General Tools PWM301 User Manual

1. FEATURES

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*The quality of the water is getting much more concerned

by the human being and it also an important factor in the
industrial sectors, laboratories or other fields.

* In industrial sectors, it would be a great help for the

quality of the products if using the good water ( more
pure water ) in the process.

* It may cause several diseases if home drink water existing

high conductivity & contain impurities, the Pure Water

ester ( Water Quality Tester) are designed to check the
purity of water (water conductivity) also can determine
the condition of the " Water Filter " easily and rapidly.

*

he tester is used to measure the conductivity value
( ranging from 0 - 1,999 uS) which can therefore judge
whether water is pure or not. The conductivity value will
become lower if there is much less impurities existed in
water ( for example, distilled water that its purity is higher
than others will get a lower conductivity value of approx.
< 10 uS ).

* Many people always take many kinds of procedures on

water treatment by install the different kinds of
equipment, such as filter or purifier to improve the
quality of water. However, most of people do not
know whether the procedures or filter is effective and
can con- tribute to the quality of water. General
speaking, the impurities will be filtered out if the
water process procedures attain the expected result,
thus we can use this instrument to measure the
conductivity value of purified water and to judge the
effect of the filter (or water process procedures).

* Application : Water conditioning. aquarium, food

processing, photography, school, laboratory, industrial
and quality control.

* Check the condition of water filter.
* Measurement range : 0 to 1,999 uS.
* Pen type, meter with probe, all in 1, easy operation.
* Carbon rod electrode for long life.

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* Build in temperature sensor, ATC ( auto temperature

compensation ).

* IP67, water proof and protection.
* Data hold function for freezing the desired value.
* Auto power off to save the battery life.
* Records max. and min. value with recall.
* Microcomputer circuit, intelligent function, high accuracy.
* Compact size, light weight.
* Power supply by DC 1.5 V battery ( UM4/AAA ) x 4 PCs,

2. SPECIFICATIONS

Display LCD, size : 20 mm x 28 mm.
Measurement 0 to 1999 uS.
Resolution 1 uS.
Accuracy ± ( 3 % + 1 d ) F.S.

* F.S. : full scale.
* 23 ± 5 ℃

Temperature Automatic, 0 to 50 ( 32 to 122 ).℃℉
Compensation
Probe Carbon rod electrode for long life.
Structure
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
Sampling Approx. 0.8 second.

* uS - micro simens cm.

Time
Circuit Custom one-chip of microprocessor LSI

circuit.

Power off Auto shut off saves battery life or

manual off by push button.

* Power will off automatically after

10 min., if no button be pressed.

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