Hach Ultra ORBISPHERE 3624, Руководство оператора

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38 of 96 Instrument Setup - 3624 ProBrix Plus
Operator Manual
ORBISPHERE
With your system in
Measurement Mode
, press the
ESC
key to display the main
MODIFY OPTIONS
menu. Note that if you press the ESC key while your instrument is in
Measurement Mode, this will trigger a System alarm.
Using the up/down arrow keys, highlight
OPTIONS
from the main menu and press
ENTER
to bring up the
MODIFY OPTIONS
menu.
3.1 Display Units
This option allows you to specify the units of measurement and the display resolution (i.e.
decimal point placement).
Under the
MODIFY OPTIONS
menu, highlight
DISPLAY UNITS
and press
ENTER
.
Choose
CO2
or
BRX
to bring up the associated display units menu.
3.1.1 CO
2
Choose the measurement type (
DISSOLVED
,
FRACTION
or
PARTIAL PRESSURE
).
For
DISSOLVED
, select the sampling media (
WATER
,
BEER
or
COLA
) to apply a pre-
defined density factor.
Regardless of the sampling media, the next step is to choose your preferred display units
from the available choices as outlined in the table below:
DISSOLVED
PARTIAL PRESSURE
FRACTION
Next, choose one of the options displayed to set the placement of the decimal point on
the lowest measurement range. Finally select the temperature units (
°C
,
°F
or
°K
).
3.1.2 BRX
First enter the product number you wish to access, after which select your preferred
measurement units (
°brix
,
%diet
,
T.A.
or
g/cc
). Next, set the decimal point placement
and temperature units as above.
Table 3-1:
Dissolved CO
2
Units
%
Gas concentration in percentage, by weight
V/V
Gas concentration in volume per volume (ratio)
g/kg
Gas concentration in grams per kilogram
Table 3-2:
Partial Pressure CO
2
Units
bar
Gas pressure in bar
mbar
Gas pressure in millibars
kPa
Gas pressure in kilopascals
psia
Gas pressure in pounds per square inch, absolute
Atm
Gas pressure in atmosphere
Table 3-3:
Fraction CO
2
Units
%vbar
Percentage of gas volume, calculated at barometric pressure using the instru-
ment's internal pressure sensor ([partial pressure / internal pressure] * 100)