Dear all,
Many thanks to all who responded (Peter Dormer, Thomas Smith, Shing (Simon) Sham,
Geoffrey Akien, George Sukenick, Bob Berno, David Vander Velde, Brian Cherry,
John Decatur, Hasan Celik, Mike Lumsden, David Jones, and Margaret Eastman),
nothing unfortunately that resolved the pulsecal or BCU questions but plenty on
the helium check valve question. Thanks for the information and pics that I
have collated in the accompanying document.
There seems to be no problem with using the new check valves and also leaving
them in place when doing a helium refill (but caution is advised and also
consultation with Bruker). Only questions are what parts to get for what you
want to hook up and the part numbers. Currently we are not collecting the
helium so we only needed to decide if we wanted to:
1. Join both exit ports up and then attach the check valve. You can buy the
whole manifold apparatus from Bruker (P/N Z54230: SET HE MANIFOLD D2XX which
includes check valve Z52395 but not the adaptor Z52523: ADAPTER KF25 HE MANIFOLD
D2XX, very unclear exactly what is included and what is not), quite expensive
though, or make the manifold attachments yourself and just buy the valve
(Geoffrey Akien has done this).
2. Keep the old check valve on one exit port and put a new check valve on the
other exit port.
3. Put a new check valve on each exit port.
I think we will probably go for the third option.
Kind regards and thanks to all again for your input,
Karel Klika
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Received on Mon Feb 26 2024 - 06:40:40 MST