1.9 Chlorine (Code -24 and -34)
Free and Total Chlorine
The 56 is compatible with the 499ACL-01 free chlorine sensor and the 499ACL-02 total
chlorine sensor. The 499ACL-02 sensor must be used with the TCL total chlorine sample
conditioning system. The 56 fully compensates free and total chlorine readings for changes
in membrane permeability caused by temperature changes.
For free chlorine measurements, both automatic and manual pH corrections are available.
For automatic pH correction, select code P and an appropriate pH sensor. For more
information concerning the use and operation of the amperometric chlorine sensors and the TCL
measurement system, refer to the product data sheets.
Performance Specifications - Analyzer
Resolution: 0.001 ppm or 0.01 ppm – selectable
Input Range: 0nA – 100 µA
Automatic pH correction (requires Code P): 6.0 to 10.0 pH
Temperature compensation: Automatic or manual (0-50 °C).
Input filter: Time constant 1 - 999 sec, default 5 sec.
Response time: 6 seconds to 95% of final reading
Recommended Sensors
Chlorine: 499ACL-01 Free Chlorine or 499ACL-02 Total Chlorine
pH: The following pH sensor is recommended for automatic pH correction of free chlorine
readings: 3900
Monochloramine
The 56 is compatible with the 499A CL-03 Monochloramine sensor. The 56 fully
compensates readings for changes in membrane permeability caused by temperature
changes. Because monochloramine measurement is not affected by pH of the process, no
pH sensor or correction is required. For more information concerning the use and operation
of the amperometric chlorine sensors, refer to the product data sheets.
Performance Specifications - Analyzer
Resolution: 0.001 ppm or 0.01 ppm – selectable
Input Range: 0 nA – 100 µA
Temperature compensation: Automatic or manual (0-50 °C).
Input filter: Time constant 1 - 999 sec, default 5 sec.
Response time: 6 seconds to 95% of final reading
Recommended Sensors
Rosemount 499ACL-03 Monochloramine sensor
10 Description and Specifications
Section 1: Description and Specifications Instruction Manual
April 2017 LIQ-MAN-56
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