{"id":1582152581,"title":"HANNA HI 2931B\/5 - AmpHel ORP Industrial Electrode","handle":"hi-2931b-5","description":"\u003cp\u003eAmpHel ORP electrode with platinum pin. PTFE junction and 5 m cable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStrong signal up to 75 meters (246’)\u003c\/li\u003e\n\u003cli\u003eLow noise coaxial cables are no longer required\u003c\/li\u003e\n\u003cli\u003eMeasurements in unclean samples and high humidity conditions\u003c\/li\u003e\n\u003cli\u003eModels with external replaceable battery. for longer electrode life\u003c\/li\u003e\n\u003cli\u003eGlass sensor for specific applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDue to the high resistance of the glass membrane. conventional electrodes require a high impedance measurement system. Inadequate insulation of the connectors and cables result in erroneous readings due to leakage or noise. For conventional electrodes. the lead is therefore limited to typically less than 15-20 meters. HANNA AmpHel® electrodes incorporate a miniaturized amplifier which resolves most of the problems associated with high impedance signals. The amplifier circuitry is located right on top of the electrode and is completely sealed. As a result. a strong. low impedance signal is emitted and ordinary connectors with long unshielded cables can be used. This breakthrough technology provides a stable signal for industrial monitoring as well as a major saving in low noise coaxial cable costs. In some cases. the need for a transmitter is also eliminated. resulting in further cost reductions.\u003c\/p\u003e\n\u003cp\u003eFor those applications that have been proven particularly hostile to electrodes. HANNA  has developed four types of specialized glass. First is an extremely durable sensor glass for general purpose and industrial use. This glass can withstand the stress of daily use. The remaining types of electrode glass allow continuous monitoring in highly acidic solutions containing fluoride ions. as well as high or low temperature process streams. without significantly reducing the useful life of the electrode.\u003c\/p\u003e\n\u003cp\u003eElectrode body material is glass or PEI. while the junction is cloth or PTFE.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification :\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003ePEI\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003ePTFE\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrolyte\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003egel\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlass Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eplatinum\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e-5 to 80°C\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e3 bar (43.5 psi)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eBNC\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e5 m\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003einternal\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","published_at":"2026-06-25T16:19:12+12:00","created_at":"2015-09-01T15:14:09+12:00","vendor":"Hanna Instruments","type":"Electrochemical","tags":["Manufacturer_Hanna Instruments","Type_Electrodes \u0026 Probes"],"price":29500,"price_min":29500,"price_max":29500,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":4857273349,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HI 2931B 5","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"HANNA HI 2931B\/5 - AmpHel ORP Industrial Electrode","public_title":null,"options":["Default Title"],"price":29500,"weight":0,"compare_at_price":null,"inventory_quantity":1,"inventory_management":null,"inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/acornsci.co.nz\/cdn\/shop\/products\/photometer-farbe-von-honig-bis-150-mm-pfund-1433_151e69b734cc15_2015_683b288d-315a-4e5f-b0c9-1b10e2aaa848.jpeg?v=1465536573"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/photometer-farbe-von-honig-bis-150-mm-pfund-1433_151e69b734cc15_2015_683b288d-315a-4e5f-b0c9-1b10e2aaa848.jpeg?v=1465536573","options":["Title"],"media":[{"alt":"HI 2931B\/5 - AmpHel ORP Industrial Electrode - Acorn Scientific","id":21295104099,"position":1,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/photometer-farbe-von-honig-bis-150-mm-pfund-1433_151e69b734cc15_2015_683b288d-315a-4e5f-b0c9-1b10e2aaa848.jpeg?v=1465536573"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/photometer-farbe-von-honig-bis-150-mm-pfund-1433_151e69b734cc15_2015_683b288d-315a-4e5f-b0c9-1b10e2aaa848.jpeg?v=1465536573","width":800}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eAmpHel ORP electrode with platinum pin. PTFE junction and 5 m cable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStrong signal up to 75 meters (246’)\u003c\/li\u003e\n\u003cli\u003eLow noise coaxial cables are no longer required\u003c\/li\u003e\n\u003cli\u003eMeasurements in unclean samples and high humidity conditions\u003c\/li\u003e\n\u003cli\u003eModels with external replaceable battery. for longer electrode life\u003c\/li\u003e\n\u003cli\u003eGlass sensor for specific applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDue to the high resistance of the glass membrane. conventional electrodes require a high impedance measurement system. Inadequate insulation of the connectors and cables result in erroneous readings due to leakage or noise. For conventional electrodes. the lead is therefore limited to typically less than 15-20 meters. HANNA AmpHel® electrodes incorporate a miniaturized amplifier which resolves most of the problems associated with high impedance signals. The amplifier circuitry is located right on top of the electrode and is completely sealed. As a result. a strong. low impedance signal is emitted and ordinary connectors with long unshielded cables can be used. This breakthrough technology provides a stable signal for industrial monitoring as well as a major saving in low noise coaxial cable costs. In some cases. the need for a transmitter is also eliminated. resulting in further cost reductions.\u003c\/p\u003e\n\u003cp\u003eFor those applications that have been proven particularly hostile to electrodes. HANNA  has developed four types of specialized glass. First is an extremely durable sensor glass for general purpose and industrial use. This glass can withstand the stress of daily use. The remaining types of electrode glass allow continuous monitoring in highly acidic solutions containing fluoride ions. as well as high or low temperature process streams. without significantly reducing the useful life of the electrode.\u003c\/p\u003e\n\u003cp\u003eElectrode body material is glass or PEI. while the junction is cloth or PTFE.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification :\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003ePEI\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003ePTFE\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrolyte\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003egel\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlass Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eplatinum\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e-5 to 80°C\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e3 bar (43.5 psi)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eBNC\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e5 m\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003einternal\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e"}