ProAm 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
Low cost, single stream analyser with automatic calibration/clean routines
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. |
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.
Measuring Range: |
0-1 up to 500 PPM (without dilution)
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Repeatability: |
+/- 2% or better
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Enclosure: |
GRP to IP65 protection
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Analyser Dimensions: |
410 (h) x 370 (w) x 230 (d) mm
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Weight: |
16 Kg
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Signals Box Dimensions: |
275 (w) x 185 (h) x 180 (d) mm
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Outputs: |
Analogue 0/4-20mA standard
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Alarms:
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2 process limit & 2 utility alarms
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Power supply: | 100 – 240 VAC 50/60Hz
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