Ametek 933S User Manual

Maintenance and Troubleshooting | 6-65
Decimal Alarm
Bit Value Type Alarm Condition / Description and Suggested Corrective Action
6 64 Warning w: Sample gas pressure too low
The sample gas pressure is below 1 % of the full-scale range.
Note: This alarm is used only by analyzers equipped with the optional
pressure transducer.
This alarm can be factory-set as a Warning or a Fault, based on
customer requirements. A Warning indicates the data is suspect (the
analyzer requires service). For a description of this alarm if congured
as a Fault, refer to the “f: Sample gas pressure too low” alarm
description later in this section.
Corrective Action:
• Check the sample gas pressure gauge and ensure that it is at an appropriate
ow and pressure, as recommended on system drawings.
• From the Output Setup dialog box, conrm the sample gas Low Scale and
High Scale pressure settings are correct.
• Check for leaks in the sample system (see “Sample System Leak Check” in
Chapter 3).
• Check the solenoids (backpan).
If this doesn’t correct the alarm, take appropriate safety precautions, open the
Lower Enclosure, and:
• Check the pressure transducer.
• Inspect the Check Valves in the Column Block Assembly for signs of wear (see
“Column Block Maintenance” in this chapter).
• Replace the Customer I/O board. Contact AMETEK to verify operation
before removing this board.
7 128 Warning w: Low ow detected
A low sample gas ow has been detected. This alarm will be delayed by the time
(seconds) entered in the Flow Switch Alarm Time Delay eld on the Alarm
Setting and Stream Switch Parameters dialog box.
Note: This alarm is used only by analyzers equipped with the optional ow
switch.
This alarm can be factory-set as a Warning or a Fault from the Alarm
Type eld in the Alarm Setting and Stream Switch Parameters
dialog box, based on customer requirements. A Warning indicates the
data is suspect (the analyzer requires service). For a description of this
alarm if congured as a Fault, refer to the “f: Low ow detected” alarm
description later in this section.
Corrective Action:
• Check the Probe valves to ensure they are open.
• Check the sample system to ensure there is adequate ow and there are no
plugs.
• If your system uses an aspirator to move the sample gas, adjust the aspirator
air to ensure a proper ow rate, as indicated on analyzer drawings.
Also, check the aspirator air line for damage or bends.
• Check the ow switch for plugs and/or for an open circuit.
Take appropriate safety precautions, open the Upper Enclosure, and:
• Check the Micro-Interface board by simulating the low ow switch output.
Setup (tab)Alarm/
Stream Switch
Setup (tab)Output

Ametek 933S Specifications

General

Brand	Ametek
Model	933S
Category	Measuring Instruments
Language	English