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U175 cooling water cycle 
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LabWatch 146

is a Web LIOB-580 modul from Loytec



LabWatch-146
Room: U175
/ Lüftungszentrale / Tel. 061 207 3797/3665/3824

Adress:     10.34.108.146
Name:       http://phys-alarm-06.physik.p.unibas.ch
LWEB-146: lweb802

Warning message:
Email to Roland Steiner, Laurent Marot, Rejaul SK,On-call duty (Pikettdienst)
Alarm:
Email to Roland Steiner, Laurent Marot, Rejaul SK, On-call duty (Pikettdienst)
SMS  to Laurent Marot, Rejaul SK,HW+Stv, On-call duty (Pikettdienst)

This module is monitoring the pressures of the cooling water cycle in the lab U175. 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.
Absender: LabWatch-146 / Raum U175
Subject :  RL-Druck zu tief / U175 Apaco-Station 

RL= <ist_wert>
Water pressure in room U175 of the return line is lower than <soll_wert> bar
Water should be refilled soon.
{timestamp}
https://labwatch.physik.unibas.ch/labwatch/146
Alarm Clear Subject : RL-Druck Cleared / U175 Apaco-Station 
Water pressure in room  U175 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.
Absender: LabWatch-146 / Raum U175
Subject :  VL-Druck zu tief / U175 Apaco-Station 

Water pressure in room U175 of the flow line (VL) drops below 4.5 bar
Possible cause: pump failure.
{timestamp}
https://labwatch.physik.unibas.ch/labwatch/146
Alarm Clear Subject : VL-Druck Cleared / U175 Apaco-Station 
Water pressure in room U175 of the flow line (VL) exceeded 4.5 bar
and is in the normal range again.
{timestamp}

If the RL pressure keeps dropping below 0.9 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.
Absender: LabWatch-146 / Raum U175
Subject :  Alarm / U175 Apaco-Station 

Water pressure of  return line in room U175 is lower than <soll_wert> bar
Below 0.6 bar, the cooling water unit will be shut down.
{timestamp}
https://labwatch.physik.unibas.ch/labwatch/146

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
Absender: LabWatch-146 / Raum U175
Subject :  Alarm / U175 Apaco-Station 

The pressure difference in room U175 between flow line and return line is lower than <soll_wert>  bar.
<{timestamp}
https://labwatch.physik.unibas.ch/labwatch/146
Alarm Clear Subject : Alarm Cleared / U175 Apaco-Station 
The pressure difference in room U175 between flow line and return line exceeds <soll_wert> bar
and is in the normal range again.
{timestamp}


Absender: LabWatch-146 / Raum U175
Subject :  Alarm / U175 Apaco-Station 

The pressure difference in room U175 between flow line and return line exceeds  <soll_wert> bar
{timestamp}
https://labwatch.physik.unibas.ch/labwatch/146
Alarm Clear Subject : Alarm Cleared / U175 Apaco-Station 
The pressure difference in room U175 between flow line and return line is below <soll_wert> bar
and is in the normal range again.
{timestamp}


Absender: LabWatch-146 / Raum U175
Subject :  Alarm Quitt / U175 Apaco Station

The acknowledgment key was pressed on location!

   Normalrange
  • RL-pressure 1.20 bar
  • VL-pressure 5.12 bar


   Threshold values for warning message:
  • return line pressure RL  < 1.1 bar
  • flow line pressure VL    < 5.0 bar
    Threshold values for alarm message:
  • return line pressure RL   < 0.8 bar
  • pressure difference       < 0.7 bar
  • pressure difference       > 4.5 bar
  • Trigger delay time         = 10 sec
  • ReAlarm time                = 60 min
LWEB Browser Visualisierung
Here you can read the actual pressure values and set new threshold values using  LWEB-146

LWEB803 Visualisierungs-Software