{"id":1760,"date":"2024-10-11T09:53:40","date_gmt":"2024-10-11T08:53:40","guid":{"rendered":"http:\/\/guemisa.es\/?post_type=documentos-pdf&#038;p=1760"},"modified":"2026-11-03T13:41:34","modified_gmt":"2026-11-03T12:41:34","slug":"news","status":"publish","type":"documentos-pdf","link":"https:\/\/guemisa.es\/en\/documentos-pdf\/novedades\/","title":{"rendered":"B&amp;C Electronics Liquid Analyzers: Controllers and Sensors"},"content":{"rendered":"<div class=\"gm-doc gm-m-bc\">\n<p class=\"k\">Catalog \u00b7 B&amp;C Electronics<\/p>\n<div class=\"meta\"><span>pH-ORP<\/span><span>Conductivity-TDS<\/span><span>Dissolved oxygen<\/span><span>Turbidity 4,000 to 4000 NTU<\/span><span>Probes up to 350 m<\/span><\/div>\n<div class=\"resp\"><b class=\"t\">Quick response<\/b>The 13-page B&amp;C Electronics catalog covers liquid analyzers for pH-ORP, conductivity-TDS, dissolved oxygen, turbidity-TSS, nitrates, chlorine, chlorine dioxide, ozone, hydrogen peroxide-PAA, ammonia, and sulfite-sulfide. It includes panel, wall, and DIN rail controllers (6587, 7685, 7635, 3436, 7335, 7687 series), 3630 transmitters, the 135 handheld meter, UV probes, and 8000 multiparameter probes (up to <b>350 meters<\/b> depth) and sensors for pH, conductivity, turbidity, chlorine and dissolved oxygen.<\/div>\n<h2>Parameters and applications<\/h2>\n<ul><li>pH \u2013 ORP<\/li><li>Conductivity \u2013 TDS<\/li><li>Dissolved oxygen, including optical fluorescence control<\/li><li>Turbidity \u2013 TSS<\/li><li>Nitrates \u2013 SAC \u2013 free UV spectrometry<\/li><li>Combined residual chlorine<\/li><li>Total chlorine in gas phase<\/li><li>Chlorine dioxide<\/li><li>Dissolved ozone<\/li><li>Hydrogen peroxide \u2013 PAA<\/li><li>Dissolved ammonia<\/li><li>Sulfite \u2013 dissolved sulfide<\/li><\/ul>\n<p>Applications cited: water treatment and purification, drinking water treatment, aquaculture, biotechnology, chemical industry, electroplating, environmental monitoring, fertigation, food industry, geology, laboratory, pulp and paper, pharmaceutical industry, detection and security, graphic arts, surface treatment, swimming pools, textile industry, groundwater monitoring, and research and development. OEM and customized versions are available.<\/p>\n<h2>Controllers and transmitters<\/h2>\n<div class=\"tw\"><table><thead><tr><th>Range<\/th><th>Facility<\/th><th>Parameters<\/th><th>Feeding<\/th><th>Dimensions<\/th><\/tr><\/thead><tbody><tr><td>6587<\/td><td>Wall mountable, IP 65; ABS enclosure with polycarbonate front panel<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 temperature \u2013 residual chlorine \u2013 dissolved ozone \u2013 chlorine dioxide; up to 3 analog sensor inputs or 4\u202620 mA probes<\/td><td>85 \u2013 264 Vac; optional 9-36 Vdc or 24 Vac<\/td><td>256 x 213 x 74 mm<\/td><\/tr><tr><td>7685<\/td><td>96x96 Panel<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 dissolved oxygen \u2013 residual chlorine \u2013 dissolved ozone \u2013 chlorine dioxide \u2013 turbidity \u2013 dissolved sulfite\/sulfide<\/td><td>110\/220 Vac<\/td><td>96 x 96 x 155 mm<\/td><\/tr><tr><td>7635<\/td><td>96x96 panel; 95mm deep aluminum casing; red LED display<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 dissolved oxygen \u2013 residual chlorine \u2013 dissolved ozone; signal inputs \u00b14\u202620 mA<\/td><td>85 \u2013 264 Vac; optional 9 \u2013 36 Vdc or 24 Vac<\/td><td>96 x 96 x 95 mm<\/td><\/tr><tr><td>3436<\/td><td>DIN rail; alphanumeric LCD display; block-removable terminals<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 temperature \u2013 residual chlorine \u2013 dissolved ozone; automatic or manual RTD Pt100 temperature compensation<\/td><td>9 \u2013 36 Vdc<\/td><td>71 x 95 x 58 mm (4 modules)<\/td><\/tr><tr><td>7335<\/td><td>96\u00d748 panel; 95 mm deep aluminum casing; red LED display<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 dissolved oxygen \u2013 residual chlorine \u2013 dissolved ozone; signal inputs \u00b14\u202620 mA<\/td><td>85 \u2013 264 Vac; optional 9 \u2013 36 Vdc or 24 Vac<\/td><td>96 x 48 x 95 mm<\/td><\/tr><tr><td>7687<\/td><td>Panel, IP 65; water-resistant keypad; aluminum housing<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 dissolved oxygen \u2013 residual chlorine \u2013 dissolved ozone \u2013 chlorine dioxide \u2013 turbidity \u2013 dissolved sulfite\/sulfide; inputs \u00b14\u202620 mA<\/td><td>85 \u2013 264 Vac; optional 9 \u2013 36 Vdc or 24 Vac<\/td><td>96 x 96 x 95 mm<\/td><\/tr><tr><td>3630 (transmitter)<\/td><td>DIN rail; two wires 4\u202620 mA; closed-loop isolated output; RTD Pt100 temperature compensation; LCD display<\/td><td>pH \u2013 ORP \u2013 conductivity \u2013 dissolved oxygen \u2013 residual chlorine \u2013 dissolved ozone<\/td><td>10 \u2013 30 Vdc<\/td><td>105 x 95 x 58 mm (6 modules); 200 g<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"tw\"><table><thead><tr><th>Range<\/th><th>Functions and outputs<\/th><\/tr><\/thead><tbody><tr><td>6587<\/td><td>Integrated data logger and USB port; backlit graphic display; RS 485 communication; two selectable On-Off relays, PID (PWM-PFM) functions; high or low value alarm relay and delay; adjustable self-cleaning relay; dual programmable 0\/4\u202620 mA analog output<\/td><\/tr><tr><td>7685<\/td><td>Two selectable On-Off relays, PWM-PFM functions; high or low value alarm relay with delay; self-cleaning relay; dual programmable 0\/4\u202620 mA analog output<\/td><\/tr><tr><td>7635 and 7335<\/td><td>Two selectable On-Off relays; alarm relay with adjustable high-low values and delay; sliding short messages on screen<\/td><\/tr><tr><td>3436<\/td><td>Isolated 4\u202620 mA analog output; isolated RS 485 ASCII Modbus digital output; 1000 V input-to-output isolation<\/td><\/tr><tr><td>7687<\/td><td>Integrated data logger and USB port; backlit graphic display; RS 485; two On-Off relays, PID functions (PWM-PFM); alarm relay; self-cleaning relay; dual programmable 0\/4\u202620 mA analog output<\/td><\/tr><tr><td>3630<\/td><td>500V input-to-output isolation; block-removable terminals<\/td><\/tr><\/tbody><\/table><\/div>\n<div class=\"figs\"><figure><a href=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p7-1.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p7-1.png\" alt=\"6587 series controller for wall mounting\" loading=\"lazy\"><\/a><figcaption>6587 series controller for wall mounting<\/figcaption><\/figure><figure><a href=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p8-2.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p8-2.png\" alt=\"7687 Series Controller for Panel\" loading=\"lazy\"><\/a><figcaption>7687 Series Controller for Panel<\/figcaption><\/figure><\/div>\n<h2>Portable meters and online analyzers<\/h2>\n<p>The 135 range portable meter is a system with a microprocessor, long battery life, alphanumeric LCD display and recording of up to 100 measurements.<\/p>\n<div class=\"tw\"><table><thead><tr><th>Gamma 135: parameter<\/th><th>Range<\/th><\/tr><\/thead><tbody><tr><td>pH<\/td><td>-1,00 \/ 15,00<\/td><\/tr><tr><td>ORP<\/td><td>-1200 \/ 1200 mV<\/td><\/tr><tr><td>Conductivity (5 selectable scales)<\/td><td>20.00; 200.0; 2000 \u00b5S; 20.00; 200.0mS<\/td><\/tr><tr><td>TDS (5 selectable scales)<\/td><td>10.00; 100.0; 1000ppm; 10.00; 100.0 ppt<\/td><\/tr><tr><td>Temperature<\/td><td>-10.0 \/ 110.0 \u00b0C and 32.0 \/ 212.0 \u00b0F<\/td><\/tr><\/tbody><\/table><\/div>\n<figure><a href=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p9-1.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p9-1.png\" alt=\"Portable meter from the 135 range\" loading=\"lazy\"><\/a><figcaption>Portable meter from the 135 range<\/figcaption><\/figure>\n<p>Online chemical analysis module analyzers (ISE and polarographic), designed for the 7685 and 7687 series controllers, with gas-phase, ion-specific, and polarographic membrane analyzers, and Auto Cal functions for the ISE analyzers. 110\/220 Vac power supply.<\/p>\n<div class=\"tw\"><table><thead><tr><th>Extent<\/th><th>Scales<\/th><\/tr><\/thead><tbody><tr><td>Total chlorine, gas phase<\/td><td>2,000 \/ 20,00 ppm Cl2<\/td><\/tr><tr><td>Total chlorine, liquid phase, iodometric<\/td><td>2,000 \/ 20,00 \/ 200,0 ppm Cl2<\/td><\/tr><tr><td>Sulfite\/sulfide, gas phase<\/td><td>2,000 \/ 20,00 ppm SO3- \/ S2-<\/td><\/tr><tr><td>ISE-specific electrodes<\/td><td>NO3- \/ NH4+ \/ Cl- \/ F- \/ Ca2+ \/ Ca2+ Mg2+<\/td><\/tr><\/tbody><\/table><\/div>\n<h2>UV, digital and multiparameter probes<\/h2>\n<div class=\"tw\"><table><thead><tr><th>Product<\/th><th>Characteristics<\/th><th>Technical data<\/th><\/tr><\/thead><tbody><tr><td>UV probes for nitrate, nitric nitrogen and SAC<\/td><td>Wideband spectrometric analyzer; isolated 4\u202620 mA and RS 485 output; self-cleaning optical path; automatic sampling turbidity and organic matter compensation<\/td><td>Scales (NO2-) (NO3-) \u2013 N: 2.50 \/ 25.0 \/ 250 mg\/l; NO3- scales: 10.00 \/ 100.0 \/ 1,000 mg\/l; sensitivity 0.01 mg\/l; power supply 11 \u2013 36 Vdc<\/td><\/tr><tr><td>Digital-analog probes<\/td><td>Isolated 4\u202620 mA and RS 485 output; all-in-one devices; configuration via RS 485 \/ USB interface; immersion with self-cleaning or on pipe, with fixed cable or 7-pin DL connector<\/td><td>Parameters: conductivity (analog only), turbidity, suspended solids, dissolved oxygen (optical); power supply 9 \u2013 36 Vdc; length 165 mm; diameter 60 mm; standard cable 10 m (max. 100 m)<\/td><\/tr><tr><td>Multiparameter probes, 8000 range<\/td><td>Continuous monitoring; models with internal data logging and rechargeable batteries; OEM models for external loggers; ASCII digital communication or Modbus protocol; depth limit up to 350 meters<\/td><td>Standard: level, temperature, conductivity, pH, ORP, dissolved oxygen (optical or polarographic); optional: turbidity, chlorine ISE, ammonium ISE, nitrate ISE; internal power supply 2.7 \u2013 4.8 Vdc or external 12 Vdc, max. 60 mA; length 510 mm, diameter 70 mm or 44.5 mm; max. weight 2 kg<\/td><\/tr><\/tbody><\/table><\/div>\n<h2>pH, conductivity, turbidity, chlorine and dissolved oxygen sensors<\/h2>\n<div class=\"tw\"><table><thead><tr><th>Sensor<\/th><th>Construction and technical data<\/th><\/tr><\/thead><tbody><tr><td>pH\/ORP\/ISE<\/td><td>Body in glass or epoxy; gel type with double annular joint reference; temperature from -20 \u00b0C to 125 \u00b0C; sterilizable by steam or autoclave; standard length 110 mm and diameter 12 mm; fixed cable of 1.5 m with BNC or 9 m without connector; detachable DL \/ S7 \/ S8 (PG 13.5) connections; pressure up to 10 Bar for pipe insertion<\/td><\/tr><tr><td>Conductivity of two and four electrodes<\/td><td>Body in PVC, PP, PVDF, PEEK, PES and stainless steel; models up to 125 \u00b0C; cell constant K from 0.01 to 10 cm-1; built-in RTDs Pt 100 \/ Pt 1000 \/ NTC 10K; fixed 1.5 m cable with BNC or 9 m without connector; threaded connection \u00bd\u201d \u2013 1\u201d BSP \u2013 \u00bd\u201d BSP \u2013 \u00be\u201d MNPT, tapered DIN 11851-52 or sanitary triple clamp 2\u201d<\/td><\/tr><tr><td>Toroidal conductivity<\/td><td>PVC-C and PVDF body; built-in 4\u202620 mA 2-wire transmitter; K = 1 cm-1 with local amplifier or K = 7 cm-1 without amplifier; Pt 100 RTD; 1 \u00bd\u201d MNPT BSP threaded connection for DN40 pipe or DIN 11851-52 tapered connection; designs for multi-position control in cooling towers<\/td><\/tr><tr><td>Turbidity-SS<\/td><td>Self-cleaning nephelometric method; PVC and PVDF body; 4,000 \/ 40,000 \/ 400,000 \/ 4,000 NTU scales; infrared (ISO 7027) or solid-state tungsten (USEPA 180.1) optical source; empty cell or dirty lens diagnostics; self-cleaning with external compressed air, max. 3 BAR; 10 m or 30 m cable (optional up to 100 m); 7-pin in-line DL connector<\/td><\/tr><tr><td>Cl2 \/ ClO2 \/ DO3 \/ H2O2<\/td><td>Potentiostatic and polarographic; body in glass, epoxy, or PVDF; free residual chlorine and combined residual chlorine; Pt100 RTD; 3 m encapsulated cable without connector or 7.5 m detachable cable; potentiostatic cell 110 mm long and 12 mm in diameter; polarographic cell 60 mm and 33 mm (wet part)<\/td><\/tr><tr><td>Dissolved oxygen<\/td><td>Optical (fluorescence quenching), with galvanic or polarographic membrane, with self-cleaning; PVC or PVDF body; Pt100 RTD; self-cleaning with external compressed air, max. 3 BAR; 10 m encapsulated cable without connector (optional up to 100 m) or 7.5 m detachable cable; replaceable membranes and sensor elements<\/td><\/tr><\/tbody><\/table><\/div>\n<figure><a href=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p12-4.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/guemisa.es\/wp-content\/uploads\/2026\/11\/novedades-figura-p12-4.png\" alt=\"Sensor in flow assembly (page 12 of the catalog)\" loading=\"lazy\"><\/a><figcaption>Sensor in flow assembly (page 12 of the catalog)<\/figcaption><\/figure>\n<h2>Company and certification<\/h2>\n<div class=\"tw\"><table><thead><tr><th>Fact<\/th><th>Worth<\/th><\/tr><\/thead><tbody><tr><td>Foundation<\/td><td>1974, to manufacture water analysis equipment and industrial process control<\/td><\/tr><tr><td>Certification<\/td><td>ISO 9001 in 1998, by CISQ-IQNET<\/td><\/tr><tr><td>Quality model<\/td><td>Total Quality and the EFQM model<\/td><\/tr><tr><td>Product testing<\/td><td>All products are tested and calibrated at the factory before shipment<\/td><\/tr><tr><td>Presence<\/td><td>Local distributors and customers in major countries across 5 continents<\/td><\/tr><\/tbody><\/table><\/div>\n<h2>Frequently Asked Questions<\/h2><details class=\"faq\"><summary>What parameters do B&amp;C Electronics analyzers measure?<\/summary><p>pH-ORP, conductivity-TDS, dissolved oxygen, turbidity-TSS, nitrates-SAC, residual and total chlorine, chlorine dioxide, dissolved ozone, hydrogen peroxide-PAA, ammonia and sulfite-sulfide.<\/p><\/details><details class=\"faq\"><summary>What ranges of controllers does the catalog include?<\/summary><p>6587 wall mount, 7685, 7635 and 7687 96\u00d796 panel mount, 7335 96\u00d748 panel mount and 3436 DIN rail mount, plus the 3630 DIN rail transmitter.<\/p><\/details><details class=\"faq\"><summary>What turbidity scales does the Turbidity-SS sensor have?<\/summary><p>4,000 \/ 40,00 \/ 400,0 \/ 4000 NTU, with infrared (ISO 7027) or solid-state tungsten (USEPA180.1) source.<\/p><\/details><details class=\"faq\"><summary>How deep can the 8000 series multiparameter probes reach?<\/summary><p>Up to 350 meters, with ASCII digital communication or Modbus protocol.<\/p><\/details><details class=\"faq\"><summary>What pH range does the 135 series portable meter measure?<\/summary><p>From -1.00 to 15.00 pH, with ORP from -1200 to 1200 mV and temperature from -10.0 to 110.0 \u00b0C.<\/p><\/details><details class=\"faq\"><summary>What power supply do the 7687 controllers require?<\/summary><p>85 \u2013 264 Vac, with option of 9 \u2013 36 Vdc or 24 Vac.<\/p><\/details>\n<h2>Related<\/h2><ul class=\"rel\"><li><a href=\"https:\/\/guemisa.es\/en\/brand\/bc-electronics\/\">B&amp;C Electronics<\/a><\/li><li><a href=\"https:\/\/guemisa.es\/en\/pdf-documents\/complete-bc-catalogue\/\">B&amp;C Electronics Analyzer Catalogue<\/a><\/li><li><a href=\"https:\/\/guemisa.es\/en\/category\/water-quality\/\">Water quality<\/a><\/li><li><a href=\"https:\/\/guemisa.es\/en\/pdf-documents\/what-is-turbidity\/\">Water turbidity: what it is and how it is measured<\/a><\/li><li><a href=\"https:\/\/guemisa.es\/en\/pdf-documents\/what-is-dissolved-oxygen-2\/\">Dissolved oxygen: what it is and how it is measured<\/a><\/li><li><a href=\"https:\/\/guemisa.es\/en\/technical-information\/\">All technical information about GUEMISA<\/a><\/li><\/ul>\n<p class=\"pdf-fin\">Below, the original PDF document is available for viewing or 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