ATI’s Model Q46S/81 Dissolved Sulphide Monitor provides an improved method for measuring sulphides in solution.

Sulphides can be found naturally in well water and can build up in wastewater collection systems due to anaerobic conditions frequently found there. In addition, sulphides are used in mercury removal processes and are frequently found in tanning wastes. In drinking water systems, sulphides cause taste and odour problems. In wastewater systems, sulphides cause damage to concrete structures in collection systems and contribute to odour problems in treatment facilities.

Measurement of dissolved sulphide concentrations has been done primarily using analysers employing ion selective electrodes (ISE) for sensing. While providing adequate sensitivity, ISE based systems require frequent zero and span adjustments to maintain measurement accuracy. Because of this, most ISE based monitoring systems are relatively expensive and require frequent service.

Key Facts

  • Sulphide Measurement. Sulphide ion is measured selectively by conversion to hydrogen sulfide.
  • Gas Phase Sensing. Measurement is made without contact between sample and sensor, eliminating the potential for sensor fouling.
  • Chemistry Module Power Options. Power options include 115 or 230 VAC, 50/60 Hz.
  • Three Control Relays.Relays are programmable for setpoint, deadband, and time delay.
  • Sample Line Cleaning. Internal sequencing and relay system for automated sample line cleaning.
  • Digital Communication. Communication options for Profibus-DP, Modbus-RTU, or Ethernet-IP.

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