ABB SCK User Manual

166 Operating instruction SCK Gas Sampling System OI/SCK-EN Rev. E
Evaluating trend displays
Irregularities of cooling-water pressure, cooling-water flow rate and cooling-
water temperature may indicate various errors. Common reasons for an in-
crease or drop in measured values may be, for example, a clogged filter, in-
crustations on the gas sampling probe, inadequate cooling of the heat ex-
changer or inadequate delivery rate of the cooling-water pump.
Displaying trend displays requires an access level 2 password.
Perform the following steps to evaluate trend displays:
Step
Procedure
1
Open the Trends submenu.
Path: Diagnosis ► Trends
2
Select one of the available parameters:
 "Sample Gas Pressure"
 "Cooling Water Pressure"
 "Cooling Water Flow Rate"
 "Cooling Water Flow Temp."

"Cooling Water Return Temp."
3
A typical trend screen is displayed:
The measured value is blue, alarm thresholds are also high-
lighted with a special color:
 Pre-alarm (maintenance required): yellow
 Main alarm (error): red
The reading rule indicates the measured value at the specific
time. A zoom function allows you to zoom in on details. For
further details refer to section Description of control system
on page 35.
Meaning
Requirements
Instructions

ABB SCK Specifications

General

Brand	ABB
Model	SCK
Category	Industrial Equipment
Language	English