Sulfates

Colorimetric, Online Analyzers

SO42-

Applications

  • Drinking water
  • Waste water
  • Raw water
  • Process control
Sulfates
Sulfates

Description

The determination ranges of the sulfate analyzer vary from 0.5 to 5000 mg/L SO42- using internal dilution module.

Method

This method is an adaptation of the turbidimetric method to measure sulfates. Sulfate ions are precipitated as barium sulfate with an excess of barium chloride. A conditioning reagent is added to maintain the barium Sulfate suspension. When the reagent is added to a sample containing Sulfate, it will cause turbidity in the sample. The absorbance (turbidity) intensity is proportional to the Sulfate concentration in the sample and is measured at 430 nm.

Reagents

Standard solutions

Features

Range
(Ø 26 mm)		 50 ppm
Range
(Ø 16 mm)		 100 ppm
Range
(with dilution)		 8000 ppm
Wavelength 430 nm
Number of reagents 2
Min. analysis time 6 minutes

Technical Specifications

Model 3S-CL
Sampling Mode Batch, with freely settable frequency.
Sample Pressure: Atmospheric
Temperature: 5 ‐ 45°C (41 ‐ 113°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 210 mm (23.6 x 14.8 x 8.2 in)
Weight 20 kg (44 lbs)
Power Supply Input Voltage: 115 VAC,230 VAC,24 VDC
Power consumption: max. 80 W
Output signals 2 x 4-20 mA analog outputs
Modbus via RS485,Ethernet
Alarms 2 SPDT programmable voltage-free relays
Digital Input None, Online, Start Extra, Skip Idle, Emergency Stop
Ambient Temperature 5 - 45 °C (41 - 113 °F)
Ambient Humidity 10 - 90 % RH
Protection Grade IP54 (indoor only, outdoor use possible with external cabinet, not included)

Documentation

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