NO3-

Applications

  • Drinking water
  • Process optimisation of wastewater treatment plants
  • Industrial and municipal wastewater
  • Mineral water monitoring
  • Surface water
Nitrates
Nitrates

Description

The instrument is ideal for potable water or suface water analysis and with the addition of a dilution module is also capable of the determination of nitrates in complex matrices such as urban and industrial wastewaters.
The determination ranges of the nitrate analyzer vary from trace μg/L to 25.0 mg/L N-NO3 (80 mg/L NO3) using the (optional) internal dilution module. The result can be expressed as NO3 or N-NO3.

Method

Both hydrazine and copper catalyst reagents are used to reduce Nitrate to Nitrite in a basic medium inside a heated reaction cell. A sulfanilamide and N-(1-naphthyl)-ethylene diammonium dichloride reagent is added to react with the Nitrite to form a purple colored complex. The absorbance intensity is proportional to the Nitrite concentration in the sample and is measured at 525 nm

Features

Range
(Ø 26 mm)
400 ppb N-NO3 (1.28 ppm NO3)
Range
(Ø 16 mm)
650 ppb N-NO3 (2.08 ppm NO3)
Range
(with dilution)
25 ppm N-NO3 (80 ppm NO3)
Wavelength 525 nm
Number of reagents 2
Min. analysis time 14 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

Documentation

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