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- Range
+ pH: 0.0 to 14.0 pH
+ TDS: 0 to 1990 mg/L (ppm)
- Resolution
+ pH: 0.1 pH
+ TDS: 10 mg/L (ppm)
- Accuracy @ 20°C
+ pH: ±0.2 pH
+ TDS: ±2% F.S.
- Calibration
+ pH: manual at one or two points
+ TDS: manual at one point
Temperature Compensation: automatic from 5 to 50°C (41 to 122°F) (TDS only)
TDS Conversion Factor: 0.7 ppm = 1 µS/cm
Probes: HI 1286 interchangeable pH electrode (included), HI 7634 TDS probe (fixed), HI 1283 grounding bar with 2 m (6.6) cable (included)
Power Supply: 12 VDC adapter (included)
Environment: 0 to 50°C (32 to 122°F), RH 95%
Dimensions: 165 x 110 x 35 mm (6.5 x 4.3 x 1.3”)
Weight: 300 g (10.6 oz.)
Order Information: HI 981404N-01 (115V) and HI 981404N-02 (230V) are supplied complete with HI 1286 pH electrode, HI 7634 TDS probe, HI 1283 grounding bar, calibration solutions, screwdriver for calibration, 12 VDC adapter and instructions.
