Online Nitrite Analyser
Monitor nitrite in drinking water, wastewater and process streams using automated colorimetric chemistry.

Online Nitrite Analyser with AccuSeries
AccuSeries can automate colorimetric nitrite measurement for suitable water, wastewater and industrial applications. The configuration is selected around the concentration range, sample matrix and required analysis frequency. Read PMAโs independent nitrite application guide for wider measurement context.
Every configuration is application-specific. Confirm the analyte, expected range, sample composition, temperature, suspended solids, number of streams and required outputs with PMA before selection. Explore the AccuSeries online wet chemistry analyser and its water and process applications.
Programmable online nitrite analysis
AccuSeries automates sample handling, method execution, result calculation and reporting for configured nitrite measurement while operators monitor status through the graphical interface.
01 / CONFIGURED METHOD
A method matched to nitrite and the process
Each analyser is configured around nitrite, the required range, sample matrix and recognised analytical method.
- Approved method for nitrite
- Configured range and sample matrix
- Method-specific nitrite result calculation
02 / AUTOMATIC OPERATION
Sampling, calibration and cleaning
Programmable routines support repeatable nitrite measurement while diagnostics and alarms alert users to changing analyser or process conditions.
- Automatic sampling
- Automatic calibration
- Automatic cleaning
A controlled nitrite measurement sequence
Each nitrite result follows a configured sampling, reagent, measurement, calculation and maintenance sequence.
01.
Capture the sample
The internal fast loop and sample mechanism provide a representative, consistent sample volume for nitrite analysis.
02.
Add method reagents
The programmed sequence doses the reagents required for the selected nitrite method.
03.
Run the configured method
The approved nitrite method proceeds under controlled conditions.
04.
Calculate the nitrite result
The measured response is converted into the configured nitrite concentration result.
05.
Calibrate
Automatic calibration can run against configured nitrite standards at selected intervals.
06.
Clean
Automatic cleaning supports the nitrite measurement system between planned maintenance visits.
Designed for practical nitrite monitoring
The modular AccuSeries design keeps wet-chemistry components accessible while nitrite results, diagnostics and method controls remain available through the interface.
Touchscreen
Clear access to nitrite results, status and analyser functions.
Data logging
Integrated nitrite result storage with USB export.
Separate compartments
Electronic and wet-chemistry sections are physically separated.
Low reagent use
Small reagent volumes help control nitrite measurement costs.

Nitrite technical specifications
Core AccuSeries information for nitrite application and specification review.
| Measurement principle | Application-specific approved method |
| Variables | Nitrite, range and sample matrix dependent; approved method |
| Typical response | T-90 typically 3 to 15 minutes; method dependent |
| Power supply | 24 VDC or 90 to 240 VAC; 310 W |
| Sampling | Single stream or up to 6 streams |
| Cabinet | Painted 304 stainless steel |
| Protection grade | IP66; NEMA 4X |
| Outputs | 4-20 mA; optional Modbus TCP/IP or serial |
| Automatic functions | Sampling, calibration, validation and post-wash as configured |
Nitrite, range, sample conditions, wetted materials and final specifications must be confirmed for the configured method before procurement.
Discuss your nitrite measurement
Tell PMA about your sample, measuring range and process objective. An applications engineer will review whether AccuSeries and an available analytical method are appropriate.
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