Getting Started - Extech Instruments Exstik Ec500 Bedienungsanleitung

Introduction
Congratulations o nyour purchaseof the ExStikO EC500pH/ConductivitY/TotaI Dissolved
Solids (TDS) I Salinity meter. With the EC500's dynamic cell-constant technology it is
possible to measure a wide range of Conductivity, TDS, and Salinity with the same
electrode.Careful use and maintenance will provide years of reliable service.
Powering the ExStikTM
The ExStikO usesfour (4) CR2032 LithiumIon Batteries (included). If the batteries are
weak,the 'BAT'indicatorappearson the LCD.Pressthe ONIOFFkeyto tum the ExStikØ
onor off.Theautopoweroff featureshutsthe ExStikØ off automatically after10 minutesof
inactivityto preserve batterylife.

Getting Started

Remove the cap from the bottom of the ExStik to expose the pH electrode, reference
junction and conductivity electrodes.
Before the first use or after storage, soak the electrode in tap water or pH 4 buffer
•
solution for about 10 minutes.
White KCL crystals may be present in the cap or on the electrode. This is to be
expected depending on the length of time in storage. These crystals will dissolve
while soaking the electrode or they can be rinsed away with tap water.
For best results calibrate with pH 7 buffer solution first, then calibrate with the buffer
•
solution closest to the expected pH value of the solution or material to be tested.
To preserve the pH electrode life keep the sponge in the protective cap soaked with
•
tap water or pH 4 buffer solution.
For best results, calibrate for conductivity with a standard in the expected range of
•
the sample. For maximum accuracy calibrate from low conductivity value standards
to high value standards.
2 EC500-EU V2.0 5/05
Specifications
2000 count LCD with Bargraph
Display
0.00 to 14.00
pH Range
*0.01 pH typical
pH Accuracy
OOC to 900C(320Fto 1940F)
pH ATC Range
Permanent gel, non-refillable
pH Reference Junction
Oto 199.9pS/cm
Conductivity ranges
200 to 1999pS/cm
2.00 to 19.99mS/cm
Oto 99.9ppm or mg/L
TDS ranges
100 to 999ppm or mg/L
(Variable ratio)
I .00 to 9.99ppt or g/L
Oto 99.9ppm
Salinity range
100 to 999ppm
(Fixed ration of 0.5)
1.00 to 9.99ppt
0.4 to 1.Oadjustable
TDS Ratio
0.5 Fixed
Salinity Ratio
2.0% per Oc
Conductivity ATC
O.OOC t o 90.OOC (32.00Fto 1940F)
Temperature Range
0.1 up to 99.9, 1 >100
Temperature Resolution
I.CF (from O to 50•c; 32 to 12?F)
Temperature Accuracy
5.4'F (from 50 to 90•C; 122 to 194'F)
O.OOC t o 60.OOC (32.00Fto 1400F)
Conductivity ATC Range
Conductivity: ±2% full scale
Accuracy
TDS:
Salinity: ±2% full scale
25 tagged (numbered) readings
Measurement Storage
'BAT' appears on the LCD
Low battery indication
Four (4) CR2032 Lithium Ion Batteries
After 10 minutes (override available)
Auto power off
-50Cto 500C(230Fto 1220F)
Operating conditions
40 x 200 x 40 mm (1.6 x 7.9 x 1.6")
Dimensions
93 g (3.3 oz)
Weight
full scale
EC500„EIJ V2.0 5/05
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