RS485 Output High Quality High Accuracy Water quality online
residual chlorine detector
1. Applications
Kacise on-line residual chlorine sensor is used to monitor the
residual chlorine content continuously in drinking water treatment
plant, canning plant, drinking water distribution network, swimming
pool, cooling circulating water, water quality treatment project.
2. Feature
- Digital sensor, RS-485 output, support MODBUS.
- Wide range, automatic switching measuring range.
3. Technical Specifications
| Module No. | KWS-3000 |
| Principle | the constant voltage method |
| Range | 0～2.000mg/L(HClO) |
| Accurate | ±5% or ±0.05mg/L |
| Resolution | 0.001mg/L |
| Calibration Function | Two point Calibration (Zero and Slope ) |
| Temperature Compensation | Temperature compensation automatically (Digit temperature sensor) |
| Working temperature | 0 ~ 50℃ |
| Output | Support RS-485, MODBUS protocol |
| Power Supply | 12～24VDC±10% |
| Velocity | 30-60 L/h |
| Installation | Circulation pool installation |
| size | 30×233mm(Φ×L) |
| Protection | IP68 |
| Material | Polyacetal resin, PTFE, Gold, Silver Polyformaldehyde resin, teflon, gold, silver, electro conductive
rubber |
4. Outline
5. Electric Connect
The electrode should be installed closely with the circulation
pool. The electrode measurement part should be placed in the area
near the circulation pool inlet. It is not allowed to face the
outlet. Ensure the smooth flow . We suggest to control the flow
rate within 30-60l /h to ensure the test accuracy.
Red: Power supply (12~24V)
Black: Ground(GND)
Blue: 485A
White: 485B
Exposed wire: shielded wire
Please make sure that you connect the wire correctly.
Cable specifications: the cable has a certain corrosion resistance,
considering that it has been immersed in water (including seawater)
or exposed to air for a long time. The diameter is Φ6 mm. Please
make the waterproof processing on cable joint.
5. Maintenance
1) Sensor detection and maintenance
The new electrode and the electrode placed for a long time should
be activated before use. The sensor shall be left in the tap water
for 24 hours.If the returned value is not correct, please make the
following operation.
- Calibration of zero point and slope of electrode
- Returned to the factory for inspection.
2) Calibration of sensors
a) zero point calibration: the sensor probe is placed in
chlorine-free water for zero point calibration after the numerical
stability.
B) slope calibration: the sensor probe is placed in the flow pool
with residual chlorine standard liquid, and the slope calibration
is performed after the value is stable. Suggest to use 1-2mg/L HCIO
standard solution. About the preparation and determination of the
standard liquid, we can refer to the determination of residual
chlorine standard.
Note: the sensor has been calibrated before delivery. Since the
preparation of its standard liquid has high requirements on
personnel, non-professionals may not be qualified for this job.
Only if the value is determined to be inaccurate, it is recommended
that the user do not calibrate the sensor.
