Máy đo pH/ORP/ISE/Nhiệt độ để bàn HI 2221-02

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Máy đo pH/ORP/ISE/Nhiệt độ để bàn HI 2221-02

Máy đo pH, oxy hóa khử-ORP, ISE, Nhiệt độ để bàn

Hãng sản xuất: HANNA

Xuất xứ: Romania

Model: HI 2221-02

Calibration Check™ pH bench meter with logging up to 100 samples, Calibration Expiration Reminder, range: pH – 2.00 to 16.00 pH mV ± 699.9 mV; ± 2000 mV, Temperature – 20.0 to 120.0 °C, 230V

Giá: Liên hệ 0977.459.400


The HI-2221-02 is a pH bench top meter features our exclusive Calibration Check diagnostics for both pH electrodes and buffer solutions during calibration. This instrument compares the characteristics of the pH electrode from one calibration to the next. In the case of large variances in the electrode condition, it alerts the user that the electrode needs to be properly cleaned prior to calibration and measuring.

The second feature is to detect if the calibration buffer solution is contaminated. After calibration, the probe condition is evaluated and an indicator is displayed informing the user of the overall pH electrode status.

This instrument can measure using ORP electrodes (pH channel input), due to its capability to measure mV with a resolution up to 0.1 mV.

A properly manufactured and maintained pH electrode will retain its measuring integrity for a long time. As a result of many factors such as age, poor maintenance or improper handling, any electrode in time will lose its integrity. The most common cause for pH measurement inaccuracies is an unclean or improperly cleaned electrode. This is very important to note, because during calibration, the instrument assumes that the electrode is clean and that the standardization curve created during the calibration process will remain a valid reference until the next calibration.

Key features

  • pH Calibration Check
  • On-screen electrode condition and response time
  • Up to five point calibration with seven standard buffers
  • Diagnostic alerts through icons
  • Automatic Temperature Compensation
  • GLP features
  • Optional PC interface via USB
  • HI 1131B pH electrode and HI 7662 temperature probe
  • HI 76404N electrode holder
  • Starter pack of buffer and cleaning solutions
  • 12 VDC adapter
  • Instructions
Range Ph -2.00 to +16.00 pH
  mV ± 699.9 mV; ± 2000 mV
  Temperature -20.0 to 120.0 °C
Resolution pH 0.01 pH
  mV 0.1 mV (± 699.9 mV); 1 mV (± 2000 mV)
  Temperature 0.1 °C
Accuracy pH ± 0.01 pH
  mV ± 0.2 mV (± 699.9 mV); ± 1 mV (± 2000 mV)
  Temperature ± 0.2 °C (excluding probe error)
pH Calibration   Up to 5 point calibration, 7 standard buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45)
Temperature Compensation   Manual or automatic from -20 to 120°C
Temperature Probe   HI 1131P glass body, single junction, refillable with BNC connection and 1 m (3.3') Cable HI 7662 stainless steel probe
PC Connection   USB
Data Logging   100 points
Dimensions   235 x 222 x 109 mm (9.2 x 8.7 x 4.3")
Weight   1.3 kg (2.9 lb.)