Hanna HI5421-01 Offers

Features

• Choice of calibration: Automatic standard recognition is available for two points at 0 and 100% saturation or 0 mg/L and 8.26 mg/L
• Automatic or user standard DO calibration
• Selectable sampling period feature for automatic logging from 1 second to 180 minutes
• Single input channel
• AutoHold feature to freeze the stable reading on the LCD (DO only)
• GLP feature for DO
• Capacitive touch keypad
• Two selectable alarm limits (for DO, BOD, OUR, SOUR)
• Online and offline graph
• Dedicated help key with contextual message
• Three selectable logging modes: Automatic, Manual or AutoHold (DO only)
• Large color backlight graphic LCD (240 x 320 pixels) with selectable color palette
• Six measurement parameters: DO, BOD, OUR, SOUR, pressure and temperature
• Up to 100 logging lots for automatic or manual modes, up to 200 OUR and SOUR reports and up to 200 BOD method information entries
• Profile feature: Store up to ten different user setups

Highly customizable user interface: The user interface of this benchtop allows the user to show measurements in various modes: basic measurement with or without GLP information, real-time graphing, and logging data. Calibration stability criteria can be adjusted from fast, moderate, and accurate. Programmable alarm limits can be set to inside or outside allowable limits.

Color graphic LCD: This benchtop features a color graphic LCD with on-screen help, graphic, and custom color configurations. The display allows for real-time graphing and the use of virtual keys provide for an intuitive user interface.

Capacitive touch: This benchtop features sensitive capacitive touch buttons for accurate keystrokes when navigating menus and screens. There are four dedicated keys that are used for routine operations including calibration and switching measurement modes and four virtual keys that change based upon use. The capacitive touch technology ensures the buttons never get clogged with sample residue.

Built in baromter: This benchtop has a built-in pressure transducer to automatic barometric pressure compensation of all dissolved oxygen measurements. The barometric pressure can be calibrated to a single point.

BOD, OUR and Sour measurement modes: An additional three measurement modes are available to measure Biological Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific Oxygen Uptake Rate (SOUR). Simply enter values and take readings at appropriate times and the meter will automatically calculate the values.

GLP data: This benchtop includes a GLP Feature that allows users to view calibration data and calibration expiration information at the touch of a key. Calibration data include date, time, and calibration points.

Data logging: Three selectable logging modes are available on this benchtop: Automatic, manual, and AutoHold logging. Automatic and manual logs up to 100 lots with 50,000 records maximum/lot, with up to 100,000 total data points. Automatic logging features the option to save data according to sampling period and interval.

Contexual help: Contextual help is always available through a dedicated “HELP” key. Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration. The help information displayed is relative to the setting/option being viewed.

How to use

This benchtop can be calibrated automatically to two points (0% and 100% saturation or 0.00 mg/L and 8.26 mg/L) or a user-defined value. The calibration data including date, time, and calibration points can be accessed at any time along with the current measurement by selecting the Good Laboratory Practice (GLP) display option. Readings are compensated for barometric pressure by a built-in pressure transducer located in the meter. Calibration of the barometric pressure is a single point with manual entry of the current value obtained from a local weather service or another device. Barometric pressure is displayed in a multiple choice of units including mmHg, mbar, kPa, mHg, psi, and atm. This benchtop also allows for automatic salinity compensation with a selectable salinity range of 0 to 45 g/L. This benchtop offers three additional measurement modes: Biological Oxygen Demand (BOD), Oxygen Uptake Rate (OUR), and Specific Oxygen Uptake Rate (SOUR). Simply enter values and take readings at appropriate times and the meter will automatically calculate the values. Three selectable logging modes are available: automatic, manual, and AutoHold logging. Up to 100,000 data points can be recorded in 100 lots with 50,000 records maximum/lot and exported to a computer for data review and storage.