Hardness as CaCO3
Applications
- Power plants
- Cooling water
- Water steam cycle
- Boiler feedwater
- Reversed osmosis
- Ion exchangers
- Ultrapure water
- Drinking water
Description
The 3S colorimeter is a compact analytical instrumentation for online analysis and process monitoring. The colorimeter is based on a color-developing chemical reaction carried out inside the analyzer's glass cell. The sample, coming from an external reservoir or process stream is autonomously grabbed by the instrument and mixed with the appropriate reagents to make the reaction happen. The analyzer uses an LED light source and a photodiode to photometrically measure the developed color intensity (absorbance). The absorbance is proportional to the concentration of the target chemical species (analite).
Features:
- Low reagents consumption and analytical reliability thanks to our custom designed miniature peristaltic pumps
- Dual compartment design to guarantee a complete separation between the electronics and the hydraulic section
- Color touchscreen to show the last measured value clearly, and to set all the options and settings via an user friendly interface
- Datalogger function with data history in graphical form and USB download
- Automatic calibration, validation and cleaning to reduce down time and operator intervention, their frequency can be freely set by the user
- Fully integrable in industrial automation via the analog outputs (2 x 4-20 mA channels), digital output (2 relays + ModbusRTU) and digital input (voltage free contact)
Colorimetric analyzer for the determination of water hardness.
Method
The photometric determination is based on the reaction of calcium ions with an o-cresolphthalein complexone solution, which yields a violet colored complex. The intensity of the color is proportional to the calcium concentration in the sample. The absorbance of the complex is measured at 572 nm.
Reagents
- Hardness reagents (predosed powders) 1 L
- Hardness reagents (predosed powders) 2 L
- Hardness reagents (predosed powders) 5 L
- Hardness reagents 2 L
Standard solutions
Features
| Range (Ø 26 mm) |
500 ppb |
| Range (Ø 16 mm) |
1000 ppb |
| Wavelength | 572 nm |
| Number of reagents | 2 |
| Min. analysis time | 6 minutes |
Technical Specifications
| Model | CL |
| Sampling Mode | Batch, with freely settable frequency. |
| Sample |
Pressure-free vessel Temperature: 5 to 50 °C (41 - 122 °F) Flow Rate: 80 to 500 mL/min Connection: 6 mm (¼-in.) |
| Drain |
Pressure-free drain Connection: 12 mm (½-in.) |
| Input Streams | 2 |
| Cabinet Material | Epoxy-coated stainless steel AISI 304 |
| Dimensions (H x W x D) | 604 x 380 x 242 mm (23.6 x 14.8 x 9.4 in) |
| Weight | 20 kg (44 lbs) |
| Power Supply |
Input Voltage:115 - 240 VAC 50/60 Hz or 24 VDC (optional) Power consumption: max. 80 W |
| Output signals |
2 x 4-20 mA analog outputs Modbus RTU via RS485 |
| Alarms | 2 SPDT programmable voltage-free relays |
| Digital Input | Remote start / stop |
| Temperature | 5 - 45 °C (41 - 113 °F) |
| Relative Humidity | 10 to 90 % (indoor use, outdoor installation only possible with protective cabinet or shelter not included) |
| Protection Grade | IP54 |