Water Conductivity Test Meter

This new Waterproof portable conductivity Meter which is cost-effective is developed to meet requirements of most users. Portable conductivity meter is fully waterproof, shockproof, reliable accuracy and a striking exterior.
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Product Details

conductivity meterFeatures:

IP67 Waterproof

Shockproof

2*AA Battery

User friendly

Conductivity Measurement

High Accuracy

2 data points for Calibration

Automatic Temperature Compensation

Rapid Response

Restore Factory Default

HOLD

Auto Power-Off


Specification:

Conductivity Meter

Mode

Conductivity

TDS

Temperature

Range

0 to 19.99uS

20.00 to 199.9uS

200.0 to 1999uS

2.00 to 19.99mS

20.0 to 100.0mS

0.0 to 9.99ppm

10.0 to 99.9ppm

100 to 999ppm

1.0 to 9.99ppt

10.0 to 100.0ppt

0.0-80.0℃

(32-176℉)

Resolution

0.1

0.01

0.1℉ (0.1℃)

Accuracy

±2% FS

±2% FS

±0.9℉(±0.5℃)

Responding Time

20S

20S

30S

Calibration

At most 2 points

Temperature Compensation

Auto (ATC) from 32-122℉ or 0-50℃

Operating Temperature

32-122℉(0~50℃)


Battery

2*AAA

Probe

Plastic electrode


To determine the temperature coefficient of your sample solution use this formula:

TC = Temperature coefficient

CT1 =Conductivity at Temp. 1

CT2 = Conductivity at Temp. 2

T1 = Temp. 1

T2 = Temp. 2

25 = 25°C

A controlled temperature water bath is ideal for this procedure.

1. Immerse the probe into a sample of your solution and adjust the temperature coefficient to 0% (that is, no compensation) by performing the following:

2. Wait for 5 minutes. Note T1 and CT1 (conductivity at T1).

3. Condition the sample solution and probe to a temperature (T2) that is about 5°C to 10°C different from T1, and note the conductivity reading CT2.

NOTE: Record your results for future reference. Ideally T1 and T2 should bracket your measurement temperature, and should not differ by more than 5°C.

4. Calculate the temperature coefficient of your solution according to the formula shown above.

5. Enter the temperature coefficient you calculated into the meter.

The calculated temperature coefficient will now be applied to all the meter readings.


To determine the conductivity to TDS conversion factor for your solution:

Appendix

1. Factor—the conductivity to ppm TDS conversion factor. Multiply conductivity by this factor to get ppm TDS for the type of TDS reading needed.

2. 442—a formulation that most closely represents the conductivity to ppm relationship, on average, for naturally occurring fresh water.

3. TDS Your Material—These columns are for you to write in your application-specific conductivity-to-ppm values and conversion factors for future reference.

Factor = actual TDS ÷ Actual Conductivity @ 25°C lists some commonly used conversion factors.

Conductivity

at 25°C

TDS KCl

TDS NaCl

TDS 442

TDS Your Material

ppm Value

Factor

ppm Value

Factor

ppm Value

Factor

ppm Value

Factor

1413 μS

744.7

0.5270

702.1

0.4969

1000

0.7078



12880 μS

7447

0.5782

7230

0.5613

11,367

0.8825



water EC

About Conductivity

Conductivity:The conductivity of water is usually used to indicate the purity of water. If the conductivity is high, it means that the content of conductive minerals in water is very high, and the purity of water is very low. If the conductivity is very low, it indicates the minerals that can be ionized in water. Rarely, the purity of water is relatively high. For example, the conductivity of high-purity water is EC=0.1.0us/cm; the conductivity of ordinary drinking water is 1~10 us/c.


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