20
3.4
Over Temperature Protection Circuit.
NOTE:
The controller is shipped with the Over
Temperature Protection Circuit
DISABLED
. To
activate this circuit for either or both channels,
follow Procedure 3 below.
Both channels of the Gemini are equipped with over temperature protection circuits. This circuit turns off
heating and sounds an audible alarm if the process temperature for Channel 1 and/or Channel 2 exceeds the
set point by 5 degrees. The high temperature limit (i.e. the limit that must be exceeded to trigger this
circuit) is factory set to 5 degrees for both channels, but can be changed or enabled or disabled as outlined in
the procedures below. The over temperature protection circuit for Channels 1 & 2 are independent of each
other. A temperature limit entered into the temperature meter controlling Channel 1 has no affect on
Channel 2 and visa versa.
Procedure 1.
To Change the Number of Degrees that the Reaction Temperature Must
Exceed the Set Point to Trigger the Over Temperature Alarm, Perform this Procedure.
1.
Press and hold in both the
and
keys on the front of the temperature meter for the Channel you want to change until the word
“
tunE
” appears in the display, then release both keys.
2.
Press the
key until “
SEt.2
” is showing in the display.
First hold in the ‘*’ key, while holding in the ‘*’ key press the
or
keys until the desired temperature limit is showing in the display,
then let go of all the keys.
3.
Press and hold in both the
and
keys until the temperature is showing again.
Procedure 2.
To Permanently Disable the Over Temperature Circuit, Perform this Procedure.
1.
Press and hold in both the
and
keys on the front of the temperature meter for the Channel you want to change until the word
“
tunE
” appears in the display, then release both keys.
2.
Press the
key until “
LEVL
” is showing in the display.
3.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
2
” is showing in the display, then let go of all the keys.
4.
Press the
key until “
SP2.A
” is showing in the display.
5.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
nonE
” is showing in the display, then let go of all the keys.
6.
Press the
key until “
LEVL
” is showing in the display.
7.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
3
” is showing in the display, then let go of all the keys.
8.
Press the
key until “
rEU.d
” is showing in the display.
9.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
1r.2d
” is showing in the display, then let go of all the keys.
10.
Press and hold in both the
and
keys until the temperature is showing again. When you do this, the alarm will sound.
11.
Increase the set point by any amount by first holding in the ‘*’ key, then while holding in the ‘*’ key press the
key.
Procedure 3.
To Enable the Over Temperature Protection Circuit, Perform this Procedure.
1.
Press and hold in both the
and
keys on the front of the temperature meter for the Channel you want to change until the word
“
tunE
” appears in the display, then release both keys.
2.
Press the
key until “
LEVL
” is showing in the display.
3.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
2
” is showing in the display, then let go of all the keys.
4.
Press the
key until “
SP2.A
” is showing in the display.
5.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
dU.hi
” is showing in the display, then let go of all the keys.
6.
Press the
key until “
LEVL
” is showing in the display.
7.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
3
” is showing in the display, then let go of all the keys.
8.
Press the
key until “
rEU.d
” is showing in the display.
9.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
1r.2r
” is showing in the display, then let go of all the keys.
10.
Press the
key until “
LEVL
” is showing in the display.
11.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
key until “
1
” is showing in the display, then let go of all the keys.
12.
Press the
key until “
SEt.2
” is showing in the display.
13.
Hold in the ‘*’ key, while holding in the ‘*’ key press the
or
key until “
5.0
” is showing in the display, then let go of all the keys.
14.
Press and hold in both the
and
keys until the temperature is showing again.
Содержание Gemini-230
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