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O207 cooling water cycle
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LabWatch 168

is a Web LIOB-580 modul from Loytec



LabWatch-168
Room: O207  /  REM Mikroscope Gemini

Adress:     10.34.108.168
Name:       http://phys-alarm-28.physik.p.unibas.ch
LWEB-168: lweb802

Warning message:
Email to Lukas Gubser, David Indolese, Miguel Carballido, Matthijs Hermans, On-call duty (Pikettdienst)
Alarm:
Email to Lukas Gubser, David Indolese, Miguel Carballido, Matthijs Hermans, On-call duty (Pikettdienst)
SMS  to Lukas Gubser, David Indolese, Miguel Carballido, HW+Stv, On-call duty (Pikettdienst)

This module is monitoring the pressures of the cooling water cycle in the lab O207. It measures the pressure in the flow line (german: “Vorlauf”, VL) and the return line (german: “Rücklauf”, RL) and calculates the difference.

If the return line pressure falls below 0.6 bar, the Apaco station will shut down. To avoid this situation, a warning message is sent to techalarm-phys@unibas.ch by email if the RL is lower than 1.1 bar. From this email account, the email is forwarded to the responsible staff.
Sender: LabWatch-168 / Room O207
Subject :  RL pressure too low / O207 Apaco-Station  

RL= <ist_wert>
Water pressure in room O207 of the return line is lower than <soll_wert> bar
Water should be refilled soon.
{timestamp}
More information: https://labwatch.physik.unibas.ch/labwatch/168
Alarm Clear Subject : RL-pressure Cleared / O207 Apaco-Station 
Water pressure in room  O207 of the return line exceeded  bar and is in the normal range again.
<timestamp>

If the flow line pressure (VL) drops below 4.5 bar, the pump could have failed. A warning message is sent to techalarm-phys@unibas.ch by email and forwarded to the responsible staff.
Sender: LabWatch-168/ Room O207
Subject :  FL-pressure too low / O207 Apaco-Station  

Water pressure in room O207 of the flow line drops below 4.5 bar
Possible cause: pump failure.
{timestamp}
https://labwatch.physik.unibas.ch/labwatch/168
Alarm Clear Subject : FL-pressure Cleared / O207 Apaco-Station  
Water pressure in room O207 of the flow line exceeded 4.5 bar and is in the normal range again.

If the RL pressure keeps dropping below 0.8 bar, both an acoustic and an optical alarm will be triggered. The alarm can be silenced for an interval of 60 minutes. The same action will take effect if the pressure difference goes below or above its limits. An alarm message is sent to techalarm-phys@unibas.ch by email and forwarded to the responsible staff.
Sender: LabWatch-168 / Room O207
Subject :  Alarm / O207 Apaco-Station 

Alarm / O207 Apaco-Station
{timestamp}
Water pressure of  return line in room O207 is lower than <soll_wert> bar
Below 0.6 bar, the cooling water unit will be shut down.
https://labwatch.physik.unibas.ch/labwatch/168

If the pressure difference is below or above its limits, a warning message is sent to techalarm-phys@unibas.ch by email and forwarded to the responsible staff
Sender: LabWatch-168 / Room O207
Subject :  Alarm / O207 Apaco-Station 

Alarm / O207 Apaco-Station
{timestamp}
The pressure difference in room O207 between flow line and return line is lower than <soll_wert>  bar.

https://labwatch.physik.unibas.ch/labwatch/168
Alarm Clear Subject : Alarm Cleared / O207 Apaco-Station 
Alarm / O207 Apaco-Station
{timestamp}
The pressure difference in room O207 between flow line and return line exceeds <soll_wert> bar
and is in the normal range again.


Sender: LabWatch-168 / Room O207
Subject :  Alarm / O207 Apaco-Station 

Alarm / O207 Apaco-Station
{timestamp}
The pressure difference in room O207 between flow line and return line exceeds  <soll_wert> bar

https://labwatch.physik.unibas.ch/labwatch/168
Alarm Clear Subject : Alarm Cleared / O207 Apaco-Station 
Alarm / O207 Apaco-Station
{timestamp}
The pressure difference in room O207 between flow line and return line is below <soll_wert> bar
and is in the normal range again.




   Threshold values for warning message:
  • return line pressure RL  < 1.1 bar
  • flow line pressure FL     < 3.5 bar
    Threshold values for alarm message:
  • return line pressure RL   < 0.7 bar
  • pressure difference       < 1.5 bar
  • pressure difference       > 4.0 bar
  • Trigger delay time         = 10 sec
  • ReAlarm time                = 60 min
Picture of LWEB browser visualization
Here you can read the actual pressure values and set new threshold values using  LWEB-163

LWEB803 Visualisierungs-Software