INSPECT PWH-303 Pure Water Hardness User Manual

INSPECT PWH-303 Pure Water Hardness

Product Information

• All in one pen type Pure water meter provides fast, accurate
  readings with digital reading.

• Pure water measurement (uS) or Hardness (ppm) can be
  selected.

• Pure water: 2,000 uS. Hardness: 1,000 ppm.

• Pt glass electrode for long life.

• Built-in temperature sensor, ATC (auto temperature
  compensation).

• Temperature measurement.

• IP67, waterproof and protective.

• LCD with two displays show conductivity and Temp. value at same
  time.

• Data hold function for freezing the desired value.

• Auto power off to save battery life.

• Records max. and min. value with recall.

• Microcomputer circuit, intelligent function, high
  accuracy.

• Compact size, lightweight.

• Power supply by DC 1.5 V battery (UM4/AAA) x 4 PCs.

• Available for wide applications, such as aquariums, beverages,
  fish hatcheries, food processing, photography, laboratory, quality
  control, school & colleges, swimming pools, water
  conditions.

Specifications|

• Display: LCD, size: 20 mm x 28 mm.

• Measurement Ranges:

  • Conductivity (uS)
  • Hardness (ppm)
  • Temperature (°C)

• Accuracy:

  • Conductivity: 2000 uS
  • Hardness:

• Temperature Compensation: Freeze the display reading.

• Data Hold Memory Recall

• Sampling Time: Approx. 0.8 second.

• 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.

• Operating Temperature: 0 to 50 °C (32 to 140 °F).

• Operating Humidity: Less than 80% RH.

• Power Supply: DC 1.5V battery (UM-4/AAA) x 4 PCs.

• Power Consumption: Approx. 5.7 mA.

• Dimension: 190 x 40 x 40 mm (7.5 x 1.6 x 1.6 inch).

• Weight: 171 g/0.38 LB.

Standard Accessories|

• Instruction Manual – 1 PC

Optional Accessories|

• CDPB-04 – 1 PC
• Soft carrying case with sash

Product Usage Instructions

To use the Pure Water / Hardness Meter (Model: PWH-303), please follow the instructions below:

1. Ensure that the Meter is powered by inserting four DC 1.5V batteries (UM4/AAA) into the designated battery slots.
2. Turn on the Meter by pressing the power button.
3. Select the desired measurement mode by choosing between Pure Water (uS) or Hardness (ppm).
4. Dip the conductivity probe into the water sample to be measured.
5. Wait for the reading to stabilize on the LCD display.
6. If needed, use the built-in temperature sensor for temperature measurement.
7. Use the data hold function to freeze the desired value on the display.
8. After use, turn off the Meter to save battery life by pressing the power button.

The Pure Water / Hardness Meter is suitable for various applications such as aquariums, beverages, fish hatcheries, food processing, photography, laboratory work, quality control, schools & colleges, swimming pools, and water conditions.

Your purchase of this Pure Water / Hardness . marks a step forward for you into the field of precision measurement. Although this Meter is a complex and delicate instrument, its durable structure will allow many years of use if proper operating techniques are developed. Please read the following instructions carefully and always keep this manual within easy reach.

FEATURES

• All in one pen type Pure water meter provides fast, accurate readings with digital reading.
• Pure water measurement ( uS ) or Hardness ( ppm ) can be selected.
• Pure water : 2,000 uS.
• Hardness : 1,000 ppm.
• Pt glass electrode for long life.
• Build in temperature sensor, ATC ( auto temperature compensation ).
• Temperature measurement, ℃, ℉.
• IP67, water proof and protection.
• LCD with two displays show conductivity and Temp. value at same time.
• 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,
• Available for wide applications, such as aquarium, beverage, fish hatcheries, food processing, photography, laboratory, quality control, school & colleges, swimming pools, water conditions.

SPECIFICATIONS

*  Hardness (ppm )

*  Temperature ( ℃,℉)

Ranges| Conductivity:

2000 uS

Hardness :

1,000 ppm

Accuracy

* 23 ±5 ℃

| ± ( 2% FS + 1 d )

* FS : full scale

Temperature Compensation| Automatic from 0 to 60 ℃ (32 – 140 ℉),

with temperature compensation factor

variable between 0 to 5.0% per C.

Conductivity Probe

Structure

| Pt glass electrode for long life.
Data Hold| Freeze the display reading.
Memory Recall| Maximum & Minimum value.
Sampling

Time

| Approx. 0.8 second.
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.

Operating

Temperature

| 0 to 50 ℃ ( 32 to 140 ℉ ).
Operating

Humidity

| Less than 80% RH.
Power Supply| DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
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Power

Consumption

| Approx. 5.7 mA.
Dimension| 190 x 40 x 40 mm

( 7.5 x 1.6 x 1.6 inch ).

Weight| 171 g/0.38 LB.
Standard

Accessories

| Instruction Manual…………………………………………. 1 PC

CDPB-04…………………………………………………….. 1 PC

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.

Optional

Accessories

| *     Soft carrying case with sash

( 210 x 80 x 50 mm ), Model : CA-52A

*     Hard carrying case

( 280 x 195 x 65 mm ), Model : CA-06

*     1.413 mS Conductivity Standard Solution, Model : CD-14A

Electrical Specifications (23±5 ℃)

A. Conductivity

• F.S. – Full scale

*    Auto range.

*    Temperature Compensation :

Automatic from 0 to 60 ℃ ( 32 – 140 ℉ ), with temperature compensation factor variable between 0 to 5.0% per C.

• mS – milli Simens                    uS – micro Simens                      23±5 ℃

B. HARDNESS (ppm )

• F.S. – Full scale

*    Auto range.

• Temperature Compensation :

Automatic from 0 to 60 ℃ ( 32 – 140 ℉ ), with temperature compensation factor variable between 0 to 5.0% per ℃ .

• ppm – parts per million                        * 23±5 ℃

Remark:
general the following table describes the water hardness measurement.

C. Temperature

* @ 23±5 ℃

Above specification tests under the environment RF Field Strength less than 3 V/M & frequency less than 30 MHz only.

FRONT PANEL DESCRIPTION

1. Battery compartment/Cover
2. Display
3. Power Button
4. Hold Button, Func. Button
5. REC Button ( Unit Button )
6. Conductivity Electrode input socket
7. Conductivity Electrode head
8. Conductivity Electrode plug
9. Conductivity Electrode handle

MEASURING PROCEDURE

Conductivity measurement

1. Turn on the meter by pressing the ” Power Button ” ( 3-3, Fig. 1 ) momentarily.
   Press the ” Power Button ” ( 3-3, Fig. 1 ) momentarily again will turn off the meter.
   The ” Display ” ( 3-2, Fig. 1 ) will show the unit as:
   Now the meter is ready for the conductivity measurement

2. Electrode probe plug ( 3-8 Fig 1 ) into the meter conductivity Electrode input socket ( 3-6 Fig 1),Hold the conductivity Electrode probe by hand and immerse the ” Sensing Electrode head ” ( 3-7, Fig. 1 ) immersed wholly into the measured solution. Shake the ” Sensing Electrode ” to let the electrode’s internal air bubble drift out from the sensing Electrode.
   ” Display ” ( 3-2, Fig. 1 ) will show the conductivity ( uS ) values, at the same time the left bottom display will show the Temp. value of the measured solution.

Hardness measurement

Same procedures as above ” 4-1 Conductivity measurement ” but should select the measuring unit to ” ppm ” at first, the procedures are following : Press ” Func Button ” ( 3-4, Fig. 1 ) continuously at least two seconds until the ” Display ” show the unit ” ppm ” instead of ” uS “, then release the button.
Now the meter is ready for Hardness (ppm) measurement.

Data Hold

1. During the measurement, press the ” Hold Button ” ( 3-4, Fig. 1 ) momentarily to hold the measured value. The LCD will show a ” HOLD ” symbol.
2. Press the ” Hold Button ” once again to release the data hold function

Data Record ( Max., Min. reading )

1. The data record function records the maximum and minimum readings. Press the ” REC Button ” ( 3-5, Fig. 1 ) momentarily to start the Data Record function, shows ” REC ” on the display.

2. With the ” REC ” symbol on the display.

3. Press the ” REC Button ” ( 3-5, Fig. 1 ) momentarily, the ” REC MAX ” symbol along with the maximum value will appear on the display.

4. Press the ” REC Button ” ( 3-5, Fig. 1 ) momentarily again, the ” REC MIN ” symbol along with the minimum value will appear on the display.
   When display shows ” REC MAX ” or ” REC MIN “, press the ” Hold Button ” ( 3-4, Fig. 1 ) momentarily will delete the max. ( min. ) value, the display will show the ” REC. ” only and execute the memory function continuously.

5. To exit the memory record function, press the ” REC ” button for 2 seconds at least. The display will revert to the current reading, not show ” REC ” indicator.

Change Temp. unit ℃, ℉

1. The temperature units can be selected to ℃ or ℉.
2. Pressing the ” REC Button, Unit Button ” ( 3-5, Fig. 1 ) continuously at least 2 seconds, then Temp. unit will change from ℃ to ℉ or ℉ to ℃.
3. After the temperature unit is selected, it will be memorized into the memory circuit . If power off and on again will present the existing selection Temp. unit.

Auto power off management

The meter has built-in “Auto Power Shut-off ” function in order to prolong battery life. The meter will switch off automatically if none of the buttons are pressed within 10 min..

CALIBRATION

The meter already made the calibration precisely during the production in the factory. When the user get the meter, the calibration are not necessary. However after use the meter for a long period, if necessary to make the calibration, please contact the distributor and should calibrated by the authorized technician people only.

REPLACEMENT OF BATTERY

1. When the LCD display show ” ” , it is necessary to replace the battery. However, in-spec measurement may still be made for several hours after Low Battery Indicator appears before the instruments instrument become inaccurate.
2. To replace the battery, rotate and remove the ” Battery Cover ” ( 3-1, Fig. 1 ), take out the old batteries, install new batteries : DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
3. When install the batteries, should make attention the battery polarity.
4. After install the batteries, reinstall the battery cover again.

OPTIONAL ACCESSORIES

Hard carrying case. Model : CA-06

280 x195 x 65 mm

| Soft carrying case. Model : CA-52A

210 x 80 x 50 mm

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