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{"id":2031647429,"title":"HANNA HI 8720 Panel Mounted Dual Setpoint - ORP analog Controller with 4 to 20mA","handle":"hi8720","description":"\u003cp\u003eInputs: BNC connector.  Direct wire connection with amplified probe (supports HI 1006 series probes) and 4-20 mA from a transmitter\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelectable manual ON. OFF and automatic dosing control for alkaline. acid and REDOX dosing with indicator\u003c\/li\u003e\n\u003cli\u003eAuto-diagnostic test for instrument status troubleshooting\u003c\/li\u003e\n\u003cli\u003eOperational mode LED indicators\u003c\/li\u003e\n\u003cli\u003eSupports potential matching pin connection\u003c\/li\u003e\n\u003cli\u003eBoth 4-20 and 0-20 mA output    \u003c\/li\u003e\n\u003cli\u003e±5V outputs for amplified electrodes\u003c\/li\u003e\n\u003cli\u003eBacklit LCD\u003c\/li\u003e\n\u003cli\u003eTransparent splash-proof cover\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis instrument allows the selection of a set point for oxidizing or reducing dosage.\u003c\/p\u003e\n\u003cp\u003eWhen used in conjunction with the HI 8710 pH controller. the ODCD (ORP dosing consent device) function (featured by the HI 8710) will ensure that the ORP dosage will start only when the pH level \u003cbr\u003e is correct.\u003c\/p\u003e\n\u003cp\u003eThese instruments have been designed for easy and fast installation and are provided with membrane keypads on the front panel. large display. and autodiagnostic functions.\u003c\/p\u003e\n\u003cp\u003eEach model accepts either a direct input from an ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes.\u003c\/p\u003e\n\u003cp\u003eMoreover. you can choose the output configuration for connecting a recorder or a PLC. between 0-20 or 4-20 mA.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e The HI 8720 is supplied complete with mounting brackets and instructions.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cimg src=\"http:\/\/www.hannainst.com\/usa\/images\/icon-pdf.gif\" alt=\"\" width=\"20\" height=\"22\" align=\"absmiddle\" border=\"0\"\u003e  Manual: \u003ca title=\"Download Product Manual\" href=\"http:\/\/www.hannainst.com\/manuals\/man8711_09_09.pdf\" target=\"_blank\"\u003eDownload\u003c\/a\u003e\n\u003c\/div\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\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±1999 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003cbr\u003e@ 20 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±5 mV; ±0.5% (input from transmitter)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003ehigh impedance 10\u003csup\u003e12\u003c\/sup\u003e Ohm; reference and matching pin inputs are available; 4-20 mA\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±5 Vcc; 150 mA max load for amplified electrodes\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eoffset: ±200 mV with CAL trimmer\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e0-20 mA or 4-20 mA (isolated)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetpoint Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetpoint Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±1999 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e10 to 300 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosing Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eOFF\/AUTO\/ON with selection switch\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Dosing Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eadjustable. from 5 min to 60 min with knob or disable by wire strap - on rear panel\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBacklight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003econtinuous on\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e115 VAC ±10% or 230 VAC ±10%; 50\/60 Hz\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eflame retardant ABS body and front panel; transparent splash-proof front cover\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e-10 to 50°C (14 to 122°F); RH max 95% non-condensing\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePanel Cutout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e141 x 69 mm (5.6 x 2.7’’)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1 kg (2.2 lb.)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2026-06-25T15:05:59+12:00","created_at":"2015-09-07T15:18:55+12:00","vendor":"Hanna Instruments","type":"Electrochemical","tags":["Manufacturer_Hanna Instruments","Type_pH \u0026 ORP Meters"],"price":95950,"price_min":95950,"price_max":95950,"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":5832222213,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HI8720","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"HANNA HI 8720 Panel Mounted Dual Setpoint - ORP analog Controller with 4 to 20mA","public_title":null,"options":["Default Title"],"price":95950,"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\/hi8711_400-1_2015.jpeg?v=1443495677","\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-side520a4f52c1d9c_2015_9118e258-83cd-4b8a-9302-4a0aaf99139f.png?v=1443495677","\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-frnt520a4f561961b_2015_8631a9dd-ee2c-4515-87f3-3aca8839c11b.png?v=1443495677"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/hi8711_400-1_2015.jpeg?v=1443495677","options":["Title"],"media":[{"alt":null,"id":25255018595,"position":1,"preview_image":{"aspect_ratio":1.0,"height":400,"width":400,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/hi8711_400-1_2015.jpeg?v=1443495677"},"aspect_ratio":1.0,"height":400,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/hi8711_400-1_2015.jpeg?v=1443495677","width":400},{"alt":null,"id":25255051363,"position":2,"preview_image":{"aspect_ratio":0.924,"height":503,"width":465,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-side520a4f52c1d9c_2015_9118e258-83cd-4b8a-9302-4a0aaf99139f.png?v=1443495677"},"aspect_ratio":0.924,"height":503,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-side520a4f52c1d9c_2015_9118e258-83cd-4b8a-9302-4a0aaf99139f.png?v=1443495677","width":465},{"alt":null,"id":25255084131,"position":3,"preview_image":{"aspect_ratio":0.808,"height":442,"width":357,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-frnt520a4f561961b_2015_8631a9dd-ee2c-4515-87f3-3aca8839c11b.png?v=1443495677"},"aspect_ratio":0.808,"height":442,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-frnt520a4f561961b_2015_8631a9dd-ee2c-4515-87f3-3aca8839c11b.png?v=1443495677","width":357}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eInputs: BNC connector.  Direct wire connection with amplified probe (supports HI 1006 series probes) and 4-20 mA from a transmitter\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelectable manual ON. OFF and automatic dosing control for alkaline. acid and REDOX dosing with indicator\u003c\/li\u003e\n\u003cli\u003eAuto-diagnostic test for instrument status troubleshooting\u003c\/li\u003e\n\u003cli\u003eOperational mode LED indicators\u003c\/li\u003e\n\u003cli\u003eSupports potential matching pin connection\u003c\/li\u003e\n\u003cli\u003eBoth 4-20 and 0-20 mA output    \u003c\/li\u003e\n\u003cli\u003e±5V outputs for amplified electrodes\u003c\/li\u003e\n\u003cli\u003eBacklit LCD\u003c\/li\u003e\n\u003cli\u003eTransparent splash-proof cover\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis instrument allows the selection of a set point for oxidizing or reducing dosage.\u003c\/p\u003e\n\u003cp\u003eWhen used in conjunction with the HI 8710 pH controller. the ODCD (ORP dosing consent device) function (featured by the HI 8710) will ensure that the ORP dosage will start only when the pH level \u003cbr\u003e is correct.\u003c\/p\u003e\n\u003cp\u003eThese instruments have been designed for easy and fast installation and are provided with membrane keypads on the front panel. large display. and autodiagnostic functions.\u003c\/p\u003e\n\u003cp\u003eEach model accepts either a direct input from an ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes.\u003c\/p\u003e\n\u003cp\u003eMoreover. you can choose the output configuration for connecting a recorder or a PLC. between 0-20 or 4-20 mA.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e The HI 8720 is supplied complete with mounting brackets and instructions.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cimg src=\"http:\/\/www.hannainst.com\/usa\/images\/icon-pdf.gif\" alt=\"\" width=\"20\" height=\"22\" align=\"absmiddle\" border=\"0\"\u003e  Manual: \u003ca title=\"Download Product Manual\" href=\"http:\/\/www.hannainst.com\/manuals\/man8711_09_09.pdf\" target=\"_blank\"\u003eDownload\u003c\/a\u003e\n\u003c\/div\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\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±1999 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003cbr\u003e@ 20 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±5 mV; ±0.5% (input from transmitter)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003ehigh impedance 10\u003csup\u003e12\u003c\/sup\u003e Ohm; reference and matching pin inputs are available; 4-20 mA\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±5 Vcc; 150 mA max load for amplified electrodes\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eoffset: ±200 mV with CAL trimmer\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e0-20 mA or 4-20 mA (isolated)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetpoint Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetpoint Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e±1999 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e10 to 300 mV\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosing Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eOFF\/AUTO\/ON with selection switch\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Dosing Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eadjustable. from 5 min to 60 min with knob or disable by wire strap - on rear panel\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBacklight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003econtinuous on\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e115 VAC ±10% or 230 VAC ±10%; 50\/60 Hz\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003eflame retardant ABS body and front panel; transparent splash-proof front cover\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e-10 to 50°C (14 to 122°F); RH max 95% non-condensing\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePanel Cutout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e141 x 69 mm (5.6 x 2.7’’)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e1 kg (2.2 lb.)\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e"}

HANNA HI 8720 Panel Mounted Dual Setpoint - ORP analog Controller with 4 to 20mA

Product Description

Inputs: BNC connector.  Direct wire connection with amplified probe (supports HI 1006 series probes) and 4-20 mA from a transmitter

  • Selectable manual ON. OFF and automatic dosing control for alkaline. acid and REDOX dosing with indicator
  • Auto-diagnostic test for instrument status troubleshooting
  • Operational mode LED indicators
  • Supports potential matching pin connection
  • Both 4-20 and 0-20 mA output    
  • ±5V outputs for amplified electrodes
  • Backlit LCD
  • Transparent splash-proof cover

 

This instrument allows the selection of a set point for oxidizing or reducing dosage.

When used in conjunction with the HI 8710 pH controller. the ODCD (ORP dosing consent device) function (featured by the HI 8710) will ensure that the ORP dosage will start only when the pH level
is correct.

These instruments have been designed for easy and fast installation and are provided with membrane keypads on the front panel. large display. and autodiagnostic functions.

Each model accepts either a direct input from an ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes.

Moreover. you can choose the output configuration for connecting a recorder or a PLC. between 0-20 or 4-20 mA.

 

Order Information:
The HI 8720 is supplied complete with mounting brackets and instructions.

Product Manuals
  Manual: Download

Specification :

Range   ±1999 mV
Resolution   1 mV
Accuracy
@ 20 °C
  ±5 mV; ±0.5% (input from transmitter)
Input   high impedance 1012 Ohm; reference and matching pin inputs are available; 4-20 mA
Power Output   ±5 Vcc; 150 mA max load for amplified electrodes
Calibration   offset: ±200 mV with CAL trimmer
Recorder Output   0-20 mA or 4-20 mA (isolated)
Setpoint Relay   1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)
Setpoint Range   ±1999 mV
Alarm Relay   1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)
Alarm Range   10 to 300 mV
Dosing Control   OFF/AUTO/ON with selection switch
Over Dosing Control   adjustable. from 5 min to 60 min with knob or disable by wire strap - on rear panel
Backlight   continuous on
Power Supply   115 VAC ±10% or 230 VAC ±10%; 50/60 Hz
Enclosure   flame retardant ABS body and front panel; transparent splash-proof front cover
Environment   -10 to 50°C (14 to 122°F); RH max 95% non-condensing
Panel Cutout   141 x 69 mm (5.6 x 2.7’’)
Weight   1 kg (2.2 lb.)

 

This product is available upon request. Contact us for more information.