Mettler Toledo M400/2(X)H Especificaciones Pagina 58

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Transmitter M400/2(X)H, M400G/2XH 58
© 03 / 2014 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400/2(X)H, M400G/2XH
Printed in Switzerland 30 031 683
Hold
Enter the OC Hold Status of ”Last”, ”On” or ”Off”. This is the state the OC will go to during a hold
status.
State
OC contacts are in normal state until the associated setpoint is exceeded, then the OC is activat-
ed and the contact states change.
Select ”Inverted” to reverse the normal operating state of the OC (i.e. normally high voltage state
is in a low voltage state until the setpoint is exceeded). ”Inverted” OC operation is functional vice
versa. All OCs can be configured.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will
discard the entered values and return to the measurement display screen, selecting Yes will save
changes made.
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 or . key so that ”Alarm” is flashing.
Using the and c buttons, navigate to ”Use OC #”. Using the or . keys, select a OC 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 (only for pH,; pH/pNa Rg diagnostics
detect both pH and pNa membrane glasses)
4. Rr diagnostics – pH reference resistance (only for pH sensors; except pH/pNa)
5. Cond cell open (only for analogue cond 2-e / 4-e sensors)
6. Cond cell shorted (only for analogue cond 2-e / 4-e sensors)
7. Channel B disconnected (only for ISM sensors)
8. Dry Cond sensor (only for ISM cond sensors)
9. Cell deviation (only for ISM cond sensors)
10. Electrolyte low (only for ISM amperometric oxygen sensors)
If any of these criteria are set to Yes and the conditions for an alarm are given, the flashing sym-
bol a will be shown in the display, an alarm message will be recorded (see also chapter Mes-
sages; PATH: Info/Messages) and the selected OC will be activated. Furthermore an alarm can
be indicated by the current output if this has been parameterized (see chapter 8.3 “Analog out-
puts”; PATH: Menu/Configure/Analog Outputs)
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