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Summary of Contents for Global Water WQ770
- Page 1 Global Water 800-876-1172 • globalw.com Global Water Instrumentation, Inc. 151 Graham Road P.O. Box 9010 College Station, TX 77842-9010 T: 800-876-1172 Int’l: (979) 690-5560, Fax: (979) 690-0440 E-mail : globalw@globalw.com Turbidity Meter: WQ770 Publication Number 38900512 - 1 -...
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Page 2: Table Of Contents
Turbidity Meter. This instrument has been quality tested and approved for providing accurate and reliable turbidity measurements. We are confident that you will find the WQ770 to be a valuable asset for your application. Should you require assistance, our technical staff will be happy to help. -
Page 3: Inspection
9V Lithium Battery (Inside Turbidity Meter Enclosure) d. WQ770 Manual The Turbidity Meter has been calibrated and verified at Global Water’s facility prior to shipping, there is no need to recalibrate the meter until the recommended maintenance period has elapsed. -
Page 4: Wq770 Operation
Global Water 800-876-1172 • globalw.com III. WQ770 Operation a. Before turning the unit on, make sure that the sensor cable has correctly been attached to the display. Push the cable connector gently into the meter’s connector. The outer connector ring can be turned and locked into place so the cable will not detach from the meter during use. -
Page 5: Maintenance
800-876-1172 • globalw.com a. Battery life is dependent on many variables. Extreme heat and extreme cold will shorten the life of a battery. A WQ770 in an environment that has a sustained temperature of 23°C will run 5% longer than a unit that has a sustained temperature of 0°C. Store your WQ770 at room temperature and disconnect the battery when not in use for long periods of time. - Page 6 Verify there are no air bubbles under the sensor shield. c. Check the meter’s calibration. Other issues d. Call Global Water for tech support: 800-876-1172 or (979) 690-5560 (many problems can be solved over the phone). Fax: (979) 690-0440 or E-mail: globalw@globalw.com.
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Page 7: Warranty
Global Water’s obligations under this warranty are limited to, at Global Water’s option: (I) replacing or (II) repairing; any products determined to be defective. In no case shall Global Water’s liability exceed the products original purchase price. This warranty does not apply to any equipment that has been repaired or altered, except by Global Water Instrumentation, Inc., or which has been subject to misuse, negligence... -
Page 8: Appendix A: Wq770 Calibration Procedures
Global Water 800-876-1172 • globalw.com VIII. Appendix A: Turbidity Meter Calibration Note: The following steps show how to calibrate the WQ770 Turbidity Sensor using suspended polymer turbidity standards only. General a. The Turbidity Sensor is measuring turbidity in liquids by using a 90 degrees scatter nephelometer where a focused beam is directed into the monitored water. - Page 9 Global Water 800-876-1172 • globalw.com Preparation: a. Set up a test stand with a rod and clamp to hold the sensor. Beakers will be placed underneath the clamp so the sensor can be inserted into the liquid. b. The sensor must have the stainless steel section of the body in contact with the test solution.
- Page 10 Global Water 800-876-1172 • globalw.com Calibration a. If the sensor is not connected to the meter, push the cable connector gently into the meter’s connector. The outer connector ring should be turned and locked into place so the cable will not detach from the meter during use.
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Page 11: Appendix B: Turbidity Standard Solutions
1000 NTU range in step b and set the HiLab value to 1000 in step i. Appendix B: Turbidity Standard Solutions The following turbidity standards are available from Global Water, contact the Sales Department or Technical Support for more information.