Residual Chlorine Analyzer RC400G

*	Simple, one-touch calibration. Automatic sensor self-diagnostics (zero point, slope, response) during calibration.
*	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.
*	Line-segment function available for output signal.
*	Simple verification of applied voltage/current characteristics (Plateau characteristic) between electrodes. Allows detailed knowledge of sensor characteristics for the target application to be obtained.
*	Improvements to rotating electrodes and glass bead cleaning have been added for even more effective automatic continuous cleaning.
*	Waterjet cleaning can be applied for the purpose of particularly dirty applications.
*	Easily maintained (easy-to-clean) cell construction.
*	Available for special version (for free chlorine measurement) designed to cope with very high concentrations of combined chlorine.

Measurement object	Free chlorine or residual chlorine (total chlorine) in water
Measurement method	Rotating electrode type polarographic system
Measurement range	0 to 10 mg/l (mg/l used as concentration units per JIS K0101 and municipal water test methods)
Output range	Can be freely set within ranges with spans of 1 mg/l or greater
Output signal	4 to 20 mA DC (load resistance, 550 Ω Max.) or 1 to 5 V DC (output resistance, 300 Ω Max.)
Sample conditions	Temperature: 0 to 50 deg C 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
Electrodes	Measuring electrode: Rotating platinum electrode Reference electrode: Platinum electrode (built-in Pt1000 Ω RTD)
Ambient Temperature	-5 to 55 deg C
Ambient Humidity	5 to 95 % RH (non-condensing)
Installation	Indoors (A separate rainproof cover is required for outdoor installation. Avoid direct sunlight.)
Power Supply	100/110/220 V AC ±10 %, 50/60 Hz
Weight	Approx. 65 kg (for pure water)

(Percent display is computed with respect to whichever of output range 1 or output range 2 has the highest upper range value)

Linearity	±3 %
Repeatability	2 %
Drift	Zero drift: ±1 %/month Max. Span drift: -5 %/month Max.
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