Apera Instruments YD300 Bedienungsanleitung

YD300

Portable Water Hardness Meter

User Manual

Apera Instruments, LLC

aperainst.com


 
Table of Contents 
Brief Introduction ............................................................................................................................................................3 
Technical Specifications..................................................................................................................................................4 
Meter Instructions............................................................................................................................................................6 
Operation .........................................................................................................................................................................7 
1. Preparation................................................................................................................................................................7 
2. Notes During Measurement Preparations.................................................................................................................8 
3. Meter’s Calibration: (take B2/B3 calibration method and mmol/L unit as an example)............................................8 
4 Notes in Meter’s Calibration.....................................................................................................................................9 
5 Take Measurement..................................................................................................................................................10 
6 Notes during Measurement Taking.........................................................................................................................10 
7. Electrode Storage....................................................................................................................................................11 
Meter’s Parameter Settings............................................................................................................................................11 
1. Parameter Setting Table..........................................................................................................................................11 
2. Calibration Method Setting (P1).............................................................................................................................11 
3. Measurement Resolution Setting (P2)....................................................................................................................11 
4. Temperature Units Setting (P3)...............................................................................................................................12 
5. ON/OFF Setting of Activation Compensation (P4) ...................................................................................................12 
6. ON/OFF Setting of Background Light (P5)...............................................................................................................12 
7. ON/OFF Setting of Meter Automatic Shutoff (P6)....................................................................................................12 
8. ON/OFF Setting of Restore to Default Setting (P7)...................................................................................................13 
Data Storage/Recall/Deletion..........................................................................................................................................13 
1 Store Measurement Data.........................................................................................................................................13 
2 Recall Measurement Data.......................................................................................................................................14 
3 Clear Stored MeasurementData .............................................................................................................................14 
What’s in the Kit............................................................................................................................................................14 
Warranty........................................................................................................................................................................15 
Appendix ：Error Message and Troubleshooting.........................................................................................................16 
 
 
 
 
 
 
 
 Scan to watch the video tutorial 

1. Brief Introduction

Thank you for purchasing Apera Instruments YD300 Portable Water Hardness Meter. Before using

the product, please read this manual carefully to help you properly use and maintain the product.

For technical support, please contact us at [email protected] or +1 (614)-285-3080.

Waterhardnessisthe total concentration of calcium ion (Ca2+) and magnesium ion (Mg2+) in water.

The meter adopts an electrode method to measure water hardness, which has been proven to have

the same accuracy as the EDTA volumetric method. This product helps solving problems existing

in EDTAmethod such as the complexity of operation and difficulty in reading withthe user-friendly

electrochemical method. This meter is used for high accuracy water hardness measurements and is

ideal for field tests.

Features

•Adopts 601-S 3-in-1 water hardness combination electrode which consists of: measuring

electrode, reference electrode and temperature probe. At the same time, its new structure,

stable electrode potential, quick response and use easily features are more welcomed by

customers.

•The meter adopts an intelligent chip design, which has automatic calibration, temperature

compensation (ATC),data storage; auto-lock and automatic power off, a low potential

displaying function, etc.

•Eight water hardness units can be chosen upon user’s preference: mmol/L, mg/L (CaCO3),

mg/L (CaO), mmol/L (Boiler), mg/L (Ca), ◦fH (France Degree), ◦dH (German Degree) and

◦eH (England Degree).

•Adopts digital filtering technology to intelligently improve meter’s response speed and

result accuracy. A smiling face icon will appear when reading isstable.

•Equipped with B1, B2 and B3 Water Hardness calibration solutions.

•Backlit LCD display.

•IP57 waterproof design.

•Comes in a rugged carrying case equipped with all accessories.

2. Technical Specifications

2.1

Units of Water Hardness and their Conversions

mmol/L —basic unit for water hardness

mg/L (CaCO3) —water hardness based on quality concentration of CaCO3, also known as ppm and

U.S. Degree.

mg/L (CaO) —water hardness based on quality concentration of CaO

mmol/L (Boiler) —special unit for industrial boiler water hardness measurement

mg/L (Ca) —water hardness based on quality concentration of Ca

ºfH—France Degree

ºdH—German Degree

ºeH—England Degree

Units Conversion of Water Hardness

mmoL/L

mg/L

(CaCO3)

mg/L

(CaO)

mmol/L

(Boiler)

mg/L

(Ca)

ºfH

（France

Degree）

ºdH

（German

Degree）

ºeH

（England

Degree）

mmol/L

100

56.1

40.1

5.6

7.0

mg/L(CaCO3)

1.00×10-2

0.56

2.00×10-2

4.01×10-1

0.10

5.60×10-2

7.00×10-2

mg/L

(CaO)

1.78×10-2

1.78

3.57×10-2

7.15×10-1

1.78×10-1

9.98×10-2

1.25×10-1

mmol/L

(Boiler)

5.00×10-1

28.05

20.05

5.00

2.8

3.50

mg/L

(Ca)

2.49×10-2

2.49

1.40

4.99×10-2

2.49×10-1

1.40×10-1

1.75×10-1

ºfH

(France

Degree)

1.00×10-1

5.61

2.00×10-1

4.01

5.59×10-1

6.99×10-1

ºdH

(German

Degree)

1.79×10-1

17.9

10.02

3.57×10-1

7.16

1.79

1.25

ºeH

(England

Degree)

1.43×10-1

14.3

8.01

2.86×10-1

5.73

1.43

8.00×10-1

2.2

Technical Parameters

Water Hardness

Measurement range

(0 to 10) mmol/L; (0 to 401)mg/L(Ca);

(0 to 1000) mg/L(CaCO3); (0 to 100) ºfH (France Degree);

(0 to 561) mg/L(CaO); (0 to 56)ºdH (German Degree);

(0 to 20) mmol/L(Boiler); (0 to 70) ºeH (England Degree)

Resolution

0.01 and 0.1 water hardness units

Accuracy

±5% FS

Temp. compensation range

（5 to 50℃）automatic

Calibration Solution

B1 Calibration Solution —2.00×10-2 mmol/L B2 Calibration Solution —

2.00×10-1 mmol/L B3 Calibration Solution —2.00 mmol/L

Calibration Mode

(a) B1/B2 Calibration—using B1 and B2 Calibration Solution, suitable for <

2.00×10-2 mmol/L low concentration water quality, for example boiler

water.

(b) B2/B3 Calibration—using B2 and B3 Calibration Solution, suitable for general

water quality.

Temperature

Measurement Range

0-60℃ (32 -140ºF)

Resolution

0.1℃

Accuracy

±0.5℃

Other Technical Parameters

Data Storage

99 sets

Stored Content

serial number, measurement, units, temperature and calibration points

Power

Two AA Batteries（1.5V×2）

Dimension and Weight

Meter：(65×120×31)mm/180g; Carry Case：(255×210×50)mm/790g

Quality and Safety

Certificate

ISO9001:2015, CE, RoHS

Working conditions

Working Temperature

5-35℃ (41-95ºF)

Working Humidity

≤85%

Waterproof Rating

IP57 Waterproof and Dustproof

3. Meter Instructions

3.1.

LCD Display

① —Water hardness reading; adopts a modular form to express e.g. means 2.00×10-1.

② —Measurement units; appears by following order: mmol/L, mg/L(CaCO3), mg/L(CaO),

mmol/L(Boiler), ºfH , ºdH , ºeH and mg/L(Ca).

③ —Measurement stable reading icon; When icon is flashing—measurement is not stable; When

icon is not flashing—measurement is stable.

④ —Calibration solution indication icon, for example flashing means should calibrate with

B1 solution.

⑤ —Low voltage icon, remind user to change batteries.

⑥ —Temperature value and its units.

⑦ —M+—icon for storing measurements, RM—icon for recalling measurements; The digit

on the left side of icon indicates the storage serialnumber.

⑧ —Calibration icon, Cal 1 means first point calibration, Cal 2 means second point calibration.

3.2.

Keypad

This meter has a total of five operating keys.

Power button

Button to control backlight; short press this button to turn on backlight, Long

Press this button (press time > 2 seconds) to enter parameter setting mode

Calibration button, press this button to enter meter’s calibration mode.

Button for unit switch and confirmation, when in measurement mode, press the

button to change measurement unit; When in parameter setting, press the button

to confirm change in settings.

Button for storing and recalling measurement data. Short press this button to

store measurement data, Long press this button to recall stored measurement

data. In parameter setting, the button can change digit or ON/OFF status.

4. Operation

4.1.

Preparation

4.1.1. Electrode’s Activation

(a)For first-time use —see picture (4-1), shake electrode with

force to let the inner solution of electrode fall into the

measuring head compartment; there should NOT be any

bubbles within the measuring head. Pour a small amount of

soaking solution into the soaking solution vial, and soakthe

electrode for 30 minutes.

(b) Regular Usage —The activation time only takes 10 to 15

minutes for a frequently used electrode. As long as the

reading is stable, users can start to perform calibration and

measurements (please note that the readings without

electrode being immersed in solutions are random).

4.1.2 Pour B2 and B3 calibration solution into the corresponding vials of “B2” and “B3”.

4.1.3 Choose meter’s calibrating methods, resolution, water hardness units and other measurement

parameters.

4.2.

Notes During Measurement Preparations

4.2.1 When using, shake the electrode with force to make the inner solution of electrode fall into the

compartment of the measuring head. There shouldn’t be any airbubbles in the measuring head.

4.2.2 When soaking or calibrating electrode, the calibration vial should be placed in the black metal

pedestal toavoid spills.

4.3.

Meter’s Calibration: (take B2/B3 calibration method and mmol/L unit as an example)

4.3.1 Power on the meter. Press , and icons

appear and are flashing at the same time, indicating the

meter enters 1st point calibration; the calibration solution

is B2, see picture (4-2).

4.3.2 Rinse the electrode in distilled/deionized water and shake off

excess water; insert theelectrode into B2 calibration solution

and gently stir the electrode for a few seconds and let it stand still;

Wait for the reading to fully stabilize (about 2 minutes).

4.3.3 Then press to confirm calibration, “2.00×10-1mmol/L” icon starts flashing (see picture (4-3),

indicating 1st point calibration will be finished after approximately 20 seconds. During the icon

flashing, do NOT press any key.

NOTE: The reading may be temporarily stable in about 30 seconds, but we recommend waiting about 2

minutes for the reading to get fully stabilized before pressing to confirm calibration. This practice

will significantly improve the accuracy of calibration.

4.3.4 Then and icons will appear and start flashing, indicating the meter enters 2nd point

calibration mode; the calibration solution isB3.

4.3.5 Rinse the electrode in distilled/deionized water and shake off

excess water; insert it into B3 calibration solution; stir the

electrode for a few seconds and let it stand still. Wait for the

reading to fully stabilize (about 2 minutes).

4.3.6 Press button to confirm the 2nd point calibration,

“2.00 and mmol/L”icon starts flashing (see picture (4-4)); calibration will be finished after

approximately 20 seconds. During the icon flashing, do NOT press any key. The meter then returns to

measurement mode.

4.3.7 To verify the calibration quality: Rinse the electrode in distilled/deionized water and shake off

excess water; then put it into the B2 solution, stir for a few seconds and let it stand still; take the

reading after appears and stays; The reading should be close to 2.00 ±0.25×10-1 mmol/L.

Otherwise, please repeat the calibration process (4.3.1 to 4.3.3).

4.4

Notes in Meter’s Calibration

4.4.1 For first time use, the new electrode is recommended to be calibrated two times.Wheninserting

the probe into calibration solutions for the first time, sometimes there will be a large deviation

in the reading, even showing an unchanging “1.00×103mmol/L” (indicating an overflow

display);this is normal and can be corrected in the second time ofcalibration.

4.4.2 The two-point calibration method is recommended for the best water hardness accuracy; a

calibration curve will be established after two-point calibration is performed. Therefore, the

correct values will be displayed only after calibration.

4.4.3 Because the meter does not have automatic recognition for the calibration solutions, user must

place electrode into the right calibration solution according to / / icons flashing on

the LCD. If the wrong calibration solution is used, the meter would generate significant

inaccuracy while testing samples. You will need to repeat calibration if this happens.

4.4.4 Because B1, B2 and B3 calibration solutions are no buffers. They are easy to be contaminated.

This is especially the case for the low concentration B1 solution. These solutions generally can

be used 4 to 5 times before replacement. Users need to pay attention to ensure the solutions do

not get contaminated.

4.5

Take Measurement

Pour your sample solution into the #1 or #2 sample vial (bottle). Rinse

electrode with distilled/deionized water and shake off excess water; insert

the probe into sample solution, stir gently and let it stand still; when

icon appears and stays, take the reading. Press to save the

measurement data. As shown in picture (4-5), calibrating method is B2 and

B3, temperature of solution is 25.0℃, water hardness measurement is 2.88×10-1, unit is mmol/L,

press to switch to other units.

4.6

Notes during Measurement Taking

4.6.1 Electrode must be rinsed thoroughly with distilled/deionized water before measuring. The

container for diluted and concentrated solutions should be separated. When testing, try to test

diluted solution first and then test concentrated solution.

4.6.2 Generally, calibration is necessary before every test, but if interval between tests is short, then

calibration isnot necessary; To test ifthe meter is due for calibration, simplyinsert the electrode

in one of the calibration solutions and wait for a stable reading. If the reading is within the

stated error range, then it is unnecessary to recalibrate.

4.6.3 When testing boiler water, users should choose B1/B2 calibration method, and add Ionic

Strength Buffer (TISAB) into B1, B2 calibration solution and soaking solution. Otherwise, it

will cause a significant measurement error; the proportion is add 50.4mg ACS grade Sodium

Bicarbonate (NaHCO3) per 100mL solution.

4.6.4 According to the isothermal measurement principle, the closer the test sample’s temperature is

to the calibration solution’s, the higher the accuracy of the measurement. So this principle is

recommended to follow when conducting tests. For general testing, the temperature discrepancy

between calibration solution and sample solution should be less than 15°C; for high accuracy

testing, the temperatures of calibration solution and sample solution should be consistent.

4.6.5 The sensor membrane of the electrode might become turbid after usage, which is a normal

phenomenon.

4.6.6 During usage, if you findthe PVC sensor membrane in the electrode measuring head is seriously

concave, please first screw it loose, then screw it tight, and then shake it forcefully for several

times to eliminate the air bubble, which should solve the problem.

4.6.7 When the concentration of sample solution is greater than 1.00×10mmol/L, icon will

display on the left-bottom corner, reminding users to dilute the sample solution 10 times before

testing; then multiple the readings by 10 to get the realreadings.

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