MODEL SOLU COMP II
SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
7
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
The Solu Comp II is compatible with the Model
499ADO, 499ATrDO, Hx438, and Gx438 dissolved
oxygen sensors. The sensors are membrane-covered
amperometric sensors. For more information con-
cerning the use and operation of the amperometric
oxygen sensors, refer to the product data sheets.
The Solu Comp II displays dissolved oxygen in ppm,
ppb, or percent saturation.
The Solu Comp II fully compensates oxygen readings
for changes in membrane permeability caused by
temperature changes. In the Model 499ADO and
499ATrDO sensors, temperature is measured by a
Pt 100 RTD. The Hx438 and Gx438 sensors use a
22kNTC.
Calibration is easy. Simply expose the sensor to
water saturated air. Wait until readings are stable and
press a few keys. The analyzer measures the tem-
perature and barometric pressure and automatically
completes the calibration. If removing the sensor
from the process liquid is impractical, the analyzer
can be calibrated against a standard instrument.
Calibration can be corrected for process salinity.
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:
time constant 1 - 999 sec
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
DISSOLVED OXYGEN (Code -25)
10.34 ppm
29.3 C
12.34mA
