SAF And EAF Furnace Pressure Measurement Instruments 220V / 380V
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Product Details
EAF Furnace Pressure Measurement
,Arc Furnace Pressure Measurement Instruments
,SAF Furnace Pressure Measurement Instruments
Product Description
Pressure Measurement Instruments
SAF and EAF require monitoring of key pressure parameters including furnace chamber pressure, gas pressure, cooling water pressure, and hydraulic system pressure to ensure stable furnace pressure, equipment safety, and proper process operation.
2.1 Pressure Transmitter
| Type | Measuring Principle | Measuring Range | Accuracy | Output Signal | Applications |
|---|---|---|---|---|---|
| Capacitive Pressure Transmitter | Capacitance change | -0.1~40MPa | 0.075%~0.1%FS | 4~20mA+HART | General pressure, differential pressure |
| Piezoresistive Pressure Transmitter | Piezoresistive effect | -0.1~60MPa | 0.1%~0.25%FS | 4~20mA | Hydraulic system, oil pressure monitoring |
| Diaphragm-Sealed Pressure Transmitter | Isolated diaphragm | -0.1~10MPa | 0.1%~0.2%FS | 4~20mA | Clogging-prone, high-viscosity media |
| Low Differential Pressure Transmitter | Capacitive/Silicon resonant | 0~1kPa | 0.1%FS | 4~20mA | Furnace micro-differential pressure control (±15Pa) |
2.2 Pressure Switch
| Type | Setting Range | Contact Rating | Protection Class | Features | Applications |
|---|---|---|---|---|---|
| Mechanical Pressure Switch | -0.1~40MPa | 10A/250VAC | IP65 | Simple structure, low cost | Pressure high/low alarm, interlock protection |
| Electronic Pressure Switch | -0.1~60MPa | 0.5A/24VDC | IP67 | High accuracy, adjustable setpoint | Automation control system pressure monitoring |
2.3 Pressure Instrument Selection Reference
| Pressure Measurement Scenario | Recommended Instrument | Selection Reason |
|---|---|---|
| Furnace chamber pressure (low DP) | Low DP transmitter (≤1kPa) | High accuracy, good stability, absolute error <±15Pa |
| Gas pressure | Diaphragm-sealed pressure transmitter | Clog-proof, corrosion-resistant |
| Cooling water pressure | Capacitive pressure transmitter | General purpose, cost-effective |
| Hydraulic system pressure | Piezoresistive pressure transmitter | Wide range, impact-resistant |
| Alarm/interlock protection | Pressure switch | Fast response, high reliability |
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