PerkinElmer PTP-1, Руководство пользователя

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40 . Peltier Temperature Programmer User’s Guide
Modes of Operation
There are two modes of operation – Local control mode and Remote control mode. In Local
control mode, control of the PTP is via the front panel of the instrument. In Remote control
mode, the instrument is controlled using software on a PC connected to the instrument.
Local Control Mode
When the instrument is in Local control mode it can either be in STOP status (stand-by), or
RUN status. It will not necessarily be in STOP status when the unit is switched on. In both
STOP and RUN status, the Upper display shows the temperature acquired. The Lower display
is dependent on the current status.
NOTE: When using the instrument as a controller, it will heat or cool at the maximum rate
until the setpoint is reached. This means that the setpoint will be reached quickly, but
it will only become stable after one to two minutes. To avoid overshooting the
temperature, insert the sample in the cell holder after the setpoint has been reached.
Alternatively, use the instrument as a programmer as described in the next section.
Remote Control Mode
In Remote control mode, the Upper display shows the temperature acquired. The Lower
display shows the setpoint. LED 4 flashes to show that the instrument is being controlled
remotely. The instrument is in RUN status.