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Model

HI-4221

Range

pH -2.0 to 20.0; -2.00 to 20.00; -2.000 to 20.000 pH

Resolution

pH 0.1 pH; 0.01 pH; 0.001 pH

Accuracy

pH ±0.1 pH; ±0.01 pH; ±0.002 pH

Range

mV ±2000 mV

Resolution

mV 0.1 mV

Accuracy

mV ±0.2 mV

Range

Temp -20.0 to 120°C; -4.0 to 248.0°F; 253.15 to 393.15K

Resolution

Temp 0.1°C; 0.1°F; 0.1K

Accuracy

Temp ±0.2°C; ±0.4°F; ±0.2K

Calibration

pH Automatic up to 5 points with 8 memorized values (pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) + 5 custom buffers

Calibration

Temp 3 points

Relative

mV Offset Range   ±2000 mV

Input Channel(s)

1 pH/mV

Calibration Check

pH electrode and buffer condition

Temperature Compensation

pH Automatic or manual from -20.0 to 120.0°C (-4.0 to 248.0°F)

Log on Demand

10 Lots, 5000 samples per lot

Auto Endpoint

Yes

PC Connection

Opto-isolated USB and RS232

Display

240 x 320 dot-matrix color LCD with on-screen help, graphing, language selection and custom configuration

Power

12 VDC adapter (included)

Dimensions

159 x 230 x 93 mm (6.3 x 9.1 x 3.7")

Weight

800 g (1.8 lb.)