CWP TDSWand PPM/EC/CF User manual

© 2008 CWPInstruments 1.888.433.6867 www.cwpmeters.com
Last Updated January 29, 2010
Operating Instructions for the TDSWand PPM/EC/CF meter
Specification: TDSWand PPM/EC/CF meter
Range: 0.0 – 100.0 CF0.00 – 10.00 EC 0 - 9990 PPM
Resolution: 0.1 CF 0.01EC 10 PPM
Accuracy: ±2% FS
Operating Temp: 5 - 45°C (ATC)
Calibration: One point 1382ppm / 2.7 EC / 27 CF (Approx. 500 PPM to 1 EC)
Power supply: 9v DC battery
Size: 312mm L x 37mm W x 25mm D
Weight: 5.1 ounces
Waterproof to 1 inch (25 mm) below display only. Avoid splashing on or above display.
Replacement or Repair Warranty: 12 months for defective parts and materials from date of
manufacture. Proof of purchase required. Warranty does not cover submersion in liquids, battery
corrosion or abuse.
Operating Manual for the TDSWand PPM/EC/CF meter
1. The meter can be turned ON or OFF by pressing “on/off’ button. This meter has an auto OFF
function to help protect battery life.
2. Select your preferred measuring scale by pressing the “PPM” or “EC/CF” button. The indicator
light by the left side of display window will show the selected scale. For example, when pressing
the “PPM” button, the light beside the “PPM”
indicator will be ON and indicates you are in
the PPM mode.
3. Dip the meters electrode into the solution to be
tested and make sure it is deep enough to
cover the meter’s electrodes. After 5 seconds,
the measurement is done. The result is shown on the LCD display. Note: Never dip the meter into
a large body of solution as you may drop it in and ruin the meter. Test small samples only
.

© 2008 CWPInstruments 1.888.433.6867 www.cwpmeters.com
Last Updated January 29, 2010
4. After taking the meter out of the solution you will notice the display will hold for approximately 5-10
seconds. Then, the meter will reset to zero and wait for the next measurement. The meter will
not make a new measurement until the meter’s display resets to zero (000). Note: For best
accuracy between tests, the electrode should be rinsed and blotted dry. Rinse and dry the
electrode before storage.
5. The meter can be turned OFF by pressing “on/off’ button manually. It will also turn OFF
automatically after 5 minutes of no use.
6. If the unit cannot be switched ON or the display fades replace the old battery with a new battery.
When storing the meter for long periods of time, remove the battery.
Calibration of the TDSWand PPM/EC/CF meter
Under normal use, calibration may not be needed for long periods of time. If after using the meter for
a while you notice an obvious error in readings, clean the electrode first. If cleaning does not help
check the battery as it may need to replaced. If the battery is good, calibration is needed. To calibrate
the meter see the section below.
1. Take off the battery cap. Pull out the battery. Looking down and into the
body, a calibration trimmer screw and the Auto Lock switch can be seen
(See Diagram).
2. With the appropriate button located next to the display, turn the meter ON and choose the PPM
calibration scale. Once again, locate the Auto Lock switch and move it to the OFF position (See
diagram/use the screwdriver to flip the switch). Now immerse the meter’s electrodes into the
Control Wizard Products 1382 buffer solution. Use enough buffer to completely cover the
electrodes. Swish the meter back and forth to dislodge any trapped air. Now use the screwdriver
to turn the Calibration trimmer screw and adjust the display to show 138 (1380ppm or 138 x 10).
With the display showing 138, pull the meter out of the buffer and flip the Auto Lock switch back to
the ON position. The calibration is now complete.
3. Put the battery back into the meter and push the battery cap back onto the meter’s body in a firm
and secure manner.