High-temperature magnetostrictive level gauges are designed for continuous liquid level measurement in boilers, chemical reactors, and high-temperature storage tanks. Their technical parameters determine accuracy, safety, and service life in severe conditions.

Key parameters include measuring range, typically 300 to 6000 mm, and accuracy of +/-0.5 mm or +/-1 mm. Resolution can reach 0.1 mm, with repeatability within +/-0.1 mm. The process temperature range is commonly -40 C to 450 C; ambient temperature is -40 C to 85 C. Pressure rating may reach 10 MPa, depending on flange and probe design. Electrical connections often use M20 x 1.5 or 1/2 NPT, and the probe diameter may be 10 to 16 mm. Liquid density should typically be above 0.5 g/cm3, while viscosity must remain within the float's working limit.

Output options include 4-20 mA, HART, and RS485. Power supply is usually 24 VDC. Process connections can be flange or thread, with wetted parts made of 316L stainless steel, titanium, PTFE, or ceramic. The magnetic float must match liquid density and viscosity. Protection class is IP65 or IP67, and explosion-proof models comply with Ex d IIC T6. Response time is usually below 1 s.

For high-temperature service, probe materials, heat insulation, and electronic component temperature limits must be carefully selected. Regular calibration and float inspection help maintain reliable performance. These parameters ensure stable level control and safe operation in demanding industrial environments.