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72 UDA2182 Universal Dual Analyzer Product Manual January 2009
Sub-menu
selection
Parameter Selection or
Range of
Setting
Parameter Definition
PV Type DO% Sat
DO Concen
(default)
The concentration of oxygen dissolved in water (or
other liquid) may be described by either “dissolved
oxygen (DO) concentration” or percent saturation.
The units for DO are either parts per million - PPM
(equivalent to milligrams per liter) or parts per billion -
PPB (equivalent to micrograms per liter). The units of
saturation are percent where 100% saturation is
equivalent to the concentration of oxygen dissolved in
air-saturated water. For instance, at 25°C and one
atmosphere pressure, 8.24 ppm = 100% saturation.
Although the ppm and ppb concentration units are the
most frequently used units by far, % saturation may
be appropriate for non-aqueous liquids like vegetable
oil.
PV Range 0 – 200 ppb,
displayable to
20000ppb
0-20 ppm
0 – 100% sat,
displayable to
200% sat
Read Only
Temp Type
5000Ω Therm
Default
1000Ω RTD
Manual
5000Ω Thermistor
1000Ω Resistance Temperature Detector
Manual
Temp Deg C or F
(Temp Type =
Manual)
0 to 60ºC
32 to 140ºF
Temp Deg F or C will appear depending on what
Temperature Unit was selected in “Maintenance”
setup group, parameter “Temp Units”.
Salinity Type
Manual
(default)
Conduc Input
Salinity is used to correct for salt in the process water.
Manual
Valid only if conductivity board is present.
Salinity ppt
“Manual” Salinity
type only
0.00 to
40.00ppt
default = 0.00
(parts per thousand) as sodium chloride
0.0 = No selection
Pressure Type Manual
Sensor
(default)
Allows manual entry of atmospheric pressure
compensation
Internal sensor for atmospheric pressure
compensation during air calibration
Input 1 or
Input 2
DO
Dissolved
Oxygen
Pressure mm Hg
(Manual Pressure
type only)
500.0 to 800.0
default = 760
mmHg
Atmospheric pressure compensation.
Enter a value in mmHg.