The HI991001, HI991002 and HI991003 are ideal meters 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.

Includes:

• (1) HI1297D pH/ORP probe with internal temperature sensor
• (1) HI70004 pH 4.01 buffer sachet
• (1) HI70007 pH 7.01 buffer sachet
• (2) HI700661 electrode cleaning solution sachet
• (3) Batteries
• (1) Instructions
• (1) Rugged carrying case.

• 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
• 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.)