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1. PICTURE
 
 
 
2. FEATURE
 
The AQ655 is a cost effective modular system that keeps the level of nitrite based treatment within the desired parameters.
The system consists of a control module, which contains all the sensor electronics, dosing control and the data communication hardware and software. The dosing pump complete with suction assembly and low level alarm are also mounted on the frame which also allows space for two chemical treatment containers.

Installation is simple and can easily be carried out by ship?s staff. The dosing units are placed close to the most convenient point in each cooling water circuit to be treated, with only one chemical injection line and one measurement point to be installed

The control unit displays current reading.

Optionally, a data communication unit can be supplied for use with any suitable existing PC to provide continuous display of readings whilst pre-formatted management reports give a summary of average readings for any period requested.

When possible, AQ652 systems with 2 pumps and dual controller on one frame, can be implemented to save space.
Both AQ655 and AQ652 systems can be linked to other Aquanet systems.
 
Specifications
CONTROL MODULE The module comprises 2 cards.
One card contains a microprocessor, analogue to digital converter, non-volatile memory local LCD display and communications interface.
The microprocessor card is connected via a ribbon cable to a second card containing power supplies, isolation amplifiers and alarm relays, this function of this card is to power the remotely located probes and amplifiers.
All calibration values system timings and other constants are retained in the non volatile memory.

Dimensions (W) x (H) x (D) mm 760x 1200 x 300
 
  
DOSING MODULE
The dosing modules are supplied on a steel tubular frame ready for fixing against a bulkhead.

Dimensions
(W) x (H) x (D) mm 560 x 1200 x 330 (assembled c/w chemical drum)

Pumps
Diaphragm type
pulse pump.
1 litre/hr 16 bar max. Plexiglas/SS head.

 
  
Probes
The probe comprises a stainless steel sensor housed in Peek body and screwed into a bronze shaft. The probe includes a temperature compensation element. The entire assembly fits into a retractable probe housing allowing servicing and cleaning of the probe without closing down the line. These probes are designed to operate from 20?C to 150?C at 10 bar pressure.

Power requirements
220/240 Vac 50/60 Hz. 3A Max Humidity 0-95% RH non condensing

OPTIONS
Links to other AQUANET units
Links to AQUANET software