Dissolved Oxygen Sensor

Transcription

1 Product Data Sheet PDS ADO/rev.G February 2011 Model 499ADO Dissolved Oxygen Sensor INSTALLS in aeration basins or sidestream samples. RUGGED CONSTRUCTION. EASILY REPLACEABLE MEMBRANE; no special tools required. AUTOMATIC COMPENSATION for changes in membrane permeability with temperature. AUTOMATIC PRESSURE EQUALIZATION maintains correct membrane tension. VARIOPOL CONNECTOR OPTION allows the sensor to be replaced without running new cable. FEATURES AND APPLICATIONS The Model 499ADO sensor is intended for the continuous determination of dissolved oxygen between 0-20 ppm. The primary application is aeration basins in municipal and industrial wastewater treatment plants. The Model 499ADO is a membrane-covered amperometric sensor. The sensor consists of a gas-permeable membrane stretched tightly over a gold cathode. A silver anode and an electrolyte solution complete the internal circuit. During operation, oxygen diffuses from the sample through the membrane to the cathode. A polarizing voltage applied to the cathode reduces the oxygen to hydroxide. The reaction produces a current, which the analyzer measures. The current is directly proportional to the rate at which oxygen reaches the cathode, which is ultimately proportional to the concentration of oxygen in the sample. Because the rate of diffusion of oxygen through the membrane depends on temperature, sensor response must be corrected for temperature changes. A Pt 100 RTD in the sensor measures the temperature, and the analyzer automatically performs the correction. Calibration is easy. Simply expose the sensor to water-saturated air and press a button on the analyzer. The analyzer measures the barometric pressure and calculates the equilibrium solubility of atmospheric oxygen at the prevailing temperature and pressure. (5081-A, and Xmt-A analyzers require the user to manually enter the barometric pressure.) Maintenance is fast and easy. Replacing the membrane requires no special tools or fixtures. Simply place a few drops of electrolyte solution in the membrane assembly, place it on the cathode, and screw the retainer in place. To replenish the electrolyte solution, unscrew the fill plug, add the reagent from a squeeze bottle, and replace the plug. Pressure changes have little influence on sensor response. A flexible bladder in the sensor prevents distortion of the membrane by keeping the pressure inside the sensor equal to the sample pressure. Several mounting configurations are possible. For aeration basins and tanks, use the handrail mounting. For measuring oxygen in pipes, use a sidestream sample and install the sensor in either the flow tee or the low flow cell. The Model 499ADO sensor is available with a Variopol (VP) watertight connector. Wire the interconnecting cable to the analyzer and run the cable to the sensor. The sensor plugs into the cable receptacle. To replace the sensor, simply disconnect the Variopol fitting and plug in a new sensor.

2 SENSOR SPECIFICATIONS Range: 0 to 20 ppm (mg/l) as O 2. For measurements at the ppb level choose Model 499A TrDO. Wetted Parts: Noryl 1, Viton 2, EPDM, Teflon 3, (TFE) silicone Cathode: gold (not normally wetted) Accuracy: ±0.2 ppm at 25 C Repeatability: ±0.05 ppm at 25 C Response time: 25 sec to 63% of final reading at 25 C Pressure: 0 to 65 psig (0 to 549 kpa abs) Temperature: 32 to 122 F (0 to 50 C) Sample Flow: Flow through Open channel Low flow cell Agitation produced by bubbles in aeration basins usually provides adequate flow. Process Connection: 1 inch MNPT Electrolyte Volume: 25 ml (approx.) Electrolyte Life: 4 to 6 months (approx.) Cable Length (standard integral cable): 25 ft (7.6 m) Cable Length (maximum): 300 ft (91 m) Weight/Shipping Weight: 1 lb/3 lb (0.5 kg/1.5 kg) 1 Noryl is a registered trademark of General Electric. 2 Viton is a registered trademark of E.I. dupont de Nemours & Co. 3 Teflon is a registered trademark of E.I. dupont de Nemours & Co. OTHER SPECIFICATIONS 1-5 gpm (3.8 to 19 L/min) 1 ft/sec (0.3 m/sec) 2 to 5 gph (7.6 to 19 L/hr) LOW FLOW CELL PN Wetted Parts: polycarbonate, polyester, 316 stainless steel, silicone Process Connection: 1/4-inch OD tubing compression fitting or 1/4-inch FNPT Maximum Pressure: 90 psig (722 kpa abs) Maximum Temperature: 158 F ( 70 C) Note: The pressure and temperature specifications for the low flow cell exceed the pressure and temperature specifications for the sensor. FLOW-THROUGH TEE (1-1/2 inch body) PN Wetted Parts: CPVC and Buna N; body is schedule 80 CPVC Process Connection: 1-1/2 inch socket Maximum Pressure: 65 psig (549 kpa abs) Maximum Temperature: 122 F ( 50 C) FLOW-THROUGH TEE (2 inch body) PN , 04, 05 Wetted Parts: PVC and Buna N; body is schedule 80 PVC Process Connection: 3/4-inch NFPT, 1 inch NFPT, or 1-1/2 inch NFPT Maximum Pressure: 60 psig (515 kpa abs) Maximum Temperature: 120 F (49 C) SPRAY CLEANER PN Wetted Parts: PVC, polypropylene, 316 stainless steel Connection for Cleaning Fluid: compression fitting for 1/4-inch tubing VALVED ROTAMETER PN for use with Low Flow Cell Flow: 0.4 to 5 gph (1.5 to 19 L/hr) Wetted Parts: acrylic, 316 stainless steel, Viton Process Connection: 1/4-inch NFPT (316 SS) Maximum Pressure: 100 psig (858 kpa abs) Maximum Temperature: 150 F (65 C) RECOMMENDED ANALYZERS Use Model 499ADO with Models 1056, 56, 54eA, 5081-A, 1066, and Xmt-A. 2

3 MILLIMETER INCH MILLIMETER INCH Standard sensor with integral cable Sensor with Variopol connector. Length of assembled sensor is 9.3 in. (236 mm). INCH MILLIMETER MILLIMETER INCH Low flow cell (PN ) Flow-through tee (1-1/2 inch) (PN ) 3

4 MILLIMETER INCH MILLIMETER INCH Flow-through tee (2 inch) (PN , -04, -05) Handrail mounting assembly (PN ) Spray cleaner (PN ) 4

5 ORDERING INFORMATION The Model 499ADO sensor is intended for the determination of dissolved oxygen at the ppm level. The sensor can be immersed directly in aeration basins using the handrail mounting assembly, or the sensor can be mounted in a variety of flow cells. The sensor is available with either an integral cable or a VP6 quick disconnect fitting. Three replacement membrane assemblies, three o-rings and a 4-oz (125 ml) bottle of electrolyte solution are provided with each sensor. MODEL 499ADO DISSOLVED OXYGEN SENSOR CODE Required selection 54 For use with Model 1056, 56, 54eA, 5081-A, 1066, and Xmt-A analyzers CODE Optional selection 60 Optimum EMI/RFI cable (not available with -VP option) VP Sensor with Variopol 6 connector (interconnecting cable must be ordered separately) 499ADO -54 -VP EXAMPLE FOR FIRST TIME VARIOPOL INSTALLATIONS PART # DESCRIPTION Interconnecting cable, VP 6, 2.5 ft (0.8 m) Interconnecting cable, VP 6, 4 ft (1.2m) Interconnecting cable, VP 6, 10 ft (3.0 m) Interconnecting cable, VP 6, 15 ft (4.6 m) Interconnecting cable, VP 6, 20 ft (6.1 m) Interconnecting cable, VP 6, 25 ft (7.6 m) Interconnecting cable, VP 6, 30 ft (9.1 m) Interconnecting cable, VP 6, 50 ft (15.2 m) Interconnecting cable, VP 6, 100 ft (30.5 m) 5

6 ACCESSORIES PART # DESCRIPTION /2 in. flow through tee with 1-1/2 socket connections in. flow through tee with 1-in FNPT connections in. flow through tee with 1-in FNPT connections in. flow through tee with 1-1/2-in FNPT connections Low flow cell Rotameter: gph Sensor handrail mounting assembly: includes 10 ft (3.0 m) Schedule /2 in PVC pipe with sweep ell and all mounting hardware Spray cleaner Junction box, 12 terminals Extension cable for option -54, unterminated (specify length) Extension cable for optimum EMI/RFI cable, unterminated (specify length) Extension cable for optimum EMI/RFI cable, terminated (specify length) Stainless steel tag Dissolved oxygen membrane assembly: includes one membrane assembly and O-ring Dissolved oxygen membrane assembly: includes three membrane assemblies and three O-rings #1 Dissolved oxygen sensor fill solution, 4 oz (125 ml) 6

7 COMPATIBLE ANALYZERS AND TRANSMITTERS The Model 1056 Dual Input Analyzer offers the choice of single or dual sensor inputs in any combination of ph/orp, contacting or toroidal conductivity, chlorine, oxygen, or ozone. The analyzer features completely automatic air calibration for dissolved oxygen measurements. Simply expose the 499ADO sensor to water-saturated air and press a button. The analyzer measures the temperature and barometric pressure and automatically completes the calibration. The analyzer has two fully programmable analog outputs. Four fully programmable alarm relays are available as an option. The high contrast display shows measurement results in large, easy-toread digits, and the user can customize the display to show additional process variables or diagnostic information. Menu screens for programming are simple and intuitive. Plain language prompts (in seven user-selectable languages) guide the user through the procedures. The analyzer continuously monitors itself and the sensor for faults and alerts the user when it detects a problem. Basic troubleshooting assistance for faults and warnings is available at the touch of a button. HART and Profibus digital communications are also available. HART allows the user to communicate with the analyzer through AMS (Asset Management Solutions) from a host anywhere in the plant. The Model 5081-A Transmitter can be used with the 499ADO sensor to measure dissolved oxygen in a variety of applications, particularly where a robust, explosion-proof enclosure is needed. The dissolved oxygen reading is shown in large numerals in the top line of a two-line, seven-segment display. Local communication with the 5081-A is through a handheld infrared remote controller. Two digital communication protocols are also available: HART and Foundation Fieldbus. Digital communications allows the user to communicate with the transmitter through AMS (Asset Management Solutions) from a host anywhere in the plant. The Model 56 Dual Input Analyzer offers the choice of single or dual sensor inputs in any combination of ph/orp, contacting or toroidal conductivity, chlorine, oxygen, or ozone. The analyzer features completely automatic air calibration for dissolved oxygen measurements. Simply expose the sensor to water-saturated air and press a button. The analyzer measures the barometric pressure and temperature and automatically completes the calibration. The analyzer has four fully programmable analog outputs and four fully programmable alarm relays, including PID and TPC control. The high contrast, full color display shows measurement results in large, easy-to-read digits. Menu screens for programming and calibration are simply and intuitive. Information screens, offering detailed explanation of programming features and calibration methods as well as troubleshooting assistance, are available at the touch of a button. An event and data logger and a dual graphical display are also standard. HART and Profibus DP digital communication are optional. The Model Xmt-A Transmitter can be used with the 499ADO sensor to measure dissolved oxygen in a variety of applications, particularly in applications where loop power is needed. The Xmt-A has a two line display that can be configured to meet user requirements. Menu screens (in six languages) for configuring and calibrating are simple and intuitive. Two digital communication protocols are available: HART and Foundation Fieldbus. Digital communications allows the user to communicate with the transmitter through AMS (Asset Management Solutions) from a host anywhere in the plant. 7

8 The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE Specifications subject to change without notice. 8 Credit Cards for U.S. Purchases Only. Emerson Process Management 2400 Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2011

9 Product Data Sheet PDS AOZ/rev.G February 2011 Model 499AOZ Dissolved Ozone Sensor RUGGED CONSTRUCTION. EASILY REPLACEABLE MEMBRANE; no special tools required. AUTOMATIC COMPENSATION for changes in membrane permeability with temperature. AUTOMATIC PRESSURE EQUALIZATION maintains correct membrane tension. VARIOPOL CONNECTOR OPTION allows the sensor to be replaced without running new cable. FEATURES AND APPLICATIONS The Model 499AOZ sensor is intended for the continuous determination of dissolved ozone. The primary application is ozonation basins in municipal water filter plants. Ozone is also used as a disinfectant in bottling and food processing plants. The Model 499AOZ is a membrane-covered amperometric sensor. The sensor consists of a gas-permeable membrane stretched tightly over a gold cathode. A silver anode and an electrolyte solution complete the internal circuit. During operation, ozone diffuses from the sample through the membrane. Once inside the sensor, the ozone reacts with the electrolyte solution to form an intermediate compound. A polarizing voltage applied to the cathode completely reduces the intermediate. The reduction produces a current, which the analyzer measures. The current is directly proportional to the rate at which ozone diffuses through the membrane, which is ultimately proportional to the concentration of ozone in the sample. Because the rate of diffusion of ozone through the membrane depends on temperature, sensor response must be corrected for temperature changes. A Pt 100 RTD in the sensor measures the temperature, and the analyzer automatically performs the correction. Because ozone standards do not exist, the sensor must be calibrated against the results of a laboratory test run on a grab sample of the process liquid. Ozone solutions are unstable, so the sample must be tested immediately. Portable test kits are available from other manufacturers. Maintenance is fast and easy. Replacing the membrane requires no special tools or fixtures. Simply place a few drops of electrolyte solution in the membrane assembly, place it over the cathode, and screw the retainer in place. To replenish the electrolyte solution, unscrew the fill plug, add the reagent from a squeeze bottle, and replace the plug. Pressure changes have little influence on sensor response. A flexible bladder in the sensor prevents distortion of the membrane by keeping the pressure inside the sensor equal to the sample pressure. Several mounting configurations are possible. For most applications the low flow cell is recommended. The Model 499AOZ sensor is available with a Variopol (VP) watertight connector. Wire the interconnecting cable to the analyzer and run the cable to the sensor. The sensor plugs into the cable receptacle. To replace the sensor, simply disconnect the Variopol fitting and plug in a new sensor.

10 SENSOR SPECIFICATIONS Range: 0 to 3 ppm (mg/l) as O 3. Wetted Parts: Polysulfone, Viton 1, Teflon 2, silicone Cathode: gold (not normally wetted) Accuracy: Accuracy depends on the accuracy of the chemical test used to calibrate the sensor. Linearity: ±5% of reading or ±3 ppb (whichever is greater) at 25 C Repeatability: ±2% of reading at constant temperature Response time: 30 sec to 90% of final reading at 25 C Pressure: 0 to 65 psig (101 to 549 kpa abs) Temperature (Operating): 32 to 122 F (0 to 50 C) Membrane Permeability Correction: Defined between 41 and 95 F (5 and 35 F) Process Connection: 1 inch MNPT Electrolyte Volume: 25 ml (approx.) Electrolyte Life: 3 months (approx.); for best results, replace electrolyte monthly Cable Length (standard integral cable): 25 ft (7.6 m) Cable Length (maximum): 300 ft (91 m) Sample Flow: Flow through 1-5 gpm (3.8 to 19 L/min) Open channel 1 ft/sec (0.3 m/sec) Low flow cell 2 to 5 gph (7.6 to 19 L/hr) Weight/Shipping Weight: 1 lb/3 lb (0.5 kg/1.5 kg) Weight and shipping weight are rounded up to the nearest whole pound or 0.5kg. 1 Viton is a registered trademark of E.I. dupont de Nemours & Co. 2 Teflon is a registered trademark of E.I. dupont de Nemours & Co. FLOW-THROUGH TEE (2 in. body) PN /04/05 Wetted Parts: PVC and Buna N; body is schedule 80 PVC Process Connection: ¾ inch NFPT, 1 inch NFPT, or 1½ inch NFPT Maximum Pressure: 60 psig (515 kpa abs) Maximum Temperature: 120 F (49 C) VALVED ROTAMETER PN for use with Low Flow Cell Flow: 0.4 to 5 gph (1.5 to 19 L/hr) Wetted Parts: acrylic, 316 stainless steel, Viton Process Connection: ¼ inch NFPT (316 SS) Maximum Pressure: 100 psig (858 kpa abs) Maximum Temperature: 150 F (65 C) RECOMMENDED ANALYZERS Rosemount Analytical Models 1056, 56, 54eA, 5081-A, 1066, and Xmt-A. MILLIMETER INCH OTHER SPECIFICATIONS LOW FLOW CELL PN Wetted Parts: polycarbonate, polyester, 316 stainless steel, silicone Process Connection: 1/4-inch OD tubing compression fitting or 1/4-inch FNPT Maximum Pressure: 90 psig (722 kpa abs) Maximum Temperature: 158 F ( 70 C) Note: The temperature and pressure specifications for the low flow cell exceed the specifications for the sensor. FLOW-THROUGH TEE (1½ inch body) PN Wetted Parts: CPVC and Buna N; body is schedule 80 CPVC Process Connection: 1-½ inch socket Maximum Pressure: 65 psig (549 kpa abs) Maximum Temperature: 122 F ( 50 C) Standard sensor with integral cable 2 Rosemount Analytical

11 MILLIMETER INCH INCH MILLIMETER Sensor with Variopol connector. Length of assembled sensor is 9.3 in. (236 mm). Low flow cell (PN ) MILLIMETER INCH MILLIMETER INCH Flow-through tee (1-1/2 inch) (PN ) Flow-through tee (2 inch) (PN , -04, -05) Rosemount Analytical 3

12 ORDERING INFORMATION The Model 499AOZ sensor is intended for the determination of dissolved ozone in a variety of municipal and industrial applications. The sensor is generally intended for mounting in an off-line flow cell. The sensor is available with either an integral cable or a VP6 quick disconnect fitting. Three replacement membrane assemblies, three o-rings and a 4-oz (125 ml) bottle of electrolyte solution are provided with each sensor. MODEL 499AOZ DISSOLVED OXYGEN SENSOR CODE Required selection 54 For use with Model 1056, 56, 54eA, 5081-A, 1066, and Xmt-A analyzers CODE Optional selection 60 Optimum EMI/RFI cable (not available with -VP options) VP Sensor with Variopol 6 connector (interconnecting cable must be ordered separately) 499AOZ -54 -VP EXAMPLE FOR FIRST TIME VARIOPOL INSTALLATIONS PART # DESCRIPTION Interconnecting cable, VP 6, 2.5 ft (0.8 m) Interconnecting cable, VP 6, 4 ft (1.2m) Interconnecting cable, VP 6, 10 ft (3.0 m) Interconnecting cable, VP 6, 15 ft (4.6 m) Interconnecting cable, VP 6, 20 ft (6.1 m) PART # DESCRIPTION Interconnecting cable, VP 6, 25 ft (7.6 m) Interconnecting cable, VP 6, 30 ft (9.1 m) Interconnecting cable, VP 6, 50 ft (15.2 m) Interconnecting cable, VP 6, 100 ft (30.5 m) ACCESSORIES PART # DESCRIPTION ½ in. flow through tee with 1-½ socket connections in. flow through tee with ¾-in FNPT connections in. flow through tee with 1-in FNPT connections in. flow through tee with 1-½-in FNPT connections Low flow cell with ¼-in OD tubing compression fittings Rotameter: gph Junction box, 12 terminals Extension cable for option -54, unterminated (specify length) Extension cable for optimum EMI/RFI cable, unterminated (specify length) Extension cable for optimum EMI/RFI cable, terminated (specify length) Stainless steel tag Dissolved ozone membrane assembly: includes one membrane assembly and O-ring Dissolved ozone membrane assembly: includes three membrane assemblies and three O-rings #3 Dissolved ozone sensor fill solution, 4 oz (125 ml) The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE Specifications subject to change without notice. 8 Credit Cards for U.S. Purchases Only. Emerson Process Management 2400 Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2011

13 Product Data Sheet PDS ATrDO/rev.H January 2011 Model 499A TrDO Trace Dissolved Oxygen Sensor RUGGED CONSTRUCTION. EASILY REPLACEABLE MEMBRANE; no special tools required. AUTOMATIC COMPENSATION for changes in membrane permeability with temperature. AUTOMATIC PRESSURE EQUALIZATION maintains correct membrane tension. SELF-DEPLETING DESIGN means rapid consumption of internal oxygen. Comedown time following maintenance and calibration is fast. FEATURES AND APPLICATIONS The Model 499A TrDO sensor is intended for the determination of trace (ppb) levels of dissolved oxygen in steam power plants and high purity cooling water. The 499A TrDO is a membrane-covered amperometric sensor. The sensor consists of a gas-permeable TFE membrane stretched tightly over a gold cathode. A silver anode and an electrolyte solution complete the internal circuit. During operation, oxygen diffuses from the sample through the membrane to the cathode. A polarizing voltage applied to the cathode converts all the oxygen entering the sensor to hydroxide ions. The reaction produces a current, which the analyzer measures. The current is directly proportional to the rate at which oxygen reaches the cathode, which is ultimately proportional to the concentration of oxygen in the sample. Because the rate of diffusion of oxygen through the membrane depends on temperature, sensor response must be corrected for temperature changes. A Pt100 RTD in the sensor measures the temperature, and the analyzer automatically performs the correction. The analyzer also uses the temperature measurement during automatic air calibration. Calibration is easy. Simply expose the sensor to water-saturated air and press a button. The analyzer measures the barometric pressure and temperature and calculates the equilibrium solubility of atmospheric oxygen at the prevailing temperature and pressure. Maintenance is fast and easy. Replacing the membrane requires no special tools or fixtures. Simply place a few drops of electrolyte solution in the membrane assembly, place it on the cathode, and screw the retainer in place. To replenish the electrolyte solution, unscrew the fill plug, add the reagent from a squeeze bottle, and replace the plug. Pressure changes have little influence on sensor response. A flexible bladder in the sensor prevents distortion of the membrane by keeping the pressure inside the sensor equal to the sample pressure. Comedown time is rapid. An out-of-the-box 499A TrDO sensor is accurate at the 1 ppb level within five hours after being placed in service. Unlike competing sensors that use a separate oxygen-scavenging electrode, the 499A TrDO relies on a self-depleting design to reduce internal oxygen and achieve fast comedown. The result is a more robust, reliable sensor. The 499A TrDO sensor is available with a Variopol (VP) watertight connector. Wire the interconnecting cable to the analyzer and run the cable to the sensor. The sensor plugs into the cable receptacle. To replace the sensor, simply disconnect the Variopol fitting and plug in a new sensor. The sensor is intended for use with the low flow cell PN

14 SENSOR SPECIFICATIONS Pressure: 0 to 65 psig (101 to 549 kpa abs) Temperature: Operating: 5 to 45 C (41 to 113 F) Storage: 0 to 60 C (32 to 140 F) Wetted Materials: Noryl 2, Viton 3, Teflon 4 (TFE), silicone Cathode: gold (not normally wetted) Process Connection: 1 inch MNPT Electrolyte Volume: 25 ml (approx.) Electrolyte Life: 4 to 6 months (approx.) Sensor Life: 2 years (approx.) Temperature Sensor: Pt 100 RTD (Type B) Cable Length (standard integral cable): 25 ft (7.6 m) Cable Length (maximum): 300 ft (91 m) Range: 0.1 ppb to 20 ppm Accuracy at 25 C following air calibration: <20 ppb ±1 ppb >20 ppb ±5% of reading Drift: <4% over 60 days Sample Flow: gph ( ml/min.) recommended. Response changes less than 2% when flow is maintained in recommended range. At 0.8 gph (50 ml/min), sensor response is about 90% of value at 100 ml/min. Response Time at 25 C: <20 sec to 90% of final reading at 25 C (0 to 200 ppb oxygen) Comedown Time to 1 ppb: New sensor: <5 hours Following membrane change: <1 hour Following air calibration: <1 hour Shelf Life: 3 months. If the shelf life has been exceeded, the sensor can still be used. The comedown time will be longer. Weight/Shipping Weight: 1 lb/3 lb (0.5 kg/1.5 kg) 2 Noryl is a registered trademark of General Electric. 3 Viton is a registered trademark of E.I. dupont de Nemours & Co. 4 Teflon is a registered trademark of E.I. dupont de Nemours & Co FLOW CELL SPECIFICATIONS LOW FLOW CELL PN Wetted Parts: polycarbonate, polyester, 316 stainless steel, silicone Process Connection: 1/4-inch OD tubing compression fitting or 1/4-inch FNPT Maximum Pressure: 90 psig (722 kpa abs) Maximum Temperature: 158 F (70 C) Weight/Shipping Weight: 1 lb/2 lb (0.5 kg/1.0 kg) Note: The temperature and pressure specifications for the low flow cell exceed the specifications for the sensor. ANALYZER COMPATIBILITY Use the Model 499A TrDO with Models 1056, 56, 54eA, 5081-A, 1066, or Xmt-A. MILLIMETER INCH Sensor Dimensions (Integral Cable) Sensor Dimensions (Variopol) Length of assembled sensor is 9.3 in. (236 mm).

15 INCH MILLIMETER Low Flow Cell (PN ) ORDERING INFORMATION The Model 499A TrDO sensor is intended for the determination of dissolved oxygen at the ppb (part per billion) level. Three replacement membrane assemblies, three O-rings, and a 4-oz (125 ml) bottle of electrolyte solution are provided with each sensor. To reduce initial comedown time, the sensor is shipped with the membrane in contact with saturated sodium sulfite solution. The sensor should be used only with the low flow cell (PN ). MODEL 499A TrDO TRACE (ppb) DISSOLVED OXYGEN SENSOR CODE Required selection 54 For use with 1056, 56, 54eA, 5081-A, 1066, and Xmt-A analyzers CODE Optional selection 60 Optimum EMI/RFI Cable (not available with -VP option) CODE Optional selection VP Sensor with Variopol 6 fitting (interconnecting cable must be ordered separately) 70 Includes low flow cell (PN ) 499A TrDO VP EXAMPLE Rosemount Analytical 3

16 FOR FIRST TIME VARIOPOL INSTALLATIONS PART # DESCRIPTION Interconnecting cable, VP 6, 2.5 ft (0.8 m) Interconnecting cable, VP 6, 4 ft (1.2m) Interconnecting cable, VP 6, 10 ft (3.0 m) Interconnecting cable, VP 6, 15 ft (4.6 m) Interconnecting cable, VP 6, 20 ft (6.1 m) Interconnecting cable, VP 6, 25 ft (7.6 m) Interconnecting cable, VP 6, 30 ft (9.1 m) Interconnecting cable, VP 6, 50 ft (15.2 m) Interconnecting cable, VP 6, 100 ft (30.5 m) ACCESSORIES PART # DESCRIPTION Low flow cell Extension cable, standard, not terminated (specify length) Extension cable, optimum EMI/RFI, not terminated (specify length) Extension cable, optimum EMI/RFI, terminated (specify length) Junction box, 12 terminals Electrolyte fill plug O-ring, Viton Membrane retainer Trace dissolved oxygen membrane kit, includes one membrane assembly and one O-ring Trace dissolved oxygen membrane kit, includes three membrane assemblies and three O-rings #1 Dissolved oxygen sensor fill solution, 4 oz (125 ml) The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE Specifications subject to change without notice. 8 Credit Cards for U.S. Purchases Only. Emerson Process Management 2400 Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2011

17 Product Data Sheet PDS 71-Bx438/rev.B July 2004 Model Bx438 DISSOLVED OXYGEN SENSOR DESIGNED FOR CARBONATED BEVERAGES LONGER SENSOR LIFE LESS MAINTENANCE REQUIRED FAST RESPONSE MINIMAL FLOW SENSITIVITY LOWER TOTAL COST OF OWNERSHIP MINIMAL CO 2 OFFSETS The Model Bx438 sensor is designed to monitor trace levels of dissolved oxygen in beer and other carbonated beverages. The Bx438 sensor utilizes a robust membrane, which increases the life of the membrane. The sensor is designed to withstand significantly more clean in place (CIP) cycles than other dissolved oxygen sensors. Unique Design: Most dissolved oxygen sensors operate by reduction of oxygen at the surface of the cathode. If the cathode is in direct contact with the solution, then interference effects from other substances may lead to inaccurate readings. The Model Bx438 cathode is covered with a gas permeable membrane. The oxygen diffusing through the membrane is completely reduced at the cathode, and the current between anode and cathode is proportional to the oxygen content in the sample. The design for the membrane is the key to achieving high performance. The Model Bx438 uses a proprietary membrane material. This thick, steel-meshedreinforced, double layer membrane enables the sensor to withstand high pressures and temperatures while maintaining high diffusion rates, resulting in stable outputs and fast response times. Longer Sensor Life/Less Maintenance: Due to the unique design of the sensor, maintenance is rarely required. The special double membrane design is less sensitive to contamination from protein and other fouling agents. The electrode construction guarantees excellent stability even after numerous sterilization cycles. Competitive dissolved oxygen sensors require maintenance after as few as 3-5 cycles. The model Bx438 sensor lasts through as many as cycles. Minimal Flow Sensitivity: Model Bx438 membrane material and overall design ensure that the flow rate has minimal effect on the sensor's measurements. The unique design also experiences minimal drift in low flow environments. Zero Polarization Voltage: Many competitive amperometric dissolved oxygen sensors set the polarization voltage to -670 mv. This set point may lead to offset readings due to carbon dioxide effects at low oxygen concentrations. The Model Bx438 sensor uses a zero polarization voltage setpoint, which results in the most accurate dissolved oxygen readings. Total Cost of Ownership Comparison: Many competitive amperometric dissolved oxygen sensors require frequent maintenance, such as membrane replacement, cathode replacement, and electrolyte replenishment. The Model Bx438 sensor s robust design minimizes the maintenance needed for a stable dissolved oxygen measurement. The cost to maintain the Model Bx438 sensor will be approximately one-third the cost required to maintain competitive dissolved oxygen sensors.

18 ORDERING INFORMATION Model Bx438 sensor provides a stable signal even in the harshest conditions. The sensor is designed to operate in breweries and other beverage plants, and can withstand clean-in-place cycles. The Bx438 comes in two insertion lengths, and comes standard with a variopol connector head. It can be used with either an insertion mounting assembly or a retractable mounting assembly. MODEL Dissolved Oxygen Bx438 in Carbonated Beverages Sensor (12 mm Diameter) CODE DESCRIPTION mm mm PN VARIOPOL CABLE Cable, with VP 6.0 cable coaxial connection, 3 m (9.8 ft) Cable, with VP 6.0 cable coaxial connection, 5 m (16.4 ft) PN MOUNTING ACCESSORIES Insertion assembly, 70 mm insertion (use 120 mm sensor) Retractable assembly, 70 mm insertion (use 225 mm sensor) 99SQ4870 Flexifit 1 1/2" triclamp adapter Service kit for insertion mounting assembly Service kit for retractable mounting assembly degree weld in socket, G 1 1/4 in. thread, 44 mm PN SERVICING ACCESSORIES Service kit for sensors, including three membranes and o-rings ml electrolyte Polarization Module Model Bx438 Dissolved Oxygen Sensor The Retractable Mounting Assembly can be used with Model Bx438 to achieve insertion and removal of the sensor without shutting down the process. SPECIFICATIONS Temperature: -10 to100 Deg C (14 to 212 C) Maximum Pressure: 175 psig (12 bar) Wetted materials: Stainless steel, gold, silicone, EPDM (FDA approved) Process Connection: PG 13.5 thread Sensor Lengths: 120 mm or 225 mm Sensor output in air: 180 to 400 na Response time (Air to CO 2 ): T 98 < 60 Sec Temperature Compensation: 22K NTC Cable Connector: Variopol 6.0 Compatible Mounting Accessory: Insertion or Retractable Compatible Analyzers: 54eA, Xmt-A, 5081A Specifications subject to change without notice. Model Xmt Analyzer CHOICE OF INSTRUMENTS Model 5081 Transmitter Model 54e Analyzer Emerson Process Management Liquid Division 2400 Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2005

19 Product Data Sheet PDS 71-RDO April 2010 Model RDO RDO Optical Dissolved Oxygen Sensor and Analyzer SINGLE OR DUAL INPUT ANALYZER OXYGEN SENSOR uses the fluorescence quenching method ACCURATE READINGS: ±0.1 ppm between 0.0 and 8.0 ppm LOW MAINTENANCE: sensing cap requires only annual replacement APPLICATIONS The RDO sensor and analyzer is intended for the determination of dissolved oxygen in water. It is ideal for use in wastewater aeration basins and ponds. The sensor uses the fluorescence quenching method. Unlike polarographic oxygen sensors, the RDO sensor does not require a flowing sample. It is also less affected by fouling than polarographic sensors. FEATURES The RDO sensor is available with either integral or quickdisconnect cable. The maximum cable length is 4000 ft (1219 m). A 1-¼ in FNPT fitting at the rear of the sensor allows a threaded pipe to be screwed into the sensor so it can be submerged in tanks or basins. Calibration is simple. The sensor can be calibrated either against a referee instrument or in water-saturated air. Air calibration is completely automatic. A barometric pressure sensor inside the analyzer measures the air pressure, and a thermistor in the sensor measures temperature. The analyzer automatically calculates the equilibrium solubility of atmospheric oxygen in water under the prevailing temperature and pressure. A manually-entered correction for salinity is also available. Maintenance is fast and easy and consists primarily of replacing the sensing cap every year. No special tools are required. The analyzer accepts one or two sensors. It has a two line display, which can be customized to display mg/l (ppm) oxygen, % saturation, oxygen partial pressure, or temperature for either sensor. The display can also be configured to display the current barometric pressure. The analyzer has two loop-powered 4-20 ma analog outputs assignable to either sensor and to any measurement (concentration, temperature, or partial pressure). Modbus/ RS485 serial communication is also available through the analyzer or direct from the sensor. Two high voltage and two low voltage alarm relays are standard. The alarms are assignable to any measurement and can be programmed for high/low logic, setpoint, and deadband. THEORY The RDO sensor uses fluorescence quenching to measure dissolved oxygen. Fluorescence is an optical property of certain molecules. When a molecule absorbs light, its energy increases, and the molecule is said to be excited. Because RDO is a registered trademark of In-Situ Inc. All rights reserved.

20 the excited molecule is unstable, it quickly loses the absorbed energy typically as heat or light. If the latter occurs, the emitted light, called fluorescence, is always of lower energy (longer wavelength) than the absorbed light. (Some of the absorbed light is lost as heat.) An excited molecule can also lose energy by colliding with another molecule, notably oxygen. Because a collision with oxygen provides a path out of the excited state that does not emit light, oxygen reduces the intensity of (or quenches) the fluorescence. The greater the concentration of oxygen, the greater is the reduction in fluorescence intensity. Quenching also reduces the fluorescence lifetime. If no oxygen is present, fluorescence will persist for a certain amount of time after the exciting light is shut off. If oxygen is present, the lifetime decreases because quenching provides an additional path out of the excited state, leaving fewer molecules to fluoresce. Unlike intensity measurements, lifetime measurements do not depend on the intensity of the exciting light, and, thus, are less subject to drift. The fluorescence lifetime can be conveniently measured by modulating the exciting light, which causes the emitted light to be modulated at the same frequency, but shifted in phase. The amount of phase shift is a measure of the fluorescence lifetime and the oxygen concentration. The RDO sensor consists of a sensing foil impregnated with the fluorescent material and covered with an opaque film to keep out sunlight. Oxygen from the sample diffuses into the sensing foil. Inside the sensor, light from a blue LED falls on the foil. The fluorescent molecules absorb the blue light and re-emit it as red light. A photodiode measures the red light. A red filter in front of the photodiode blocks any scattered blue light and allows only the red fluorescence to reach the detector. Circuitry inside the sensor modulates the exciting light and measures the phase shift between the exciting light and the fluorescence. The microprocessor converts the phase shift into fluorescence lifetime and calculates the concentration of oxygen in the sample. The result is sent as digital signal to the analyzer, which displays the oxygen concentration. Fluorescence quenching by oxygen is strongly dependent on temperature. A thermistor inside the RDO sensor measures the temperature, and the microprocessor applies an empirical correction factor. SPECIFICATIONS RDO SENSOR Wetted Materials: Delrin 1, ABS, Viton 2, titanium, polycarbonate/poly(methyl methacrylate) blend Dimensions: length 8.0 in (203 mm) diameter 1.9 in (47 mm) Rating: IP-67 with cap off; IP-68 with cap installed Process connection: 1-1/4 inch FNPT Integral cable length: 32 ft (10 m) Maximum cable length (quick disconnect cable only): 4000 ft (1219 m) Pressure: up to 314 psig (2060 kpa abs) Temperature: 32 to 122 F (0-50 C) Range: 0 to 20 ppm (mg/l) or 0 to 200% saturation Accuracy: ±0.1 ppm between 0 and 8 ppm; ±0.2 ppm between 8 and 20 ppm Resolution: 0.01 ppm (mg/l) Digital output: Modbus/RS485 Response time: 30 sec to 90% of final value; 37 sec to 95% of final value (at 25 C) Operating life of sensing cap: 1 year from first reading Shelf life of sensing cap: 2 years from date of manufacture; for full operating life install the sensing cap within one year of manufacture date. Safety directive: 73/23/EEC EU directives: 2004/108/EC for Electromagnetic Compatibility (EMC) and 72/23/EEC for Safety Immunity: EN , Electromagnetic Compatibility (EMC) part 6-2 Emissions: Class A requirements of CISPR 11:2004 SPECIFICATIONS RDO ANALYZER Enclosure: Polycarbonate, rated NEMA 4X, IP67 Dimensions (W x H x D): 6.3 x 6.3 x 3.6 in (16 x 16 x 9.0 cm) Display: liquid crystal; character height 0.4 in (6 mm) Mounting: suitable for pipe or wall mounting Conduit openings: six; PG 13.5 ( 1 2 inch); three gland fittings and five plugs ship with the analyzer Ambient temperature and humidity: -4 to 158 F (-20 to 70 C); 95% RH (non-condensing) Power: 100 to 240 VAC, approximately 0.15 A, Hz Analog Outputs: two fully scalable 4-20 ma outputs, each loop-powered (9-36 VDC) Digital Output: Modbus/RS485 Relays: two low voltage relays, <50 VAC or VDC, maximum current 2 A (resistive or inductive) two high voltage relays, 264 VAC max, maximum current 5 A (resistive or inductive) Barometric pressure range: 8.86 to in Hg (300 to 1000 mbar) Barometric pressure accuracy: ±0.09 in Hg (±3 mbar) EU directive: 2004/108/EC for Electromagnetic Compatibility (EMC) Immunity: EN , Electromagnetic Compatibility (EMC) part 6-2 Emissions: EN Electromagnetic Compatibility; includes IEC/EN and IEC/EN , where applicable Safety: UL and CAN/CSA C22.2 # Delrin is a registered trademark of DuPont DeNemours, LLC 2 Viton is a registered trademark of DuPont Dow Elastomers, LLC 2

21 FIGURE 1-2. Analyzer side view FIGURE 1-1. Analyzer dimensions with lid closed ORDERING INFORMATION The basic system consists of one or two sensors, the analyzer, and mounting hardware. All items must be ordered separately. See the tables below. A calibration cup to facilitate air calibration is included with the sensor. The sensor is available with 32 ft (10 m) of integral cable. If longer cable is needed, order the sensor with twist-lock connector and the desired cable length. For cable lengths longer than 96 ft (30 m) call the factory. FIGURE 1-3. Sensor side view ANALYZER Part number Description Weight* Shipping weight* R RDO analyzer, AC power, no data logging 3 lb (1.5 kg) 4 lb (2.0 kg) (includes three cable gland fittings and five plugs) SENSORS Part number Description Weight* Shipping weight* R RDO sensor with 32 ft (10 m) integral cable 2 lb (1.0 kg) 3 lb (1.5 kg) R RDO sensor with twist lock connector for use 1 lb (0.5 kg) 2 lb (1.0 kg) with twist-lock connector cable (see Accessories) ACCESSORIES Part number Description Weight* Shipping weight* R RDO analyzer pipe and wall mounting kit 1 lb (0.5 kg) 2 lb (1.0 kg) R00CBL10 Twist-lock connector cable, 32 ft (10m) 2 lb (1.0 kg) 3 lb (1.5 kg) R00CBL20 Twist-lock connector cable, 64 ft (20m) 3 lb (1.5 kg) 4 lb (2.0 kg) R00CBL30 Twist-lock connector cable, 96 ft (30m) 4 lb (2.0 kg) 5 lb (2.5 kg) R RDO sensor cap replacement kit 1 lb (0.5 kg) 1 lb (0.5 kg) R RDO O-ring replacement kit 1 lb (0.5 kg) 1 lb (0.5 kg) R RDO replacement nose cone kit 1 lb (0.5 kg) 1 lb (0.5 kg) R RDO replacement calibration cup 1 lb (0.5 kg) 1 lb (0.5 kg) R Replacement desiccant bag for analyzer 1 lb (0.5 kg) 1 lb (0.5 kg) * Weights and shipping weights are rounded up to the nearest 1 lb (0.5 kg). 3

22 The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE Specifications subject to change without notice. 8 Credit Cards for U.S. Purchases Only. Emerson Process Management 2400 Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2010

23 Product Data Sheet PDS 71-steam/rev.H October 2008 Steam Sterilizable Solutions Dissolved Oxygen, ph, and Conductivity STEAM STERILIZABLE AND AUTOCLAVABLE DISSOLVED OXY- GEN, ph, AND CONDUCTIVITY SENSORS: ALLOWS FOR FIXED OR RETRACTABLE mounting configurations MEASURES ACCURATELY after many 140 C (284 F) Steam-In- Place (SIP) applications REQUIRES MINIMAL SERVICING INSTALLS EASILY with quick cable-to-sensor disconnections PROVIDES FAST AND STABLE READINGS SENSOR MOUNTING HARDWARE DESIGNED FOR TYPICAL BIOTECHNOLOGY AND PHARMACEUTICAL PROCESSES: MEETS SANITARY REQUIREMENTS OFFERS VERSATILE MOUNTING OPTIONS ACCEPTS SENSORS OF VARIOUS INSERTION LENGTHS INSTALLS WITH STANDARD G 1-1/4 inch weld-in socket ANALYZERS AND TRANSMITTERS WITH MANY OPTIONS: TWO OR FOUR wire models TEMPERATURE COMPENSATION 4-20 ma, HART, OR FIELDBUS communications SENSOR DIAGNOSTIC capabilities PLANTWEB ALERTS HIGH/LOW alarms PID control VARIOUS MOUNTING STYLES ENCLOSURES for various safety levels FEATURES AND BENEFITS For many years, Emerson Process Management, Rosemount Analytical, Liquid Division, has provided quality on-line instruments and sensors used in various industries. This complete line of steam-sterilizable products caters to the most demanding processes used in the Biotechnology, Pharmaceutical, and Food & Beverage industries. Emerson Process Management s instruments and sensors are ideal for ph, dissolved oxygen, and conductivity measurements for batch processes where steam-in-place sterilization is performed. The high-performance sensors offer a long, stable life while requiring only minimal maintenance. The various mounting accessories have been specifically designed to provide easy sensor access with either fixed weld-in or retractable mounting configurations. All instruments offer a wide variety of features, allowing the user to choose the best analyzer/transmitter for their individual process needs.

24 MODEL Hx338 ph SENSOR CODE DESCRIPTION mm (4.725 in.) mm (8.859 in.) mm ( in.) mm ( in.) mm ( in.) MODEL Hx338 STEAM STERILIZABLE AND AUTOCLAVABLE COMBINATION ph SENSOR Model Hx338 sensor provides biotechnology and pharmaceutical processes with the unique Tri-Triple reference technology. The Tri-Triple reference is made up of three (3) separate peripheral liquid junctions that make contact with the solution, and then two (2) inner junctions that protect the reference. The first junction eliminates flow sensitivity and maintains a steady reference signal. The three overall reference junctions work together to help maintain a drift-free ph signal and fight poisoning ions (i.e. sulfides, proteins, or sugars), even after numerous sterilization cycles. This sensor is also excellent for other applications, including chemical reactions or food processing. The Model Hx338 can be used with the Insertion or Retractable sensor mounting assemblies or similar accessories with a PG 13.5 sensor connection, all of which can be used with large scale batch processes where steam-in-place sterilization is performed. For smaller batch processes, it can be threaded directly into the top plate and autoclaved if necessary. The 12 mm diameter sensor is offered in five different lengths for various insertion depths. The sensor features a PG 13.5 thread for simple process connection and a single-pole S7 connector plug for quick disconnect from a mating cable. VP8 cable assembly works with both VP6 and VP8 sensor connector (-72). ORDERING INFORMATION Model Hx338 is a 12 mm sensor offered with PG 13.5 threads, an S7 connector plug, and five various insertion lengths. TEMPERATURE COMPENSATION CODE DESCRIPTION 72 PT100 with a VP connector (can be ordered with any length sensor) The VP connector can be ordered with any length sensor. PN CABLE ACCESSORIES m (3.3 ft), AS7 connector, bare wire on analyzer end m (16.4 ft), AS7 connector, bare wire on analyzer end m (32.8 ft), AS7 connector, bare wire on analyzer end m (3.3 ft), AS7 connector, BNC on analyzer end m (9.8 ft), AS7 connector, BNC on analyzer end m (16.4 ft), AS7 connector, BNC on analyzer end The AS7 connector cable is S8 cable, free rotating connector, single connetor, single pole 5m offered in various lengths and is terminated with S8 cable, free rotating connector, single connetor, single pole 10m choice of BNC or bare wires ft. (4.6 m) cable with mating VP connector with BNC on transmitter end ft. (4.6 m) cable with mating VP connector with bare wires on transmitter end ft. cable with mating VP8 connector ft. cable with mating VP8 connector ft. cable with mating VP8 connector ft. cable with mating VP8 connector The Weld-in Socket (see ft. cable with mating VP8 connector page 18) is used to mount ft. cable with mating VP8 connector the Insertion or Retractable ft. cable with mating VP8 connector Mounting Assembly into tanks or pipes ft. cable with mating VP8 connector ft. cable with mating VP8 connector PN MOUNTING ACCESSORIES Insertion assembly 70 mm insertion, use 120 mm sensor Retractable assembly 70 mm insertion, use 225 mm sensor Service kit for insertion mounting assembly Service kit for retractable mounting assembly degree weld-in socket, G 1-1/4 in. thread, 44 mm SQ Triclamp Insertion Assembly The Retractable Mounting Assembly (see page 16) can be used with Model Hx to achieve insertion and removal of the sensor without shutting down the process. 2 Rosemount Analytical

25 MODEL Hx338 STEAM STERILIZABLE AND AUTOCLAVABLE COMBINATION ph SENSOR SPECIFICATIONS ph Range: 2 to 12 (0 to 14 for short periods) Temperature Range: -10 to 140 C (14 to 284 F) Maximum Pressure: 87 psig (600 kpa abs, 6 bar) Wetted materials: Glass, EPDM Process connections: PG 13.5 threads Sensor Lengths: Choice of 120, 225, 325, 400, or 425 mm Cable Connector: S7 connector plug, single pole, and VP connector Cable Compatibility: any AS7 connector plug, single pole or S8 cable PN VP8 connector, 10 ft cable PN VP8 connector 15 ft cable Compatible Mounting Accessory: Insertion or retractable mounting assembly (see pages 15 and 16) Compatible Analyzers: All Rosemount Analytical ph analyzers/transmitters 1 Viton is a registered trademark of E.I. du Pont de Nemours & Co. 1. COMPATIBLE CONNECTOR CABLE PN , , , , , , , SENSOR DIMENSIONAL DRAWING SAMPLE INSTALLATION DRAWING A bench top fermentor (bioreactor, 5 L to 50 L) illustrating a top mount plate using the retractable mounting assembly. Sensor can also be mounted directly into top mount plate depending on port design. SAMPLE INSTALLATION DRAWING A pilot plant fermentor (bioreactor, 50 L to 500 L) illustrating a side mount configuration using a G 1-1/4 in., 15 weld-in socket and the retractable mounting assembly. Note that these mounting assemblies can also be used with dissolved oxygen sensors. Rosemount Analytical 3

26 Model Hx348 sensor provides a solution for difficult ph measurements. This combination ph sensor offers the unique Tri-Triple reference technology. The Tri-Triple reference is made up of three (3) separate peripheral liquid junctions that make contact with the solution, and then two (2) inner junctions that protect the reference. The first junction eliminates flow sensitivity and maintains a steady reference signal. The three overall reference junctions work together to help maintain a drift-free ph signal and fight poisoning ions (i.e. sulfides), even after numerous sterilization cycles. Applications for this sensor can be found in the biotechnology, pharmaceutical, and food processing industries. The Model Hx348 ph sensor is a combination ph sensor that uses an S7 connector plug for quick disconnect from the cable. It is offered in four (4) different insertion lengths in either a disposable or refillable reference design. The refillable sensor is ideal for critical measurements in difficult applications i.e., sulfides, proteins, and sugars. It is offered with either the Tri-Triple reference junction for use in media containing proteins, or with a single, clog-free, platinum junction for use in media containing sulfides. The special electrolyte has been developed to inhibit reference contamination. The disposable sensor has been developed to allow simplicity of use while still providing a stable ph signal over the long life of the sensor. Both the refillable and disposable sensors can be used with the pressurized mounting accessory or a similar assembly. ORDERING INFORMATION MODEL Hx348 STEAM STERILIZABLE AND AUTOCLAVABLE COMBINATION ph SENSOR MODEL Hx348 ph SENSOR CODE SENSOR INSERTION LENGTHS mm (4.73 in.) mm (5.91 in.) mm (7.88 in.) mm (9.85 in.) CODE SENSOR DESIGN 10 Disposableand pressurizable, Tri-Triple junction, recommended for use in media containing proteins 11 Refillable and pressurizable, single clog-free platinum junction, recommended for use in media containing sulfides 12 Refillable and pressurizable, Tri-Triple junction, recommended for use in media containing proteins Model Hx348 is offered in four different insertion lengths and can be mounted in the process using a Pressurized Mounting Assembly (see page 17). The AS7 connector cable is offered in various lengths and is terminated with choice of BNC or bare wires. PN CABLE ACCESSORIES m (3.3 ft), AS7 connector, bare wire on analyzer end m (16.4 ft), AS7 connector, bare wire on analyzer end m (32.8 ft), AS7 connector, bare wire on analyzer end m (3.3 ft), AS7 connector, BNC on analyzer end m (9.8 ft), AS7 connector, BNC on analyzer end m (16.4 ft), AS7 connector, BNC on analyzer end S8 cable, free rotating connector, single connetor, single pole 5m S8 cable, free rotating connector, single connetor, single pole 10m PN MOUNTING ACCESSORIES Pressurized Assembly for 120 mm electrode, 70 mm insertion Pressurized assembly for 150 mm electrode, 100 mm insertion Pressurized assembly for 200 mm electrode, 150 mm insertion Pressurized assembly for 250 mm electrode, 200 mm insertion degree weld-in socket, G 1-1/4 in. thread, 44 mm Service kit for pressurized mounting accessory ml refill solution for code -11 sensors only ml refill solution for code -12 sensors only The Weld-in Socket (see page 18) is used to mount the Pressurized Mounting Assembly into tanks or pipes. The Pressurized Mounting Assembly (see page 17) is offered in four different insertion lengths and can be used for either the disposable or refillable Model Hx348 sensor. 4 Rosemount Analytical