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TDS Controller for Steam Raising Plant to 5000kg/hr

     

Download PDF specifications here

DESCRIPTION
At a pre-determined interval the controller pulses its scum line blow down valve and measures the temperature and conductivity of the discharged boiler water.

If the conductivity is above the pre-set limit it will pulse the valve open and closed for a few seconds at a time until the conductivity (and hence TDS) falls to within limits, after which it waits for a predetermined time until the cycle starts again.

The primary functions are: -

  • Surface blow down control
  • Optional timed bottom blow down
  • Pulsed output control for steam valve

The bottom blow down valve and the steam header valve inputs have provision for micro-switch feedback which indicate to the controller the success or failure of the valve opening.

The front panel houses

  • LCD display
  • Status LEDs
  • Alarm / Fault LEDs
  • When a valve fails the alarm LED is illuminated.
     
 

SPECIFICATIONS

Input power
110/220VAC 50/60Hz

Power requirement 50 watts

Alarm relay contacts
220Vac @ 1 Amp

Probe energisation
200mV volts

Standard range 0-6000 uMhos
(other ranges available)

Temperature  compensation range
0 to 200?C

 

  

CONTROLS

  • Conductivity Set point
  • Surface blowdown On Time in seconds
  • Surface blowdown Off time in minutes
  • Bottom blowdown Period (in minutes)
  • Bottom blowdown On time (Max)
  • Steam header Valve POP ON time in seconds
  • Steam header Valve POP OFF time in seconds
  • Alarm band in uMhos



Amplifier Enclosure  Material Steel
Rating IP 65
Dimensions 300 x 200 x 120mm