Extech Instruments Exstik EC500 Bedienungsanleitung Seite 11

Meter Description
Front Panel Description
Battery compartment cover
1.
2. LCD Display
3. MODE/HOLD button
CAL/RecaII button
4.
5. ONIOFF button
6. Electrode Collar
pH/Conductivity Electrode
7.
(Note:The Electrode cap is not shown)
LCD Display
Bargraph display
1.
2. Measurement units
2
Main display
3.
4. Range calibration and
3
low battery indicators
5. Temperature display
6. Renew indicator
7. Reading hold indicator
4
2
106.9
3
4
5
7
1
2ppm PS
12
O.O.O.O
4
@ @ @ BAT
- 8.8.8•.:
6
7
HOLD
EC500-EU V2.0 5/05
Measurement Procedure
Sample Preparation:
ForConductivity, TDSorSalinity placethetestsample in
a samplecupwith enoughdepth(2.5cmminimum) t o
cover the electrode. Stir the solutionto remove any air
bubbles.
ForPH,placethetip of the electrode in the sampleor
2.
make contact with a wet surface.
Measurement:
Press theONbutton. ( 8888 andthen"SELF CAL" will
I.
appear i nthedisplay during theturn-on diagnostics)
Depress andholdtheMODE/Hold keyto scroll t othedesired
2.
measurement mode.
Insert the electrode into the sample making sure that the
3.
electrodes are completety submersed.
Slowlystirthe solutionwiththe electrode to removeairbubbles
4.
if in the Conductivity,TDS or Salinity mode.
If in theConductivity, TDSor Salinitymodes,the meterwill
5.
auto-range to the properrangeandthendisplaythe reading
Conductivity TDS(ppm)
5.0 25.0 •c
qoi
-l B.E.F
Conductivity
TDS
Salinity
169
TDS(mg/l)
25.0
Salinity
25.0
EC500-EU V2.0 5/05
5