NISE Nitrate analyzer

Instrument Features

• The new generation of sensors and membrane heads offers more stable performance

• Automatically compensates for the influence of interfering ions

• Built-in matrix calibration

• Samples require no pretreatment, suitable for all-weather continuous online monitoring

• The new protective coating ensures a longer service life of the membrane head

• Can be connected to the digital SC controller platform

• Optional cleaning unit reduces maintenance requirements

Principle of Operation

The nitrate nitrogen (NISE) analyzer uses ion-selective electrodes. The NISE sc sensor consists of a chloride ion-selective electrode, a pH electrode (reference electrode), and a temperature electrode integrated into a single body. Within this integrated electrode, i.e., the sensor cartridge (CARTRICAL technology), several parameters can mutually correct each other to reduce interference. The analyzer allows flexible online calibration, further improving measurement accuracy.

Technical Specifications

• Measuring method:                     Ion-selective electrode method, using nitrate nitrogen and chloride ion-selective electrodes and a reference electrode for potentiometric measurement

• Measuring range:                            0 to 1000 mg/L [NO3–N]

•                                       0 to 1000 mg/L [Clˉ]

• Accuracy:                        5% of reading + 0.2 mg/L1

• Reproducibility:                        5% of reading + 0.2 mg/L1

• Response time (90%):      < 3 min approx. (5 t o 5 0 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:                       Powered via SC controller

• Ambient data:     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)

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

• Max. flow velocity:                      < 4 m/s

• Max. immersion depth of sensor:    ：        0.3 - 3.0 m

• Max. pressure of sensor:                      0.3 ba r

• Max. 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 max. 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