Panametrics HydroProII, User Manual

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HygroPro
II
User's Manual 17
Chapter 2. Operation
Chapter 2. Operation
2.1 Powering Up & Programming
After the HygroPro
II
has been installed in a process as described in Chapter 1 (Installation), 12 – 28 V DC power may
be applied to the unit. The loop-powered transmitter will show a start-up screen and may require up to 60 seconds
for properly initializing, and subsequently commencing normal operation.
The unit will meet its specified Dew Point accuracy within 3 minutes. As noted in the previous Chapter, dry down
response of the HygroRTE probe depends on the initial moisture level of the AlOx sensor. If the probe has been kept
sufficiently dry using the desiccant cap and not exposed to the ambient moisture, it will typically dry down to < 5
PPMv (-65°C Dew Point at 1 atm pressure) in under 15 minutes.
Figure 15 below shows a close-up view of the HygroPro
II
display and keypad, and Figure 16 on the next page shows a
complete menu map of the HygroPro setup program.
Figure 15: HygroPro
II
Display and Keypad