อุปกรณ์วัด pH (Research Grade Meter with Calibration Check™ pH/ORP/ISE & Temperature)
Research Grade Meter with Calibration Check™ pH/ORP/ISE & Temperature
HI 4222 is a research grade pH, ORP and temperature benchtop meter. This instrument incorporates dual channels with a separate temperature input and support the external reference electrodes required by some pH and ISE sensors.
The customizable user interface can display two channels at the same time, showing the measurements in various modes: basic measurement with or without GLP information, graph or log history.
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.
HANNA’s pH Calibration Check™ diagnostics system ensures accurate readings every time by alerting users of potential problems during the calibration process. The Calibration Check™ system eliminates erroneous readings due to dirty or faulty pH electrodes or contaminated pH buffer solutions. After the guided calibration process, an electrode condition indicator is displayed on the LCD informing the user of the overall pH electrode status.
Automatic, semiautomatic and manual pH calibration is available in up to five points, with eight standard (1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) and up to 5 custom buffers. The Out of Calibration Range and Cal Due features alert the user in the event the measurement is far from the calibration point or when the meter is due for recalibration. Proper, scheduled calibrations are crucial for accurate and repeatable measurements.
This instrument also features up to five point Manual Selection and Custom Standard ISE calibration. From the on-screen list, users can select their ISE electrode parameter along with it’s standard configuration profile or create their own.
Up to a four point automatic or custom standard conductivity calibration can be performed in up to four points as well as probe cell constant
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: temperature compensation in accordance with each parameter, ISO-potential points for pH and ISE, measurement units of ISE concentrations and ISE electrode type, temperature units. Three selectable logging modes are available: Automatic, Manual and AutoHold logging. Up to 100 logging lots can be stored for automatic or manual modes along with up to 200 USP reports, and up to 100 ISE methods reports. Automatic logging features a selectable area and sampling period while GLP information includes complete data about user calibration of each 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).
pH Range -2.000 to 20.000 pH
Resolution 0.1 pH; 0.01 pH; 0.001 pH
Accuracy ±0.1 pH; ±0.01 pH; ±0.002 pH ±1 LSD
mV Range ±2000 mV
Resolution 0.1 mV
Accuracy ±0.2 mV ±1 LSD
ISE Range 1 x 10-6 to 9.99 x 1010 concentration
Resolution 1; 0.1; 0.01; 0.001 concentration
Accuracy ±0.5% (monovalent ions); ±1% (divalent ions)
Temperature Range -20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K
Resolution 0.1°C; 0.1°F; 0.1K
Accuracy ±0.2°C; ±0.4°F; ±0.2K (without probe)
Calibration pH automatic, up to five point calibration, eight standard buffers available (1.68, 3.00, 4.01, 6.86, 7.01,9.18, 10.01, 12.45), and five custom buffers
ISE automatic, up to five point calibration, 5 fixed standard solutions available for each measurement unit, and 5 user defined standards
pH Calibration Check™ yes
Rel. mV Offset Range ±2000 mV
Input Channel(s) 2 pH/ORP/ISE
GLP cell constant, reference temperature/coefficient, calibration points, cal time stamp
pH Temp. Compensation automatic or manual from -20.0 to 120.0°C/-4.0 to 248.0°/253 to 393K
pH Electrode HI 1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included)
Temperature Probe HI 7662-T stainless steel temperature probe with 1 m (3.3’) cable (included)
Logging Record 100 lots with 10,000 record/lot
Interval settable between 1 and max log time
Type automatic, log on demand, auto HOLD
Display 240 x 320 dot-matrix color LCD with on-screen help, graphing, language selection and custom configuration
PC Connection / Power Supply USB and RS232 / 12 VDC adapter (included)
Environment / Dimensions / Weight 0-50ºC (32 to 122ºF) (273 to 323K) RH max 95% non-condensing / 160 x 231 x 94 mm (6.3 x 9.1 x 3.7”) / 1.2 Kg (1.8 lbs.)
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