GE Healthcare · MRSignaExcite
Predicted ride through time and characteristics of the 0.7T HFO magnet, defined.
Symptom
What is the ride through time of an HFO Magnet between cold head failure and magnet quench. The 0.7T magnet is designed with zero boil off capability. The ride through is defined as the time between failure and magnet quench. See MR Cause concept for the predicted ride through characteristic of the 0.7T magnet. The 0.7T magnet is designed with zero boil off capability. The ride through is defined as the time between failure and magnet quench.
Applies to
- Models
- Signa, Excite
- Product
- Magnet HFO. Software Version Concept should NOT be selected for Magnet Products Serial # (Txxx) Field strength: 0.7 T He Vessel Pressure >0.9 psig but <6.25 psig Shield Temp for Cryo-cooler coldhead < 40 K Temp for Shield-cooler Coldhead < 35 K Cryocooler 2nd stage Temp > 3.8K but < 4.5K Recondenser Temp > 4.2K but < 4.6K Delta Temp (Coldhead - Recondensor) < 0 but < 0.3K Min. LHe Fill Level 75% of total vessel Min. LHe Ramp Level 100% Helium Volume 340 Liters Burst Disk 2253802-2 Baffle Assy 2226764
- Area
- MR
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