B&G Hydra 2000, User Manual

Page: 38 / 147

Hydra 2000 User Manual
Part 2 - Operating Information
HB-0844-02
2-22
2.11.5 Barometric Pressure
Menu Heading: MISC
Function Text: BAROMETER
Update Rate: Once per second
Units: Millibars
Notes
1. Requires pressure sensor.
2. Offset calibration available.
This is essential for the Offshore Sailor, giving not only the
instantaneous barometric value but also the important trends
towards higher or lower pressure. This helps position you in a
weather system and so predict the next change.
After installation it is essential that the calibration (CAL VAL1) of
the pressure sensor is checked against an accurate barometer
and adjusted accordingly. To select CAL VAL1 for calibration
proceed as follows:
MISC
→
BAROMETER, CALBRATE
→ →
CAL VAL1
2.11.6 Barometric Pressure Trend
Menu Heading: MISC
Function Text: PR TREND
Update Rate: Once per second
Units: Millibars
This shows the change in pressure over a period of time that can
be set for up to 24 hours. The period can be changed by
selecting a control option in the OPERATION Menu using the
following sequence:
MISC
→
PR TREND, CONTROL
→ →
PERIOD
A reset facility at the same menu level is also provided. This is
selected using the following sequence:
MISC
→
PR TREND, CONTROL
→ →
RESET
This operation resets the data collected to zero.