Apera Instruments EC20 Manuel utilisateur

EC20 Pocket Conductivity Tester

Instruction Manual

APERA INSTRUMENTS (Europe) GmbH

www.aperainst.de

v2.2

EC20 Pocket Conductivity Tester Instruction Manual

1. Battery Installation

Please install batteries according to the following steps. *Please note the correct

direction of battery installation:

The Positive Side (“+”) OF EVERY SINGLE Battery MUST FACE UP.

(WRONG INSTALLATION OF BATTERIES WILL CAUSE DAMAGE TO THE

TESTER AND POTENTIAL HAZARDS!)

2. Keypad Functions

■Short press------- < 2 seconds

■Long press-------- > 2 seconds

1. Short press to turn on, long press to turn off;

2. When turned off, long press to enter setup;

3. In mode setting, short press to change

parameter;

1. When turned on, long press to enter

calibration mode.

2. In calibration mode, short press to confirm

calibration;

3. In mode setting, short press to confirm

parameter selection.

Diagram - 1

3. Complete Kit

(batteries are pre-installed)

4. Calibration

4.1 Rinse the probe in distilled water and dry it with a clean

tissue. Short press to turn on the tester.

4.2 Long press to enter calibration mode; Short press

to exit.

4.3 Dip the probe into 1413 µS/cm calibration solution. Stir gently, leave it to

stand, LCD displays (Diagram 3), short press to complete 1-point

calibration. The tester returns to measuring mode, and calibration icon

appears at the bottom left of LCD.

4.4 Rinse probe in distilled water and dry it. Follow the steps in 4.2-4.3 to

complete 2nd point calibration in 12.88 mS/cm calibration solution, tester returns

to measurement mode, calibration icons display on bottom left of LCD.

Diagram - 2

Diagram - 3

5. Conductivity Measurement

5.1 Short press to turn on tester. Rinse probe in distilled water and dry it

with a clean tissue to remove excess water.

5.2 Stir the probe in the sample solution gently, leave it to stand. Get readings

after the smile icon comes up and stays.

5.3 Rinse off the tester thoroughly in distilled water after each test.

6. Notes

6.1 If it’s first time use or the tester hasn’t been used for a long time, we

recommend soaking the probe in 12.88 mS/cm solution for 15-30 minutes to

restore its sensitivity and speed up the response time.

6.2 The tester adopts 1413 µS and 12.88 mS standard calibration solutions. Users

can use 1-2 point calibrations as needed. For most circumstances, calibrating in

1413 µS to complete 1st point calibration will meet testing requirements.

6.3 Unit Information: 1 mS/cm = 1000 µS/cm

Once the readings are greater than 2000µS/cm, the unit will automatically

become mS/cm.

6.3 The tester has self-diagnosis functions:

Symbol

Self-Diagnosis information

How to fix

Wrong calibration solution,

which exceeds the

recognizable range of the

meter.

1. Check if calibration solution is

correct

2. Check if probe isdamaged.

is pushed before

measurement is stable

( comes up and stays)

Wait for the smile icon to stay,

and then short press

6.4 The tester has already been calibrated after manufacture. Usually users can

use the tester right away, or test it in the calibration solutions to test its

accuracy. When error is large, calibrate it before using.

7. Parameter Setting

7.1 Parameter setting reference chart:

Symbol

Parameter Setting content

Code

Factory Default

Select conductivity ranges

Aut-µS-mS

Aut

Select Temperature Unit

°C - °F

°C

Restore to factory default

No –Yes

7.2 How to setup parameters:

When turned off, long press to enter setup →short press to switch

P1-P2-P3→Short press , parameter flickering→short press to choose,

short press to confirm parameter selection→Long press to switch off.

7.3 Parameter setting notes

a) Select conductivity ranges (P1):

Aut-- All ranges: 0 –199.9 µS/cm, 20 –1999 µS/cm, 2.0 –20.0 mS/cm;

Factory default is Aut.

b) P2-Select temperature unit (℃–℉)

In P1 mode, press to enter P2, press , ℃( or ℉) flickering, press to

choose℃–℉, press to confirm parameter selection. Long press to

return to measurement mode.

c) Restore to factory default:

Select Yes to restore the calibration to the theoretical values and parameter

setting to original values. When meter’s calibration or measurement performs

abnormally, this function can be adopted so the meter goes back to factory

default setting and then users can conduct calibration or take measurements

again.

8. Technical Specifications

Conductivity

Range

0 –200.0 µS/cm, 0 –2000 µS/cm, 0 –

20.00 mS/cm

Resolution

0.1/1 µS/cm, 0.01 mS/cm

Accuracy

±1% F.S±1 digit

Calibration points

1-2 points auto calibration

Automatic Temp.

Compensation

0-50˚C

Temp.

Range

0-50˚C

Resolution

0.1˚C

Accuracy

±0.5˚C

9. Other Functions & Parameters

Indication of

calibration points

Auto Power-

off

Power-off in 8

minutes if no

operation

Indication of stable

measurements

Waterproof

level

IP67, floats on water

Self-Diagnosis

information

Er1, Er2

Power Supply

AAA batteries*4

Low battery

reminder

Flashes to

remind to replace

batteries

Battery Life

Up to 1000 hours of

continuous operation

Dimensions/Weight

Instrument: 40*31*178mm/107g; Carrying case:

190*165*140mm/438g

10. Warranty

We warrant this instrument to be free from defects in material and

workmanship and agrees to repair or replace free of charge, at option of

APERA INSTRUMENTS (Europe) GmbH, any malfunctioned or damaged

product attributable to responsibility of APERA INSTRUMENTS (Europe)

GmbH for a period of two years from the delivery (a six-month limited

warranty applies to electrodes). Warranty period is the time limit to provide

free service for the products purchased by customers, not the service life of

the tester or electrodes.

This limited warranty does not cover any damages due to:

i. transportation;

ii. storage;

iii. improper use;

iv. failure to follow the product instructions or to perform any preventive

maintenance;

v. modifications;

vi. combination or use with any products, materials, processes, systems or

other matter not provided or authorized in writing by us;

vii. unauthorized repair;

viii. normal wear and tear; or

ix. external causes such as accidents, abuse, or other actions or events

beyond our reasonable control.

APERA INSTRUMENTS (Europe) GmbH

Wilhelm-Muthmann-Straße 15

42329 Wuppertal, Germany

Contact: info@aperainst.de

Website: www.aperainst.de

Tel. +49 202 51988998

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