Use Of Menu Functions; Description Of Functions - Bühler technologies TC-Double Guía Rápida

TC-Double (+)
The front film on the display module has three LEDs:
Colour Marking
Red S2
Yellow S1
Green
OP
The LEDs OP and S2 indicate the device status similar to S2.
If the option "temperature signal" is built in, the unit has a
signal output via the analogue output to indicate the actual
cooler temperature.
The temperature signal can be read via the panel plug (S3) us-
ing the M12x1 connector. This plug is located next to the mois-
ture detector connectors at the top of the cooler.
The temperature (CH1) which continuously appears in the dis-
play corresponds to the temperature in block 1 (after-cooling).
The analogue temperature signal also corresponds to the
temperature in block 1.
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After switching on the cooler the block temperature will be
displayed (block 1). The display will flash until the block tem-
perature has reached the preset target value (± adjustable
alarm range). The status contact is in the Alarm position.
Once the target temperature range has been reached, the
temperature will continuously be displayed and the status
contact switches over.
If the display flashes during operation or an error message ap-
pears, please refer to bullet "Troubleshooting".
Please refer to the data sheet for performance data and max-
imum ratings.

5.1 Description of functions

The cooler is controlled by a microprocessor. With the factory
preset the control already incorporates the various character-
istics of the built-in heat exchangers.
The programmable display shows the block temperature in
the selected display unit (°C / °F) (factory preset °C). Applica-
tion-specific settings can easily be configured guided by the
menu, using the 5 buttons. For one, this applies to the target
outlet dew point, which can be set from 2 to 20 °C (factory pre-
set 5 °C).
And then the warning thresholds can be adjusted for low and
excess temperature. These are set relative to the outlet dew
point τ setting.
a
For the low temperature the range is τ
imum 1 °C cooling block temperature), for the excess temper-
ature the range is τ +1 to +7 K. The factory presets for both val-
a
ues are 3 K.
The flashing display and the status relays indicate the condi-
tions are below or above the configured warning range (e.g.
after switching on).
BX440021 ◦ 06/2017
Function
High/low temperature
Device error
Reserved
Normal operation
-1 to - 3 K (at a min-
a
The status output can e.g. be used to control the sample gas
pump to allow for the gas flow to only be switched on once
the permissible cooling range has been reached or shut off the
pump in the event of a moisture detector alarm.
The separated condensate can be drained via connected peri-
staltic pumps or add-on automatic condensate drains.
Fine mesh filters can also be used, which in turn can be in-
stalled in optional moisture detectors.
The glass dome allows the dirt level of the filter element to easily be determined.
The moisture detector is easy to remove. This may be required
if a condensate enters the cooler due to a malfunction and the
peristaltic pump or the automatic condensate drain is unable
to remove it.
The TC-Double has an additional cooling stage for pre-cooling
the gas (heat exchanger 2), the block temperature of which
varies by ambient temperature and load. The target value of
the pre-cooling stage corresponds to that of block 1.

5.2 Use of menu functions

Brief description of the operating principle:
The unit is operated using 5 keys. Their functions are:
But- Section
ton
Display • Switches from the measurement display
to the main menu
or
Menu • Selects the menu item displayed
OK
Enter • Applies an edited value or a selection
Display • temporarily switches to the alternative
measurement display (if option installed)
Menu • Back
Enter • Increase value or browse selection
• Note:
▪ Press button 1 x = changes para-
meter / value by one;
▪ Hold button = fast mode (numerical
values only)
▪ Display flashes: modified parameter/
value
▪ Steady display: original display/value
Display • temporarily switches to the alternative
measurement display (if option installed)
Menu • Next
Enter • Reduce value or browse selection
Menu • Move one level up
ESC
Enter • Return to menu
Changes will not be saved!
• Sets a menu to favourite.
F
(Note: The favourite menu will also be ac-
or
tivated with the menu locked!)
Func
Functions
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