Vaisala PTU300 - Manual (Page 29)

Chapter 2 ___________________________________________________________ Product Overview
VAISALA ________________________________________________________________________ 27
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Figure 5 Probe Options
The following numbers refer to Figure 5 above:
1 = PTU303 Probe for general use
2 = PTU307 for demanding processes (optionally warmed probe)
3 = Temperature probe
For probe cable lengths, see Table 41 on page 186.