1
Main switch
ON: Voltage is on
OFF: Voltage is off
Main switch set to “OFF”:
•
Sample conditioning voltage: “OFF”
•
Sampling probe voltage: “OFF”
°
The purge air valve is “open when no current is
applied”: The sampling tube is flushed with instrument
air
•
Sample gas line heating: “OFF”
•
Analyzer voltage: “OFF”
Main switch set to “ON”:
•
All voltages come on.
2
“Stand-by” switch
OFF: Regular operation
ON: Stand-by
“Stand-by” switched to ON:
•
The maintenance signal on the analyzer becomes “active”
and the
yellow
LED lights
•
The measured values continue to “live”
•
A zero point validation is performed
•
The sample gas pump and the (optional) bypass pump go
off
•
The heaters remain switched on
•
The sampling tube is flushed with instrument air
“Stand-by” switched to OFF:
•
Sample gas pump and the (option) bypass pump are
switched on
•
The system goes into measuring operation: Only the
green
LED lights on the analyzer
3
Sample gas inlet from sam‐
ple conditioning(s)
4
Solenoid valve KK1, inlet
“R”
Connection: D/N 4/6
Sample gas inlet
For 1 measuring point: From sample conditioning
For 2 ... 4 measuring points: From measuring point switchover
in distribution unit
Solenoid valve KK1, inlet
“P”
Connection: D/N 4/6
Test gas inlet
During test gas adjustment with gas feed on the distribution
unit, the test gas is passed directly to the analyzer.
Solenoid valve KK1, outlet
“A”
Connection: D/N 4/6
Gas outlet to analyzer
5
Sample gas pump
For extraction of the respective active measuring point
6
Bypass pump
For advance extraction of the sample gas for 2 ... 4 measur‐
ing points
7
Flow indicator with adjust‐
ment wheel
Setpoint flow rate: Approx. 60 l/h.
The flow is displayed as measured value on the analyzer.
8
Sample gas fine filter
Serves to filter the sample gas for all measuring points before
feeding to the analyzer.
The analyzer signals the flow is too low when the filter clogs
up.
9
Water trap
The water trap protects the analyzer against damp sample
gas.
The analyzer signals the flow is too low when the filter clogs
up.
ß
Sample gas outlet to ana‐
lyzer
2
INSTALLATION
28
T E C H N I C A L I N F O R M A T I O N | MARSIC200
8017324/15A2/V6-0/2019-10 | SICK
Subject to change without notice