Residual Sulfite Monitor

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Product Description

Residual Sulfite MonitorResidual Sulfite Monitor Q46S/66

Application:

ATI’s Residual Sulfite Monitor Model Q46S/66 provides operators with a reliable tool for maintaining a small sulfite residual while reducing excess chemical consumption due to overfeed.

Dechlorination of wastewater effluent is common practice in many wastewater treatment facilities throughout the U.S. Strongly reducing sulfur compounds are used to eliminate chlorine residuals that might prove toxic to fish in the receiving stream. Because residual chlorine discharge limits are often very close to zero, monitoring residual values to comply with regulations has become very difficult, and controlling residuals at values between zero and 10 or 20 parts-per-billion is often not achievable. To meet stringent discharge limits, the sulfite or bisulfite used for dechlorination is added in slight excess, providing a small sulfite residual to insure complete dechlorination.

Features and Benefits:

  • Sulfite ion is measured selectively by conversion to sulfur dioxide.
  • Measurement is made without contact between sample and sensor, eliminating the potential for sensor fouling.
  • Power options include 115 or 230 VAC, 50/60 Hz.
  • Relays are programmable for setpoint, deadband, and time delay.
  • Internal sequencing and relay system for automated sample line cleaning.
  • Communication options for Profibus-DP, Modbus-RTU, or Ethernet-IP.

Residual Sulfite Monitor

 

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