LumaSense Technologies INNOVA 1309 - Manual (Page 7)

Chapter 1
________________________________________________________________________
________________________________________________________________________
BE1285-15 1309 Multipoint Sampler LumaSense Technologies A/S
Page 7 of 42
1.1 Description and Function
1.1.1 The Sampler System
The pneumatic system of the 1309 is shown schematically in Fig.1.1.
The sampler system is constructed of stainless steel (AISI 316) and
PTFE (PolyTetraFluoroEthylene) tubing to minimize adsorption of sam-
ples. The system has 12 inlet channels, each with a solenoid valve.
Each inlet channel has a tube-mounting stub on the front-plate of the
1309; to connect each channel to the respective sampling point. The 12
inlet channels converge into one; a three-way valve then directs the
gas sample to the Gas Monitor for analysis, or through the external
pump via the waste-air outlet on the 1309’s back-plate.
The 1309’s sampler system functions efficiently, transporting gas sam-
ples from the sampling point at approximately 4 metres per second.
However, this speed depends on the type of pump, the diameter of the
tubing and the length of tubing attached to the 1309. An air-filter is at-
tached to the end of each sampling tube to keep the samples free of
particles.
Fig. 1.1 A schematic diagram of the 1309’s pneumatic system.