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MODEL SOLU COMP II SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
7
When used with an oxygen permeable membrane-
covered amperometric sensor, display choices are
ppb or ppm dissolved oxygen or % saturation.
Because the permeability of the membrane is a func-
tion of temperature, a correction is necessary when
the sensor is used at a temperature different from the
one at which it was calibrated. The Solu Comp II
automatically applies the temperature correction fac-
tor. The process temperature is measured by an RTD
in the sensor. Calibrating the analyzer is as simple as
exposing the sensor to air and keying in the baromet-
ric pressure. If removing the sensor from the process
is impractical, the analyzer can also be calibrated
against a standard instrument. Solubility correction
factors for liquids containing high concentrations of
electrolytes can be registered into the analyzer. The
Solu Comp II automatically calculates ppb/ppm dis-
solved oxygen taking into account the high salt con-
centration.
PERFORMANCE SPECIFICATIONS
Measurement Range: 0-20 ppm (mg/L) dissolved
oxygen; 0- 250% saturation
Resolution: 0.01 ppm; 0.1 ppb for 499A TrDO sensor
(when O
2
<1.00 ppm); 0.1%
Temperature Correction for Membrane Permeability:
Automatic (with Pt100 RTD in sensor) or manual
0-50°C. Can be disabled if desired.
Input filter: 1- 255 samples
RECOMMENDED SENSORS
Model 499A DO Dissolved Oxygen Sensor
Model Hx438 Steam Sterilizable Dissolved Oxygen
Sensor
Model Gx438 Steam Sterilizable Dissolved Oxygen
Sensor
Model 499A TrDO Trace Dissolved Oxygen Sensor
(soon to be released)
DISSOLVED OXYGEN (Code -25)
For use with an ozone permeable membrane-covered
amperometric sensor. Because the permeability of the
membrane is a function of temperature, a correction is
necessary when the sensor is used at a temperature
different from the one at which it was calibrated. The
Solu Comp II automatically applies the temperature
correction factor. The process temperature is meas-
ured by an RTD in the sensor. The Solu Comp II is
calibrated taking a measurement of the ozone level in
the process by an independent chemical method and
setting the display equal to the measured value. An
input filter allows the user to configure the analyzer
for rapid response of low noise. The low noise option
is recommended for samples containing less than 0.1
ppm dissolved ozone.
PERFORMANCE SPECIFICATIONS
Measurement Range: 0-10 ppm (mg/L)
Resolution: 0.001 ppm dissolved ozone
Temperature Correction for Membrane Permeability:
Automatic (with Pt100 RTD in sensor) or
manual 0-35°C. Can be disabled if desired.
Input filter: time constant 1 - 999 sec
RECOMMENDED SENSOR
Model 499A OZ Dissolved Ozone Sensor
LOOP SPECIFICATIONS WITH A MODEL
499A OZ SENSOR
Loop Accuracy: ±5% of reading or ± 3 ppb at 25°C,
whichever is greater
Repeatability: ±2% of reading at a constant tempera-
ture
DISSOLVED OZONE (Code -26)
10.34 ppm
29.3 C 12.34mA
10.34 ppm
29.3 C 12.34mA