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{"id":2031644613,"title":"HANNA HI 8711 Panel Mounted pH Analog Controller with Dual Setpoint - with 4 to 20mA","handle":"hi8711","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\u003eAuto-diagnostics to verify offset and slope calibration and electrode contamination\/deterioration\u003c\/li\u003e\n\u003cli\u003eSelectable manual ON. OFF and automatic dosing control for alkaline. acid and REDOX dosing with indicator\u003c\/li\u003e\n\u003cli\u003eDual set point with two independent dosing outputs\u003c\/li\u003e\n\u003cli\u003eExtended temperature compensation range: -20 to 100°C\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\u003eFail Safe Function–the alarm relay is activated at power down\u003c\/li\u003e\n\u003cli\u003eOperational mode LED indicators\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\u003eHI 8711 allows the selection of two set points with two independent outputs for acid and alkaline dosages.\u003c\/p\u003e\n\u003cp\u003eEach model accepts either a direct input from a pH or ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes. In addition. 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\u003eThe HI 8711 incorporates adjustable overtime dosing protection from 5 to 60 minutes. If dosing exceeds selected time. the alarm will be triggered and the dosing contact will deactivate. This feature can be activated or deactivated.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e The HI 8711 is supplied with mounting brackets and instructions.\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e\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\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\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e0.00 to 14.00 pH\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;\"\u003e0.01 pH\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±0.02 pH (0 to 100 °C)\u003cbr\u003e±0.05 pH (-20 to 0 °C)\u003cbr\u003e±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: ±2 pH with OFFSET trimmer\u003cbr\u003eslope: 80 to 110% with SLOPE trimmer\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003cbr\u003eCompensation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003efixed or automatic with Pt100. from -20 to 100°C (-4 to 212°F)\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;\"\u003e2. 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;\"\u003ealk. set: from 0.00 to 14.00 pH\u003cbr\u003eacid set: from 0.00 to 14.00 pH\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;\"\u003e0.2 to 3.00 pH\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":"2026-06-25T15:06:00+12:00","created_at":"2015-09-07T15:16:39+12:00","vendor":"Hanna Instruments","type":"Electrochemical","tags":["Manufacturer_Hanna Instruments","Type_pH \u0026 ORP Meters"],"price":102220,"price_min":102220,"price_max":102220,"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":5832213445,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HI8711","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"HANNA HI 8711 Panel Mounted pH Analog Controller with Dual Setpoint - with 4 to 20mA","public_title":null,"options":["Default Title"],"price":102220,"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_571d9473-7f67-4abc-b4e9-b76cf0e67473.jpeg?v=1443495538","\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-side520a4f52c1d9c_2015_af17fe3a-b109-4985-b770-2234301a8d03.png?v=1443495538","\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-frnt520a4f561961b_2015_460f9f99-aabf-4a22-9c25-333e215cf8c0.png?v=1443495538"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/hi8711_400-1_2015_571d9473-7f67-4abc-b4e9-b76cf0e67473.jpeg?v=1443495538","options":["Title"],"media":[{"alt":null,"id":25254625379,"position":1,"preview_image":{"aspect_ratio":1.0,"height":400,"width":400,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/hi8711_400-1_2015_571d9473-7f67-4abc-b4e9-b76cf0e67473.jpeg?v=1443495538"},"aspect_ratio":1.0,"height":400,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/hi8711_400-1_2015_571d9473-7f67-4abc-b4e9-b76cf0e67473.jpeg?v=1443495538","width":400},{"alt":null,"id":25254658147,"position":2,"preview_image":{"aspect_ratio":0.924,"height":503,"width":465,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-side520a4f52c1d9c_2015_af17fe3a-b109-4985-b770-2234301a8d03.png?v=1443495538"},"aspect_ratio":0.924,"height":503,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-side520a4f52c1d9c_2015_af17fe3a-b109-4985-b770-2234301a8d03.png?v=1443495538","width":465},{"alt":null,"id":25254690915,"position":3,"preview_image":{"aspect_ratio":0.808,"height":442,"width":357,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-frnt520a4f561961b_2015_460f9f99-aabf-4a22-9c25-333e215cf8c0.png?v=1443495538"},"aspect_ratio":0.808,"height":442,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/8710-frnt520a4f561961b_2015_460f9f99-aabf-4a22-9c25-333e215cf8c0.png?v=1443495538","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\u003eAuto-diagnostics to verify offset and slope calibration and electrode contamination\/deterioration\u003c\/li\u003e\n\u003cli\u003eSelectable manual ON. OFF and automatic dosing control for alkaline. acid and REDOX dosing with indicator\u003c\/li\u003e\n\u003cli\u003eDual set point with two independent dosing outputs\u003c\/li\u003e\n\u003cli\u003eExtended temperature compensation range: -20 to 100°C\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\u003eFail Safe Function–the alarm relay is activated at power down\u003c\/li\u003e\n\u003cli\u003eOperational mode LED indicators\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\u003eHI 8711 allows the selection of two set points with two independent outputs for acid and alkaline dosages.\u003c\/p\u003e\n\u003cp\u003eEach model accepts either a direct input from a pH or ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes. In addition. 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\u003eThe HI 8711 incorporates adjustable overtime dosing protection from 5 to 60 minutes. If dosing exceeds selected time. the alarm will be triggered and the dosing contact will deactivate. This feature can be activated or deactivated.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e The HI 8711 is supplied with mounting brackets and instructions.\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e\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\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\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003e0.00 to 14.00 pH\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;\"\u003e0.01 pH\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±0.02 pH (0 to 100 °C)\u003cbr\u003e±0.05 pH (-20 to 0 °C)\u003cbr\u003e±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: ±2 pH with OFFSET trimmer\u003cbr\u003eslope: 80 to 110% with SLOPE trimmer\u003c\/span\u003e\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003cbr\u003eCompensation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e\u003cspan style=\"font-size: small;\"\u003efixed or automatic with Pt100. from -20 to 100°C (-4 to 212°F)\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;\"\u003e2. 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;\"\u003ealk. set: from 0.00 to 14.00 pH\u003cbr\u003eacid set: from 0.00 to 14.00 pH\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;\"\u003e0.2 to 3.00 pH\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 8711 Panel Mounted pH Analog Controller with Dual Setpoint - 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

  • Auto-diagnostics to verify offset and slope calibration and electrode contamination/deterioration
  • Selectable manual ON. OFF and automatic dosing control for alkaline. acid and REDOX dosing with indicator
  • Dual set point with two independent dosing outputs
  • Extended temperature compensation range: -20 to 100°C
  • Supports potential matching pin connection
  • Both 4-20 and 0-20 mA output     
  • ±5V outputs for amplified electrodes
  • Fail Safe Function–the alarm relay is activated at power down
  • Operational mode LED indicators
  • Backlit LCD
  • Transparent splash-proof cover

 

HI 8711 allows the selection of two set points with two independent outputs for acid and alkaline dosages.

Each model accepts either a direct input from a pH or ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes. In addition. you can choose the output configuration for connecting a recorder or a PLC. between 0-20 or 4-20 mA.

The HI 8711 incorporates adjustable overtime dosing protection from 5 to 60 minutes. If dosing exceeds selected time. the alarm will be triggered and the dosing contact will deactivate. This feature can be activated or deactivated.

 

Order Information:
The HI 8711 is supplied with mounting brackets and instructions.

Product Manuals

  Manual: Download

Specification :

Range   0.00 to 14.00 pH
Resolution   0.01 pH
Accuracy
@ 20 °C
  ±0.02 pH (0 to 100 °C)
±0.05 pH (-20 to 0 °C)
±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: ±2 pH with OFFSET trimmer
slope: 80 to 110% with SLOPE trimmer
Temperature
Compensation
  fixed or automatic with Pt100. from -20 to 100°C (-4 to 212°F)
Recorder Output   0-20 mA or 4-20 mA (isolated)
Setpoint Relay   2. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)
Setpoint Range   alk. set: from 0.00 to 14.00 pH
acid set: from 0.00 to 14.00 pH
Alarm Relay   1. isolated. 2 A. max 240 V. resistive load. 1000000 strokes (not fuse protected)
Alarm Range   0.2 to 3.00 pH
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.