The SuperDryer System

The SuperDryer has been designed to minimse ice-blocking of the Oxford Cryostream system as much as possible. The result is extended operation (up to 12 months) without ice blocking of the system.

The SuperDryer is composed of a box ( 130 mm x 176 mm x 435 mm) with an in-line dryer and a very sensitive hygrometer with two levels of alarm. The system is completed with a long flexible stainless steel tube to the Cryostream coldhead. The system alarms can report to the console operator and/or used by any software to call an operator (e.g. by email) and once the in-line dryer is saturated, it can be bypassed and exchanged without any stopping the cryostream.

Indicators on the Front Panel

GREEN is the normal status after 48 hours. It indicates good quality of the nitrogen (less than 0.5 ppm of water). This LED will disappear first if the in-line dryer starts to become saturated. (db9: 1-2 OFF, 3-4 ON).

YELLOW this is the Power On LED. This LED is on alone during the first installation of the SuperDryer and indicates the normal drying processes of the probe. After a long time of operation in the Green Mode, however, this indicates the beginning of SATURATION in the in-line dryer. It is the WARNING state, (db9: 1-2 ON, 3-4 ON). Think of changing the dryer as soon as the RED led appears a few days later.

RED alarm at the first installation and during the next first 12 to 24 hours is normal, as the internal probe must be dried. If it persists after 24 hours then check the in-line dryer and look for a leak in the SUC part of circuit. (on the rear panel ALARM db9 connector: 1-2 ON, 3-4 OFF). If the red LED is on after continuous operation, then the in-line dryer needs to be replaced or dried out.

In case of problems and absence of assistance, the SuperDryer can always be removed from the circuit and the system run without it in place as a short term (days) solution.

In case of a flow stop (ie. shutdown) of the cryostream, the SuperDryer will indicate SATURATED in less than 30 minutes. It will take some hours (depending on how long the system was stopped for) to go back to indicating DRY. The gas however will be dry after just a few minutes, but the probe has a very long response time

NB: db9 1-2 OFF and 2-3 OFF indicate a NON INSTALLED device