WIKA CF1H User Manual
Page 61
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Operating Instructions Temperature Indicating Controller CF1H
V 1.2
•
01/2007
- 61 -
3-phase
*
Electro-
magnetic
switch
Alarm
unit
Heater
Thermocouple
Electric
furnace
[Fig.
11.2-1]
• To prevent the unit from harmful effects of unexpected level noise, it is recommended that
a surge absorber be installed between the electromagnetic switch coils.
Single-phase
Alarm
unit
24V
SSR
CT
Heater
Thermocouple
Electric
furnace
[Fig.
11.2-2]
AC or DC is available to supply voltage 24 V, however, do not confuse the polarity
when DC is applied.
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