PO43-

Applications

  • Power Utility
  • Cooling water
  • Drinking water
  • Boiler feedwater
  • Industrial and municipal wastewater
  • Surface water
Phosphates

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 glass cell. The sample, comining 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)

The determination ranges of the phosphate analyzer vary from trace μg/L to 2000 mg/L PO43- using the (optional) internal dilution module. Ranges also depend on the method used.

Method

This parameter has more than one analytical method. Choose one below.

Molybdate reacts in acid medium with orthophosphate to form phosphomolybdic acid, which is then reduced to intensely colored molybdenum blue. The absorbance intensity is proportional to the phosphate concentration in the sample and is determined at 850 nm.

Features

Range
(Ø 26 mm)
4 ppm P-PO4 (12.5 ppm PO4)
Range
(Ø 16 mm)
10 ppm (as P-PO4)
Range
(with dilution)
400 ppm P-PO4 (1200 ppm PO4)
Wavelength 850 nm
Number of reagents 2
Min. analysis time 8 minutes

Reagents

  • PO4B-CL-R12KIT-1 - Phosphate reagents (blue, predosed powders) 1 L
  • PO4B-CL-R12KIT-5 - Phosphate reagents (blue, predosed powders) 5 L
  • PO4B-CL-R12SZ-1 - Phosphate reagents (blue) 1 L

Standard solutions

  • PO4-STDSZ-1000M-1 - Phosphate standard solution 1000 ppm, 1 L

The reagent, containing sodium molybdate and ammonium meta-vanadate in an acid medium, reacts with the orthophosphate to form a yellow coloured phospho-vanado-molybdate compound. The absorbance intensity is proportional to the phosphate concentration in the sample and is determined at 430 nm.

Features

Range
(Ø 26 mm)
10 ppm P-PO4 (30 ppm PO4)
Range
(Ø 16 mm)
16 ppm (as P-PO4)
Range
(with dilution)
640 ppm P-PO4 (2000 ppm PO4)
Wavelength 430 nm
Number of reagents 1
Min. analysis time 8 minutes

Reagents

  • PO4Y-CL-R1KIT-1 - Phosphate reagents (yellow, predosed powders) 1 L
  • PO4Y-CL-R1KIT-5 - Phosphate reagents (yellow, predosed powders) 5 L
  • PO4Y-CL-R1SZ-1 - Phosphate reagents (yellow) 1 L

Standard solutions

  • PO4-STDSZ-1000M-1 - Phosphate standard solution 1000 ppm, 1 L

Technical Specifications

Model CL
Analysis Mode Batch, near continuous operation.
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.)
Streams 1, 2 with integrated switching valve
3, 4 with external sequencer
Frame 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)
International Protection IP54
Phosphates - Technical Drawing

Documentation

Related Accessories