
Transmitter M400 83
© 02 / 2010 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400
Printed in Switzerland 52 121 378
8.6.3 SIP Cycle Limit
Navigate to the menu “SIP Cycle Limit” by using the and . keys and press [ENTER].
The SIP cycle limit counts the number of SIP cycles. If the limit (user defined) is reached, an
alarm can be indicated and set to a certain output relays. The following options are possible:
SIP Max 000
Alarm YES / NO R# choose relay
If the Max setting is on 000, the counter functionality is turned off. The alarm will be reset after
exchanging the sensor. For oxygen sensors, the counter can be reset (see chapter 8.6.5 “Reset
ISM counter/timer”).
SIP characteristics: SIP Cycles will be automatically recognized by the sensor. Since SIP cycles
will vary in intensity (duration and temperature) for each application the algorithm of the counter
recognizes an increase of the measurement temperature above a certain level (110 °C for SIP).
If the temperature does not decrease below (100 °C for SIP) within the next 5 minutes after the
first temperature was reached, the counter in question will be incremented by one and also
locked for the next two hours. In the case the SIP would last longer than two hours the counter
would be incremented by one once more.
Pressing the [ENTER] key will bring up the Save Changes dialog. Selecting No will
discard the entered values, selecting Yes will make the entered values the current ones.
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NOTE: In case of an optical oxygen sensor, the value for SIP Max will also be written to the sen-
sor. The transmitter M400 uploads the value SIP Max from an optical oxygen sensor after plug-
ging in.
8.6.4 Autoclaving Cycle Limit
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NOTE: The transmitter recognizes the connected ISM sensor and offers this menu only if an auto-
clavable sensor is connected.
Navigate to the menu “AutoClave Cycle Limit” by using the and . keys and press [ENTER].
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