The HI991001, HI991002 and HI991003 are ideal for plating baths, waste water, swimming pool and spa water quality, as well as environmental applications. HI 991003 is a portable pH/pH-mV/ORP/temperature meter with our unique Sensor Check™ feature that allows the user to determine the electrode status at any time. HI 991002 measures pH/ORP/temperature while the HI 991001 measures pH/temperature. The HI1296D pH/temperature and HI1297D pH/ORP/temperature probes feature an easy-to-clean recessed tip that prevents solids in solutions from collecting on the sensor. The AISI 316 stainless steel and titanium body of these probes function as a potential matching pin for increased stability of readings and extended sensor life.
| pH Range | -2.00 to 16.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.02 pH |
| 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) |
| mV Range | ±1999 mV |
| mV Resolution | 1 mV |
| mV Accuracy | ±2 mV |
| pH-mV Range | ±825 mV (pH-mV) |
| pH-mV Resolution | 1 mV |
| pH-mV Accuracy | ±1 mV |
| Temperature Range | -5.0 to 105.0°C / 23.0 to 221.0°F |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside) |
| Temperature Compensation | automatic from -5.0 to 105.0ºC (23 to 221ºF) |
| Electrode/Probe | HI1297D pre-amplified pH/ORP probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included) |
| Battery Type/Life | 1.5V (3) AAA / approximately 1200 hours of continuous use; auto-off after 8 minutes of non-use |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
| Dimensions | 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”) |
| Weight | 205 g (7.2 oz.) |
| 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. |
| Warranty | 2 years (probe 6 months) |
