IQ Sensor Net System IQ Sensor Net Alyza NH4 Ammonium Analyzer

Overview Specifications Documentation & Tools ;
  • WTW Alyza IQ NH4 Analyzer


WTW Alyza NH4 Analyzer for Ammonium provides accurate, reliable measurements for process control. The IQ Analyzer features a revolutionary MultiValve that dramatically reduces reagent use and maintenance requirements.

Product Features
  • Online, cabinet-style analyzer used for continuous monitoring of ammonium
  • Reliable, accurate measurements at low measurement concentrations
  • Extremely low reagent consumption, 15 µL per measurement
  • Automatic calibration, 1 or 2 point
  • Automatic cleaning, lowering maintenance requirements
  • Serviceable - safe and easy replacement of reagents, no need for expensive service contracts
  • One or two channel versions available
  • Reliable sample delivery pump built into the cabinet
  • Uses Indophenol method of detection
  • Filtration unit allows analyzer to process samples with solids concentrations up to 6,000 mg/L

The Alyza IQ NH4 is an online, cabinet-style analyzer used for continuous monitoring of ammonium in a municipal water resource recovery facility. This analyzer is weatherproof and can be deployed anywhere in the wastewater treatment process. Applications include monitoring biological tanks to help control ammonium-based aeration control and plant effluent locations to ensure compliance. An innovative MultiValve within the analyzer significantly reduces reagent use to 15 µL per measurement decreasing the analyzer's regular maintenance requirements. The analyzer is available as a single-channel or two-channel instrument allowing you to sample from two different locations. The IQ Analyzer can be used as a stand-alone analyzer or be incorporated into an IQ Sensor Net network of sensors. The IQ Analyzer provides accurate measurements with minimal maintenance requirements.

Applications include:

  • Ammonia-based aeration monitoring and control
  • Effluent monitoring to ensure compliance

Available Versions

SKU: 825011
NH4-111 Analyzer, 1-channel, with 2 measuring ranges, Indophenol method, connectable to IQ Sensor Net Systems 2020 and 282/284

SKU: 825012
NH4-112 Analyzer, 2-channel, with 2 measuring ranges, Indophenol method, connectable to IQ Sensor Net Systems 2020 and 282/284



NH4-111 Analyzer
MR1: ± 3 %, ± 0.02 mg/l, MR2: ± 3 %, ± 0.10 mg/l
Automatic 1- and 2-point calibrations
Automatic cleaning with cleaning solutions
Connectivity / Communications
interfaces via IQ Sensor Net-components, relays, Modbus TCP, analog outputs
30.5 x 26.6 x 17.5 in.
Dissolved Solids Limit
< 6 g/L (before filtration)
Equipment used with
IQ SensorNet 2020 3G Controller, 282/284 Controller
English, German
Measurement Method
Indophenol method
Measurement Range
MR1: 0.02 to 4.00 mg/l NH4-N, MR2: 0.10 to 20.00 mg/l NH4-N
Operating Temperature
-4 to 104 °F (-20 to +40) °C
Parameters Measured
120 VAC / 240 VAC, 50/60 Hz
Reagent Use
15 µL per measurement
MR1: 0.01 mg/l NH4-N, MR2: 0.05 mg/l NH4-N
Sample Streams/Channels
1- and 2-channel versions available
2 Years
81.6 lbs (37 kg) (without liquids)
Documentation & Tools

Documentation & Tools



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