If you happen to have a manual or electronic schematics for Matheson Model
8274 four-channel mass flow controller power supply, I would appreciate it
if you could let me know the exact pin-out for the 15-pin female D-sub
connectors on the back of this power supply. I contacted Matheson with this
question but they do not keep manuals on their website, and for some reason
are reluctant to let me know what this pin-out is. I was able to figure out
what some of the pins are by explicit measurements:
Pin 2: valve open/close
Pins 5, 8, 12, and 13: connected to ground (could be power common, control
signal common, or flow feedback common; I am not sure which one is which)
Pin 6: flow readout (0-5 V)
Pin 9: -15 VDC
Pin 11: +15 VDC
Pin 14: control voltage (0-5 V)
Pins 1,3,4,7,10,15: likely unused
However, I am not sure about the common (ground)pins. Any help would be
appreciated. Thank you.
Sergey Nizkorodov.
To join or leave the molecular-dynamics-news email list, go to:
http://www.jiscmail.ac.uk/lists/molecular-dynamics-news.html
|