Extech PH90 Handleiding
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USERMANUAL
WaterproofpH/TemperatureMeter
ModelPH90
PH90‐en‐GB_V1.46/16
2
Introduction
Thank you for Modelselectingthe Extech PH90waterproof pH/Temperature meter.This
instrumentisequippedwith a flatsurface electrodepH (modelpH95)forreliabletestresults.
This tested calibrateddeviceisshippedfully and and,withproperuse,willprovideyearsof
reliableservice.Pleasevisit (www.extech.com)our website to check for the latest version of this
UserGuide,ProductUpdates,ProductRegistration,andCustomer Support.
Features
Rugged, replaceable, flat surface pH electrode(pH95)forquickpHmeasurements
LCD display shows pH and temperature measurements simultaneously
Calibration automatically recognizes buffer solution
PTS (percent of slope) feature alerts user when electrode replacement is necessary
ATC (automatic temperature compensation)
Waterproof design (IP57); meter can float in water
Auto power off after 10 minutes of inactivity
Easy to replace pH electrode
PH90‐en‐GB_V1.46/16
4
Overview
pHOverview
pHis a unit (rangingofmeasure from 0 to14pH)indicating of or ofthedegree acidity alkalinity a
solution. are solutionsSolutionswith a pHlowerthan 7consideredacidic, with a pHhigherthan
7 a 7areknownasbases,andsolutionswith pHofexactly are considered ‘neutral’.
The thanpH pHscaleis if islogarithmicso,forexample, sample‘A’ 1lower Sample‘B’,then
Sample Sample‘A’is10 times moreacidicthan B. A differenceof 1 pHrepresents a ten‐fold
differenceinacidity.
GettingStarted
For new meters, remove the battery cap (1) at the top of the meter and install 2 batteries
observingcorrectpolarity.
Remove the cap from the bottom of the instrument (7) to expose the flat surface electrode and
referencejunction.
Before first use, rinse the electrode with clean tap water and wipe dry.
The sponge should be kept moistened at all times to ensure accuracy.
ReplacingElectrodes
ThePH90is is isshippedwith a flatsurfacepHelectrodeattached(7).Electrodelife limited,and
dependenton of(amongother factors) frequency useandcare.Iftheelectrodeneedstobe
replaced,followthese electrodes.stepsforremovingandconnecting ReplacementpH
electrodes(partnumberpH95) are available from Extech Instruments.
1. the Unscrew electrodecollar(6)clockwise,andremoveitcompletely.
2. the the Pull pHelectrodemoduleoutfrom tester.
3. the Carefully,plug a newelectrodemoduleinto testersocket.
4. the Replaceandtighten electrodecollar to ensure a goodseal.
AutomaticElectrodeRecognition
Whenthe themeteris itpowered, recognizes typeofelectrodethatisconnectedanddisplays
the the theappropriateunitofmeasure.Attach electrodebeforepowering meter;neverpower
themeterwithoutanelectrodeattached.
PoweringtheMeter
The powerbatteries alreadyare installedinthe themeter.Press button(3)topowerONorOFF.
The displayed status strength. The batteryindicatorletsthe theuserknow ofthebattery Auto
Poweroff feature off shutsthemeter automaticallyafter10minutesofinactivitytopreserve
batterylife.
Product specificaties
| Merk: | Extech |
| Categorie: | Niet gecategoriseerd |
| Model: | PH90 |
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