HI 981404N is ideal for agricultural, horticultural and hydroponics applications where pH and TDS levels need to be continuously monitored for optimal plant growth. HI 981404N continuously monitors and displays the pH and TDS values of a solution on an easy to read set of dual LCD's.

The HI 1286 gel filled pH electrode is designed with the BNC connector protected behind a waterproof sheath and when exhausted is replaceable. The unique design of the electrode guarantees greater resistance to clogging in fertilizer solutions with high concentrations of phosphate, nitrate, etc. TDS measurements are performed using the 4-4-2 conversion factor of 0.7 so you do not need to convert the readings. The meter is equipped with a grounding bar to ensure more accurate pH measurements and longer electrode life.

HI 981404N is compact and easy to install and use. This makes it ideal for all continuous monitoring applications.

HI 981404N is supplied with HI 1286 pH electrode, HI 7634 TDS probe, HI 1283 grounding bar, pH and TDS calibration solutions (20 mL each), screwdriver, 12 Vdc adapter and instructions.

Range 0.0 to 14.0 pH; 0 to 1990 ppm (mg/L)
Resolution 0.1 pH; 10 ppm (mg/L)
Accuracy 0.2 pH; 2% F.S.
Calibration manual, 1 or 2 points (pH);
manual, 1 point (TDS)
Temperature Compensation automatic, 5 to 50C (41 to 122F) - TDS only
EC/TDS Conversion Factor 0.7 ppm = 1 S/cm
Probe HI 7634 (TDS probe), HI 1286 (pH electrode)
and HI 1283 (matching pin) - All included
Input Impedance 1012 Ohm
Power Supply 12 Vdc power adapter (included)
Environment 0 to 50C (32 to 122F); RH max 95%
Dimensions 160 x 110 x 35 mm (6.3 x 4.3 x 1.4")
Weight 300 g (10.6 oz.)

Item Specifications
Part Number: 131898
Dimensional Weight: 1 lbs

Additional Documents:   

Instruction Manual

562 KB

Modified: 4/13/2010