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Table 6: Estimated annual costs to maintain the BMI PILS. Replacement frequency of 0.5
means once every 2 years.
Item
Organic Denuder Carbon Paper Strips
HEPA filter
PEEK Tubing
Fuse
Steam injector Assembly
Wick (pack of 5)
Peristaltic pump tubing
Quartz impactor disk Oring
10 PILS Errors
One common error in the PILS is a steam tip temperature that drifts below 98C. The tip
temperature should be kept between 98 and 100C. Do not operate above 100C or you will
begin to volatilize your sample. Adjust the steam heater controller temperature setpoint
by 5C when the tip temperature drops below 98. Wait 10 minutes after each steam heater
temperature setpoint adjustment. Continue adjusting the steam heater setpoint until
the desired tip temperature is reached.
Another common error is a tip temperature reading near room temperature when the
steam heater is operating at its setpoint. This usually indicates that there is no liquid
flow to the steam heater and that either the supply bottle is empty or there is a problem
with the peristaltic pump line supplying the steam heater with liquid.
83-00009-01A
PILS Maintenance Costs
Cost
per Item
$258.00
$100.00
$60.00
$3.00
$1,250.00
$60.00
$273.00
$1.00
PILS 4001-115V and 4001-230V
10
PILS Errors
Replacement
Cost per
Frequency (/yr)
Year
1
$258.00
0.5
$50.00
0.3
$20.00
1
$3.00
0.5
$625.00
2
$120.00
1
$273.00
1
$1.00
Page 72 of 74
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