Binder C 170 E3 - Page 33

C (E3) 08/2015 page 33/93
Operating functions that can be set in operating mode HAND
Display
Setting range
Operating function
0.0 °C to 50.0 °C
Temperature set point
Must be at least 7 °C / 12.6°F above the ambient temperature in order to
ensure a stable temperature inside the C 170.
0.0 vol.-% to 20.0
vol.-%
CO
2
set point
Common value: 5.0 vol.-% (factory setting), or depending on the NaHCO
3
concentration of the culture medium (Figure 23 page 53).
0.0 °C to 60.0 °C
Safety controller set point when set point type is “Limit” (Lit)
Limit value, i.e., maximum permitted absolute temperature value. When
exceeded, the safety controller triggers an alarm. For technical reasons,
the limit value should exceed the temperature set point by at least 2 °C.
Typical value: 39.0 °C / 102.2°F.
Or
0.1 K to 10 K
Safety controller set point when set point type is “Offset” (OFS)
Offset value, i.e. maximum over temperature above the selected set point
When exceeded, the safety controller triggers an alarm. For technical
reasons, the offset value should be at least 2 °C (factory setting).
0 to 999
Max. 3-digit numeric password for locking/unlocking the operating func-
tion setting in operating mode LOCK (chap. 7.4)
To permit temporary unlocking: select any password
≠ 0.
To permit permanent unlocking: set password to “0”.
The operating function “At.S” in operating mode USER (chap. 7.3) specifies the safety control-
ler set point type “Limit” (Lit) or “Offset” (OFS).
• With set point type “Limit” (Lit), operating function “AL.S
” (safety controller set point as limit
value) is displayed in operating modes HAND and USER. You can set a limit value.
• With set point type “Offset” (OFS), operating function “Ot.S” (safety controlle
r set point as
offset value) is displayed in operating modes HAND and USER. You can set an offset val-
ue.
With set point type “Limit”, set the safety controller each time the set point for the temperature
is changed. Set the safety controller set point approx. 2 °C above the controller temperature
set point.
Factory setting: set point type “Offset” with safety controller set point 2 °C.