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{"id":1582185157,"title":"pH 502421-2 pH Digital Controller with MatcHANNA HIng Pin and PID Control","handle":"ph-502421-2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"Product-Body\"\u003e\n\u003cul\u003e\n\u003cli\u003eSingle or dual set point\u003c\/li\u003e\n\u003cli\u003eSSR relay available\u003c\/li\u003e\n\u003cli\u003eControl through analog output\u003c\/li\u003e\n\u003cli\u003ePID control\u003c\/li\u003e\n\u003cli\u003eFully programmable\u003c\/li\u003e\n\u003cli\u003emA and VDC recorder output or RS485\u003c\/li\u003e\n\u003cli\u003eDifferential input for ground loop protection\u003c\/li\u003e\n\u003cli\u003eAutomatic three point calibration\u003c\/li\u003e\n\u003cli\u003eLast calibration data\u003c\/li\u003e\n\u003cli\u003eAutomatic Temperature Compensation\u003c\/li\u003e\n\u003cli\u003eSimple wiring with removable terminal modules\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe pH 502 series of controllers offer many features to increase the level of control available in your plant. These instruments can be configured to utilize P. PI. PID controlling. With this feature. the pH 502 takes the place of three instruments that only allow one configuration each. The pH 502 line includes models that incorporate control through analog output to drive any compatible device. such as an electrovalve or pump. Models equipped with a solid state relay are also available to ensure maximum life of the switching device. Each model has a differential input for a grounding bar to extend electrode life. Several models come with an RS485 port. as well as analog recorder output.\u003c\/p\u003e\n\u003cp\u003eFail Safe Alarm System protects against power interruption or line failure. 1. 2 or 3 point automatic calibration and manual or Automatic Temperature Compensation complete the features of this controller.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eChoose your configuration\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003epH 502421-1\u003c\/strong\u003e dual setpoint with SSR relay. on\/off and PID controls. analog output. 115V\u003cbr\u003e\u003cstrong\u003epH 502421-2\u003c\/strong\u003e dual setpoint with SSR relay. on\/off and PID controls. analog output. 230V and PID controls. RS485 output. 230V\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003eEach pH 502 model is supplied complete with mounting brackets and instructions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"TabbedPanels1\" class=\"TabbedPanels\"\u003e\n\u003cul class=\"TabbedPanelsTabGroup\"\u003e\n\u003cli class=\"TabbedPanelsTab TabbedPanelsTabSelected\"\u003eSpecifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"TabbedPanelsContentGroup\"\u003e\n\u003cdiv class=\"TabbedPanelsContent TabbedPanelsContentVisible\"\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\u003cstrong\u003e\u003csmall\u003epH\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.00 to 14.00 pH\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003eTemperature\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e-9.9 to 120°C\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\u003cstrong\u003e\u003csmall\u003epH\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.01 pH\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003eTemperature\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.1°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 20°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003epH\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e±0.02 pH\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003eTemperature\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e±0.5°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e10\u003csup\u003e12\u003c\/sup\u003e Ohm\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Calibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003eautomatic. one. two or three point. at pH 4.01. 7.01. 10.01\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\u003eautomatic (with Pt100 probe) or manual from -9.9 to 120°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003edigital: RS485 bi-directional opto-isolated; or analog. galvanically isolated: 0-1 mA. 0-20 mA and 4-20 mA. 0-5 VDC. 1-5 VDC and 0-10 VDC\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSet Point Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e1 or 2 contact outputs SPDT 5A-250 VAC. 5A-30 VDC (resistive load) or 1 or 2 Solid State Relay (SSR). 1A. 250 VAC (resistive and inductive load). fuse protected (2A. 250V fast fuse)\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\u003eone contact output SPDT. 5A-250 VAC. 5A-30 VDC (resistive load). fuse protected (5A. 250V fuse)\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\u003e115 VAC ±10% or 230 VAC ±10%; 50\/60 Hz\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e15 VA\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Current\u003cbr\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e400 mA 250V fast fuse\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\u003e0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003epanel cutout: 140 x 140 mm. instrument: 144 x 144 x 170 mm\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\u003e1.6 kg (3.5 lb.)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","published_at":"2026-06-25T15:55:27+12:00","created_at":"2015-09-01T15:18:28+12:00","vendor":"Hanna Instruments","type":"Lab Equipment","tags":["category_Other Accessories","Manufacturer_Hanna Instruments","Type_Lab Equipment"],"price":123500,"price_min":123500,"price_max":123500,"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":4857328133,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"pH 502421-2","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"pH 502421-2 pH Digital Controller with MatcHANNA HIng Pin and PID Control","public_title":null,"options":["Default Title"],"price":123500,"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\/ph502_200_2015.jpeg?v=1443495842"],"featured_image":"\/\/acornsci.co.nz\/cdn\/shop\/products\/ph502_200_2015.jpeg?v=1443495842","options":["Title"],"media":[{"alt":null,"id":21307687011,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/ph502_200_2015.jpeg?v=1443495842"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/acornsci.co.nz\/cdn\/shop\/products\/ph502_200_2015.jpeg?v=1443495842","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"Product-Body\"\u003e\n\u003cul\u003e\n\u003cli\u003eSingle or dual set point\u003c\/li\u003e\n\u003cli\u003eSSR relay available\u003c\/li\u003e\n\u003cli\u003eControl through analog output\u003c\/li\u003e\n\u003cli\u003ePID control\u003c\/li\u003e\n\u003cli\u003eFully programmable\u003c\/li\u003e\n\u003cli\u003emA and VDC recorder output or RS485\u003c\/li\u003e\n\u003cli\u003eDifferential input for ground loop protection\u003c\/li\u003e\n\u003cli\u003eAutomatic three point calibration\u003c\/li\u003e\n\u003cli\u003eLast calibration data\u003c\/li\u003e\n\u003cli\u003eAutomatic Temperature Compensation\u003c\/li\u003e\n\u003cli\u003eSimple wiring with removable terminal modules\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe pH 502 series of controllers offer many features to increase the level of control available in your plant. These instruments can be configured to utilize P. PI. PID controlling. With this feature. the pH 502 takes the place of three instruments that only allow one configuration each. The pH 502 line includes models that incorporate control through analog output to drive any compatible device. such as an electrovalve or pump. Models equipped with a solid state relay are also available to ensure maximum life of the switching device. Each model has a differential input for a grounding bar to extend electrode life. Several models come with an RS485 port. as well as analog recorder output.\u003c\/p\u003e\n\u003cp\u003eFail Safe Alarm System protects against power interruption or line failure. 1. 2 or 3 point automatic calibration and manual or Automatic Temperature Compensation complete the features of this controller.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eChoose your configuration\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003epH 502421-1\u003c\/strong\u003e dual setpoint with SSR relay. on\/off and PID controls. analog output. 115V\u003cbr\u003e\u003cstrong\u003epH 502421-2\u003c\/strong\u003e dual setpoint with SSR relay. on\/off and PID controls. analog output. 230V and PID controls. RS485 output. 230V\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003eEach pH 502 model is supplied complete with mounting brackets and instructions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"TabbedPanels1\" class=\"TabbedPanels\"\u003e\n\u003cul class=\"TabbedPanelsTabGroup\"\u003e\n\u003cli class=\"TabbedPanelsTab TabbedPanelsTabSelected\"\u003eSpecifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"TabbedPanelsContentGroup\"\u003e\n\u003cdiv class=\"TabbedPanelsContent TabbedPanelsContentVisible\"\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\u003cstrong\u003e\u003csmall\u003epH\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.00 to 14.00 pH\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003eTemperature\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e-9.9 to 120°C\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\u003cstrong\u003e\u003csmall\u003epH\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.01 pH\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003eTemperature\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.1°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 20°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003epH\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e±0.02 pH\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003csmall\u003eTemperature\u003c\/small\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e±0.5°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e10\u003csup\u003e12\u003c\/sup\u003e Ohm\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Calibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003eautomatic. one. two or three point. at pH 4.01. 7.01. 10.01\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\u003eautomatic (with Pt100 probe) or manual from -9.9 to 120°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003edigital: RS485 bi-directional opto-isolated; or analog. galvanically isolated: 0-1 mA. 0-20 mA and 4-20 mA. 0-5 VDC. 1-5 VDC and 0-10 VDC\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSet Point Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e1 or 2 contact outputs SPDT 5A-250 VAC. 5A-30 VDC (resistive load) or 1 or 2 Solid State Relay (SSR). 1A. 250 VAC (resistive and inductive load). fuse protected (2A. 250V fast fuse)\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\u003eone contact output SPDT. 5A-250 VAC. 5A-30 VDC (resistive load). fuse protected (5A. 250V fuse)\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\u003e115 VAC ±10% or 230 VAC ±10%; 50\/60 Hz\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e15 VA\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver Current\u003cbr\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e400 mA 250V fast fuse\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\u003e0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003epanel cutout: 140 x 140 mm. instrument: 144 x 144 x 170 mm\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\u003e1.6 kg (3.5 lb.)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e"}

pH 502421-2 pH Digital Controller with MatcHANNA HIng Pin and PID Control

Product Description

 

  • Single or dual set point
  • SSR relay available
  • Control through analog output
  • PID control
  • Fully programmable
  • mA and VDC recorder output or RS485
  • Differential input for ground loop protection
  • Automatic three point calibration
  • Last calibration data
  • Automatic Temperature Compensation
  • Simple wiring with removable terminal modules

 

The pH 502 series of controllers offer many features to increase the level of control available in your plant. These instruments can be configured to utilize P. PI. PID controlling. With this feature. the pH 502 takes the place of three instruments that only allow one configuration each. The pH 502 line includes models that incorporate control through analog output to drive any compatible device. such as an electrovalve or pump. Models equipped with a solid state relay are also available to ensure maximum life of the switching device. Each model has a differential input for a grounding bar to extend electrode life. Several models come with an RS485 port. as well as analog recorder output.

Fail Safe Alarm System protects against power interruption or line failure. 1. 2 or 3 point automatic calibration and manual or Automatic Temperature Compensation complete the features of this controller.

Choose your configuration

pH 502421-1 dual setpoint with SSR relay. on/off and PID controls. analog output. 115V
pH 502421-2 dual setpoint with SSR relay. on/off and PID controls. analog output. 230V and PID controls. RS485 output. 230V
 

 

 

 

Order Information:
Each pH 502 model is supplied complete with mounting brackets and instructions.

  • Specifications
Range pH 0.00 to 14.00 pH
  Temperature -9.9 to 120°C
Resolution pH 0.01 pH
  Temperature 0.1°C
Accuracy @ 20°C pH ±0.02 pH
  Temperature ±0.5°C
Input Impedance   1012 Ohm
pH Calibration   automatic. one. two or three point. at pH 4.01. 7.01. 10.01
Temperature
Compensation
  automatic (with Pt100 probe) or manual from -9.9 to 120°C
Outputs   digital: RS485 bi-directional opto-isolated; or analog. galvanically isolated: 0-1 mA. 0-20 mA and 4-20 mA. 0-5 VDC. 1-5 VDC and 0-10 VDC
Set Point Relay   1 or 2 contact outputs SPDT 5A-250 VAC. 5A-30 VDC (resistive load) or 1 or 2 Solid State Relay (SSR). 1A. 250 VAC (resistive and inductive load). fuse protected (2A. 250V fast fuse)
Alarm Relay   one contact output SPDT. 5A-250 VAC. 5A-30 VDC (resistive load). fuse protected (5A. 250V fuse)
Power Supply   115 VAC ±10% or 230 VAC ±10%; 50/60 Hz
Power Consumption   15 VA
Over Current
Protection
  400 mA 250V fast fuse
Environment   0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions   panel cutout: 140 x 140 mm. instrument: 144 x 144 x 170 mm
Weight   1.6 kg (3.5 lb.)

 

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