Product information "HI991404 pH/EC/TDS/°C-Monitor with Electrode, ATC - GRO'CHEK COMBO"
This indicator continuously monitors the three most crucial nutrient parameters in hydroponic, greenhouse and horticultural applications.
At startup, HI 991404-02 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.
Order Information: 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.
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)