| pH Range | -2.00 to 16.00 pH |
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| pH Resolution | 0.01 pH |
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| pH Accuracy | ±0.02 pH |
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| pH Calibration | automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18) |
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| mV Range | ±1999 mV |
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| mV Resolution | 1 mV |
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| mV Accuracy | ±2 mV |
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| Temperature Range | -5.0 to 105.0°C / 23.0 to 221.0°F |
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| Temperature Resolution | 0.1°C / 0.1°F |
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| Temperature Accuracy | ±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside) |
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| Temperature Compensation | automatic from -5.0 to 105.0ºC (23 to 221ºF) |
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| Electrode/Probe | HI1297D pre-amplified pH/ORP probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included) |
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| Battery Type/Life | 1.5V (3) AAA / approximately 1200 hours of continuous use; auto-off after 8 minutes of non-use |
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| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
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| Dimensions | 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”) |
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| Weight | 205 g (7.2 oz.) |
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| Ordering Information | HI991002 and HI991003 are supplied with HI1297D pH/ORP probe with internal temperature sensor, HI70004 pH 4.01 buffer sachet, HI70007 pH 7.01 buffer sachet, HI700661 electrode cleaning solution sachet (2), batteries, instructions and rugged carrying case. |
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