WIKA SC15 Operating Instructions Manual
Operating Instructions
Betriebsanleitung
Combistat, mechanical Temperature Regulator
Model SC
Combistat, anzeigender Temperaturregler
Typ SC
GB
D
Combistat, Mechanical Temperature Regulator SC15
Operating Instructions Combistat,
GB
mechanical Temperature Regulator Model SC Page 3 - 10
Betriebsanleitung Combistat,
D
anzeigender Temperaturregler Typ SC Seite 11 - 18
11482690 09/2009 GB/D
2
WIKA Operating Instructions Combistat Model SC
Contents
Contents
1. Safety instructions 4
2. Application 4
3. Design and operating principle 4
4. Technical data 5
5. Installation, commissioning and operation 6
6. Troubleshooting 8
7. Indicator check 8
8. Indicator correction 9
9. Maintenance and servicing / Cleaning 10
10. Repairs 10
11. Disposal 10
GB
Information
This symbol provides you with information, notes and tips.
Warning!
This Symbol warns you against actions that can cause injury to
people or damage to the instrument.
11482690 09/2009 GB/D
WIKA Operating Instructions Combistat Model SC 3
1. Safety instructions / ... / 3. Design, operating principle
1. Safety instructions
The appropriate national safety regulations (e.g. VDE 0100)
GB
Serious injuries and/or damage can occur should the appropriate
regulations not be observed.
Only appropriately qualified personnel should carry out the connection
work.
Any connection work may only be carried out once the equipment has
been isolated.
must be observed when installing, commissioning and
operating these devices.
2. Application
Universally applicable safety temperature regulator for gaseous, liquid and
highly-viscous process media.
3. Design and operating principle
The fluid-filled, closed measuring system consists of a temperature sensor, a
measuring capillary and a bourdon tube. Heating the temperature sensor leads
to a volume change in the closed system and thus a change in the pressure.
This is transferred through a measuring capillary to the bourdon tube and,
through the angular motion of the pointer shaft, to the dial on the display.
When the switch point is passed, the switch disc (cam disc), fitted to the
pointer shaft, triggers the micro switch.
Apart from the standard version with 1 or 2 adjustable micro switches there are
further combinations such as:
1 or 2 non-adjustable micro switches
1 non-adjustable and 1 variable adjustable micro switch
Case steel with 3 or 4 fixed switches
The switch points of the non-adjustable micro switches are printed on the
product label.
WIKA Operating Instructions Combistat Model SC4
11482690 09/2009 GB/D
4. Technical Data
4. Technical Data
Ingress protection
Case IP 53, terminals IP 00 (EN 60 529 / IEC 529)
Scale range
100 °C ... 400 °C
Permissible temperatures
Case: +60 °C
Capillary:
plastic sheathed -40 °C ... +100 °C
copper braided -40 °C ... +350 °C
Scale limits
Max. 270 °
Measuring principle
Bourdon tube system
System filling
Xylol, silicon oil, syltherm or nitrogen
Capillary
Plastic sheathed or copper braided,
capillary of copper or stainless steel 1.4571 depending on scale range
p
GB
Capillary length
Max. 10 m
Capillary outlet
Lower back
Contact
Micro switches (fixed or adjustable)
Load data
5 A, 250 V AC
There is no overcurrent protection fitted to these instruments. In order to
prevent the switches being welded through overload, a suitable protection
device should be fitted by the user.
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WIKA Operating Instructions Combistat Model SC 5
4. Technical data / 5. Installation, commissioning, operation
Standard switch differential
< 2 % of the measuring range at the reference temperature of 23 °C at the case
and capillary
GB
Electrical connection
0.8 x 0.63 mm terminal block or AMP plug connection
Case
Plastic (ABS), black or steel
Type of mounting
Panel mounting with clamp
(NS 100: steel case with panel mounting flange)
Options
Panel mounting flange
Protection cap IP 51 or IP 54
Case steel with 3 or 4 fixed micro switches
5. Installation, commissioning and operation
When fitting and using the instruments, the following
fundamental requirements must be followed:
The display range of the safety temperature regulator should be chosen
so that the maximum temperature at the sensor does not exceed the
display range. Also, after the switchpoint has been exceeded, a
resultant reheating process has to be taken into account.
In operation the equipment should not be subjected to strong vibration
or impact loads.
Contamination and high ambient temperature fluctuations should be
avoided.
Any break in the capillary will destroy the instrument and result in it
switching off.
WIKA Operating Instructions Combistat Model SC6
11482690 09/2009 GB/D
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