{"product_id":"hanna-instruments-hi-981520-marine-monitor-for-ph-ec-marine-salinity-and-temperature","title":"Hanna Instruments HI-981520 Marine Monitor for pH, EC, Marine Salinity and Temperature","description":"\u003cp\u003eTesting and monitoring salinity in saltwater aquariums is an ongoing task. The HI-981520 Marine Monitor is the ideal solution for aquarists looking to continuously monitor salinity levels in aquariums, seawater, or aquaculture.\u003c\/p\u003e\u003cp\u003eThe HI-981520 is an easy to use vertical mount unit that continuously monitors and displays conductivity and pH. The system can be calibrated at one or two points for pH and at one point for conductivity. Seawater salinity is expressed in either parts per thousand (ppt), Practical Salinity Units (PSU), or Specific Gravity (S.G.). A high\/low alarm can be configured for each parameter and the results are displayed on a large, easy to read LCD. The attached two-electrode conductivity probe features a built-in temperature sensor for rapid, high-accuracy temperature readings.\u003c\/p\u003e \u003cp\u003eThe Hanna HI-1286 pH double junction, gel filled pH electrode features a PEI resin body that is easy to clean and resistant to many aggressive chemicals. Additionally, the double junction design is less susceptible to clogging for fast and stable readings.\u003c\/p\u003e \u003cp\u003e• Waterproof\u003c\/p\u003e \u003cp\u003e• Automatic temperature compensation (ATC)\u003c\/p\u003e \u003cp\u003e• Dual pin graphite EC probe\u003c\/p\u003e \u003ch3\u003ePackage Contents\u003c\/h3\u003e \u003cp\u003e• HI-981520 monitor with attached EC \u0026amp; temperature probe\u003c\/p\u003e \u003cp\u003e• HI-1286 replaceable pH electrode\u003c\/p\u003e \u003cp\u003e• pH 7.01 buffer solution, 20 mL (2 sachets)\u003c\/p\u003e \u003cp\u003e• pH 10.01 buffer solution, 20 mL (2 sachets)\u003c\/p\u003e \u003cp\u003e• 35.00 ppt salinity calibration solution, 20 mL (2 sachets)\u003c\/p\u003e \u003cp\u003e• Electrode cleaning solution, 20 mL (2 sachets)\u003c\/p\u003e \u003cp\u003e• Suction cup (2 pieces)\u003c\/p\u003e \u003cp\u003e• Self‑adhesive strip (2 pieces)\u003c\/p\u003e \u003cp\u003e• 12 VDC power adapter\u003c\/p\u003e \u003cp\u003e• pH electrode quality certificate\u003c\/p\u003e \u003cp\u003e• Quick reference guide with instrument quality certificate\u003c\/p\u003e \u003ch3\u003eMain Features\u003c\/h3\u003e \u003cp\u003e• Two Alarm operating modes (High \/ Low Value) for each supported parameter\u003c\/p\u003e \u003cp\u003e• High \/ Low Alarm generated when measured value exceeds or drops below configured parameter High \/ Low Value\u003c\/p\u003e \u003cp\u003e• Acoustic signal generated each time an alarm is triggered\u003c\/p\u003e \u003cp\u003e• EC probe contains an integral temperature sensor that simplifies installation\u003c\/p\u003e \u003cp\u003e• All readings are compensated for variations in temperature\u003c\/p\u003e \u003ch3\u003eMore features\u003c\/h3\u003e \u003cp\u003e\u003cb\u003eMethod and Parameter: \u003c\/b\u003e Chosen parameter and method used is displayed along with the reading.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eDedicated Setup Key: \u003c\/b\u003e A dedicated setup key allows users to quickly navigate to setup options.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eSplash-proof Keypad: \u003c\/b\u003e Intuitive on-screen menus are easy to navigate with the splash-proof keypad.\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePower Supply: \u003c\/b\u003e The 12 Vdc adapter (included) allows for continuous monitoring\u003c\/p\u003e \u003cp\u003e\u003cb\u003eFixed EC probe: \u003c\/b\u003e Built-in temperature sensor at the tip of the EC sensor allows for rapid determination of the sample temperature and a high-accuracy temperature reading.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eCompact size: \u003c\/b\u003e Measures 125 mm (4.92”) x 185 mm (7.28”) and only 38 mm (1.49”) thick.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eDedicated Calibration Key: \u003c\/b\u003e A dedicated calibration key allows users to start a one or two-point pH and EC automatic calibration at the touch of a button.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eReplaceable pH probe with BNC connection: \u003c\/b\u003e The PEI resin body is easy to clean and resistant to many aggressive chemicals. The porous PTFE junction is equally resistant to aggressive chemicals. The double junction design presents a silver-free electrolyte solution interacting with the sample, making the electrode less susceptible to clogging and guaranteeing a fast response and stable reading.\u003c\/p\u003e \u003ch3\u003eMeasuring Seawater Salinity\u003c\/h3\u003e \u003cp\u003e\u003cb\u003eChoice of Units\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eSeawater salinity units can be chosen through the setup menu.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eppt\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eMeasurements expressed in ppt are based on the Natural Seawater Scale that extends from 0.00 to 80.00 g\/L and covers 10 to 31 °C temperature range. It determines the salinity based upon a conductivity ratio of sample to standard seawater at 15 °C and an approximate salinity value of 35 in seawater.\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePSU\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eThe practical salinity of seawater relates the ratio of electrical conductivity of a normal seawater sample at 15 °C and 1 atmosphere to a potassium chloride solution (KCl) with a mass of 32.4356 g\/Kg water at the same temperature and pressure. Under these conditions the ratio is equal to 1 and S=35. The practical salinity scale may be applied to values 0 through 42.00 psu at temperatures between 0 to 35 °C.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eSpecific Gravity (S.G.)\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eSpecific Gravity, or relative density, is expressed as the ratio of the density of seawater, at a specific temperature, relative to the density of the same volume of pure water at a specific temperature.\u003c\/p\u003e \u003cp\u003eThe probes are secured with suction cups to the back of an aquarium (tank) and are suited for continuous measurement of conductivity and associated parameters required in applications such as seawater, saltwater aquariums, or aquaculture.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"text-align:left;\"\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0.0 to 14.0 pH - (depending on electrode capabilities - see individual specifications)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.2 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eManual or automatic two-point calibration in 7.01 and 10.01 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"text-align:left;\"\u003e\u003cstrong\u003eppt\u003c\/strong\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0.0 to 70.0 ppt (g\/L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1 ppt (g\/L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±1.0 ppt between 0.0 ppt and 40.0 ppt±2.0 ppt between 40.0 ppt and 70.0 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eAutomatic, single point in 35.00 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"text-align:left;\"\u003e\u003cstrong\u003ePSU\u003c\/strong\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0.0 to 70.0 PSU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1 PSU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±1.0 PSU between 0.0 and 40.0 PSU±2.0 PSU between 40.0 and 70.0 PSU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"text-align:left;\"\u003e\u003cstrong\u003eS.G.\u003c\/strong\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e1.000 to 1.041 S.G.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.001 S.G.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.001 S.G.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"text-align:left;\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0.0 to 50.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompensation\u003c\/td\u003e\n\u003ctd\u003eAutomatic, 5 to 50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"text-align:left;\"\u003e\u003cstrong\u003eAlarm\u003c\/strong\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH\u003c\/td\u003e\n\u003ctd\u003eHigh or Low with enable or disable options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEC\u003c\/td\u003e\n\u003ctd\u003eHigh or Low with enable or disable options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003eHigh or Low with enable or disable options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh\/Low value\u003c\/td\u003e\n\u003ctd\u003ewith High\/Low alarm enabled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbes\u003c\/td\u003e\n\u003ctd\u003epH – HI-1286; EC - attached\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e12 vdc adapter (included) from 115 Vac, and 230 Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironment\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C; RH max 95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCasing\u003c\/td\u003e\n\u003ctd\u003eIP65 ingress protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e125 x 185 x 38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e300g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrdering information\u003c\/td\u003e\n\u003ctd\u003eHI-981520 Marine monitor is supplied with HI-1286 pH electrode; attached EC and Temperature probe; pH7.01 buffer solution 20ml x2; pH 10.01 buffer solution 20mL x 2; 35.00 ppt salinity calibration solution 20mL x 2; electrode cleaning solution 20mL x 2; suction cap with clip x 2; self-adhesive fasteners x 2; 12 Vdc power adapter; quick reference guide with QR code for manual download and instrument quality certificate.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHI-1286\u003c\/td\u003e\n\u003ctd\u003epH Electrode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH range\u003c\/td\u003e\n\u003ctd\u003e0 to 13 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJunction Type\/Flow Rate\u003c\/td\u003e\n\u003ctd\u003ePTFE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Electrolyte\u003c\/td\u003e\n\u003ctd\u003ePolymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody material\u003c\/td\u003e\n\u003ctd\u003ePEI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip shape\u003c\/td\u003e\n\u003ctd\u003eSpherical (diameter: 7.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMatching pin\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Pressure\u003c\/td\u003e\n\u003ctd\u003e3.0 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003ecoaxial; 2m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eBNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e160mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Operating Range\u003c\/td\u003e\n\u003ctd\u003e0 to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFixed Probe\u003c\/td\u003e\n\u003ctd\u003eEC and Temperature probe specifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e0.0 to 70.0 ppt; 0.0 to 70.0 PSU; 1.000 to 1.041 S.G.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended operating temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductivity Sensor\u003c\/td\u003e\n\u003ctd\u003eMaterial: ABS; Electrode: Graphite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003eAISI 316 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e12.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e155mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum pressure\u003c\/td\u003e\n\u003ctd\u003e3 bar (44 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable type\/length\u003c\/td\u003e\n\u003ctd\u003eCoaxial\/2m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003eFixed to the monitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDownloads\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/www.hannainstruments.co.uk\/modules\/teapotknowledgehub\/uploads\/man981520_10_22_web-6391e21661c56.pdf\" target=\"_blank\"\u003eHI-981520 Marine monitor for pH, Marine Salinity and Temperature (PDF)\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57640109932917,"sku":"HI-981520-02","price":292.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hi-981520-marine-monitor-for-ph-marine-salinity-and-temperature.jpg?v=1791581582","url":"https:\/\/testallwater.co.uk\/products\/hanna-instruments-hi-981520-marine-monitor-for-ph-ec-marine-salinity-and-temperature","provider":"Test All Water","version":"1.0","type":"link"}