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Summary of Contents for Triplett WQ120
- Page 1 5 Commonwealth Ave Woburn, MA 01801 User Manual Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com WQ120 pH / Conductivity / TDS / Salinity / Temperature Meter - 0 -...
- Page 2 Introduction Thank you for selecting the Triplett WQ120 pH/Conductivity/Total Dissolved Solids (TDS) / Salinity meter. With the WQ120’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 provide years of reliable service.
- Page 3 Description METER DESCRIPTION Battery compartment cap LCD Display MODE / HOLD button CAL / RECALL button ON/OFF button Electrode collar pH/Conductivity Electrode LCD DISPLAY Bar graph reading Measurement Units Main Display RENEW Indicator HOLD Indicator RANGE Calibration Indicator Low Battery Indicator Temperature Display - 2 -...
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Page 4: Getting Started
The WQ120 uses four (4) CR2032 Lithium Ion Batteries (included). If the batteries are weak, the ‘Low Battery’ indicator appears on the LCD. Press the ON/OFF key to turn the WQ120 on or off. The auto power off feature shuts the WQ120 off automatically after 10 minutes of inactivity to preserve battery life. -
Page 5: Measurement Procedure
Measurement Procedure Sample Preparation: For Conductivity, TDS or Salinity place the test sample in a sample cup with enough depth (2.5cm minimum) to cover the electrode. Stir the solution to remove any air bubbles. For pH, place the tip of the electrode in the sample or make contact with a wet surface. - Page 6 Changing Measurement Function The meter can be set to measure pH, Conductivity, TDS or Salinity. To change the mode: 1. Press and Hold the MODE/HOLD button for 2 seconds and the display will begin to scroll through the units. pH; µS (Conductivity); ppm S (Salinity); ppm (TDS); mg/l (TDS); Note: The “HOLD”...
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Page 7: Storing Readings
Storing Readings 1. Press the MODE/HOLD button to store a reading. The storage location number will be displayed on the lower display, while the main display shows the stored reading. The meter will enter the HOLD mode and the “HOLD” indicator will appear. 2. -
Page 8: Changing Temperature Units
Clear Stored Memory With the unit on, press and hold ON/OFF for 4 seconds. “CLr” will be briefly displayed when the memory is cleared. Changing Temperature Units To change the displayed temperature units ( C or 1. With the unit OFF, press and hold down the CAL/RECALL button. 2. -
Page 9: Low Battery Indication
Note that if the solution is more than 1 pH unit off from the L (4), M (7), or H (10) pH buffer, or if the electrode slope is low, the WQ120 will assume an error and abort the calibration (‘End’ will be displayed, and the unit will return to measure mode.) During calibration, the pH reading flashes on the main display. - Page 10 RENEW Display A flashing ‘RENEW’ warning indicates that the probe is not performing to expected specifications. If cleaning and recalibration does not cause the RENEW icon to disappear, replace the probe (see optional accessories on the last page of this manual). The RENEW display appears as a result of the pH electrode slope falling below 65% of a nominal slope.
- Page 11 Calibration - Conductivity Meter accuracy verification should be performed on a periodic basis. Once per month is the recommended cycle for normal use. If calibration is required, a conductivity standardizing solution must be obtained. The meter can be calibrated in any or all of the three ranges. Standardizing solutions of 84µS/cm, 1413µS/cm or 12.88mS/cm (12,880µS/cm) are used for the automatic calibration recognition procedure.
- Page 12 Note: The meter allows for a 1, 2 or 3 point calibration. If calibration is done for more than one point the lowest value standard should be done first to obtain the best accuracy. Considerations and Techniques Do not touch the inner surfaces of the conductivity electrodes. Touching the surface of the platinized electodes may damage and reduce the life of the probe.
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Page 13: Specifications
Specifications Display 2000 count LCD with Bargraph pH Range 0.00 to 14.00 pH Accuracy ±0.01 pH typical pH ATC Range 32°F to 194 F (0°C to 90 pH Reference Junction Permanent gel, non-refillable Conductivity ranges 0.0 to 199.9µS 200 to 1999µS 2.00 to 19.99mS TDS ranges 0.0 to 99.9ppm or mg/L... -
Page 14: Maintenance
Maintenance Battery Replacement Twist off the battery compartment cap Replace the four (4) 2032 batteries observing polarity. Replace the battery compartment cap Electrode Replacement To remove an electrode, unscrew and completely remove the electrode collar (turn the collar counter-clockwise to remove). Gently rock the electrode from side to side, pulling it downwards, until it disconnects from the meter. -
Page 15: Cleaning Recommendations
1 hour. Please Note: Since the WQ120 does not have a refillable pH reference electrolyte chamber, it is important not to soak the electrode in the above solutions for more than the recommended times. To do so may cause a reference potential shift, which will cause degradation in performance or failure. -
Page 16: Warranty
Triplett / Jewell Instruments extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (1) one year from the date of purchase.
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