Intertek 25-CAB80 Manual page 27

INTERTEK/WARNOCK HERSEY
SFBA EMISSIONS AND EFFICIENCY TESTING LABORATORY
OPERATING PROCEDURES
2. Prior to calibrating, make sure that the outlet pressure on each calibration
gas bottle reads 10 PSI. Adjust flow meters at each gas analyzer to
required flow.
The gas analyzer (CO
analyzer is spanned with a certified span gas mixture.
Calibrate analyzers as follows:
a. With calibration switch at "SPAN", adjust all span controls to values
specified on span gas label.
b. Switch to "ZERO" and adjust zero controls to provide 0.00 readout on
all analyzers.
c. Repeat a. and b. until no further adjustment is required.
d. Record these values on the appropriate data sheet.
e. Switch to "CAL." and record all analyzer values.
3. Response time synchronization check.
a. With switch at "SAMPLE" and no fire in unit, allow readings to stabilize
(O analyzer should read 20.93, CO and CO
2
b. Switch to "CAL" setting and start the stopwatch. Note the time
required for each unit to reach the calibration gas bottle value. If all
three analyzers reach this value within 5 seconds of each other,
synchronization is adequate. If not, contact the laboratory manager.
Synchronization is adjusted by either internal instrument setting or
adjustment of sample line length.
c. Use EPA Method 5H 6.7-6.9 procedures to check calibration of
instruments.
4. Sample clean-up train.
a. Load a new filter in 4-inch glass filter holder.
b. Load four Impingers as follows:
#1: 100 ml. distilled water
#2: 100 ml. distilled water
#3: Empty
#4: 200-300 grams Drierite.
c. Place Impingers in container and connect with greased "U TUBES".
(Grease carefully on bottom half of ball joint so that grease will not get
into tubes.)
d. Connect filter to impinger #1 and sample line to impinger #4.
e. Connect stack probe to filter.
f. Leak check system as follows:
G:\Hearth\EE\Misc\Forms\Procedures\E&E Lab Procedures 2015 NSPS Pellet.doc
, CO, O ) is zeroed on nitrogen. The O
2 2
pg. 3 of 8
, CO and CO
2 2
should read 0.00).
2