What is the analytical range for nitrate and nitrite?

- Nitrate: 0.6 - 500 mg/L as NO3- (0.14 to 113 mg/L as N)
- Nitrite: 0.05 - 100 mg/L NO2- (0.01 to 23 mg/L as N)

What maintenance checks should be carried out by an operator?

A general visual inspection of the unit should be carried out to ensure the inlet filter line and tube are free from blockages. The inlet tube and filter could be rinsed on a regular basis to extend their lifetime.

What is the operating temperature range of the Aquamonitrix analyser?

The system can operate over a temperature range of 10°C to 40°C.

What is the maximum analysis frequency that can be achieved?

The system can analyser a sample every 15 minutes, which is equivalent to a maximum of 96 samples per day.

What is the maximum head the analyser can lift?

Up to 3 metres

What precautions should be taken to prevent the sample inlet becoming blocked in wastewater and raw water applications?

The sample intake system has been designed to be robust in wastewater, and its performance in septic tanks without clogging or blocking has been demonstrated in trials by the US EPA.

We are currently trialling performance in aeration basins. Here, some low-cost pre-filtration may be required.

How often does the analyser need recalibrating?

The Aquamonitrix analyser is pre calibrated in the factory and the calibration remains stable from deployment. This can be verified by a qualified PMA service engineer every 6 months if validation is required.

Where can I get the eluent reagents required for the analyser?

From PMA! Contact us via our reagents page on our website or e-mail us at  [email protected]

What if the analyser loses power, will it continue to run?

An internal battery is supplied as a backup feature. Its purpose is to allow the unit to ride through any short duration brown/black outs in the customer’s power supply. If the unit is in the process of a run when the power loss occurs, the sample will complete. From a fully charged state, the battery should hold for several days.

Can it be housed outside?

The unit is IP65 rated, so leaving it out in the rain shouldn’t have any negative impact. The only caveat would be that care should be taken with opening the unit to prevent exposing it to the elements.

What power supply does it need?

At the moment, the analyser is run off mains power and uses 15 - 25 V dc input power.
A version which can be run off DC power (such as solar or batteries is under test right now). Power consumption is <50W max.

How often do the eluent reagents need to be refilled?

The duration before a reagent-re-filled is required depends on the sampling frequency. The analyser holds a maximum of 2 litres of eluent, and each sample consumes 3.3 ml.
With a frequency of 6 samples per day, the reagent will last for 100 days – or over 3 months.