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Model 5500-series Clark Technology Membrane Dissolved Oxygen Sensor

(shown with optional washer head air blast cleaning assembly)

T Replaceable Membrane T Clark Cell Technology. T Versatile Mounting Hardware. Cartridge. GLI Model 5500-series dissolved The handrail and flotation Model 5500-series dissolved oxygen sensors use polarographic hardware assemblies feature a oxygen sensors feature a Clark Cell technology that unique stainless steel swivel/ replaceable cartridge, simplifying includes a three- system: pivot/pipe clamp assembly, the delicate and time-consuming gold , silver , and enabling easy sensor positioning task of installing a new silver reference . The and removal from the process. membrane. Each cartridge potentiostatic design operates by The flotation hardware has a ball assembly includes a pre-installed, polarizing the silver reference float assembly that continually semi-permeable membrane, electrode with a constant voltage bobs up and down to gently scrub , and electrodes. potential. This third electrode the sensor membrane. The provides a more constant submersion hardware enables T Rugged, Foul-resistant potential than the silver anode submerging the sensor to a Membrane. (used as reference in desired depth in the basin. All An extremely durable 50 micron conventional two-electrode hardware includes a NEMA 4X thick hydrophobic membrane systems) because it does not junction box with quick-disconnect ensures that the D.O. sensor conduct current flow necessary to receptacle for the metal plug on resists fouling and withstands the measure the dissolved oxygen. the sensor cable (termination option harsh environments found in The reference electrode gives the “A”). Flow-through union hardware wastewater treatment plants. GLI sensor greater accuracy and is also offered to quickly and stability due to better long-term easily remove and replace a T Automatic Self-cleaning polarization stability as the silver union-mount style sensor into a Accessories. anode and electrolyte age. process pipe. Self-contained air blast cleaning systems, complete with air T Complete Encapsulation. T Advanced Diagnostics. compressor, are offered for use Fully-encapsulated When used with GLI analyzers, with GLI analyzers to construction protects the the sensor will provide an alarm automatically clean the sensor sensor’s built-in electronics signal for a punctured membrane, membrane. A separate washer from moisture and humidity or depleted or contaminated head air blast assembly is also problems, extending the electrolyte. available. It requires an external working life of the sensor. source to provide pressurized air. DISSOLVED OXYGEN DISSOLVED Specifications

Wetted Materials ...... Noryl® and 316 stainless steel body, PVC mounting adapter, Viton® O-rings, Teflon® membrane, Noryl® and Ryton® cartridge assembly, and nylon cable grip/strain relief Electrode Materials ...... Gold cathode, silver anode, and silver reference Temperature Range...... 32-122°F (0-50°C) Temperature Compensator...... NTC 30K ohm thermistor Minimum Flow Rate...... 0.016 feet (0.5 centimeters) per second Maximum Pressure...... 145 psi (10 bar) Measuring Range ...... 0.0-40.00 ppm Sensitivity ...... ± 0.05% of span Repeatability...... ± 0.5% of span Response Time (20°C)...... 130 seconds to 90% of value upon step change Membrane Thickness ...... 2 mil (50 microns) Sensor Cable (integral)...... 15 ft. (4.6 m) long cable, terminated with an MS-type quick-disconnect plug (metal or plastic) Measuring Principle...... Three-electrode polarographic Clark Cell technology

Noryl® is a registered trademark of General Electric Co. Viton® and Teflon® are registered trademarks of E.I. Du Pont de Nemours + Co. Ryton® is a registered trademark of Phillips 66 Co.

Ordering Information

Membrane D.O. Sensors

MODEL NUMBER (Notes 1 and 2) 55 GLI membrane D.O. sensor with polarographic Clark Cell and integral 15 foot (4.6 m) long cable. MOUNTING STYLE 4 Submersion (for use with optional GLI mounting hardware) 5 Union-mount (flanged for use with a special GLI 2-inch “Y” tee) RESERVED CATEGORIES TERMINATION FOR INTEGRAL SENSOR CABLE A Metal M.S. style plug (only mates with GLI hardware junction box receptacle) C Plastic M.S. style plug (only mates with GLI D53 analyzer receptacle)

55 0D0 Product Number Choose one from each category.

NOTES: 1. Each sensor includes a replaceable cartridge (with a factory-installed, semi-permeable membrane), protector, and 12 disposable calibration bags for highly accurate “Saturation Method” air calibration.

2. To order a sensor with a non-standard cable length, please specify the sensor model number and add the suffix “0A” followed by the required length of cable in whole feet. Example: 5540D0A0A25 for sensor with 25 foot cable.

Sensor Mounting Hardware

T Handrail Mounting Hardware (non-float type) but also includes a ball float assembly, and a 45°-angled MH276H00F PVC coupling to connect the float assembly to the pipe. Hardware consists of a 1-1/2 inch diameter by 7.5 foot T Flotation Extension Pipe 76A9902 (2.3 m) long PVC pipe, a unique swivel/ pivot/pipe clamp assembly, and a surface-mount NEMA 4X junction box This pipe is only for use with the MH276J00F flotation with quick-disconnect receptacle for sensor with metal mounting hardware. It extends the membrane end of the plug on cable end. sensor to 1 foot (0.3 m) below the ball float for applications where greater submersion depth is desired. T Flotation Mounting Hardware MH276J00F This hardware is the same as MH276H00F listed above Ordering Information (continued)

Sensor Mounting Hardware (continued)

T Submersion Mounting Hardware MH276R00F T Junction Box-to-Instrument Interconnect Cable 1W1100 Hardware consists of a 1-1/2 inch diameter by 5 foot (1.5 This 6-conductor (plus shield) cable is required for use m) long PVC pipe, and a surface-mount NEMA 4X with all GLI membrane D.O. sensor mounting hardware to junction box with quick-disconnect receptacle for sensor connect the hardware junction box to the measuring with metal plug on cable end. instrument. Specify cable length in whole feet. T Flow-through Union Hardware MH378W4PZ T NEMA 4X Junction Box 76A4000-001 This hardware is only for use with a union mount style This waterproof, surface mount junction box is for use with sensor. It consists of a PVC 2-inch “Y” tee with socket- MH378W4PZ flow-through union hardware. Its quick- weld connections, and a 2-inch union. (If required, a disconnect receptacle mates with the sensor cable NEMA 4X junction box 76A4000-001 can be ordered.) terminated with a metal plug (termination option “A”).

Sensor Spare Parts/Accessories

T Replacement Cartridge 5500A1020-001 T Self-contained Air Blast Cleaning Systems: All cartridges include a pre-installed, semi-permeable 276C3M1220-115 (for 115 VAC operation) membrane, electrolyte, electrodes, and O-ring. 276C3M1220-230 (for 230 VAC operation) System provides pressurized air to clean the membrane of T Replacement O-ring 5H0675 for Cartridge the sensor. System includes washer head with 25 ft. (7.6 For all GLI membrane cartridges, this O-ring provides a m) long tubing for air delivery, quick-disconnect tube seal between the sensor body and the cartridge. fitting, and a compressor housed in NEMA 4X enclosure.

T Spare Calibration Bags 276M1210 T Washer Head Air Blast Cleaning Assembly 276G1230 A package of 12 disposable bags for only “Saturation Consists of washer head with 25 ft. (7.6 m) long tubing for Method” air calibration. These bags provide a stable air delivery, and quick-disconnect tube fitting. Compressor atmosphere around the membrane for highly accurate and enclosure are not included. calibration. NOTE: The washer head assembly requires an external source of pressurized air.

Engineering Specification

1. The sensor shall use three-electrode “Saturation Method” air calibrations. These diameter by 7.5 ft. (2.3 m) long PVC polarographic Clark Cell technology special bags shall provide a stable pipe, PVC angle coupling for sensor, consisting of a silver reference electrode, atmosphere around the sensor membrane ball float, swivel/pivot/pipe clamp silver anode electrode, and a gold cathode for highly accurate calibration. assembly, and surface-mount NEMA electrode. 4X junction box with quick-disconnect 6. The sensor shall be GLI International, Inc. receptacle for sensor with metal plug 2. The electrodes shall be in a replaceable Model 5500-series. on its cable. cartridge filled with electrolyte and covered Optional: by a pre-installed, 50 micron thick gas c) Submersion Mounting Hardware permeable membrane. The membrane 7. Hardware to mount the sensor shall be: MH276R00F consisting of a 1-1/2 inch ® shall be constructed of Teflon . a) Handrail Mounting Hardware diameter by 5 ft. (1.5 m) long PVC pipe, and surface-mount NEMA 4X 3. The sensor shall automatically compensate MH276H00F consisting of a 1-1/2 inch junction box with quick-disconnect for changes in process temperature. diameter by 7.5 ft. (2.3 m) long PVC pipe, PVC straight coupling for sensor, receptacle for sensor with metal plug 4. The sensor shall have an integral 15 ft. swivel/pivot/pipe clamp assembly, and on its cable. (4.6 m) long cable terminated with an MS- surface-mount NEMA 4X junction box d) Flow-through Union Hardware type quick-disconnect plug (metal or with quick-disconnect receptacle for MH378W4PZ consisting of a PVC plastic). sensor with metal plug on its cable. 2-inch “Y” tee with socket-weld 5. The sensor shall be provided with a dozen b) Flotation Mounting Hardware connections, and a 2-inch union. disposable calibration bags to perform MH276J00F consisting of a 1-1/2 inch Dimensions Inches (mm) Handrail and Flotation Mounting Hardware

Flow-through Union Mounting Hardware Submersion Mounting Hardware

276G1230 Washer Head Air Blast Cleaning Assembly

Data Sheet 5500