Cole Parmer RS-200 Series, Инструкция по эксплуатации

Страница: 21 / 36

21
Page 25 of 41 M7886 issue 8.41
7.9.2. Warning
–
external probe is plugged in but inadvertently left out of the sample.
When an external probe is plugged in and the heaters are turned on your Omni Reaction
Station will expect to see a rise in temperature of no less than 6  C within the first 10 minutes.
Should the external probe be accidentally left out of the sample solution the following will be
displayed:
.
Figure 36: Warning
–
External Probe Left Out Of Sample
The unit will ‘beep’ rapidly for 10 seconds.
The heaters will be turned off.
If the unit was stirring a sample it will continue to do so.
The warning will remain on the LCD until the
>
key is pressed.
Rectify the fault.
The unit will return to the main display screen for use without the external probe unless the
connection is re-established. The heaters must then be turned back on manually by pressing
the key.
Note: If a dry block has no internal sensor fitted, the unit may trip into fault if a temperature is
set which is less than 6

C above the dry block starting temperature. To overcome this
situation always set a temperature 6  C above the dry block starting temperature. Alternatively
cool the dry block using the optional cooling plug accessory.
If the dry block is equipped with an internal sensor and the set temperature is less than 6

C
above the dry block staring temperature the unit will only go in error condition when the
internal sensor sees more than a 50

C increase above the set point with no temperature
increase seen on the external probe.
7.9.3. Warning
–
external probe has fallen out of the sample.
If during the heating cycle the external temperature probe falls out of the sample the following
condition will arise:
Figure 37: Warning - External Probe Drop Out
Should the external probe fall of the sample the unit will see a decrease in temperature. Once
the probe temperature has dropped more than 6  C in 60 seconds the heaters will be turned
off.
The unit will ‘beep’ rapidly for 10 seconds.
If the unit was stirring a sample it will continue to do so.