Details
Important Note: This product must be purchased in conjunction with several calibration solutions for accurate testing. Please read this entire page to get all the necessary details for using this exceptional meter!
HI 991003N 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 1297D pH probe feature a recessed flat tip that is easy to clean and prevents solids in solutions from collecting on the sensor. The titanium body of the probe functions as a potential matching pin for increased stability of readings and extended sensor life.
The HI 991003N easily fits in the palm of your hand and the bottom probe connection ensures the electrode cable doesn’t get in your way. The large, multi-level LCD displays the primary reading, temperature and calibration instructions simultaneously.
- New Larger LCD
- Tutorial messages for calibration and setup
- Missing Probe Indicator
- New Rugged, thinner ergonomic case
- Faster/Easier battery replacement
Specifications
| Range | ||
| pH | -2.00 to 16.00 pH | |
| pH-mV | ±825 mV (pH-mV) | |
| ORP | ±1999 mV | |
| Temperature | -5.0 to 105.0°C; 23.0 to 221.0°F | |
| Resolution | ||
| pH | 0.01 pH | |
| mV | 1mV | |
| Temperature | 0.1°C/0.1°F | |
| Accuracy (@20°C) | ||
| pH | ±0.02 pH | |
| mV | ±2mV | |
| Temperature | ±0.5°C up to 60°C; ±1°C outside; ±1°F up to 140°F; ±2°F outside | |
| Temperature Compensation | pH Automatic | |
| pH Calibration | Automatic 1 or 2 point calibration with 2 sets of memorized buffers (4.01, 7.01, 10.01 or 4.01, 6.86, 9.18) | |
| Electrode | HI 1297D pre-amplified pH/temperature electrode with DIN connector and 1 m (3.3’ cable) | |
| Battery Type | (3) 1.2V AAA | |
| Battery Life | Approximately 200 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 | 150 x 58 x 29 mm (5.9 x 2.8 x 1.1”) | |
| Weight | 205g (7.2 oz.) |
Click here to read some additional informative literature on this device.
You Will Also Need these Calibration Solutions:
ORP Pretreatment Solution ($14.99)
ORP Oxidizing Pretreatment Solution ($14.99)
pH 7.01 Buffer Solution ($11)
pH 4.01 Buffer Solution ($11)
