Oakton Testr TDS Hi, Testr TDS Low, Testr EC Hi, Testr EC Low Instruction Manual

Before you Begin

Remove electrode cap. Soak electrodes for a few minutes in alcohol to remove oils.

Calibration

Tester is factory calibrated. However, to ensure accuracy, calibrate on a regular basis.

Select a calibration standard appropriate for your Testr:

TDSTestr Low: from 200 to 1990 ppm TDSTestr High: from 2.00 to 10.00 ppt ECTestr Low: from 200 to 1990 µS ECTestr High: from 1.00 to 19.90 mS

It is best to select a standard close to the test solution value.

1. Open battery compartment

lid (end with lanyard loop). The two white buttons are Increment (INC) and Decrement (DEC) calibration keys.

2. Rinse electrode in

deionized water, then rinse it in calibration standard, then dip it into a container of calibration standard.

3. Switch unit on (ON/OFF key). Wait several

minutes for display to stabilize.

4. Press the INC or DEC keys to adjust reading to

match the calibration standard value.

5.After 3 seconds without a key press, the

display flashes 3 times, then shows “ENT”. The tester accepts calibration value; returns to measurement mode.

6. Replace battery cap. TDS or Conductivity Testing

Remove electrode cap. Switch unit on (ON/OFF key).

2. Dip electrode into test solution. Make sure

sensor is fully covered.

3. Wait for reading to stabilize (Automatic

Temperature Compensation corrects for temperature changes). Note reading.

4. Press ON/OFF to turn off Tester. Replace

electrode cap. Note: Tester automatically shuts off after 8.5 minutes of nonuse.

HOLD function

Press HOLD key to freeze display. Press HOLD again to release.

Setting TDS Factor (TDSTestrs only)

The TDSTestrs let you select a TDS factor of

0.4 to 1.0.

1. Open battery compartment. With meter on,

press the HOLD key, then press the INCkey (INC key is inside battery compartment; see diagram at left).

2. Press the INC or DEC keys to adjust the TDS

factor.

3. After 3 seconds without a key press, the dis-

play flashes 3 times, then shows “ENT”. Tester accepts TDS factor and returns to measurement mode.

4. Replace battery cap.

Changing Batteries

1. Open battery compartment lid (end with

lanyard loop).

2. Remove old batteries;

replace with fresh ones. Note polarity (shown in battery compartment and in picture at right).

3. Recalibrate after battery

change.

Tester Maintenance

•

To improve performance, clean the electrodes by rinsing them in alcohol for 10-15 minutes. Remove white plastic cup insert to clean viscous solutions.

•

Replace all batteries if low battery indicator appears, or if readings are faint or unstable.

•

If you experience drift, periodically let electrode fully dry.

When you need a new electrode, see “Electrode Replacement” at right.

Specifications

Electrode replacement:

You can replace the electrode module at the fraction of the cost of a new Testr. When the Testr fails to calibrate, gives fluctuating readings in buffers, shows error messages ‘E2’ or ‘OR’in a buffer, and the procedures in the Maintenance section do not help, you need to change the electrode.

1. With dry hands, grip the ribbed Testr collar

with electrode facing you. Twist the collar counter clockwise. (see diagram A). Save the ribbed Testr collar and O-ring for later use.

2. Pull the old electrode module away from the

Testr.

3. Align the four tabs on the new module so

they match the four slots on the testr. (see diagram B).

4. Gently push the module onto the slots to seat

it in position. Push the smaller O-ring fully onto the new electrode module. Push the collar over the module and thread it into place by firmly twisting clockwise.

Warranty:

Each TDSTestr and ECTestr meter body is warranted against defects in materials and workmanship for a period of 12 months from the date of purchase; the electrode module is warrantied for a period of 6 months from the date of purchase. If repair, adjustment or replacement is necessary and has not been the result of abuse or misuse within the 6 month period, please return the Testr—freight pre-paid—and correction will be made without charge. Out of warranty products will be repaired on a charge basis.

Return of Items:

Authorization must be obtained from your OAKTON Distributor before returning items for any reason. When applying for authorization, please include information regarding the reason the item(s) are to be returned.

Note: We reserve the right to make improvements in design, construction and appearance of products without notice. Prices are subject to change without notice.

Waterproof TDSTestr and ECTestr Series Instructions

Rotate collar

away from you

Ribbed Collar

Testr TDS Low TDS Hi EC Low EC Hi

0 to 0 to 0 to 0 to

Range 1990 10.00 1990 19.90

ppm ppt µS mS Resolution 10 ppm 0.10 ppt 10 µS 0.10 mS Accuracy ±1% full scale

TDS Factor

0.4 to 1.0

—

selectable

Calibration 200 to 2.00 to 200 to 1.00 to Standard 1990 10.00 1990 19.90 Range ppm ppt µS mS

Calibration

1 point (calibration range is ±30%

of factory default parameter) ATC 0 to 50°C (2% per °C) Operating

0 to 50ºC Temp.

Four 1.5V alkaline batteries

(Eveready A76BP; supplied) Power 150 hrs. continuous use

Alternate replacement Model

Eveready 303 silver oxide,

70 hrs. continuous use. Dimensions 6.5"L x 1.5" dia. (165 x 38mm) Weight 3.25 oz (90 gms)

INC

DEC

Small O-Ring (hidden)

Large O-Ring

Large Tab

Small Tab

Insert Electrode

Electrode module

keypad

–