Display; Upper Display; Lower Display; Leds - PerkinElmer PTP-1 User Manual

Display

The display is split into two parts – an Upper display and a Lower display. The numbers in
the Upper display are green, while the numbers in the Lower display are red.
The status of the PTP, that is RUN or STOP, determines the contents of each display. The
exact contents are discussed further in the appropriate sections.

Upper Display

During the programming procedure, in controller mode, the display will show the
o
temperature ( C) for the setpoint and/or alarms. In programmer mode, the display will show
the temperature values (
pattern.

Lower Display

In controller mode, the lower display shows the parameter code, that is the setpoint and
alarms. In programmer mode, the lower display shows the number of the stored pattern,
setpoint value and associated time values for the segments of the pattern, and the number
of cycles.

LEDs

There are 4 LEDs on the front panel of the PTP, which have the following functions:
LED
(as numbered
in Figure 8)
1 Heating is in progress
2 Cooling is in progress
3 When LED 3 (Alarm) is flashing it indicates that an alarm is
active. This means that the temperature is out of range, or
the sensor is interrupted or short-circuited.
4 When the LED is lit, PTP is in RUN status.
When the LED is flashing, PTP is in RUN status but is being
controlled remotely, for example, by a PC.
NOTE: When LED 4 is not lit, the instrument is in STOP status.
o
C) or the time values (hours, minutes) for the segments of the
Meaning when lit
Description . 33