The Kowa Nitrate Monitor
Installation Details

General Arrangements

The equipment consists of a single wall-mounting housing (Dimensions 600 X 610 X 415 mm (Width, Height, Depth)), two 5 litre polyethylene containers and wall-mounting shelf to take the two 5 litre containers.

The wall-mounting housing is made up of a section which is attached to the wall, a hinged middle section and a glazed door which is fitted with 4 mm security glass. the wall- and hinged-sections are made of 1.5 mm sheet steel, and the door of extruded aluminium. The housing is electrophoretically primed and finished in textured stove-enamelling. The colour of the door frame is RAL 7033 and the enclosure is RAL 7032

Gross weight

Instrument 47.5 kg

5 litre containers 5.4 kg each

Preservation and site storage procedures

The instrument can be stored indefinitely in its original packaging at temperatures in the range 5 to 45 °C and at a relative humidity in the range 5 to 95% non-condensing.

Operating fluid and material consumption

The quantities of distilled water and 12% hydrochloric acid consumed is dependant on settings which are customer programmable. When correctly adjusted, distilled water is used at the rate of 125 ml per day (5 litres lasts 40 days) and 12% hydrochloric acid at the rate of 35 ml per day (5 litres lasts 142 days).

Supply Voltage

Instruments are available to run on either 110 Volts 50 Hz or 240 Volts 50 Hz. single phase. This must be specified when ordering.

Water Pressure and quality

The pressure of the sample water must be in the range 0.05 to 4 Bar. It is recommended that a pre-filter be used with surface waters - a 10 inch 50 micron cartridge filter is generally adequate.

Mechanical Considerations

The wall on which the instrument is to be mounted must be capable of supporting the 50 kg (1 cwt) weight of the instrument plus any additional forces applied. For example when the door and middle section are open and they are leaned on.

Drill and plug four 12 mm diameter holes as shown in the diagram.
The instrument is attached using four 60 mm long, 8 mm diameter galvanised, hexagonal headed wood screws.
The distance "X" less 75 mm is the height of the display when the instrument is attached to the wall.

View of the housing from above, showing dimensions when closed and when open.

Electrical Connections

Mains Connections

Signal Connections

Tube connections

The plastic tubing which is attached to the connectors (on the left side of the middle section of the housing), must be able to withstand the 12% hydrochloric acid. Some suitable materials are polyethylene, Polytetrafluoroethylene (PTFE), or silicon rubber. Dimensions: outside diameter 6 mm, inside diameter 4 mm.

View of the lower left side of the nitrate monitor, showing the relative positions of the tube connections.

Top of Page