The HI991003 is a compact, watertight portable pH / pH-mV / ORP / temperature meter, supplied complete with hard case and titanium body pH / ORP electrode and built-in temperature sensor.
This instrument is equipped with Sensor Check ™ technology for checking sensor status.
The meter features a large two-level display for easy viewing of pH, pH-mV, ORP, temperature and electrode status indicators at any time.
The operation of the instrument is simplified with the use of two buttons.
The battery life of HI991003 is approximately 1200 hours of continuous use.
Automatic temperature compensation
Two-point automatic calibration
Waterproof
The HI991003 instrument features a large multi-level display that displays pH / ORP and temperature measurements simultaneously with 0.01 pH resolution and ± 0.05 pH accuracy.
Indicators for calibration status, stability and even tutorial messages can be shown on the display.
The HI991003 is equipped with many advanced features that can be found in more expensive portable instruments, including Sensor Check technology, automatic calibration, standard solution recognition, and temperature compensation.
The battery level is displayed when the instrument is turned on.
Main features
Waterproof
- Designed to float if accidentally dropped into a tank.
Sensor Check TM
- Allows the user to check the condition of the electrode at any time.
Extended pH and ORP ranges
- PH range from -2.00 to 16.00 pH
- ORP range ± 1999 mV
Two-point automatic calibration
- Automatic one or two point calibration with two sets of selectable standard solutions (4.01, 7.01 and 10.01 or NIST 4.01, 6.86, and 9.18).
Automatic temperature compensation
- All measurements are compensated for temperature variations.
- The temperature is displayed in ° C or ° F together with the measured pH value.
Stability indicator
- The instrument displays an indicator (clock) which disappears when the measurement is stable.
HOLD button
- Blocks the reading on the display to allow the user to record it.
BEPS (Battery Error Prevention System)
- The meter turns off automatically if the battery is low and cannot guarantee accurate measurements.
Percentage% of battery at power on
Low battery indicator
- When the level is below 5%, the battery symbol will flash on the display.
Automatic shutdown
- The meter turns off automatically after 8 minutes of inactivity to save battery.
HI991003 is supplied complete with:
HI12973 pH / ORP probe with internal temperature sensor,
HI70004 standard solution pH 4.01 in sachet (20 mL),
HI70007 standard solution pH 7.01 in sachet (20 mL),
HI700661 electrode cleaning solution in sachet (2 x 20 mL),
batteries,
instruction manual and hard case.