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General| Model | HI991003 |
|---|---|
| Category | Measuring Instruments |
| pH Range | -2.00 to 16.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.02 pH |
| Temperature Compensation | Automatic |
| Number of Batteries | 4 |
| IP Rating | IP67 |
| Display | LCD |
| Type | pH/Temperature |
| Temperature Resolution | 0.1°C |
| Temperature Accuracy | ±0.5°C |
| Calibration | Automatic, up to 3 points |
| pH Calibration Buffers | 4.01, 7.01, 10.01 |
| Battery Type | 1.5V AAA |
| Battery Life | Approximately 1000 hours |
| Auto-off | 8 minutes |
| Environment | 0 to 50 °C, 100% RH |
Instructions on how to properly connect the probe to the meter.
Procedure for powering the meter on and initial startup sequence.
How to choose between pH and pH-mV measurement modes.
Method to hold and display static readings on the LCD.
Steps to access the calibration function for accurate readings.
Process to access settings for temperature unit, auto-off, and beep.
How to properly shut down the meter.
Instructions for performing pH measurements and initial calibration.
Detailed guide for calibrating the pH sensor using buffer solutions.
Steps for calibrating the meter with a single buffer solution.
Procedure for calibrating the meter with two buffer solutions for higher accuracy.
How to exit calibration mode or reset settings to factory defaults.
Explanation of the indicator for the probe's operational status.
Method to test the electrode's performance and offset/slope values.
Instructions for taking Oxidation-Reduction Potential (ORP) readings.
Accessing and navigating the meter's configuration menu.
Steps to get the electrode ready for use, including rinsing and soaking.
Guidelines for keeping the electrode moist and protected when not in use.
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