HANNA® offers you a choice of 2 meters to meet your exacting requirements. HI 991300 and HI 991301 offer you the combination of pH, electro-conductivity, total dissolved solids and temperature. To increase precision, you can select the meter which will work best with your range of conductivity, from purified to brackish waters.
There are only 2 buttons, yet you can select from a range of calibration buffers and even the temperature scale (°C or °F) most familiar to you. The housing is waterproof and rated for IP 67 conditions.
The multi-parameter probe, HI 1288, includes pH, EC/TDS and temperature in one convenient, rugged handle.
Other user selectable features include different TDS factors from 0.45 to 1.00, and a range of temperature coefficients (ß) from 0.0 to 2.4% for greater consistency and reproducibility. Also selectable are standardized buffer recognition values.
To ensure against interference from transient electrical noise, a solid-state amplifier is integrated into the probe.
|Range pH||0.00 to 14.00 pH|
|Range EC||0.00 to 20.00 mS/cm|
|Range TDS||0.00 to 10.00 ppt (g/L)|
|Range Temperature||0.0 to 60.0°C (32.0 to 140.0°F)|
|Resolution pH||0.01 pH|
|Resolution EC||0.01 mS/cm|
|Resolution TDS||0.01 ppt|
|Resolution Temperature||0.1°C (0.1°F)|
|Accuracy pH||±0.01 pH|
|Accuracy EC||±2% F.S.|
|Accuracy TDS||±2% F.S.|
|Accuracy Temperature||±0.5°C (±1.0°F)|
|TDS Conversion Factor||selectable 0.45 to 1.00 with 0.01 increments (default 0.50)|
|pH Calibration||automatic at 1 or 2 points with 2 sets of memorized standard\n(pH 4.01/7.01/10.01 or 4.01/6.86/9.18)|
|EC/TDS Calibration||automatic, 1 point at 6.44 ppt (CONV 0.5)\nat 9.02 ppt (CONV 0.7)\nat 12880 µS/cm (others)|
|Temperature Compensation pH||Automatic|
|Probe||HI 1288, pH/EC/TDS/T, DIN connector, 1 m (3.3') cable (included)|
|Battery Type / Life||4 x 1.5V AAA / approx. 500 hours of continuous use|
|Environment||0 to 50°C (32 to 122°F); RH max 100%|
|Dimensions||150 x 80 x 36 mm (5.9 x 3.1 x 1.4'')|
|Weight||210 g (7.4 oz.)|