Conductivity DATA SHEET Inductive Conductivity Sensors Features and Benefits Wide Measuring Range Hach’s Inductive Conductivity Sensors measure 200 up to 2,000,000 microSiemens/cm. A built-in Pt 1000 RTD compensates the measured conductivity for changes in process temperature. Low-maintenance Design The inductive sensor design eliminates polarization and electrode coating problems that commonly affect conventional contacting electrode-type conductivity sensors. Complete Digital System All 3700 sc sensors come complete with a Digital Gateway for use with a Hach sc Digital Controller. Principal of Operation Inductive conductivity sensors induce a low current in a The innovative technology of Hach’s Inductive Conductivity Sensors closed loop of solution, then measure the magnitude of DW eliminates polarization and electrode coating problems in harsh this current to determine the solution’s conductivity. environments. Available in sanitary (CIP) flange style and convertible The conductivity analyzer drives Torroid A, inducing an ® ® styles in PFA Teflon , polypropylene, PEEK , and PVDF. alternating current in the solution. This current signal flows WW in a closed loop through the sensor bore and surrounding solution. Torroid B senses the magnitude of the induced current which is proportional to the conductance of the PW solution. The analyzer processes this signal and displays the corresponding reading. IW Full-Featured “Plug and Play” Hach sc Digital Controllers There are no complicated wiring or set up procedures with any Hach sc controller. Just plug in any combination of Hach digital sensors and it’s ready to use— it’s “plug and play.” One or multiple sensors—The sc controller family allows you to receive data from up to eight Hach digital sensors in any combination using a single controller. Communications—Multiple alarm/control schemes are available using the relays and PID control outputs. Available ® communications include analog 4-20 mA, digital MODBUS (RS485 and RS232) or Profibus DP protocols. (Other digital protocols are available. Contact your Hach representative for details.) Versatile Mounting Styles Data logger—A built-in data logger collects measurement Sensors can be installed using a choice of data, calibration, verification points, and alarm history. four mounting styles—immersion, insertion, union, and sanitary. Please turn to page 6 for more information. DW = drinking water WW = wastewater municipal PW = pure water / power IW = industrial water E = environmental C = collections FB = food and beverage 2 Specifications* Measuring Range Temperature/Pressure Limits (continued) From 200 microSiemens/cm up to Sensor with Hardware: † 2,000,000 microSiemens/cm Immersion and Union See graphs below for specific Hach sensor and mounting Operating Temperature Range hardware combinations -10 to 200ºC (14 to 392ºF); limited only by sensor body material and mounting hardware; see below Flow Rate 3 m (10 ft.) per second, maximum Temperature Compensator Pt 1000 RTD Sensor Cable Polypropylene and PVDF Sensors: 5 conductor (plus two isolated shields) cable with XLPE (cross-linked polyethylene) jacket; rated to 150ºC (302ºF); 6 m (20 ft.) long ® ® PEEK and PFA Teflon Sensors: 5 conductor (plus two isolated shields) cable with Teflon- coated jacket; rated to 200ºC (392ºF); 6 m (20 ft.) long Wetted Materials ® ® Polypropylene, PVDF, PEEK or PFA Teflon Model 3700 sc-series Material Compatibility ® ® Polypropylene PVDF PEEK Teflon Calcium Chloride • • • Hydrochloric Acid • • Hydrofluoric Acid • • Nitric Acid • Phosphoric Acid • • • Potassium Hydroxide • • • Seawater • • • • Sodium Hydroxide • • • Sulfuric Acid • Water • • • • NOTE: Compatibilities are valid for temperatures up to 115°C. For other applications or conditions, please contact Hach Technical Support. Temperature/Pressure Limits Sensor Only (no hardware): Polypropylene 6.9 bar at 100ºC (100 psi at 212ºF) PVDF 6.9 bar at 120ºC (100 psi at 248ºF) ® † PEEK Ratings for the above Hach sensor and mounting hardware 13.8 bar at 200ºC (200 psi at 392ºF) combinations are based upon water service. More severe service may ® PFA Teflon require a correction factor. †† 13.8 bar at 200ºC (200 psi at 392ºF) Sanitary hardware ratings are for MH018S8SZ hardware. Other hardware and clamp combinations may reduce the listed ratings. Insertion Hardware only: MH118M9NZ MH138M9NZ Temperature Range** -5 to 95ºC (23 to 203ºF) supported or -5 to 80ºC (23 to 176ºF) unsupported if unsupported installed vertically; -5 to 95ºC (23 to 203ºF) when supported with bracket Maximum Pressure** 5.5 bar at 95ºC (80 psig at 203ºF) 3.5 bar at 90ºC (50 psig at 194ºF) ® ® Wetted Materials 316 stainless steel, Teflon valve seats, CPVC, brass, Teflon valve seats, and ® ® and Viton O-rings Viton O-ring seals **These sensor/hardware temperature and pressure ratings are limited by the hardware material, maximum pressure, and whether the assembly is supported or unsupported. *Specifications subject to change without notice. ® ® ® PEEK is a registered Trademark of ICI Americas, Inc.; Teflon is a registered Trademark of DuPont Co.; Viton is a registered trademark of E.I. DuPont de Nemours + Co. 3 Engineering Specifications 1. The electrodeless conductivity sensor shall measure from 0-200 to 0-2,000,000 microSiemens/cm, and shall have a built-in Pt 1000 RTD element to compensate measured conductivity for changes in process temperature. ® 2. The sensor shall be constructed of only one wetted body material which shall be polypropylene, PVDF, PEEK ® or PFA Teflon . 3. The sensor cable shall be water resistant and rated to 150ºC (302ºF) for polypropylene and PVDF sensors ® or 200ºC (392ºF) for PEEK and PFA Teflon® sensors. 4. The sensor shall have a 1/2-inch nominal diameter bore for operation in slurries. 5. The sensor shall be a: a) Convertible style that can be directly fastened onto the end of a pipe for immersion mounting or, by using a special Hach union-mount adapter, mounted into any 2-inch NPT fitting (tee, weldolet, pipe saddle, etc.). The convertible style sensor can also be insertion mounted into a 2-inch ball valve assembly. b) Sanitary style with materials that conform to the provisions of 3-A Sanitary Standards to withstand CIP cleaning, and with an integral 2-inch sanitary-mount flange to mount into a standard 2-inch sanitary tee. 6. An optional sensor module or Digital Gateway shall be available for connecting to a Hach sc Digital Controller. 7. The sensor shall be Hach Company 3700 sc or 3700 Inductive Conductivity Sensor. 4 Dimensions Convertible Style Sanitary Style 5 Ordering Information 3700 sc Digital Inductive Conductivity Sensors Accessories All digital inductive sensors come complete with standard Cables sensor cable length of 6 m (20 ft.), digital gateway, and Digital cables are used only with digital sensors or gateways a 1 m (3.3 ft.) digital extension cable. when connecting to a Hach sc Digital Controller. Choice of body styles: 6122400 Digital Extension Cable, 1 m (3.2 ft.) • Convertible – 2-inch NPT, designed for tee, other 5796000 Digital Extension Cable, 7.7 m (25 ft.) flow through, insertion, and pipe mountings for immersion. 5796100 Digital Extension Cable, 15 m (50 ft.) • Sanitary (CIP) –2-inch flange, special cap, and EPDM compound gasket. Conforms to 5796200 Digital Extension Cable, 31 m (100 ft.) provisions of 3-A Sanitary Standards. Analog cables are used only with analog sensors, junction box, and controller. Product Number Body Style Body Material 1W1100 Analog Interconnect Cable (order per foot) D3705E2T Sanitary Polypropylene D3706E2T Sanitary PVDF Digital Termination Box D3708E2T Sanitary PFA Teflon Used with digital extension cables when the desired cable D3725E2T Convertible Polypropylene length between the digital sensor/digital gateway and sc D3726E2T Convertible PVDF Digital Controller is between 100 m (328 ft) and D3727E2T Convertible PEEK 1000 m (3280 ft). D3728E2T Convertible PFA Teflon 5867000 Digital Termination Box Analog Junction Box Digital Gateway Used with analog interconnect cable when the desired cable length between analog sensor and analog controller is greater 6120800 Use the Digital Gateway to connect analog Hach than the standard length of sensor cable. Each junction box 3700 inductive conductivity sensors to the Hach includes terminal strip and gasket. sc1000 digital controller 60A2053 Junction Box, Surface-mount, aluminum (includes mounting hardware) 3700 Analog Inductive Conductivity Sensors 60A9944 Junction Box, Pipe-mount, PVC for 1/2-inch diameter pipe (includes mounting hardware) All Analog sensors come complete with standard sensor cable length of 6 m (20 ft.). 60G2052 Junction Box, Pipe-mount, PVC for 1-inch diameter pipe (includes mounting hardware) Choice of body styles: 76A4010-001 Junction Box, NEMA 4X (no mounting • Convertible – 2-inch NPT, designed for tee, other hardware included) flow through, insertion, and pipe mountings for immersion. • Sanitary (CIP) –2-inch flange, special cap, and EPDM compound gasket. Conforms to Conductivity Reference Solutions provisions of 3-A Sanitary Standards. Please specify the desired conductivity value when placing your order. Product Number Body Style Body Material 3705E2T Sanitary Polypropylene Product Number Description Volume 3706E2T Sanitary PVDF 25M3A2000-119 100-1000 µS/cm 1 liter 3708E2T Sanitary PFA Teflon 25M3A2050-119 1000-2000 µS/cm 1 liter 3725E2T Convertible Polypropylene 25M3A2100-119 2000-150,000 µS/cm 1 liter 3726E2T Convertible PVDF 25M3A2200-119 200,000-300,000 µS/cm 1 liter 3727E2T Convertible PEEK 3728E2T Convertible PFA Teflon 6 Ordering Information continued Mounting Hardware 1. Sanitary Style sensor 2. Convertible Style sensor 3. Convertible Style sensor 4. Convertible Style sensor sanitary clamp mounting union mounting immersion mounting ball valve mounting Sanitary Mount Immersion Mount MH018S8SZ 316SS MH432G CPVC Pipe Includes 316 SS sanitary 2-inch tee, heavy-duty clamp, Includes 1/2-inch diameter x 4-foot pipe, 1/2- x 3/4-inch special cap, and EPDM compound gasket. NPT coupling, and plastic pipe-mount junction box with terminal strip. Union Mount MH518N3NZ 316 SS Insertion Mount MH538N3NZ CPVC MH138M9NZ CPVC MH568N3NZ PVDF MH118M9NZ 316 SS Includes adapter and a 2-inch pipe tee. Union adapters Includes 2-inch NPT insertion assembly with ball valve. are used with convertible style sensors that are to be union or flange mounted into a standard 2-inch NPT pipe tee or insertion mounted into a 2-inch ball valve assembly. 7 Common Applications Refer to page 2 for sensor temperature and pressure limits. Industry Application Recommended Sensor Style (and Material) Metals Finishing and Mining Plating bath monitoring Convertible (polypropylene) Alkaline/caustic wash Convertible (polypropylene) Rinse water Convertible (polypropylene) Pickling processes Convertible (PVDF) Metals recovery Convertible (PEEK) Copper floatation Convertible (PEEK) Scrubbers Convertible (polypropylene) Chemicals and Refining Acid production Convertible (PFA Teflon) Caustic production Convertible (PFA Teflon Phosphates Convertible (PFA Teflon) Fertilizers Convertible (PFA Teflon) Detergents Convertible (PFA Teflon) Glycerin Convertible (PVDF) Moisture detection Convertible (PVDF or PFA Teflon) Scrubbers Convertible (PVDF) Wastewater Convertible (PVDF) Oil well drilling mud Convertible (PEEK) Leak detection Convertible (PEEK) Alkylation Convertible (PFA Teflon) Spill detection Convertible (PEEK) Food and Beverage Brine concentration Convertible (polypropylene) Desalting Convertible (polypropylene) Cheese production Sanitary (PFA Teflon) Caustic peeling Convertible (PFA Teflon) Pickle making Sanitary (polypropylene) CIP applications Sanitary (PFA Teflon) Rinse water control Convertible (polypropylene) Sugar carbonation Convertible (PFA Teflon) Pulp and Paper White, black and green liquor Convertible (PEEK) Stock washing Convertible (PEEK) Wash and cooking liquor control Convertible (PEEK) Scrubbers Convertible (PEEK) Spill detection Convertible (PEEK) Textile Manufacturing Rinse water Convertible (polypropylene) Dye baths Convertible (polypropylene) Bleaching Convertible (polypropylene) Mercerizing Convertible (polypropylene) Acid washing Convertible (polypropylene) Carbonizing and scouring baths Convertible (polypropylene) Natural Waters, Lakes, Streams, Water pollution monitoring Convertible (polypropylene) and Sea Water Salt intrusion Convertible (polypropylene) Salinity Convertible (polypropylene) Clean Water Treatment Ion exchange regeneration Convertible (polypropylene) Reverse osmosis concentrate monitoring Convertible (polypropylene) Softener regeneration Convertible (polypropylene) Acid/caustic concentration control Convertible (PVDF) Wastewater Treatment Acid/caustic concentration control Convertible (PEEK) Spill detection Convertible (PEEK) Steam Generation Boiler blowdown Convertible (polypropylene) Flue gas scrubbers Convertible (polypropylene) 8 At Hach, it’s about learning from our customers and To complete your conductivity providing the right answers. measurement system, choose from It’s more than ensuring the quality of water—it’s about these Hach controllers… ensuring the quality of life. When it comes to the things Model sc200 Controller that touch our lives... (see Lit. #2665) Keep it pure. The sc200 controller platform can be configured to operate either 2 Digital Sensor Inputs, or 1 or 2 Analog Sensor Inputs, or a combination of Digital and Analog Make it simple. Sensor Inputs. Customers may choose their communication options from a variety of offerings ranging from MODBUS RTU to Profibus DPV1. Be right. sc200 for Hach Digital Sensors LXV404.99.00552 sc200 controller, 2 channel, digital LXV404.99.00502 sc200 controller, 1 channel, digital For current price information, LXV404.99.00542 sc200 controller, 2 channel, digital & mA input technical support, and ordering LXV404.99.00512 sc200 controller, 2 channel, digital & pH/DO LXV404.99.00522 sc200 controller, 2 channel, digital & Conductivity assistance, contact the Hach LXV404.99.00532 sc200 controller, 2 channel, digital & Flow office or distributor serving your area. sc200 for Hach Analog Sensors LXV404.99.00102 sc200 controller, 1 channel, pH/DO LXV404.99.00112 sc200 controller, 2 channel, pH/DO In the United States, contact: LXV404.99.00202 sc200 controller, 1 channel, Conductivity LXV404.99.00222 sc200 controller, 2 channel, Conductivity HACH COMPANY World Headquarters LXV404.99.00212 sc200 controller, 2 channel, pH/DO & Conductivity P.O. Box 389 LXV404.99.00302 sc200 controller, 1 channel, Flow Loveland, Colorado 80539-0389 LXV404.99.00332 sc200 controller, 2 channel, Flow U.S.A. LXV404.99.00312 sc200 controller, 2 channel, Flow & pH/DO Telephone: 800-227-4224 LXV404.99.00322 sc200 controller, 2 channel, Flow & Conductivity Fax: 970-669-2932 Note: Other sensor combinations are available. Please contact Hach Technical Support E-mail: orders@hach.com or your Hach representative. www.hach.com Note: Communication options (MODBUS and Profibus DPV1) are available. Model sc1000 Controller U.S. exporters and customers in Canada, (see Lit. #2403) Latin America, sub-Saharan Africa, Asia, Each sc1000 Probe Module provides power to the system and can accept up to 8 digital and Australia/New Zealand, contact: sensors/expansion boards. Probe Modules can be networked together to accommodate HACH COMPANY World Headquarters up to 32 digital sensors/expansion boards attached to the same network. P.O. Box 389 LXV402.99.00002 sc1000 Display Module Loveland, Colorado 80539-0389 LXV400.99.1R572 sc1000 Probe Module, 4 sensors, U.S.A. 4 mA Out, 4 mA In, 4 Relays, 110-230V Telephone: 970-669-3050 LXV400.99.1B572 sc1000 Probe Module, 4 sensors, Fax: 970-461-3939 4 mA Out, 4 mA In, 4 Relays, RS-485 (MODBUS), 110-230V E-mail: intl@hach.com LXV400.99.1F572 sc1000 Probe Module, 4 sensors, www.hach.com 4 mA Out, 4 mA In, 4 Relays, PROFIBUS DP, 110-230V LXV400.99.1R582 sc1000 Probe Module, 6 sensors, 4 mA Out, 4 mA In, 4 Relays, 110-230V In Europe, the Middle East, and Mediterranean Africa, contact: si792 2-wire Transmitter (for 3700 Analog Inductive Conductivity Sensors) HACH LANGE GmbH Willstätterstraße 11 (see Lit. #2605) D-40549 Düsseldorf The Hach si792 2-wire electrochemistry transmitters are full-featured, intuitive to GERMANY operate, and work with Hach’s world-class water quality sensors. Rugged Tel: +49 (0) 211 5288-0 construction is designed for Class I, Division 2 (C1, D2) respectively Class I, Division 1 (C1, D1) application. Digital communication capabilities are available. Fax: +49 (0) 211 5288-143 E-mail: info@hach-lange.de LXV503.99.70002 si792 E; Class 1 Division 2; HART LXV503.99.70102 si792x E; Class 1 Division 1; HART www.hach-lange.com LXV503.99.76102 si792x E-PA; Class 1 Division 1; PROFIBUS PA LXV503.99.77102 si792x E-FF; Class 1 Division 1; FOUNDATION FIELDBUS Lit. No. 2465 Rev 2 J10 Printed in U.S.A. ©Hach Company, 2010. All rights reserved. In the interest of improving and updating its equipment, Hach Company reserves the right to alter specifications to equipment at any time.