DESCRIPTION:
The Series RAH-210 Analyzer makes use of the Amperometric method to determine residual levels
in the sample water. The measurement cell consists of large Gold and Copper electrodes in direct
contact with the sample water. The measurement is continuous, not relying on sample and hold
methods, thereby allowing for better process control. A continuously driven cleaning system is
employed to prevent the build up of impurities on the surface of the electrodes and reduce the need
for maintenance.
The Series RAH-210 Free Chlorine Analyzer is available with pH & Temperature compensation
performed in software. For applications with consistent pH levels in the process water, the known
pH value can be manually input for software compensated residual analysis. A gravity driven buffer
feed system is also available to inject the required chemicals for measuring Total Chlorine, Chlorine
Dioxide, Iodine and Bromine. For Free Chlorine measurement, vinegar can be used as the pH buffer
reagent. The measurement range is field adjustable through menu driven digital programming.
This analyzer includes a complete PID control program as a standard feature.
INSTRUMENTS
1501 W. Park Avenue, Perkasie, PA 18944
Temperature Range: 0 to 50 C (32 to 120 F)
Sample Water Flow Rate: 500 ml/minute (0.13 GPM or 8 gal/hr)
Sample Pressure: 5 psig (0.3 bar) maximum at inlet point.
Sample Supply: Continuous. Electrodes must be kept wet with fresh water.
Speed of Response: 4 seconds. Full-scale residual change 90 to 120 seconds.
Sample Water: Metal ions or corrosion inhibitors effect operation.
Range: 0 to 0.1 to 0 to 20 mg/l (PPM). Field adjustable.
Accuracy: 0.003 mg/l or +/-1% of range, whichever is larger.
Sensitivity: 0.001 mg/l (1 ppb)
ELECTRICAL
Power Consumption: 10 W max
Power Requirements: 120VAC, 50/60 Hz or 240VAC, 50/60 Hz, single phase
Output Signal: (2) 4-20 mA
Relay Contact: 10 Amps @ 120 VAC or 24 VDC, resistive load, 5 Amps
@ 240 VAC, resistive load
REAGENT REQUIREMENTS
Measured Chemical Residual Reagents Required
Free Chlorine (pH Compensated): None
Free Chlorine (not pH Compensated): pH Buffer or CO
Total Chlorine: pH Buffer or CO
Chlorine Dioxide: pH Buffer and Glycine
Bromine Chloride: pH Buffer or CO
Iodine: pH Buffer or CO
2 gas2 gas and Potassium Iodide2 gas and Potassium Iodide2 gas
Series RAH-210
Residual Chlorine Analyzer
INSTRUMENTS
Basic Specifications:
Series RAH-210
Residual Chlorine Analyzer
• Amperometric Residual Analyzer
• Available with pH & temperature
compensation without buffer chemicals
for Free Chlorine
• Free Chlorine, Total Chlorine, Chlorine
Dioxide, Bromine, and Iodine
• Includes complete PID control program
(standard)
• Provides two analog outputs (selectable
between residual, pH and control signals)
and one alarm relay
• Adjustable measurement range
• Continuous Measurement/Fast Response
• Continuous sensor cleaning mechanism
This product was added to our catalog on Wednesday 15 July, 2009.
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