TDS Conversion Factor 0.5 ppm (mg/L) = 1 μS/cm
HI 9812-5N PH/EC/TDS/°C PORTABLE METER
HI 9811-5 and HI 9812-5 are pH/EC/TDS waterproof meters designed for simplicity in taking pH, µS/cm, ppm (mg/L) and temperature measurements. both the HI 9811-5 and HI 9812-5 are ideal for hydroponics, greenhouses, farming and ground water applications . Conductivity measurements are automatically compensated for temperature changes with a built-in temperature sensor. The temperature coefficient is fixed at 2%/°C. The specially engineered HI 1285-5 pH/EC/TDS and temperature probe utilizes a fiber junction and gel electrolyte which provide a fast response and reduced contamination. This combination makes the HI 1285-5 particularly suitable to be used in fertilizer solutions. No probe changes are required when switching your measured parameter between pH, conductivity and TDS. These multiparameter meters reduce the number of instruments required for water quality analysis.
pH 0.0 to 14.0 pH
EC 0 to 1990 ìS/cm
TDS 0 to 1990 ppm (mg/L)
Temperature 0 to 60°C
pH 0.1 pH
EC 10 ìS/cm
TDS 10 ppm (mg/L)
(@20°C/68°F) pH ±0.1 pH
EC ±2% F.S.
TDS ±2% F.S.
TDS Conversion Factor 0.5 ppm (mg/L) = 1 ìS/cm
pH Calibration manual, 1 point through offset trimmer
EC/TDS Calibration manual, 1 point through slope trimmer
EC/TDS Temperature Compensation automatic from 0 to 50°C (32 to 122°F) with â = 2% /°C
Probe HI 1285-5 pH/EC/TDS/T, 1 m cable (included)
Battery Type / Life 9V / approximately 150 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH 100%
Dimensions / Weight 144.6 x 79.5 x 37 mm (5.7 x 3.1 x 1.5”) / 230 g (8.1 oz.)