42/23-81 EN Rev. 4
System Manual SCK Gas Sampling System
35
Compressed-air tank and pneumatic system
The compressed-air system serves to retract the probe out of the rotary kiln in the
event of malfunctions, e.g. power supply failure. The compressed air is also used
to clean the probe for certain types of probe.
The compressed air must meet the following minimum requirements:
Dew point
+3 °C
Pressure
6 bar (6000 hPa) positive pressure
Consumption
approx. 3 m
3
/h
One probe travel (2 x 20 s) requires approx. 1 m
3
.
Other requirements are:
The compressed air must be free of dirt and oil/water droplets.
At ambient temperatures below 0 °C make sure that the compressed-air supply
cannot freeze.
The sampling system can be fitted with a 250-l compressed-air tank. The com-
pressed-air tank serves to back up probe movement if the on-site compressed-air
supply fails.
This tank is not required if the on-site compressed-air supply is of stable perfor-
mance.
Meaning
Requirements
Optional
compressed-air tank
Summary of Contents for SCK
Page 2: ......
Page 16: ......
Page 36: ......
Page 54: ......
Page 110: ......
Page 222: ......
Page 232: ......
Page 235: ...42 23 81 EN Rev 4 System Manual SCK Gas Sampling System 235 ...
Page 236: ...236 System Manual SCK Gas Sampling System 42 23 81 EN Rev 4 Electrical connection plan ...
Page 237: ...42 23 81 EN Rev 4 System Manual SCK Gas Sampling System 237 ...
Page 238: ...238 System Manual SCK Gas Sampling System 42 23 81 EN Rev 4 Transformer connection plan ...
Page 242: ......
Page 243: ......