April 2009Maintenance, Test & Measurement, Calibration
LTH Electronics has made spray wash cleaning adapters for its pH electrode systems to reduce maintenance and improve electrode life in applications where a pH or Redox electrode bulb is prone to coating. pH measurement of many industrial processes and waste streams can be difficult to measure reliably over extended time periods without some form of maintenance.
The adapters provide an effective method of cleaning the electrodes in both in-line and dip applications. The spray wash fittings have a full coned spray nozzle, which is mounted under the pH or Redox electrode bulb with a cleaning solution of 4 litres per minute being applied at a pressure of 4 bar. The fittings can be supplied within an 18-litre isolating break tank with ball valve and a pump supplied in a wall mounting enclosure.
The break tank incorporates a simple ball float valve to comply with local bylaws and will isolate the spray wash system from the water supply. The electrically operated pump provides a suitable wash supply via a positive displacement three-chamber diaphragm system.
The pump incorporates a check valve to prevent reverse flow and will self prime up to a vertical height of 2,5 metres. A pressure switch will cut off the pump in an over pressure situation and a thermal cut out protects the pump motor. The pump is housed in a wall mounting polycarbonate enclosure with electrical connections for the pump power supply and the liquid connections are made via push-in tube connectors.
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