Cryogen level metering card for Mercury instruments
• Plug and go card for Oxford Instruments Mercury Instrumentation
• Supports duel cryogen level metering of Nitrogen and Helium
• Can be used with MercuryiTC and MercuryiPS master
• Connecting cables (E2-822 or E2-823) NOT included Each card supports a Helium Level input and a Nitrogen Level input
• Helium Level specifications
◦Excitation current settings: 20 mA to 280 mA in 20 mA steps
◦Excitation current accuracy: ±5%
◦Excitation voltage: 40 V maximum
◦Probe resistance: 0 to 300 ohms
◦Probe resistance accuracy: ±0.2%
◦Probe resistance stability: ±0.1%
◦A/D Resolution: 24-bit
◦Reading rate: 1 sample every 10s or 1 sample every 30 minutes.
◦Isolation: All sensors independently isolated
• Nitrogen Level input
◦Probe source voltage: 12 VDC
◦Probe source oscillator frequency range: 5 kHz to 90 kHz
◦Probe sensing resolution (level): 0.1%
◦Probe sensing accuracy (level): 0.5%