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Water Testing >> Hanna Continuous Reading >> Hanna pH, conductivity, TDS and temp. meter

Hanna pH, conductivity, TDS and temp. meter  PDF File for Hanna pH, conductivity, TDS and temp. meter

Hanna pH, conductivity, TDS and temp. meter

The HI-991404 combines 4 meters into one easy to use wall mounting continuous indicator.

Featuring a large, dual-level, back-lit LCD display the meter can display the temperature of your solution together with the choice of either conductivity, pH or total dissolved solids (TDS).

It also features a reading stability indicator and a hold feature to make it easier to write down a particular reading.


Calibration and temperature compensation is automatic, while the conductivity and TDS conversion factors and temperature coefficients are user adjustable for specific application requirements.

Hanna pH, conductivity, TDS and temp. meterSupplied complete with a non-clog double junction pH electrode and a rugged conductivity/TDS sensor, 12volt power transformer and buffer solutions 4 and 7 together with conductivity calibration solution.


For the full prodcut specification please see the attached instruction manual.


The HI-991404 is supplied somplete with:

  • HI-1293D pH eletcrode
  • Fixed HI-7630 probe
  • pH and EC calibration solutions
  • 12VDC adapter and instructions.



Product Specification Summary

Range:  pH: 0.0 to 14.0 pH; EC: 0 to 3999 uS/cm; TDS: 0 to 2000 ppm (mg/L); Temperature: 0.0 to 60.0C
Resolution: pH: 0.1 pH; EC: 1 uS/cm; TDS: 1 ppm; Temperature: 0.1C
Accuracy: pH: +/-0.1 pH; EC/TDS: +/- 2% F.S; Temperature: +/-0.5C
Calibration: pH: automatic at 1 or 2 points with 2 sets of memorized buffers; EC/TDS: automatic at 1 point
Power supply: 12 Vdc adapter (included)
Dimensions: 160 x 105 x 31 mm
Weight: 190g
Probe: HI-7630 EC/TDS Probe (fixed)
Electrode: HI-1293D pH electrode (included)
Item # Description Price Add to Cart
HI70031Hanna Calibration Conductivity Solution - 1413uS (5 x 20 ml sachets)7.95 Add to Cart
HI991404Hanna pH, conductivity, TDS and temp. meter229.95 Add to Cart
HI77400PHanna Calibration Solution pH 4.01 & 7.01 (5 x 20ml of each)19.95 Add to Cart
HI1293DReplacement pH electrode99.95 Add to Cart
HI7630Replacement EC/TDS Probe69.95 Add to Cart