CryoTiger

Description

The PT uses an IGC-APD CryoTiger refrigerator to cool the CCD. Our unit has:
• PT-14 gas (Praxair Technology, Inc), which cools to liquid nitrogen temperature with a capacity of about 4 W. Its composition, in approximate order by weight, is propane, ethane, methane, argon, nitrogen, and neon. This is not the same mix that SPICAM uses so no parts from that CryoTiger should be substituted here. Spares are kept at Johns Hopkins.
• 25-foot flex hose, which wants a 255 psi charge in the compressor, measured at room temperature. We've never been able to get it that high because an overpressure valve kicks in a little lower, but it works anyway. The pressure tolerance is +5/-25 psi.

IGC-APD Cryogenics is located at:

1833 Vultee St.
Allentown, PA  18103-4783
(800) 525-3072 (sales)
(800) 525-3071 (service; your best help is here)

Praxair Technology is at:

39 Old Ridgebury Road
Danbury, CT  06810-5113
(800) PRAXAIR
(800) 645-4633 EMERGENCIES ONLY

Spare parts

There is a complete copy of the CryoTiger system at APO. Contact Jon Brinkmann for more information.

Recharge Instructions

Notes

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