SELENA
Multifunctional LED Clock
USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013
www.ledclocks.com
44
Temperature Probe Specifications:
TEMPERATURE PROBE Installation
Make sure that all power is disconnected.
1.
Locate the External Probe screw terminals on the back panel of the enclosure.
2.
Attach one end of the Probe’s extension cable (2-conductor) to the sensor terminals and the other end to the
temperature probe. The extension cable may be up to several hundred feet (meters) long.
NOTE: The Probe extension cable should be of low gauge to prevent the heat/cold accumulation by the large metal
mass of the wire, which may cause unwanted changes of the probe temperature.
NOTE:
When the “internal probe” is installed in the display housing, care should be taken to avoid unwanted transfer of the
clock’s or other equipment heat/cold to the probe body, in order to prevent incorrect readings.
Temperature Display activation
To assure that the EXTERNAL Temperature is displayed
ALL the time
, enable the function
Fn 1
and
disable
all other
display functions (Fn 0 and Fn 2 to Fn 7).
To select the INTERNAL probe, enable Fn 0 instead of Fn 1.
If the INTERNAL probe is to be selected as the control probe, enable Fn 27 .
1.
Invoke the Function Programming mode by pressing the
FUN
key after the remote programming mode has been
activated ( by pressing the
MUTE
key 5 times within 3 seconds or by removing the supply power for 2 seconds and
Optional Internal and/or
External Probe ( or both probes ) Terminals.
( install 50-100 Kohm resistor if Probe not
connected )
Optional Internal
Probe Housing
( Guard )
Terminal block
on the back panel
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Use any type
2-conductor cable to
extend the probe wiring
up to 500 ft ( 150m )
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Use any type
2-conductor cable to
extend the probe wiring
up to 500 ft ( 150m )
Model:
NA7050KB3950BRS
Res. @ 25C:
50 Kohm
Oper. range:
-40F ( -40C ) to +257F ( +125C )
Accuracy:
+/- 1%
Dimensions:
1” lg x 0.25” dia
( 25mm lg x 6.3mm dia )
Housing:
Brass
Wiring:
24AWG, Teflon jacket
Model:
NA7100KB4100BLK
Res. @ 25C:
100 Kohm
Oper. range:
-40F ( -40C ) to +302F ( +150C )
Accuracy:
+/- 1%
Dimensions:
1” lg x 0.2” dia
( 25mm lg x 5mm dia )
Housing:
Aluminium, black coated
Wiring:
24AWG, Teflon jacket
