AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
CARME
Draft saved at 00:00:00
Fields marked with
*
are required
Entry time:
Mon Apr 7 23:10:22 2025
Author
*
:
Subject
*
:
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
Encoding
:
HTML
ELCode
plain
Suppress Email notification
Attachment 1:
Drop attachments here...
Draft saved at 00:00:00
ELOG V3.1.4-unknown