General Tools and Instruments WK2017SD - Manual (Page 3)

INTRODUCTION
Thank you for purchasing General Tools & Instruments’ WK2017SD pH, ORP, Conductivity,
TDS, Salt and DO Meter with Datalogging SD Card. Please read this user’s manual carefully
and thoroughly before using the instrument.
The WK2017SD is a general purpose handheld instrument capable of measuring the pH,
oxidation-reduction potential (ORP) or conductivity of a solution, as well as its TDS
(total dissolved solids), DO (dissolved oxygen) or salt content. Using an included
conductivity/TDS/salt probe, an optional DO probe, and optional ORP and pH electrodes,
the meter can measure pH from 0 to 14, ORP from -1999 mV to +1999 mV, conductivity
up to 200 mS (milliSiemens), TDS up to 132,000 ppm, DO up to 20 mg/L, and salt content
up to 12% by weight.
The meter also accepts an optional automatic temperature compensation (ATC) probe that
configures a pH electrode to measure solutions at temperatures between 32º and 150ºF
(0º and 65ºC). For measuring the pH of solutions at temperatures between 32º and 212ºF
(0º and 100ºC), the temperature compensation can be set manually. pH electrodes must be
calibrated for pH 4, pH 7 and pH 10 using buffer solutions, as do conductivity/TDS/salt
probes and oxygen probes using their own standard solutions.
Among the applications and environments suitable for the WK2017SD are water
conditioning, wastewater monitoring, beverage production, aquaculture (fish farming),
aquariums, pulp and paper processing, electroplating, and photography.
The WK2017SD has the performance and features needed to satisfy the most demanding
aspects of the above applications. A front-panel pushbutton enables rapid switching among
the meter’s four measurement modes.
Because it is microprocessor-based, the WK2017SD can make full use of the portability,
reliability and large storage capacities that SD memory cards offer. Measurements can be
made automatically at any sampling rate between one second and nine hours. After time-
stamping and storing the measurements on an SD card plugged into the meter (a process
called datalogging), the user can remove the card and plug it into to a laptop or desktop
computer either directly or via a USB card reader. The data logs are stored on the card as
files with the .xls extension, which can be opened by Microsoft’s Excel application
The WK2017SD has a backlit 2-1/2 in. diagonal display and is powered by six “AA” Alkaline
batteries or an optional 9-VDC AC adapter.
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