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Home > Multiparameter > Multiparameter Indicators

HI 991404-01

pH/EC/TDS/Temperature Monitor
low range EC & TDS


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  • Waterproof
  • Adjustable TDS ratio and adjustable β
  • Stability indicator and HOLD

 

This indicator continuously monitors the three most crucial nutrient parameters in hydroponic, greenhouse and horticultural applications.

At startup, HI 991404-01 performs a self-check to assure proper working condition. The stability indicator and HOLD function lets the user know when to take readings and freezes the reading on display for easy and accurate recording.

This instrument is supplied with a non-clogging double junction pH electrode as well as a rugged conductivity probe that will withstand even the most aggressive environments. The 12 VDC adapter makes these instruments ideal for all continuous monitoring applications.

Please Note: This item cannot work with a digital ballast.

 

 

 

Order Information:
HI 991404-01 (115V) and HI 991404-02 (230V) is supplied with HI 1293D pH electrode, HI 7630 EC probe (fixed), HI 70004 pH 4.01 buffer solution sachet, HI 70007 pH 7.01 buffer solution sachet, HI 70031 1413 µS/cm calibration solution sachet, 12 VDC adapter and instructions.

  • Specifications
  • Accessories
  • Downloads
Range pH 0.0 to 14.0 pH
EC 0 to 3999 µS/cm
TDS 0 to 2000 mg/L (ppm)
Temperature 0.0 to 60.0°C / 32.0 to 122.0°F
Resolution pH 0.1 pH
EC 1 µS/cm
TDS 1 mg/L (ppm)
Temperature 0.1°C (0.1°F)
Accuracy @ 20°C pH ±0.1 pH
EC/TDS ±2% F.S.
Temperature ±0.5°C (±1°F)
Temperature
Compensation
pH automatic
EC/TDS automatic with ß adjustable from 0.0 to 2.4%/°C
Calibration pH automatic, one or two points with auto-buffer recognition
EC/TDS automatic, one point at 1413 µS/cm or 1382 ppm
TDS Factor   adjustable from 0.45 to 1.00
Environment   0 to 50°C (32 to 122°F); RH max 95% non-condensing
Input Impedance   1012 Ohm
Power Supply   12 VDC adapter (included)
Dimensions/Weight   160 x 105 x 31 mm (6.3 x 4.1 x 1.2) / 190 g (6.7 oz.)
Probes pH HI 1293D PEI body, pre-amplified pH electrode with 1/2” NPT pipe thread, DIN connector and 2 m (6.6’) cable (included);
EC/TDS HI 7630 conductivity probe with 1/2” NPT pipe thread and 2 m (6.6’) cable(fixed)
Electrodes
HI 1293D Spare pH Electrode for pH Monitors
HI 7630 Conductivity & TDS Probe
for use with HI 983301, HI 983302, HI 991404 and HI 991405
Solutions
HI 70030P 12880 µS/cm EC Solution (25) 20 mL Sachets
HI 70031P 1413 µS/cm EC Solution, (25) 20 mL Sachets
HI 70032P 1382 mg/L (ppm) TDS Solution, (25) 20 mL Sachets
HI 70038P 6.44 g/L (ppt) TDS Solution, (25) 20 mL Sachets
HI 70442P 1500 mg/L (ppm) TDS Solution, (25) 20 mL Sachets
HI 70300M Electrode Storage Solution
1 x 230 mL bottle
HI 7061M General Purpose Cleaning Solution
1 x 230 mL bottle
HI 70004P 4.01 pH Buffer Solution, (25) 20 mL
HI 70007P 7.01 pH Buffer Solution
(25) 20 mL sachets
HI 70010P 10.01 pH Buffer Solution
(25) 20 mL sachets

Manual: (Download)

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Product Accessories

Electrodes
HI 1293D
Spare pH Electrode for pH Monitors
HI 7630
Conductivity & TDS Probe
for use with HI 983301, HI 983302, HI 991404 and HI 991405
Solutions
HI 70030P
12880 µS/cm EC Solution (25) 20 mL Sachets
HI 70031P
1413 µS/cm EC Solution, (25) 20 mL Sachets
HI 70032P
1382 mg/L (ppm) TDS Solution, (25) 20 mL Sachets

Product Manuals
  Manual: Download





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