Specifications

MODEL 30 pH/DO SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
4
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 Model 30 auto-
matically applies the temperature correction factor.
The process temperature is measured by an element
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
Model 30 automatically calculates ppb/ppm dissolved
oxygen taking into account the high salt concentration.
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
DISSOLVED OXYGEN
10.34 ppm
29.3*C12.34mA