TDS Meter

This TDS meter features an amperometric graphite electrode that provides better repeatability in measurements since they do not oxidize. An amperometric measurement of TDS is based on Ohm’s Law, I = V/R where R depends on the distance between two pins and their surface. Oxidation changes both the distance and surface which will affect accuracy. The DiST’s non-oxidizing graphite pins are able to provide an optimal surface for accurate, dependable results.

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Range: 10.00 ppt (g/L)
Resolution: 0.01 ppt (g/L)
Accuracy: ±2% F.S.
TDS Factor: 0.5
Calibration: manual, 1 point
Probe: HI 73302
Temperature Compensation: automatic, 0 to 50°C (32 to 122°F)
Battery Type / Life: 4 x 1.5V / approx. 200 hours of continuous use

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HI 981409 TDS tester has been specifically designed to address the needs of operators in hydroponics, greenhouses and nurseries.
Range 0 to 1999 mg/L (ppm)
Resolution 1 mg/L
Accuracy ±2% F.S.

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This meter includes features such as: a replaceable graphite electrode, adjustable TDS ratio, °C or °F measurement, Automatic Temperature Compensation (ATC) with adjustable β, battery level indicator, stability indicator, automatic shut-off and automatic calibration.
The graphite conductivity electrode provides greater accuracy because it resists contamination by salt deposits in the sample.
All of these features are packed in a floating, waterproof casing. This 3-in-1 tester is unmatched in EC/TDS/ temperature measurements

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ช่วงในการวัดค่า EC:     0.00 to 20.00 mS/cm
ช่วงในการวัดค่า    TDS:     0.00 to 10.00 ppt
ช่วงในการวัดค่าอุณหภูมิ:     0.0 to 60.0°C / 32 to 140.0°F
ความละเอียด EC:     0.01 mS/cm
ความละเอียด  TDS:     0.01 ppt
ความละเอียดอุณหภูมิ:     0.1°C / 0.1°F
ความถูกต้อง EC:     ±2% F.S.
ความถูกต้อง TDS:     ±2% F.S.
ความถูกต้องอุณหภูมิ:     ±0.5°C / ±1°F

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EC Range: 0 to 3999 µS/cm
TDS Range: 0 to 2000 ppm (mg/L)
Temperature Range: 0.0 to 60.0°C
HI 99300 is a portable, EC/TDS/temperature meter. HI 99300 measures low range conductivity in µS/cm and TDS in ppm. It is housed in a case rated for IP67 conditions.

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HI 98360 is a handheld conductivity/TDS/salinity/temperature meter. Users are provided with a series of diagnostic features and messages on the LCD which guide the user through calibration, operation and troubleshooting.

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Range 0.00 to 10.00 ppt
Resolution 0.01 ppt
On-screen tutorial messages for EC/TDS calibration
Automatic Temperature Compensation
BEPS - Battery Error Prevention System turns the meter off in the event that low battery power could adversely affect readings

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HI 8730 EC/TDS meter is lightweight, water-tight and easy to maintain. Each desired measurement mode features its own key for quick selection.

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HI 9034 measures total dissolved solids (TDS) in three ranges and offers the highest accuracy when performing measurements in applications as diverse as HVAC, wastewater treatment and reverse osmosis. All three ranges can be activated at the touch of a button without having to change the conductivity probe.

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EC Range: 0 to 6000 µS/cm
TDS Range: 0 to 3000 ppm
Temperature Range: 0 to 70°C
These EC/TDS meters are lightweight, water-tight and easy to maintain. Each desired measurement mode features its own key for quick selection.

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HI 8033 is a handheld conductivity meter with the ability to take measurements in three different ranges. The four stainless steel rings are embedded in the resin shaft of the probe to create a smooth surface for fast and easy cleaning.

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This meter has been designed for simplicity of use while still retaining  measurement accuracy. Readings are automatically compensated for temperature variations and calibration is manually performed at one point through a knob.

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HI 2300 measures EC, TDS, NaCl and temperature. In conductivity and TDS ranges (up to 500 mS/cm and 400 g/L respectively) the instrument automatically chooses the best scale to maintain the highest accuracy.

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HI 4321 is a research-grade EC/Resistivity/TDS/Salinity benchtop meter with a large, color, graphic LCD with backlight, capable of millesimal measuring resolution of conductivity with an extended range from 0.001 µS/cm to 1 S/cm.

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