Mettler Toledo M400 Especificações Página 78

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Transmitter M400 78
© 02 / 2010 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400
Printed in Switzerland 52 121 378
Hold
Enter the Relay Hold Status of ”Last”, ”On” or ”Off”. This is the state the relay will go to during a
hold status.
State
Relay contacts are in normal state until the associated setpoint is exceeded, then the relay is ac-
tivated and the contact states change.
Select ”Inverted” to reverse the normal operating state of the relay (i.e. normally open contacts
are in a closed state, and normally closed contacts are in an open state, until the setpoint is ex-
ceeded). ”Inverted” relay operation is functional when power is applied to the M400 transmitter.
Relay No 2 always operates inverted. All other relays can be configured.
Pressing the [ENTER] key again will bring up the Save Changes dialog. Selecting No will dis-
card 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 Relay #”. Using the 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 (only for pH and dissolved carbon dioxide
sensors)
4. Rr diagnostics – pH reference resistance (only for pH sensors)
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. Shaft error (only for optical sensors)
9. Signal error (only for optical sensors)
10. Hardware error (only for optical sensors)
11. Cond Ind Defect (only for inductive conductivity sensors)
12. Dry Cond sensor (only for ISM cond sensors)
13. Cell deviation (only for ISM cond sensors)
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