Ascon Tecnologic - e33B - OPERATING INSTRUCTIONS - PAG. 4
When the keyboard is locked, if any of the key is pressed,
the display showss
Ln
to indicate that the lock is active.
To unlock the keyboard it is enough to contemporaneously
press
/
+
/ keys and keep them pushed for 5 s, after
which the label
LF
appears on the display and all the key
functions will be available again.
2.7
Variables display
The display normally shows the variable set with parameter
idS
, but it is possible to display all the measurement and
operating variables by simultaneously pressing the
/
and
/
turbo
keys for 5 s.
The display will alternately show the code that identifies the
first displayable variable and its value.
So with the
/
keys keys you can view all the variables:
r1
Probe
Pr1
temperature measurement;
Pr2
Probe
Pr3
temperature measurement;
Pr3
Probe
Pr3
temperature measurement;
Lt
Minimum stored temperature readed by
Pr1
probe;
Ht
Mmaximum stored temperature readed by
Pr1
probe.
Peak values
Lt
and
Ht
are not saved when power failure
occours; a peak can be reset by pressing the
/ button
for 3 s while viewing that peak. After 3 s, the display shows
“
---
” for an instant to indicate that the displayed peak has
been erased and assumes the temperature measured at that
moment as the new peak. To reset the other peak repeat the
procedure while the system is displaying its value.
To exit the variable display mode, press no keys for about
10 s or press the
/ key.
-5.3
Pr2
Previous
Variable
Normal mode
Instrument variable
Next
Variable
2 s
5 s
3. USAGE WARNINGS
3.1
Admitted use
D
D
The instrument has been projected and manufactured
as a measuring and control device to be used accord-
ing to EN60730-1 at altitudes operation below 2000 m.
Using the instrument for applications not expressly permitted
by the above mentioned rule must adopt all the necessary
protective measures.
The instrument
MUST NOT BE USED
in dangerous environ-
ments (flammable or explosive) without adequate protections.
The instrument used with NTC 103AT11 probe (identifiable
by the printed code “103AT-11” visible on the sensor part)
is compliant with standard EN 13485 (“Thermometers for
measuring the air and product temperature for the transport,
storage and distribution of chilled, frozen, deep-frozen/quick-
frozen food and ice cream”) with the following classification:
[EN13485 air, S, A, 2, -50°C +90°C]
Remember that the end user must periodically check and veri-
fy the thermometers in compliance with standard EN 13486.
The installer must ensure that the EMC rules are respected,
also after the instrument installation, if necessary using
proper filters.
4. INSTALLATION WARNINGS
4.1
Mechanical mounting
The instrument, in case 78 x 35 mm, is designed for flush-
in panel mounting. Make a 71 x 29 mm hole and insert the
instrument, fixing it with the provided special brackets.
In order to obtain the declared front protection degree, mount
the gasket and use the screw type bracket (both optional).
Avoid placing the instrument in environments with very high
humidity levels or dirt that may create condensation or intro-
duction of conductive substances into the instrument
Ensure adequate ventilation to the instrument and avoid
installation in containers that house devices which may
overheat or which may cause the instrument to function at a
higher temperature than the one permitted and declared.
Connect the instrument as far away as possible from sources
of electromagnetic disturbances such as motors, power re-
lays, relays, solenoid valves, etc..
4.2
Dimensions
[mm]
4.2.1
Mechanical dimensions
e33B
P
U
trb
35
28
12.2
14.5
8
6
64
78
4.2.2
Panel cut-out
29
+0.6
71
+0.6
mm
RECOMMENDED
PANEL CUTOUT
min.
12 mm
min. 15 mm
4.2.3
Mounting brackets and gasket
P
anel + Gask
et max.
12 mm (#1)
max.
29 mm (#2)
“Butterfly” type
brackets (#1)
Screw type
bracket (#2)
34
43
86
