AQ301 Industrial Steam Boiler Water Dosing and Management


Features and Benefits



              Keeps Boilers scale and corrosion free

              Ensures correct chemical levels at all times

              Reduced man hours in system operation and tests

              Easily reconfigured for new chemical suppliers

              GSM interface allows selectable alarms to be
              sent to an engineer or control room telephone

This unit is specially designed to suit automated water quality management for industrial Boilers up to 15 bar at an affordable price. The AQ301 system can be manufactured for a single product chemical regime, with one injection pump, or for a 2 product regime with (max) two pumps. The unit further comprises pH, conductivity, feed temperature probes and mechanical flowmeter. It comes with a local LCD display to display water parameters. Probes are easily calibrated from the front panel and a low product level alarm is provided for the chemical drums. The unit is stand-alone but can be expanded to full remote monitoring, data logging and display with AQUANET software and PC. This unit accepts only a single boiler water sample. For dual Boilers and/or a feed sample, an AQ300 unit is required.




Specifications Description
The equipment is supplied as a separate
instrumentation cabinet and pump rack.
The instrumentation cabinet is
stainless steel with hinged lockable doors.
The left hand section holds the
integral sample cooler and probes.
The right hand section houses the electronics
manual controls and communication interface.


Dimensions
(W)x(H)x(D) mm
Cabinet 740 x 450 x 150
Drum Frame - 760 x 1000 x 340
Weight - 35 kg


Colour RAL 7-001 (dark grey) Rating - IP66


Power requirements
220/240 Vac 50/60 Hz. 6A


Max. Operating Temperature 50?C max.


Humidity 0-95% RH non condensing

Probes

pH
Range 0 ? 14pH
Sealed Reference cell
Resolution 0.5% FSD


Conductivity
Range 0-6000uMhos (other ranges available)
Automatic temperature compensation
Resolution 0.5% FSD


Dissolved Oxygen (OPTION)
Range 0 ? 2.5 mg/litre
Automatic temperature compensation
Resolution 0.5% FSD


Feed Temperature
Stainless steel pocketed probe
0-110?C scaled as 4-20 mA signal

Mechanical Flow Meters
Flanged DN25 to DN80
PN16
Maximum Temp 130?C
OR
Ultrasonic Flow Meters
(Non penetrating. ,
Clamps onto outside of existing pipe work).


Blowdown
Through the unit on smaller Boilers or
via blowdown valves (optional)


Dosing Pumps
Diaphragm Pulse
1 litre/hr 17 bar max, polypropylene head.
Teflon coated diaphrahm.


GSM Interface(OPTION)
Allows selectable alarms to be sent to an
engineers or control room telephone.


Communications and Monitoring (OPTION)
AQUANET software
compatibility for monitoring, logging
and display. RS422 differential
line drivers CRC protected

Description of Operation The boiler sample and cooling water supply are activated for 5 minutes at a pre-programmed periodicity of 10 minutes to 42 hours.
The samples analysed and the information processed by the electronics, followed by a small upward or downward adjustment of the relevant chemical pumps.
The boiler water conductivity controls the optional auto surface blowdown valve, maintaining the conductivity to pre-programmed levels.
This accurately maintains the water at the ideal density for maximum chemical performance with minimum chemical and water wastage.


Special Features Probe calibration easy and quick at unit.
Probe construction designed for easy mounting and removal.
Extra pump speed control facility at unit.
Water sample temperature display, with probe protection cut-out.
Fuse failure alarms.
Pumps have special venting arrangements, returning the vented chemical to the drum.