AISE Ammonia nitrogen electrode

Principle of operation

The AISE sc online ammonia nitrogen sensor uses the electrode method to measure ammonia nitrogen. The online ammonia nitrogen sensor consists of a potassium ion selective electrode, a pH electrode (reference electrode), and a temperature electrode integrated into a single-body electrode. The single-body electrode, i.e., the online ammonia nitrogen sensor body (CARTRICAL technology), allows several parameters within it to correct each other and reduce interference. The A ISE sc online ammonia nitrogen monitoring/analyzer online ammonia nitrogen sensor enables flexible online calibration, further improving measurement accuracy.

Features and benefits

• The new generation of online ammonia nitrogen sensor and membrane head offers more stable performance

• The AISE sc online ammonia nitrogen sensor automatically compensates for the influence of interfering ions

• The AISE sc online ammonia nitrogen sensor features built-in matrix calibration

• No sample pretreatment required, suitable for all-weather continuous online monitoring

• The all-new protective coating of the AISE sc online ammonia nitrogen sensor ensures a longer service life of the membrane head

• The AISE sc online ammonia nitrogen sensor can be connected to the digital SC controller platform

• The AISE sc online ammonia nitrogen sensor can be optionally equipped with a cleaning unit, resulting in low maintenance

Technical specifications

• Measuring method:                            Ion selective electrode method

•                                              Potentiometric measurement using ion selective electrodes for ammonia nitrogen and potassium and a reference electrode

• Measuring range:                                   0 to 1000 mg/L [NH4–N]

•                                              0 to 1000 mg/L [K+]

• Accuracy:                               5% of measured value + 0.2 mg/L1

• Reproducibility:                               5% of measured value + 0.2 mg/L1

• Response time (90%):             < 3 minutes approx. (5 to 50 mg/L)

• Measuring interval:                           Continuous measurement

• pH range:                         pH 5 - pH 9

• Calibration method:                          Sensor membrane head code (containing factory calibration information in code form), single-point and two-point matrix calibration

• Power consumption:                                1W

• Power supply:                                Powered via SC controller

• Data transmission ambient data:           Powered via SC controller

• Storage temperature:                        Sensor: –20 to 60 °C (–4 to 140 °F)

• Salt bridge:                               5 to 40 °C (41 to 104 °F)

• Operating temperature:                        Ambient temperature: –20 to 45 °C (–4 to 1 13 °F)

• Water sample temperature:                        +2 to 40 °C (35 to 104 °F)

• Maximum flow velocity:                        < 4 m/s

• Maximum immersion depth of sensor        Depth: 0.3 - 3.0 m

• Maximum pressure of sensor:                       : 0.3 ba r

• Maximum pressure of air compressor:              3.1 bar

• Dimensions:                               320 mm x 84.5 mm (length x Ø)

• Cable length:    Standard length:   10 m, optional lengths: 5, 10, 15, 20, 30, 50 m, optional maximum extension length: 100 m

• Weight:                               Approx. 2380 g

Ordering guide

• LXV440.99.10012 AISE ammonia nitrogen analyzer (including one calibrated sensor membrane head)

• Accessories and replacement parts

• LZY694    Sensor measuring membrane head (for AISE/NISE/AN-ISE, calibrated)

• LZY706    Cleaning unit

• 6860100    Self-cleaning air compressor, 230V

• 6184900    Rail-mounted assembly, PVC

• LZX914.99.12400    Chain-mounted assembly, PVC

• LZY714.99.32620    Wall-mounted assembly, stainless steel

Source: Public information from the HACH Water Quality website