Calibration Equipment; Figure 71 - Portable Purge Calibrator; Figure 72 - 3-Liter Chamber - General Monitors TA102A Instruction Manual

Model TA102A

6.2.6 Calibration Equipment

The Model TA102A uses a Portable Purge Calibrator (Figure 71) or the 3 Liter Chamber
(Figure 71), to accomplish calibration. The calibration and calibration check procedures
and use of the Portable Purge Calibrator is explained in Sections 5.2 and 5.3.
Figure 71 – Portable Purge Calibrator
The procedure using the 3-Liter Chamber (Figure 72) is explained below:
The 3-Liter Chamber is used when the TA102A is calibrated with liquid or solvent
vapors.
Before the Model TA102A is calibrated with any solvent or volatile liquid, consult the
listing in Appendix B to determine the volume of solvent/liquid required to produce a
50% LEL concentration in the 3-Liter Chamber. However, if the user specified calibration
level is not 50% LEL, consult the factory for the correct volume. Let the factory know the
calibration level (25 to 90% LEL) and the solvent/liquid being used to calibrate the
sensor.
Figure 72 – 3-Liter Chamber
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