Ametek 930 User Manual

5-4 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
Frequency Task
Monthly Check Analyzer Response Time
Note: Do this task in conjunction with the monthly task “Check the PMT
Signals” above.
Manually Zero the analyzer. After the Zero is complete, determine the
sample response time by switching the analyzer from Continuous
Backpurge/Zero Flow mode to Continuous Sample Flow mode.
Observe the RUN mode normal display and record the time it takes the
analyzer to display the rst reading after the switch. Typically, a good
response time is in the range of 30 seconds. A response time that is
slower than normal may suggest plugging problems in the analyzer’s
sample system.
Refer to “Manually Zeroing the Analyzer” and “Setting the Sample
Gas Flow Rate and Sample Response Time” in Chapter 3. See also
“Preventing, Detecting, and Locating a Plug in the Sample System” in
this chapter.
Monthly Pressure Gauge
Check the Aspirator Pressure gauge.
Aspirator air pressure should be set approximately 10 PSI above the
sample stream pressure. See “Setting the Sample Gas Flow Rate and
Sample Response Time” in Chapter 3.
Pressure Transducer Air pressure is set at a nominal 105 KPAG (15
PSIG).
CAUTION:
To avoid damaging the pressure transducer, do not set the
pressure higher than 105 KPAG (15 PSIG).
Monthly Temperature Zones
Check and record the temperatures of all temperature zones and ensure
they are all within 5 % of their Set Point values.
Every 6 Months Sheltered Systems
If the analyzer is installed in a custom shelter, check the air lters for the
shelter purge and air conditioning systems, and replace if necessary.
Depending on the environmental conditions of the site, more frequent
lter replacement may be necessary.
Every 6 Months Sample/Vent Lines
Inspect the Sample and Vent Lines for sags, sharp bends, or damage
to the outer skin. If necessary, take appropriate safety precautions and
replace the lines. Perform a leak check on all associated ttings after
replacing any lines.
9–12 Months Source Lamps
Replace the source lamps.
The lamps may require replacement sooner if analyzer alarms are set
(“w ALC” or “w PMT signal”). See also “Source Lamp Replacement”
and “Troubleshooting and Diagnostics” in this chapter.

Ametek 930 Specifications

General

Brand	Ametek
Model	930
Category	Measuring Instruments
Language	English