability |
| Furnace chamber temperature (600~1300℃) | Type K thermocouple | Good linearity, cost-effective |
| Furnace chamber temperature (>1300℃) | Type S/B thermocouple | High temperature resistance, good stability |
| Molten steel/hot metal temp (1200~1800℃) | Tungsten-Rhenium thermocouple / Falcon system | EMI resistant, high temp resistant, automated measurement option |
| Cooling water/oil temperature | Pt100 RTD / Bimetal thermometer | Matching measurement range, low cost |
| Furnace body surface/lining temp field | Online IR thermal imager | Non-contact, full-field temp measurement, lining erosion diagnosis |
| Vibrating/humid environments | Wireless temperature transmitter | No cables, maintenance-free, high reliability |
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