MODEL SOLU COMP II
SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
When used with a chlorine specific membrane-covered
amperometric sensor, display choices are free chlorine
or total chlorine. (Total chlorine measurement requires
the use of the Model SCS921 or other sample condi-
tioning system). Because the permeability of the mem-
brane is a function of temperature, a correction is nec-
essary when the sensor is used at a temperature dif-
ferent 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. An input filter allows the
user to configure the analyzer for rapid response or
low noise. The low noise option is recommended for
samples containing less than 0.1 ppm ozone.
pH is also a factor in the measurement of free chlo-
rine. An aqueous solution of free chlorine is a mixture
of hypochlorous acid and hypochlorite ion. The rela-
tive amount of each depends on the temperature and
pH. Generally, increasing the pH and temperature
reduces the amount of hypochlorous acid in the mix-
ture. Because the response of the sensor to
hypochlorous acid is greater than its response to
hypochlorite, accurate determination of chlorine
requires knowledge of the pH and temperature of the
sample. If the pH is relatively constant, a fixed pH cor-
rection factor can be entered into the analyzer. If the
pH is greater than 7 and fluctuates by more than 0.2,
continuous measurement of the pH and automatic pH
correction is necessary. For automatic pH correction,
select code -32 and an appropriate pH sensor.
PERFORMANCE SPECIFICATIONS
Measurement Range:
0-20 ppm (mg/L) chlorine (as
Cl
2
)
Resolution:
0.001 ppm
Automatic pH Correction (requires Code -32):
5.0
to 9.5 pH
Temperature Correction:
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
Chlorine:
499A CL-01 Free Chlorine or 499A CL-02
Total Residual Chlorine (requires sample condi-
tioning)
pH:
399-09-62, 399VP-09, 399-14
For use with most pulse signal flow sensors, the Solu
Comp II's user selectable units of measure include
flow rates in GPM (Gallon per minute), LPM (liters per
minute), or m3/hr (cubic meters per hour), and veloci-
ty in ft/sec or m/sec. When configured to measure
flow, the unit also acts as a totalizer in the chosen unit
(gallons, liters, or cubic meters).
Dual flow instruments can be configured as a %
recovery device or a flow difference device.
PERFORMANCE SPECIFICATIONS
Frequency Range:
0.5 - 4000 Hz
Flow Rate:
0 - 9999 GPM, LPM, m3/hr
Totalized Flow:
0 - 9,999,999 Gallons;
37,850,000 Liters; 37,850 m3
Accuracy:
±1% (±1.5% from 3000 to 4000 Hz)
Repeatability:
±1%
RECOMMENDED SENSORS
+GF+ Signet 515 Rotor-X Flow sensor Model
515/8510-XX (PN P51530-PO)
Fluidyne Flow Sensor Model 2300A
(PN Hydro-Flow-2300-A-10-5R-3-1-1)
Consult factory for other pulse type sensor compatibility.
FREE AND TOTAL CHLORINE (Code -24)
FLOW
(Standard on all models or stand alone, Code -23 and/or -33)
S2 12.34 GPM
S2 47.25K Gal
12.34 ppm
26.3 C
8.34pH
6
