AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
CARME
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Mon Aug 18 06:40:28 2025
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> > Water flow and dew point sensors have been installed on the outlet and inlet cooling water manifolds respectively. > > Outputs indicating good water flow and ambient temperature above the dew point are connected via an interlock box (constructed by Peter Black) > to the USB-controlled ac mains relay which provides remote control of ac mains power to the AIDA FEE64 PSUs. > > The interlock box (see attachment 1) has > > 1x 24V dc power input (ac mains transformer) > 4x sensor inputs (1x dew point, 1x flow and 2x unused, dummy cable inputs) > 4x outputs (1x connected to USB-controlled ac mains relay, 3x unused) > > When all sensor inputs are OK, 4x yellow LEDs (corresponding to each of the 4x sensor inputs) are illuminated and visible through the transparent > lid of the interlock box - see attachment 2 > The USB-controlled ac mains relay yellow 'water' LED is illuminated if interlock is OK - see attachment 3 > > > B+B Sensor Dew Point Controller - attachments 4 & 5 > red led (top right) indicates sensor above dew point > > Micronics U1000 Mk II Clamp On Ultrasonic Flow Meter - attachments 6-9 > > Setup as follows > Pipe ID: 44mm > Reading: Flow > Units: litres > Flow Units: l/min > Pipe Material: M/Steel > Set Separation: C 3 > > All other settings default > > Not possible to attach sensor assembly to electronics module for some reason but cabling is attached and unit appears to > work OK. Typical flow c. 75 l/min with signal strength c. 75% - see video attachment 10 > > Sunday 6 April > FEE64 power OFF > Valve OFF outflow > Flow rate reported by Micronics U1000 Mk II decreases fro c. 75 l/min to 0 l/min over a period of c. 10-15s > USB-controlled ac mains relay - yellow 'water' LED off > Valve ON outflow > Flow rate recovers c. 10-15s > > Monday 7 April > FEE64 power ON > Valve OFF outflow > Flow rate reported by Micronics U1000 Mk II decreases fro c. 75 l/min to 0 l/min over a period of c. 10-15s > AIDA PSUs OFF as flow -> 0 > Valve ON outflow > USB-controlled ac mains relay - yellow 'water' LED ON > AIDA PSUs remain OFF > Rly16 browser tab continues to display 'power ON' and OK status - attachment 11 > but unable switch ALL off > To recover - clsoe Rly16 browser tab, reboot nnrpi1 and restart MIDAS server > > > Valve ON outflow > >
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