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YOKOGAWA RC400G Residual Chlorine Analyzer |
YOKOGAWA RC400G Residual Chlorine Analyzer
The RC400G residual chlorine analyzer employs a polarographic system that uses rotating platinum electrodes to provide continuous online measurement of residual chlorine concentration. By appropriate use of reagents, it is possible to separate residual chlorine (free chlorine + combined-chlorine) from free chlorine for measurement.
The RC400G is an intelligent residual chlorine analyzer that makes extensive use of microprocessors. Its design is based on the know-how gained through Yokogawa's many years of experience with residual chlorine analysis
Features
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Simple, one-touch calibration. Automatic sensor self-diagnostics (zero point, slope, response) during calibration. |
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Output range can be set in the field in case when the span is 1 mg/l or more. Remote switching 2-range capability is available. |
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Line-segment function available for output signal. |
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Simple verification of applied voltage/current characteristics (Plateau characteristic) between electrodes. Allows detailed knowledge of sensor characteristics for the target application to be obtained. |
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Improvements to rotating electrodes and glass bead cleaning have been added for even more effective automatic continuous cleaning. |
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Waterjet cleaning can be applied for the purpose of particularly dirty applications. |
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Easily maintained (easy-to-clean) cell construction. |
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Available for special version (for free chlorine measurement) designed to cope with very high concentrations of combined chlorine. |
Specifications
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Measurement object |
Free chlorine or residual chlorine (total chlorine) in water |
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Measurement method |
Rotating electrode type polarographic system |
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Measurement range |
0 to 10 mg/l (mg/l used as concentration units per JIS K0101 and municipal water test methods) |
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Output range |
Can be freely set within ranges with spans of 1 mg/l or greater |
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Output signal |
4 to 20 mA DC (load resistance, 550 Ω Max.) or 1 to 5 V DC (output resistance, 300 Ω Max.) |
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Sample conditions |
Temperature: 0 to 50℃
pH: 3 to 9
Flow: 1 to 4 l /min, for pure water or municipal water application.
5 to 10 l /min, for raw water or sea water application.
10 to 20 l /min, for secondary sewage treatment application.
Pressure: 20 to 500 kPa |
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Electrodes |
Measuring electrode: Rotating platinum electrode
Reference electrode: Platinum electrode (built-in Pt1000 Ω RTD) |
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Ambient Temperature |
-5 to 55℃ |
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Ambient Humidity |
5 to 95 % RH (non-condensing) |
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Installation |
Indoors (A separate rainproof cover is required for outdoor installation. Avoid direct sunlight.) |
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Power Supply |
100/110/220 V AC ±10 %, 50/60 Hz |
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Weight |
Approx. 65 kg (for pure water) |
Performance
(Percent display is computed with respect to whichever of output range 1 or output range 2 has the highest upper range value)
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Linearity |
±3 % |
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Repeatability |
2 % |
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Drift |
Zero drift: ±1 %/month Max.
Span drift: -5 %/month Max. |
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Response time |
Displayed as 90 % response time
For pure water: Approx. 2 min
For raw water (1-cylinder): Approx. 4 min
For raw water (2-cylinder): Approx. 4 min | |
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