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HomeMy WebLinkAboutAnalytical - TAB 3 - HACH pH & ORP Probes and AnalyzerDW = drinking water WW = wastewater municipal PW = pure water / power IW = industrial water E = environmental C = collections FB = food and beverage pH/ORPDATA SHEET Differential pH and ORP Sensors Differential Electrode Measurement Technique This field-proven technique uses three electrodes instead of the two normally used in conventional pH sensors. Process and reference electrodes measure the pH differentially with respect to a third ground electrode. The end result is unsurpassed measurement accuracy, reduced reference junction potential, and elimination of sensor ground loops. These sensors provide greater reliability, resulting in less downtime and maintenance. Patented Technology The former GLI, now a Hach Company brand, invented the Differential Electrode Technique for pH measurement in 1970. The pHD™ sensor series (U.S. Patent Number 6395158B1, dated May 28, 2002) takes this field-proven technology to a new level. Replaceable Salt Bridge/Protector The unique, replaceable salt bridge holds an extraordinary volume of buffer to extend the working life of the sensor by protecting the reference electrode from harsh process conditions. The salt bridge simply threads onto the end of the sensor if replacement is needed. Built-in Encapsulated Preamp Encapsulated construction protects the sensor’s built-in preamp from moisture and humidity, ensuring reliable sensor operation. The preamp in the pHD analog sensor produces a strong signal, enabling the sensor to be located up to 1000 m (3280 ft.) from the analyzer. Durable Body Materials Both the digital and analog pH and ORP differential sensors feature a durable PEEK®body for chemical compatibility with most process solutions. For less aggressive solutions, Hach offers a Ryton®sensor in a convertible style for pH and ORP measurement. A sensor with a stainless steel body is available for immersion applications. Digital Electronics Modules Sensors are available with integral digital electronics or with a gateway module for high temperature (above 70ºC) applications. Versatile Mounting Styles Sensors are available in four mounting styles—convertible, insertion, immersion, and sanitary. Please turn to page 5 for more information. Full Featured “Plug and Play” sc100 Digital Controller There’s no complicated wiring or set up procedures with the Hach sc100 controller. Just plug in any Hach digital sensor and it’s ready to use—it’s “plug and play.” One or two sensors—Use the sc100 Digital Controller to receive data from up to two Hach digital sensors in any combination. Communications—Multiple alarm/control schemes are available using three relays and two PID control outputs. Communications use analog 4-20 mA and digital MODBUS®/RS485, MODBUS®/RS232 protocols. (Other digital protocols are available. Contact your Hach representative for details.) Every sc100 controller is equipped with wireless communication through an infrared port. Data logger—A built-in data logger collects measurement data, calibration, verification points, and alarm history for up to 6 months. Features and Benefits DW WW PW IW Hach Digital pHD sc sensors are available in convertible (PEEK®or Ryton®), insertion, and sanitary body styles. Three electrodes are used in these sensors to increase measurement accuracy and eliminate sensor ground loops. pH Sensors Most pH applications fall in the 2.5 to12.5 pH range. A Hach pHD sc Differential pH sensor with the wide-range glass process electrode performs exceptionally well in this range. Some industrial applications require accurate measurement and control below 2 or above 12 pH. In these special cases, please contact Hach Technical Support for further details. Measuring Range -2 to 14 pH Sensitivity ± 0.01 pH Stability 0.03 pH per 24 hours, non-cumulative Operating Temperature Digital Sensor:-5 to 70ºC (23 to 158ºF) Analog Sensor with Digital Gateway:-5 to 105ºC (23 to 221ºF) Immersion Sensor:0 to 50ºC (32 to 122ºF) Flow Rate 3 m (10 ft.) per second, maximum Sensor Pressure/Temperature Limits Digital: 6.9 bar at 70ºC (100 psi at 158ºF) Analog: 6.9 bar at 105ºC (100 psi at 221ºF) Built-in Temperature Element NTC 300 ohm thermistor for automatic temperature compensation and analyzer temperature readout Transmission Distance 100 m (328 ft.), maximum 1000 m (3280 ft.), maximum when used with a termination box Sensor Cable (integral) 4 conductor cable with one shield and polyurethane jacket; rated to 105ºC (221ºF); 10 m (33 ft.) standard length Wetted Materials PEEK®or Ryton® (PVDF), salt bridge of matching material with Kynar®junction, glass process electrode, titanium ground electrode, and Viton®O-ring seals (pH sensor with optional HF-resistant glass process electrode has 316 stainless steel ground electrode, and perfluoroelastomer wetted O-rings; consult factory for other available wetted O-ring materials) ORP (Redox) Sensors For best ORP measuring results in solutions containing zinc, cyanide, cadmium or nickel, Hach recommends using the pHD sc ORP sensor equipped with an optional gold electrode. Measuring Range -1500 to +1500 mV Sensitivity ± 0.5 mV Stability 2 mV per 24 hours, non-cumulative Operating Temperature Digital Sensor:-5 to 70ºC (23 to 158ºF) Analog Sensor with Digital Gateway:-5 to 105ºC (23 to 221ºF) Immersion Sensor:0 to 50ºC (32 to 122ºF) Flow Rate 3 m (10 ft.) per second, maximum Sensor Pressure/Temperature Limits Digital: 6.9 bar at 70ºC (100 psi at 158ºF) Analog: 6.9 bar at 105ºC (100 psi at 221ºF) Built-in Temperature Element NTC 300 ohm thermistor for analyzer temperature readout only—no automatic temperature compensation necessary for ORP measurement Transmission Distance 100 m (328 ft.), maximum 1000 m (3280 ft.), maximum when used with a termination box Sensor Cable (integral) 4 conductor cable with one shield and polyurethane jacket; rated to 105ºC (221ºF); 10 m (33 ft.) standard length Wetted Materials PEEK®or Ryton® (PVDF), salt bridge of matching material with Kynar®junction, glass and platinum (or plastic and gold) process electrode, titanium ground electrode, and Viton® O-ring seals Specifications* PEEK®is a registered trademark of ICI Americas, Inc.; Ryton®is a registered trademark of Phillips 66 Co.; Kynar®is a registered trademark of Pennwalt Corp.; Viton®is a registered trademark of E.I. DuPont de Nemours + Co. 2 *Specifications subject to change without notice. 3 Engineering Specifications PEEK®Sensor 1. The pH or ORP sensor shall be of Differential Electrode Technique design using two measuring electrodes to compare the process value to a stable internal reference standard buffer solution. The standard electrode shall have non-flowing and fouling-resistant characteristics. 2. The sensor shall have a hex-shaped body to facilitate mounting, and shall be constructed of PEEK®material for exceptional chemical resistance and mechanical strength. This material shall enable the sensor to be installed in metal fittings without leakage usually caused by heating and cooling cycles when dissimilar materials are threaded together. 3. The sensor shall have a: a) Convertible body style featuring 1-inch NPT threads on both ends to mount into a standard 1-inch pipe tee, into a Hach adapter pipe for union mounting with a standard 1-1/2 inch tee, or onto the end of a pipe for immersion into a vessel. b) Insertion body style featuring 1-inch NPT threads only on the cable end to mount into a Hach ball valve hardware assembly, enabling the sensor to be inserted into or retracted from the process without stopping the process flow. c) Sanitary body style featuring an integral 2-inch flange to mount into a Hach 2-inch sanitary tee. The sanitary body style sensor shall include a special cap and EDPM compound gasket for use with the Hach sanitary hardware. 4. The built-in electronics of the sensor shall be completely encapsulated for protection from moisture and humidity. 5. The sensor shall have a built-in preamplifier to enable the signal to be transmitted up to 100 m (328 ft.) with standard cabling and up to 1000 m (3280 ft.) with a termination box. 6. The sensor signal shall have an integral temperature sensor. The pH sensor shall automatically compensate measured values for changes in process temperature. 7. The ORP sensor shall include a titanium ground electrode (standard) to eliminate ground loop currents in the measuring electrodes. 8. The sensor shall be Hach Company Model pHD sc or pHD for pH or ORP measurement. Ryton®Sensor 1. The pH or ORP sensor shall be of Differential Electrode Technique design using two measuring electrodes to compare the process value to a stable internal reference standard buffer solution. The standard electrode shall have non-flowing and fouling-resistant characteristics. 2. The sensor shall have a hex-shaped body to facilitate mounting, and shall be constructed of Ryton®material for exceptional chemical resistance and mechanical strength. This material shall enable the sensor to be installed in metal fittings without leakage usually caused by heating and cooling cycles when dissimilar materials are threaded together. 3. The sensor shall have a convertible body style featuring 1-inch NPT threads on both ends to mount into a standard 1-inch pipe tee, into a Hach adapter pipe for union mounting with a standard 1-1/2 inch tee, or onto the end of a pipe for immersion into a vessel. 4. The built-in electronics of the sensor shall be completely encapsulated for protection from moisture and humidity. 5. The sensor shall have a built-in preamplifier to enable the signal to be transmitted up to 100 m (328 ft.) with standard cabling and up to 1000 m (3280 ft.) with a termination box. 6. The sensor signal shall have an integral temperature sensor. The pH sensor shall automatically compensate measured values for changes in process temperature. 7. The ORP sensor shall include a titanium ground electrode (standard) to eliminate ground loop currents in the measuring electrodes. 8. The sensor shall be Hach Company Model pHD sc or pHD for pH or ORP measurement. Stainless Steel Sensor 1. The pH or ORP sensor shall be of differential electrode technique design using two measuring electrodes to compare the process value to a stable internal reference standard buffer solution. The standard electrode shall have non-flowing and fouling-resistant characteristics. 2. The sensor shall be capable of chain mounting for immersion applications, and shall be constructed of 316 stainless steel. 3. The built-in electronics of the sensor shall be completely encapsulated for protection from moisture and humidity. 4. The sensor shall have a built-in preamplifier to enable the signal to be transmitted up to 100 m (328 ft.) with standard cabling and up to 1000 m (3280 ft.) with a termination box. 5. The sensor signal shall have an integral temperature sensor to automatically compensate measured values for changes in process temperature. 6. The sensor shall include a titanium ground electrode (standard) to eliminate ground loop currents in the measuring electrodes. 7. The sensor shall be Hach Company Model pHD sc or pHD for pH or ORP measurement. 54.6 mm (2.15 inches)1-inch NPT 232.15 mm (9.14 inches) 49.8 mm (1.96 inches) 29.5 mm (1.16 inches) 26.7 mm (1.05 inches) 34.8 mm (1.37 inches) 39.11 mm (1.54 inches) 271.3 mm (10.68 inches) 59.44 mm (2.34 inches) 4 Dimensions Convertible Style 39.11 mm (1.54 inches) 271.3 mm (10.68 inches) 26.7 mm (1.05 inches) 35.4 mm (1.36 inches)1-inch NPT 1-inch NPT 232.15 mm (9.14 inches) 29.5 mm (1.16 inches) 49.8 mm (1.96 inches) 59.44 mm (2.34 inches) Insertion Style Sanitary Style 26.7 mm (1.05 inches) 35.4 mm (1.36 inches) 1-inch NPT 59.44 mm (2.34 inches) 39.11 mm (1.54 inches) 232.15 mm (9.14 inches) 271.3 mm (10.68 inches) 29.5 mm (1.16 inches) Immersion Style 54.6 mm (2.15 inches) 32.8 mm (1.29 inches) 43.9 mm (1.73 inches) 1-inch NPT 1-inch NPT 57.2 mm (2.25 inches) 29.5 mm (1.16 inches) 35.8 mm (1.41 inches) 4.5 mm (0.179 inches) 264.67 mm (10.42 inches)59.4 mm (2.34 inches)324.0 mm (12.755 inches) Digital Gateway 184.15 mm (7.25 inches)34.29 mm (1.35 inches) Analog Convertible Style Analog Insertion Style Analog Sanitary Style 5 Ordering Information pHD sc Digital Differential pH/ORP Sensors All digital sensors include built-in digital electronics and integral 10 m (33 ft.) cable terminated with connector for the sc100 digital controller. Body styles: • Convertible – 1-inch NPT threads at both ends, designed for tee-mounting or other flow through mountings, and pipe mounting for immersion • Insertion – no threads on the electrode end, designed for use with insertion valve assembly • Sanitary – 2-inch flange for a tri-clover style fitting • Immersion – used with chain mounting or pipe mounting pH Sensors Product Number Body Material Body Style Electrode Material Max Temp DPD1P1 PEEK1 Convertible Glass, General Purpose 70ºC (158ºF) DPD1P3 PEEK1 Convertible Glass, HF-resistant 70ºC (158ºF) DPD2P1 PEEK1 Insertion Glass, General Purpose 70ºC (158ºF) DPD3P1 PEEK1 Sanitary Glass, General Purpose 70ºC (158ºF) DPD1R1 Ryton2 Convertible Glass, General Purpose 70ºC (158ºF) DPD1R3 Ryton2 Convertible Glass, HF-resistant 70ºC (158ºF) DPS1 Stainless Steel Immersion Glass, General Purpose 50ºC (122ºF) 1Polyetheretherketone 2Polyphenelene Sulfide ORP Sensors Product Number Body Material Body Style Electrode Material Max Temp DRD1P5 PEEK1 Convertible Platinum 70ºC (158ºF) DRD1P6 PEEK1 Convertible Gold 70ºC (158ºF) DRD2P5 PEEK1 Insertion Platinum 70ºC (158ºF) DRD1R5 Ryton2 Convertible Platinum 70ºC (158ºF) DRD1R6 Ryton2 Convertible Gold 70ºC (158ºF) DRS5 Stainless Steel Immersion Platinum 50ºC (122ºF) 1Polyetheretherketone 2Polyphenelene Sulfide Digital Gateway 6120500 Digital Gateway, convert pHD analog sensors to digital output for connecting to sc100 digital controller pHD Analog Sensors All analog sensors include built-in preamplifier and integral 4.5 m (15 ft.) cable terminated with stripped and tinned wires. Definitions of body styles: • Convertible – 1-inch NPT threads at both ends, designed for tee-mounting or other flow through mountings, and pipe mounting for immersion • Insertion – has no threads on the electrode end, designed for use with insertion valve assembly • Sanitary – has a 2-inch flange for a Tri-Clover style fitting pH Sensors Product Number Body Material Body Style Electrode Material Max Temp PD1P1 PEEK1 Convertible Glass, General Purpose 95ºC (203ºF) PD1P3 PEEK1 Convertible Glass, HF-resistant 95ºC (203ºF) PD2P1 PEEK1 Insertion Glass, General Purpose 95ºC (203ºF) PD3P1 PEEK1 Sanitary Glass, General Purpose 95ºC (203ºF) PD1R1 Ryton2 Convertible Glass, General Purpose 95ºC (203ºF) PD1R3 Ryton2 Convertible Glass, HF-resistant 95ºC (203ºF) 1Polyetheretherketone 2Polyphenelene Sulfide ORP Sensors Product Number Body Material Body Style Electrode Material Max Temp RD1P5 PEEK1 Convertible Platinum 95ºC (203ºF) RD1P6 PEEK1 Convertible Gold 95ºC (203ºF) RD2P5 PEEK1 Insertion Platinum 95ºC (203ºF) RD1R5 Ryton2 Convertible Platinum 95ºC (203ºF) RD1R6 Ryton2 Convertible Gold 95ºC (203ºF) 1Polyetheretherketone 2Polyphenelene Sulfide 6 Ordering Information continued pHD sc Digital and pHD Analog Sensor Accessories Cables Extension cables are used only with digital sensors or digital gateways when connecting to the sc100 Digital Controller. 61224-00 Digital Extension Cable, 1 m (3.2 ft.) 57960-00 Digital Extension Cable, 7.7 m (25 ft.) 57961-00 Digital Extension Cable, 15 m (50 ft.) 57962-00 Digital Extension Cable, 31 m (100 ft.) Interconnect cables are used only with analog sensors, junction box, and controller. 1W11-00 Analog Interconnect Cable, order per foot Digital Termination Box Required when the length of cable between the digital sensor/digital gateway and sc100 Digital Controller is between 100 m (328 ft.) and 1000 m (3280 ft.) 58670-00 Digital Termination Box Analog Junction Box Required when the length of cable between the analog sensor and analog controller is greater than standard length of sensor cable. Each junction box includes terminal strip and gasket. 60A2053 Junction Box, Surface-mount, aluminum (includes mounting hardware) 60A9944 Junction Box, Pipe-mount, PVC (for 1/2-inch diameter pipe, includes mounting hardware) 60G2052 Junction Box, Pipe-mount, PVC (for 1-inch diameter pipe, includes mounting hardware) 76A4010-001 Junction Box, NEMA 4X (no mounting hardware included) Protector for Convertible style sensor 1000F3374-002 PEEK protector 1000F3374-003 Ryton protector Salt Bridges The double junction salt bridge on the standard cell of all Hach pHD sensors is field-replaceable. Each salt bridge has a ceramic inner junction, Viton®O-ring, and contains binary, equi-transferrant fill solution. Salt bridges are shipped in a salt solution. Product pHD sc and pHD Number Sensor Body Material Salt Bridge Materials Body Outer Junction SB-P1SV PEEK PEEK Kynar (PVDF) SB-P2SV PEEK PEEK Ceramic SB-P1SP1 PEEK PEEK Kynar (PVDF) SB-R1SV Ryton Ryton Kynar (PVDF) 1Special perfluoroelastomer O-ring in place of the Viton®O-ring Cleaning Systems for pHD sc and pHD Sensors Self-Contained Air Blast Cleaning System Includes Kynar®(PVDF) washer head with 7.6 m (25 ft.) tubing for air delivery, a quick-disconnect tube fitting, and a compressor housed in a NEMA 4X enclosure. 1000A3335-005 For 115 VAC operation 1000A3335-006 For 230 VAC operation Air/Water Blast Cleaning Washer Head Intended only for immersion applications with a user-supplied air or water wash system. 1000A3335-004 Kynar (PVDF) washer head includes 1/4-inch barb fitting pHD sc Digital and pHD Analog Sensor Reagents and Standards 25M1A1025-115 Standard Cell Solution, to replenish standard cell chamber in Hach pHD sensors while replacing salt bridge, 500 mL 25M8A1002-101 Gel Powder, for high temperature applications, 2 g pH Buffers Product Number Description Volume 22835-49 pH 7 500 mL (1 pint) 22834-49 pH 4 500 mL (1 pint) 22836-49 pH 10 500 mL (1 pint) ORP Reference Solutions (in resealable plastic bottles) Product Number Description Volume 25M2A1001-115 200 mV 500 mL (1 pint) 25M2A1002-115 600 mV 500 mL (1 pint) 7 Ordering Information continued Sanitary Mount MH018S8SZ 316 SS Includes 2-inch sanitary tee and heavy-duty clamp. Special cap and EPDM compound gasket are supplied with sensor but can be separately ordered. Union Mount 61313-00 CPVC 61314-00 316 SS Includes standard 1-1/2 inch tee, special union pipe with adapter, sealing hub, and lock ring in respective material, and Viton®O-ring. Flow-through Mount MH334N4NZ CPVC MH314N4MZ 316 SS Includes a standard 1-inch tee in respective material. Insertion Mount Digital Analog 61367-00 CPVC MH736M4MZ CPVC 61368-00 316 SS MH716M4MZ 316 SS Includes a 1-1/2 inch ball valve in respective material, 1-1/2 inch NPT close nipple, sensor adapter with two Viton® O-rings and wiper, extension pipe, pipe adapter, back tube, and lock ring. Immersion Mount Standard Hardware Digital Analog 61364-00 CPVC MH434A00B CPVC 61365-00 316 SS MH414A00B 316 SS Includes 1-inch diameter by 4 ft. long pipe and 1-inch x 1-inch NPT coupling in respective material. (Pipe-mount junction box with terminal strip included in analog hardware.) Handrail Hardware MH236B00Z CPVC Includes 1-1/2 inch diameter by 7.5 ft. long CPVC pipe, and a unique swivel/pivot/ pipe clamp assembly. Chain Mount Hardware 2881900 316 ss Includes stainless steel bail, nuts, and washers. Does not include chain. To be used with stainless steel immersion sensor only. NOTE Contact Hach Technical Support or your Hach representative for information about retro fit hardware for existing installations. Mounting Hardware for pHD sc Differential Sensors 1. Sanitary mount 2. Union mount 3. Flow-through mount 4. Hanging stainless steel sensor with the bail 5. PVC Insertion mount 6. Stainless steel insertion mount 7. Immersion mount 8. Immersion mount, ball float Lit. No. 2467 XXXX Printed in U.S.A. ©Hach Company, 2004. 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. For current price information, technical support, and ordering assistance, contact the Hach office or distributor serving your area. In the United States, contact: HACH COMPANY World Headquarters P.O. Box 389 Loveland, Colorado 80539-0389 U.S.A. Telephone: 800-227-4224 Fax: 970-669-2932 E-mail: orders@hach.com www.hach.com U.S. exporters and customers in Canada, Latin America, sub-Saharan Africa, Asia, and Australia/New Zealand, contact: HACH COMPANY World Headquarters P.O. Box 389 Loveland, Colorado 80539-0389 U.S.A. Telephone: 970-669-3050 Fax: 970-461-3939 E-mail: intl@hach.com www.hach.com In Europe, the Middle East, and Mediterranean Africa, contact: HACH + LANGE Europe Dr. Bruno Lange GmbH & Co. KG Willstätterstraße 11 D-40549 Düsseldorf GERMANY Tel: +49 (0) 211 5288-0 Fax: +49 (0) 211 5288-143 E-mail: kundenservice@drlange.de www.drlange.com At Hach, it’s about learning from our customers and providing the right answers. It’s more than ensuring the quality of water—it’s about ensuring the quality of life. When it comes to the things that touch our lives... Keep it pure. Make it simple. Be right. 8 To complete your pH and ORP measurement system, choose the sc100 Controller... Model sc100 Controller (see Lit. #2463) There’s no complicated wiring or set up procedures with the Hach sc100 controller. Just plug in any Hach digital sensor and it’s ready to use—it’s “plug and play” with one or two sensors. A built-in data logger collects measurements at user selectable intervals of one to 15 minutes. Local display, recall, graphing and trending in CSV format make chart recorders redundant. No analog/digital conversion is required—it communicates via MODBUS®or IR port. Two PID controllers and three form ‘C’ relay contacts for alarm or control are available. LXV401.52.00002 sc100 Controller Standard LXV401.52.01002 sc100 Controller with RS-232 MODBUS® LXV401.52.02002 sc100 Controller with RS-485 MODBUS®