Benchtop Dissolved Oxygen Meter

we are offering benchtop dissolved oxygen meter. we supply benchtop dissolved oxygen meter which is of optimum quality. hi 4421 benchtop dissolved oxygen meter is a research grade dissolved oxygen bench meter with extensive capabilities in measuring do as bod (biological oxygen demand), our (oxygen uptake rate), sour (specific oxygen uptake rate), atmospheric pressure and temperature. the benchtop dissolved oxygen meter can be performed in ppm (mg/l) range or in % and feature automatic or manual temperature and atmospheric pressure compensation and manual salinity compensation. benchtop dissolved oxygen meter features :

• extended do range up to 90 ppm (mg/l) and 600%
• measures do, atmospheric pressure and temperature
• do direct, do direct/auto hold, bod : biological oxygen demand, our: oxygen uptake rate, sour : specific oxygen uptake rate
• temperature and atmospheric pressure automatic compensation
• manual salinity compensation
• fully customizable
• large log memory using different logging methods
• paleographic probe with built-in temperature sensor

about benchtop dissolved oxygen meter :

• automatic and manual calibration of do can be performed in one or two points using standard or user defined standards.
• users can set the reading stability criteria; three modes are available : fast, medium and accurate.
• direct/auto hold automatically holds the reading on display when measurement stability is reached.
• in direct reading mode, the user interface can be set to basic with or without glp, graphic or logging information.
• these instruments offer multi-language support and contextual help is available through a dedicated help key.
• clear tutorial messages and directions are available on-screen to quickly and easily guide users through all measurement and calibration procedures to ensure measurements and procedures are performed properly.
• the bod, our and sour methods are supported with a dedicated tutorial and step by step indication in order to assure a full and correct reading of do using this specific measuring method.
• the do probe is using the paleographic principal of measurement and has a built-in temperature sensor.
• up to 10 profiles can be saved and recalled eliminating the need to reconfigure each time when a different electrode is used.
• user definable configurations can include reading mode : direct or bod, our, and sour, measurement units, temperature units, stability criteria, and temperature, atmospheric pressure and salinity compensation.
• three selectable logging modes are available : automatic, manual and auto hold logging. up to 100 logging lots can be stored for automatic or manual modes.
• automatic logging features a selectable area and sampling period while glp information includes complete data about user calibration of parameter and identification information for the instrument, user, and company.
• data can be transferred to a pc via the opto-isolated pc interface via the rs232 or usb ports and hi 92000 software (optional).

order information : hi 4421-01 (115v) and hi 4421-02 (230v) is supplied with hi 76408 do probe, hi 76404n electrode holder, hi 7041s electrolyte solution (30 ml), hi 76407a membrane caps (2), 12 vdc adapter and instruction manual. » specifications rangedissolved oxygen0.00 to 90.00 ppm; 0.0 to 600.0 % saturationbarometric pressure450 to 850 mmhg; 560 to 1133 mbartemperature-20.0 to 120.0oc; -4.0 to 248of; 253.1 to 393.1 kresolutiondissolved oxygen0.01 ppm; 0.1% saturationbarometric pressure1 mm hgtemperature0.1oc/of/kaccuracydissolved oxygen±1.5% of reading ±1 digitbarometric pressure±3 mm hg + 1 least significant digitmeasurementmodesdirect do; bod (biochemical oxygen demand); our (oxygen uptake rate); sour (specific oxygen uptake rate)calibrationdissolved oxygenautomatic/user standard, one or two pointsbarometric pressuresingle pointprobethin body, polarographic dissolved oxygen probe with internal temperature sensor and 1 m (3.3’) cable (included)loggingrecord samplesup to 100 lots; 10,000 samples/lot for automatic logging; 5000 samples/lot for manual logginglogging intervalfrom one second and uptypemanual, automaticother detailstemperature compensation0.0 to 50.0oc; 32.0 to 122.0of; 237.1 to 323.1 ksalinitycompensation0 to 45 g/l (ppt)glp featuresyes (last calibration data, calibration info)alarm (do, bod, our, sour)inside and outside limitspc connectionopto-isolated usb and rs232displaygraphic color lcd with on-screen help, graphing, language selection and custom configurationpower supply12 vdc adapter (included)dimensions160 x 231 x 94 mm (6.3 x 9.1 x 3.7”)weight1.2 kg (2.6 lbs.) »accessories solutionshi 7040lzero oxygen solutionhi 7041srefilling electrolyte solution, 30 mlhi 7041mrefilling electrolyte solution, 230 mlhi 7041mrefilling electrolyte solution, 230 mlhi 7041lrefilling electrolyte solution, 500 mlaccessorieshi 76407a/pmembranes for do probeshi 76404nelectrode holder for hi 42xx type bench metershi 92000windows® compatible softwarehi 920013usb cablehi 920010cable for pc connection, 9 to 9-pinprobeshi 76408thinner lighter do probe for laboratorieshi 76407/2standard do probe, 2 m cablehi 76407/4standard do probe, 4 m cablehi 76407/10standard do probe, 10 m cablehi 76407/20standard do probe, 20 m cable