Aryabhatta Research Institute Of Observational Sciences Tender

Compact closed-cycle cryogenic cooling system using suitable gas to cool a CCD cold-head down to temperature -150 C (minus 150 degree centigrade) under vacuum with peak cooling capacity of 10 watt in laboratory environment. Items to include (all pre-charged): 1 unit of compressor unit working at 240 V AC, 2 Nos. of 50-feet super-flex type gas lines with self-sealing coupling (Size 4/4F), 1 unit of cold head/cold-end with required additional coupling (if any). Heat rejection not to exceed 1KW (air cooled). Note: This system needs to be compatible/exchangeable with the cold-head end of Cryotiger/polycold/PCC/Brooks make presently used on the existing system in 3.6-m DOT. Unit should be operable at 80% RH. The items should be sturdy/durable and made of suitable non-rusting metal. Size not to exceed 25-inches and weight not to exceed 50 kg. It should conform to environmental regulatory norms of India. Also TUV/EN/IEC or equivalent certified.