Hanna pH/temp meter

The new HI 991001 and HI 991002 meters from Hanna offer IP 67 waterproof protection in a compact casing. The included multi-parameter electrode has a built-in temperature sensor. No additional temperature probe is required. The electrode also contains a mini amplifier to render your measurements impervious to noise and electrical interference. The large display shows readings in an extended range from -2.00 to 16.00 pH and simultaneously shows temperature from -5.0 to 105.0°C or 23 to 221°F. HI 991002 also measures ORP from -1999 to 1999 mV.

These meters have a stability indicator and hold feature that prompts you when to take the reading & freezes the display for easy and accurate recording. The large display also has graphic symbols to guide you through all operations. The battery life of the meters guarantee over 1500 hours of continuous use. At startup, they perform a self-check and then display the remaining battery level to assure proper working condition. Calibration is performed automatically at one or two points using standard or N.I.S.T. buffers.

• Stability Indicator and Hold Feature insure proper readings
• Battery Life of over 1500 Hours
• Automatic Calibration using N.I.S.T

The new HI 991001 and HI 991002 meters from Hanna offer IP 67 waterproof protection in a compact casing. The included multi-parameter electrode has a built-in temperature sensor. No additional temperature probe is required. The electrode also contains a mini amplifier to render your measurements impervious to noise and electrical interference. The large display shows readings in an extended range from -2.00 to 16.00 pH and simultaneously shows temperature from -5.0 to 105.0°C or 23 to 221°F. HI 991002 also measures ORP from -1999 to 1999 mV.

The mV scale of this meter can be used with the available HI 1296D pH/temperature electrode to check the condition of the pH electrode. These meters have a stability indicator and hold feature that prompts you when to take the reading & freezes the display for easy and accurate recording. The large display also has graphic symbols to guide you through all operations. The battery life of the meters guarantee over 1500 hours of continuous use. At startup, they perform a self-check and then display the remaining battery level to assure proper working condition. Calibration is performed automatically at one or two points using standard or N.I.S.T. buffers.

HI 991001 is supplied complete with HI 1296D pH/temperature electrode, 3 × 1.5 V AA batteries and carrying case.
HI 991002 is supplied complete with HI 1297D pH/ORP/temperature electrode, 3 × 1.5 V AA batteries and carrying case.

SpecificationsHI 991001HI 991002

Ranges:pH-2.00 to 16.00 -2.00 to 16.00
ORP-±1999 mV
Temperature-5.0 to 105.0°C or 23.0 to 221.0°F-5.0 to 105.0°C or 23.0 to 221.0°F

Resolution:pH0.010.01
ORP-1 mV
Temperature0.1°C or 0.1°F0.1°C or 0.1°F

Accuracy: pH±0.02±0.02
(@20°C/68°F):ORP-±2 mV
Temperature±0.5 up to 60°C, ±1°C up to 105°C±0.5 up to 60°C, ±1°C up to 105°C
±1°F up to 140°F, ±2°F up to 221°F±1°F up to 140°F, ±2°F up to 221°F
Typical EMC pH±0.02±0.02
Deviation:ORP-±2 mV
Temperature±0.2°C or ±0.4°F±0.2°C or ±0.4°F

pH Calibration: Automatic 1 or 2 points with 2 set of standardized buffers
(4.01, 7.01, 10.01 or 4.01, 6.86, 9.18)

Temp. Compensation: Automatic from -5 to 105°C (23 to 221°F) (for pH only)

Electrode:HI 1296D combination amplified pH/temperature HI 1297D combination amplified pH/ORP/temperature
with DIN connector and 1 m (3.3′) cable (included) with DIN connector and 1 m (3.3′) cable (included)

Environment:0 to 50°C (32 to 122°F); RH 100%
Battery Type:3 × 1.5 V AA
Battery Life:Approximately 1500 hours of continuous use. Auto-off after 8 minutes
Dimensions:150 × 80 × 36 mm (5.9 × 3.1 × 1.4")
Weight:245 g (8.6 oz.)

Help in selecting the correct electrode can be viewed at Electrode Selection Guide
Hints on Electrode Maintenance

HI 991001 is supplied complete with HI 1296D pH/temperature electrode, 3 × 1.5 V AA batteries and carrying case.