Instruction manual

4.0 PIPING SM425 INSTRUCTION MANUAL
Table 4-1 System 1 required piping parts
4.1.2 Connection to the Calibration Gas Inlet
Mount a stop valve (of a quality specified by Teledyne Monitor Labs) on a nipple (found on the open
market) as illustrated in Figure 4-2 (A stop valve may have been mounted on the detector prior to
shipping the detector.). Mount a joint (also found on the open market) at the stop valve tip.
Connect the piping (6(O.D) ~4(I.D.) mm tube) from the standard gas unit to the calibration gas inlet of the
detector when performing calibrations.
Note 1: Mount the stop valve close to the detector.
Figure 4-2 Connection to the calibration gas inlet
4.1.3 Connection to the Reference Gas Inlet
Normally, no piping is required for the reference gas inlet when the equipment uses natural convection for
reference gas (models SM425P----C). Leave the plug as it is. If the air around the detector is polluted and
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