General WK2017SD User Manual

WK2017SD

USER’S MANUAL

pH, ORP, CONDUCTIVITY, TDS,

SALT AND DO METER

WITH DATALOGGING SD CARD

Please read this manual carefully and thoroughly before using this product.

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operating Instructions . . . . . . . . . . . . . . . . . . . . . 4 – 16

What’s in the case . . . . . . . . . . . . . . . . . . . . 4 –5

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 –8

Calibrating a pH Electrode . . . . . . . . . . . . . . 8 –9

Calibrating the Conductivity/

TDS/Salt Probe. . . . . . . . . . . . . . . . . . . . . . . 10

Calibrating an Oxygen Probe . . . . . . . . . . 10 – 11

Normal Operation . . . . . . . . . . . . . . . . . . . 12 – 14

Holding and Storing Measurements. . . . . . . . . 15

Automatic vs. Manual Datalogging . . . . . 15 – 16

Transferring Data from the SD Card

to a Computer . . . . . . . . . . . . . . . . . . . . . . . 16

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Maintenance & Troubleshooting Tips . . . . . . . . . . . . 18

Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . 18

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . 19

Return for Repair Policy . . . . . . . . . . . . . . . . . . . . . . 19

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 timestamping 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.

KEY FEATURES

• Measures pH, ORP and conductivity, and TDS, salt and DO content using included and optional electrodes and probes

• Measured parameter can be changed by pressing front-panel buttons

• DO measurements can be compensated for salt, altitude and temperature

• Also measures oxygen content of a volume of air

• Optional ATC probe automatically temperature-compensates pH electrode

• Displays maximum and minimum readings

• Performs real-time automatic datalogging at sampling time settable from 1 second to 9 hours

• Also supports manual logging and changing of card storage location

• Outputs Excel-compatible data logs

• Accepts SD memory cards of up to 16 GB capacity

• Big (2.5 in. diagonal) front-panel green backlit LCD is easy to read

• Auto power off function

• Powered by six “AA” batteries or optional 9V AC/DC adapter

OPERATING INSTRUCTIONS

WHAT’S IN THE CASE

The WK2017SD comes fully assembled in a hard carrying case along with a conductivity/TDS/salt probe, a 2 GB SD card and this user’s manual.

Optional accessories available from General Tools & Instruments include:

• pH and ORP electrodes

• A probe for automatic temperature compensation (ATC) of pH electrodes

• A DO probe

• pH 4 and pH 7 buffer solutions

• A 1.413 uS (microSiemens) standard conductivity solution

• A probe-filling electrolyte

• A spare DO probe and diaphragm set

• A 9VDC adapter for a 110V power supply

See the Optional Accessories section of this manual for more details. Figure 1 shows all of the controls and indicators on the front, back, top, bottom and right

side of the WK2017SD. Familiarize yourself with the positions and functions of these controls, indicators and connectors before moving on to the setup procedure.

FRONT

TOP

BOTTOM

RIGHT

SIDE

BACK

Fig. 1. The WK2017SD’s controls and indicators and other physical features

1-1 Liquid-crystal display 1-2 POWER button 1-3 HOLD/ESC button 1-4 REC/ENTER button 1-5 ▲ button 1-6 ▼ button 1-7 TIME button 1-8 LOGGER SET button 1-9 Kickstand 1-10 Battery compartment cover

1-12 Tripod attachment nut 1-13 Socket for ATC temperature probe 1-14 Socket for oxygen probe 1-15 Socket for conductivity/TDS/salt probe 1-16 Socket for pH electrode with

BNC connector 1-17 Socket for 9VDC AC adapter 1-18 Reset button 1-19 RS-232 output jack 1-20 SD card socket

1-11 Battery compartment cover screws

SETUP

1. Choose the power source. Before using the WK2017SD, be sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side (callout 1-15).

To remove the battery compartment cover, remove the two screws holding it in place (callout 1-11). Then install six “AA” batteries in the correct orientation, using the polarity marks on the inside of the compartment as a guide. Replace the cover by replacing the two screws.

2. Install an SD card. To prepare for setup, also install the supplied 2 GB SD memory card or another card with a capacity from 1 GB to 16 GB capacity in the socket on the bottom of the meter (callout 1-18). When installing the card, make sure its gold contacts are facing front and push the card into the socket until you hear a click. To remove the card, push it in until you hear a click and the card pops out.

Now power on the instrument by pressing the POWER button (callout 1-2) to generate a short beep. (To power off the WK2017SD, press the POWER button and hold it until the instrument responds with a long beep.)

When the meter powers on, a series of transient startup screens will briefly appear. Once the display has stabilized, perform the following 13 setup steps in the order presented.

3. Format the SD card. The first step in the setup procedure determines whether or not to format the SD memory card plugged into the instrument. Press the LOGGER SET button (callout 1-8) and hold it for at least five seconds, until “Sd-F” appears in the lower half of the display. Quickly (within three seconds) press the REC/ENTER button.

(If you press buttons too slowly in setup mode, the screen will revert to the normal display. To return to the setup sequence, press and hold the LOGGER SET button again. To move ahead to the next field in the sequence or to the next parameter, press the HOLD/ESC button.)

Pressing the REC/ENTER button causes the word “no” or “yES” to appear over the term “Sd-F”. Press the ▼ button to make a selection. Choose “yES” whenever a new SD card is being used, or when a used card is being repurposed (from use with another SD card instrument or a camera, for example) and all data on it is to be erased. Choose “no” to preserve any data on a card previously used with this instrument.

If you choose “yES”, after you press the REC/ENTER button the instrument will prompt you to confirm that decision by displaying the term “Ent” below “yES” and sounding three beeps. To confirm that you want to begin the erasure/formatting procedure, press the REC/ENTER button. “Ent” will then flash several times and the meter will sound another three beeps to confirm that the SD card has been erased and formatted.

4. Set the date and time. Once the SD card has been formatted, the meter will automatically move to the next step in the startup sequence: setting the current date and time. When the word “dAtE” appears in the center of the display, along with the flashing value “00.00.00” at the lower left, above “yy.mm.dd”, set the current year by pressing the ▼ or ▲ button repeatedly until the correct value appears above “yy”. Press the REC/ENTER button to store the setting. The next screen that appears will have the value

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