Calibration Frequency; Level 1 Calibrations Versus Level 2 Checks; Table 10-2: Activity Matrix For Quality Assurance Checks - Teledyne T300 Operation Manual

EPA Calibration Protocol

10.1.4. CALIBRATION FREQUENCY

Table 10-2: Activity Matrix for Quality Assurance Checks

Characteristic
Mean temperature between
22
Shelter temperature
daily fluctuations not greater
than ±2
No moisture, foreign material,
Sample introduction
leaks, obstructions; sample line
system
connected to manifold
Adequate ink & paper
Legible ink traces
Recorder
Correct chart speed and range
Correct time
TEST measurements at
Analyzer operational
nominal values
settings
2. T300 in Sample Mode
Zero and span within tolerance
Analyzer operational limits as described in
check
Subsection 9.1.3 of Sec. 2.0.9
(Q.A. Handbook Vol II
Assess precision as described
Precision check in Sec. 2.0.8 and Subsection
3.4.3 (Ibid.)
.

10.1.5. LEVEL 1 CALIBRATIONS VERSUS LEVEL 2 CHECKS

234
To ensure accurate measurements of the CO concentrations, calibrate the analyzer at the
time of installation, and recalibrate it:
•
No later than three months after the most recent calibration or performance audit
which indicate the analyzer's calibration to be acceptable.
•
When there is an interruption of more than a few days in analyzer operation.
•
When any repairs have taken place which might affect its calibration.
•
After a physical relocation of the analyzer.
•
When any other indication (including excessive zero or span drift) of possible
significant inaccuracy of the analyzer exists.
Following any of the activities listed above, the zero and span should be checked to
determine if a calibration is necessary.
Acceptance limits
o o o o
C and 28 C (72 and 82 F),
o
C
4
)
Essential to quality assurance are scheduled checks for verifying the operational status
of the monitoring system. The operator should visit the site at least once each week. It
is recommended Level 1 zero and span check conducted on the analyzer every two
weeks. Level 2 zero and span checks should be conducted at a frequency desired by the
user. Definitions of these terms are given in Table 10-3.
To provide for documentation and accountability of activities, a checklist should be
compiled and then filled out by the field operator as each activity is completed.
Teledyne API – Model T300/T300M CO Analyzer
Frequency and method of
measurement
Check thermograph chart
weekly for variations greater
o o
than ±2 C (4 F)
Weekly visual inspection
Weekly visual inspection
Weekly visual inspection
Level 1 zero/span every 2
weeks; Level 2 between Level
1 checks at frequency desired
analyzer by user
Every 2 weeks, Subsection
3.4.3 (Ibid.)
Action if requirements are not met
Mark strip chart for the affected time
period
Repair or adjust temperature control
Clean, repair, or replace as needed
Replenish ink and paper supply
Adjust time to agree with clock; note on
chart
Adjust or repair as needed
Find source of error and repair
After corrective action, re-calibrate
analyzer
Calc, report precision, Sec. 2.0.8 (Ibid.)
06864B DCN6314