Switching On The Calibrator; Start-Up Procedure; Calibration (Calibration Mode); Setting A Set Temperature - WIKA CTD9100-ZERO Manual De Instrucciones

5. Commissioning, operation

5.2 Switching on the calibrator

1. Connect to the mains supply using the power cord
supplied.
Only connect the instrument to circuits where
the risk of a power outage has been minimised
EN
as far as possible, since during any power
outage cooling air will not be available.
2. Switch on the mains switch.
The main switch is located on the underside of
the instrument, in the centre, at the front. After
a short self-test, the controller starts to regulate
the temperature in the block to the last, set
value.
The controller will be initialised.
After approx. 5 s, the initialisation will be complete and the
calibration mode will automatically be displayed.
The 4-digit LED display of the controller will now show the
last set temperature set. The built-in heating or cooling
elements will temper the metal block automatically from room
temperature to the set temperature.
Once the selected set temperature has been reached,
through short switch impulses, the radiated heating energy
from the metal block is delivered, so that the temperature
within remains constant.
Fig. 5: Set temperature display

5.2.1 Start-up procedure

If the calibrator is not used for a long time, because of the
materials used (magnesium oxide), moisture can penetrate
the heating elements.
Following transport or storage of the calibrator in moist
environments, the heating elements must be taken to higher
temperatures slowly.
12

5.3 Calibration (calibration mode)

As soon as the calibrator is switched on, following the
initialisation, it defaults to calibration mode.
On the display, the selected set temperature is displayed.
The LED Heat and LED Cool signal the status of the output
for the heating control:
If the LED Heat is on, the temperature will increase.
■
If the LED Heat is not on, the heating is switched off.
■
If the LED Cool is on, the temperature will decrease.
■
If the LED Cool is not on, the cooling is switched off.
■
During the heating or cooling phase, a continuous light
indicates the supply of heating or cooling energy. A flashing
LED indicates that the selected set temperature has almost
been reached and therefore the heating or cooling energy is
only being supplied in short bursts.
To ensure good temperature stability, the cycle time of the
controller is set low and the control output is usually raised.

5.4 Setting a set temperature

In this operating state, a stored set temperature is temporarily
changed.
1. Press key P briefly.
⇒
2. By pressing the ▲ key, the set temperature is increased.
By pressing the ▼ key, the set temperature is decreased.
3. By pressing key P again, the new selected set point is
accepted.
WIKA operating instructions temperature dry well calibrator, model CTD9100-ZERO
LED Heat LED Cool
Fig. 6: Display with LED Heat and LED Cool
On the display, the currently active set temperature is
displayed.