Apera Instruments EC20 User manual
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EC20 Pocket Conductivity Tester
Instruction Manual
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APERA INSTRUMENTS, LLC
www.aperainst.com
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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!
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2.!Keypad!Functions!
■Short!press-------!<!2!seconds!!
■Long!press--------!>!2!seconds!
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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;!
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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!
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!!3.!Complete!Kit!
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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.!
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Diagram!-!2!
Diagram!-!3!
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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.!
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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
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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.!
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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!
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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.!
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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.!!!
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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!
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9.!Other!Functions!&!Parameters!
Indication!of!
calibration!points!
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Auto!Power-
off!
Power-off!in!8!
minutes!if!no!
operation!
Indication!of!stable!
measurements!
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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!
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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.!
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Apera!Instruments!reserves!the!right!to!update!the!information!in!this!manual!without!giving!notice!in!advance.
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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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