ProAm Ammonia Monitor
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Description of the ProAm Ammonia Monitor
The ProAm Ammonia Monitor is a simple, compact on-line analyser designed currently to accurately determine ammoniacal-nitrogen in real-time. Other parameters which include Nitrate, Chloride and Fluoride may also be configured.
The instrument comprises a wall-mount analyser section with an integral sample pump; a controlling processor interfaced by a membrane keyboard and back lit LCD. Electrical connections for power supply and signals are externally made from a separate IP65 enclosure which is typically installed adjacent to the analyser section
ProAm Key Features
Low cost, single stream analyser with automatic calibration/clean routines
Principle of Operation
The ProAm analyser uses an ammonia gas sensing ISE to report ammoniacal-nitrogen. Sample is delivered through large diameter tubing to a reaction vessel where a caustic / edta reagent is continuously added. The pH is elevated to liberate free-ammonia which is measured by the ion selective electrode (ISE).
The sample is also temperature regulated / compensated and sparged with air to promote chemical mixing. The integral peristaltic sample pump can deliver sample directly from source or from a fast sample loop. A series of pinch valves are configured to control the passage of sample, calibration and cleaning fluids without introducing points of blockage thus improving reliability.
Control & Monitoring Options
Various options are available offering different levels of automation and communication. As standard, the instrument is supplied with an analogue output with its range determined by the selected calibration values. Four change-over contact relays (volt-free) are also available; two may be configured as limit alarms and two may be programmed to indicate various fault conditions. Alternatively, data may be transmitted to telemetry using Profibus or Modbus (other protocols are available on request). The instrument may be configured for continuous or intermittent analysis and controlled remotely using the BUS system.
Pre-installation into Compact Secondary Enclosure
The Proam may be supplied in a compact GRP enclosure suitable for outside installation complete with frost protection. All the components are pre-installed to simplify site installation.
Typical Specifications
| Measuring Range: | 0-1.00 to 500 PPM FSD (10,000 with dilution option) |
| Repeatability: | +/- 2% or better NH4-N |
| Enclosure: | GRP to IP54 protection |
| Dimensions: | Analyser 420(h) x 370(w) x 220(d) mm Terminal Box 182(h) x 275(w) x 180(d) mm |
| Outputs: | Analogue 4-20mA standard |
| 2 x process limit & 2 x utility alarms | |
| Power supply: | 110/230VAC 50/60Hz |
| Weight: | 30 Kg |
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Proam Ammonia Monitor
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