Mettler Toledo M300 ISM Especificações Página 65

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
Vista de página 64
Transmitter M300 65
© 12 / 11 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M300
Printed in Switzerland 52 121 389
8.5 Alarm/Clean
(PATH: Menu/Configure/Alarm/Clean)
Enter configuration mode as described in Section 8.1 ”Enter Configuration Mode”.
This Menu allows the configuration of Alarm and Clean functionality.
8.5.1 Alarm
To select ”Setup Alarm”, press the m or . key so that ”Alarm” is flashing.
Using the b and c buttons, navigate to ”Use Relay #”. Using the m or . keys, select a relay
to be used for the Alarm and press [ENTER].
One of the following events may be alarmed:
1. Power Failure
2. Software Failure
3. Rg Diagnostics – pH glass membrane resistance (pH sensors only; pH/pNa Rg diagnostics
detect both pH and pNa membrane glasses)
4. Rr Diagnostics – pH reference resistance (pH sensors only; except pH/pNa)
5. Cond cell open (cond sensors only)
6. Cond cell shorted (cond sensors only)
7. Channel A disconnected (ISM sensors only)
8. Channel B disconnected (only for ISM sensors and dual channel version)
If any of these criterias are set to Yes and the conditions for an alarm are given, the flashing
symbol a will be shown in the display, an alarm message will be recorded (see also chapter
12.1 ”Messages”; PATH: Info/Messages) and the selected relay will be activated. Furthermore an
alarm can be indicated by the current output if this has been parameterized (see chapter 8.3
”Analog Outputs”; PATH: Menu/Configure/Analog Outputs)
1. there is a power failure or power cycling
2. the software watchdog performs a reset
3. Rg is out of tolerance – for example, broken measuring electrode (pH only; pH/pNa Rg diag-
nostics detect both pH and pNa membrane glasses)
4. Rr is out of tolerance – for example, coated or depleted reference electrode (pH only)
5. If the conductivity sensor is on air (for example in an empty pipe)
6. If the conductivity sensor has a short cut
7. If no sensor is connected on channel A (ISM sensors only)
8. If no sensor is connected on channel B (only for ISM sensors and dual channel version)
For 1 and 2 the alarm indicator will be turned off when the alarm message is cleared. It will re-
appear if the power is constantly cycling or if the watchdog is repeatedly resetting the system.
OnlyforpHsensors
For 3 and 4 the alarm indicator will go off if the message is cleared and the sensor has been re-
placed or repaired so that the Rg and Rr values are within specification. If the Rg or Rr message
is cleared and Rg or Rr is still out of tolerance then the alarm will stay on and the message will
reappear. The Rg and Rr alarm can be turned off by going into this menu and setting Rg Diag-
nostics and/or Rr Diagnostics to No. The message can then be cleared and the alarm indicator
will be off even though Rg or Rr is out of tolerance.
Vista de página 64
1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 121 122

Comentários a estes Manuais

Sem comentários