Agilent Technologies 400/54 Premium Shielded NMR Magnet System - Page 78

76 400/54 Premium Shielded NMR Magnet System Product Overview
5 Agilent E5025 Cryogen Monitor
P1SEC?
Sets the duration (in seconds) so that the helium probe
heater is energized for performing a level reading (min. 3
secs, max. 20 secs). The unit assumes that both P1 and P2
probes are equivalent and changes the heater time for both
probes.
P1Cur ?
The heater current (in mA) for both the helium probes (min.
85mA, max. 125mA).
rEFiLL ?
The refill level (in mm) on the probe, that is, the 0%
position.
P1 LEn ?
The nominal active length (in mm) of both helium probes.
Note that this value does not include the heater length
P1 rES ?
The resistivity of the probe wire (in Ohms/m).
P1 on ?
Enables the P1 helium probe.
P1 oFF ?
Disables the P1 level probe. It is useful to be able to deselect
a probe if it is faulty and causes the unit to flash a warning
on the display permanently. When selected, the monitor
displays the P2 reading. If both probes are disabled, the unit
displays “oFF”.
P2 on ?
Enables the P2 helium probe.
P2 oFF ?
Disables the P2 level probe. It is useful to be able to deselect
a probe if it is faulty and causes the unit to flash a warning
on the display permanently. When selected, the monitor
displays the P1 reading. If both probes are disabled, the unit
displays “oFF”.