Apera Instruments EC20 Bedienungsanleitung

EC20 Pocket Conductivity Tester

Instruction Manual

APERA INSTRUMENTS, LLC

www.aperainst.com

EC20!Pocket!Conductivity!Tester!Instruction!Manual!

1.!Battery!Installation!

Please!install!batteries!according!to!the!following!steps.!Please!note!polarity:!

!“+”!(anode)!is!upward;!“-”!(cathode)!is!downward!

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!

4.!Calibration!

4.1!Rinse!the!probe!in!distilled!water!and!dry!it.!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!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!

button!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!calibration!solution,!tester!returns!to!

measuring!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.!

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

the!smile!icon!comes!up!and!stays.!

6.!Notes!

6.1!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.!

6.2!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 is damaged.

is pushed before

measurement is stable

( comes up)

Wait for the smile icon to stay,

and then short press

6.3!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!

P1!

Select!conductivity!ranges!

Aut-µS-mS!

Aut!

P2!

Restore!to!factory!default!

No!–!Yes!

No!

7.2!How!to!setup!parameters:!

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

P1-P2→!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)!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!

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!

1000!hours!

Dimensions/Weight!

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

190*165*140mm/438g!

9.!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,!

LLC,!any!malfunctioned!or!damaged!product!attributable!to!responsibility!of!APERA!

INSTRUMENTS,!LLC!for!a!period!of!two!years!from!the!delivery!(a!six-month!limited!

warranty!applies!to!probes).!This!warranty!does!not!apply!to!defects!resulting!from!

actions!such!as!misuse!(violation!of!the!instructions!in!this!manual!or!operations!in!

the!manner!not!specified!in!this!manual),!improper!maintenance,!and!unauthorized!

repairs.!Warranty!period!is!the!time!limit!to!provide!free!service!for!the!products!

purchased!by!customers,!not!the!service!life!of!the!tester!or!probe.!

Apera!Instruments!reserves!the!right!to!update!the!information!in!this!manual!without!giving!notice!in!advance.

APERA INSTRUMENTS, LLC

Address: 977 Old Henderson Rd, Columbus Ohio 43220

Tel: 1-614-285-3080

Email: info@aperainst.com

Website: www.aperainst.com

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