Neutrasystem 2™ PH Monitoring System

pH Monitoring, Recording, and Alarm System

  • Reliability
  • Submersible electrode (sensor)
  • Cost-effectiveness

Neutrasystem 2 ensures that discharges into the sewer are maintained within acceptable pH parameters by neutralizing the acidic waste with limestone chips.



Neutrasystem 2 ensures that discharges into the sewer are maintained within acceptable pH parameters by neutralizing the acidic waste with limestone chips. The system continuously samples the downstream flow while keeping an accurate, permanent record of pH discharge levels (optional). The monitoring device will warn maintenance personnel, (visually and audibly), when pH discharges outside acceptable parameters are sensed. Once alerted, maintenance personnel can quickly and easily recharge the main IPEX Neutratank with limestone chips through the access cover incorporated into the tank’s design.

The system incorporates the following features:

  • UL 508 Listed, NEMA 4X enclosure with hinged front, padlockable hasps, and wall mount flange
  • 110/120 VAC input power supply (1.2flA) with 2 amp fuse with blown fuse indicator and resettable GFCI.
  • Key lock off-on switch on door.
  • Control power has 2 amp fuse with blown fuse indicator (24VDC class 2).
  • Intermittent alarm horn, (sonalert type), and alarm silencing switch. The alarm horn is activated when the probe senses a pH above or below the set parameters, and will remain on until the alarm silencing switch is activated.
  • Ethernet output for pH level and alarm in current time. (optional)
  • Data logger to record pH values with date and time (optional)
  • Large 4 digit pH value display with operator buttons for alarm settings
    (High pH value, Low pH value to energize the alarm)
  • “Power ON” white LED pilot light.
  • “pH HIGH Alarm” LED red light/ button to press to acknowledge.
  • “pH LOW Alarm” LED red light/ button to press to acknowledge.
  • Series 6510 submersible, pH electrode with chemically resistant CPVC body, viton O-rings and twist- lock connection providing easy maintenance
  • 5-gallon high density polyethylene, one-piece construction, rotationally molded sample tank.

IPEX NEUTRASYSTEM 2 uses a CPVC submersible electrode (sensor) with automatic temperature compensation. The sensor has a flat surface junction to minimize fouling. The reference is sealed to minimize dryout and eliminate refilling solution. The sensor is connected to a preamplifier via a 1/4 turn quick disconnect. The preamplifier has an attached cable (25’) and comes preattached to the pH calibrator that can be mounted near the tank (wall mount plate attached; other mounting options available with included hardware: pipe mount, DIN rail mount, panel mount).    

Neutralization Tank Sizing And Maintenance

The size of the neutralization tank is a function of the number of sinks and drains that are discharged into the system. According to ASPE, tanks are sized to provide a minimum “dwell time” of 2-1/2 to 3 hours. Based on this dwell time, ASPE has developed a sizing table which is summarized and can be used as a guide in selecting the proper size tank. Tanks should not be sized based on the number of sinks or drains alone. Certain types of waste may require particular needs and may not fall within the standard sink to tank ratio. Other factors that can affect the tank size are not limited to, but inclusive of: the amount of flow through the system, the type of chemicals and the size of the system piping. A qualified engineer should make the final determination of the tank size.


Acid waste monitoring system shall be the Neutrasystem 2 pH Monitoring System as supplied by IPEX Industrial Systems, comprising of a UL 508-listed, NEMA 4X, electrical pH monitoring panel and a 5-gallon high density polyethylene, one piece construction, rotationally molded sampling tank. The control panel shall incorporate a sonalert soft internal alarm horn with silencing switch, pH HIGH and LOW LED red light alarms, and power ON white LED pilot light. The controller shall link, via preamplifier, to a Series 6510 submersible pH electrode encapsulated in a chemically resistant CPVC body with viton O-rings. The electrode shall have a flat sensing surface and the electrode body shall incorporate a twist lock connection to facilitate easy removal and replacement. The electrode shall have a response time of 5-10 seconds for pH changes. The 5 gallon pH sampling tank shall be installed downstream of a rotationally molded construction, high density polyethylene Neutratank with a flanged top, and combination bolt down and access cover. Connecting piping for the acid waste drainage and vent system shall be NSF-listed Schedule 40 polypropylene conforming to ASTM F1412 as manufactured by IPEX. Connecting fittings shall be NSF-listed, incorporating molded-in-place nickel chrome wire and joined using the Enfield Hand Held Control Unit, or all plastic construction mechanical joint fittings incorporating anti pull-out collars (olives) to ensure against accidental pipe-fitting separation during and after installation. Installation and testing of the Neutrasystem 2 shall be in accordance with the contract drawings, the manufacturer’s recommendations and the local plumbing codes.


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