Hach LDO, Руководство пользователя

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23
Operation
5.5 Pressure and Elevation
Note: If the barometric pressure from Table 4 is entered in the meter, the altitude entered in
combination with this value must be 0 feet.
Table 4 can be used to estimate the true barometric pressure at certain elevations. The
correspondence is based on the assumption that at sea level the barometric pressure is
760 mm Hg. After determining the barometric pressure from the table or obtaining it from a
local weather service, enter this value into the instrument, see
section 5.6.1 on page 24 .
5.5.1 Selecting Atmospheric Pressure
1. From the Main Menu, select SENSOR SETUP and confirm.
2. Select the appropriate sensor if more than one is attached and confirm.
3. Select CONFIGURE and confirm.
4. Select AIR PRESS/ALT UNITS. Select the appropriate units and confirm.
5. Select AIR PRESS/ALT. Change the value using the keypad and confirm the selection.
Note: AirPress/Alt must be correct for proper measurement of % saturation and operation of
air calibration.
DIAG/TEST
SOFTWARE VERS.
Displays the software version number
DRIVER VERS
Displays the software driver version number.
GAIN CORR
User Editable—to change the calibration gain. Range: 0.000–3.0
OFFSET CORR
User Editable—to change the calibration offset. Range: -3.0–3.0
PHASE DIAG
Information only—updated once per second
AMPL DIAG
Information only—updated once per second
SERIAL NUMBER
Serial number of the sensor
5.4 Sensor Setup Menu (continued)
Table 4 Elevation Barometric Pressure
Elevation in feet Barometric pressure in mm Hg Elevation in feet Barometric pressure in mm Hg
0 760 6000 613
500 746 6500 601