Global Water 800-876-1172 • globalw.com Global Water Instrumentation, Inc. 151 Graham Road P.O. Box 9010 College Station, TX 77842-9010 Telephone : 800-876-1172 International : (979) 690-5560, Fax : (979) 690-0440 e-mail : globalw@globalw.
Global Water 800-876-1172 • globalw.com Table of Contents I. WS705 Checklist II. Inspection III. Description • IV. Installing the Water Sampler V. Installing the Pickup Hose VI. Page 3 • • • • • • • • • • • 3 • • • • • • 4 • • • • 5 • • • • • 5 The Control Panel • • • • • • 6 VII. Composite Sampling • • • • • 8 VIII. Discrete Sampling • • • • • • 8 IX. External Trigger mode • • • • • 9 X. Specifications • • • • • • 11 XI.
Global Water 800-876-1172 • globalw.com Congratulations on your purchase of the Global Water WS705 Water Sampler. This instrument has been quality tested and approved for accurate and reliable operation. We are confident that you will find the WS705 to be a valuable asset for your applications. Should you require assistance, our technical staff will be happy to help. I. WS705 Checklist 1. 2. 3. 4. 5. 6. 7. 8. 9. II.
Global Water 800-876-1172 • globalw.com III. Description The Global Water WS705 Sampler is designed specifically to meet a wide variety of sampling requirements including industrial discharge, process control, water and wastewater treatment plants, sewers, rivers and streams. The sampler consists of a rugged, rainproof and lockable wheeled transport case with a comfort grip handle on top and retractable handle on the back.
Global Water 800-876-1172 • globalw.com IV. Installing the Water Sampler a. The sampler should be placed upright (it will not work if placed on its back or side). b. Open the sampler and remove the battery charger from the unit. Store the charger for later use. c. Remove the pickup hose and connect it to the sampler using the quickdisconnect fitting on the side of the enclosure. Place the protective cap over the protective quick-disconnect plug and save for future use. d. To secure the sample bottle: 1.
Global Water 800-876-1172 • globalw.com VI. The Control Panel 1. Pump. 2. Start Delay: This setting delays sampling by a preset amount of time. If no delay is desired, set the control to zero. Only the first sample taken by the pump is delayed, except as described later in the section titled “External Trigger Mode”. 3. Sample Interval: Sets the time interval between composite samples.
Global Water 800-876-1172 • globalw.com 6. Pulse Out: This output sends a pulse to an optional recording or monitoring device each time the pump starts, allowing the time of the sample event to be recorded. Refer to the Specifications section for details about the output pulse. 7. Status: This red LED indicates the status of the sampler. While the sampler is waiting to be triggered, the light remains off.
Global Water 800-876-1172 • globalw.com VII. Composite Sampling A composite sample is a series of smaller samples put into the same bottle, thus showing an “average” sample over time. Set the Interval control to the desired time between samples (do not select the External Trigger position). Set the Size control to the desired sample size. Note that the sample size settings are approximate and apply to a head height of four feet.
Global Water 800-876-1172 • globalw.com IX. External Trigger Mode When the Sample Interval control is set to the “External Trigger” position, the sampler can be triggered externally by either the Trigger In jack or the Rain Sensor input. This mode is useful in applications where sampling occurs based on readings from a process controller, SCADA system, flow monitor, auto-dumping rain gauge or other remote monitoring devices.
Global Water 800-876-1172 • globalw.com Holding the Trigger Input active past the end of the sample will cause the pump to continue until the Trigger Input is released. When the sample is complete, the pump reverses, then stops. Flow Proportional Sampling a. To set the WS705 up to take flow proportional samples, a flow monitor must be attached to the control panel. In this configuration, the sampler is designed to take a sample every time a specific amount of flow has passed through the flow monitor. b.
Global Water 800-876-1172 • globalw.com X. Specifications Operating Temperature: Dimensions Weight: Materials: Enclosure: Bottle: Pickup Hose: 0° to +70°C 22”H X 18"W X 10"D 26lb (Shipping Weight 28lbs) Expanded UV protected PVC 2.5 gallon Polyethylene 15' nylon reinforced 1/4" ID polyethylene flexible tubing with 20-Mesh intake strainer and quick-disconnect fittings. 6-Mesh strainer available as option.
Global Water 800-876-1172 • globalw.com XI. Maintenance Sampler The Global Water WS705 Water Sampler requires minimal maintenance. The sampler enclosure is rainproof and rugged. Avoid exposure to extremely rough usage. Routinely wipe the carrying case and control panel face, rinse the pickup hose and debris strainer, and wash the sample bottle with mild soap and warm water.
Global Water 800-876-1172 • globalw.com confirm that External Trigger mode is selected on the Interval control. Check the pulses coming from the triggering device and confirm they meet specifications. Test the Trigger Input by plugging one of the shorting plugs supplied with the sampler into the jack. ii. The LED is blinking: Check the Start Delay and Interval settings. The sampler may be waiting for the Delay timer to run out or it may be timing the interval between composite samples. iii.
Global Water 800-876-1172 • globalw.com XIII. Warranty a. Global Water Instrumentation, Inc. warrants that its products are free from defects in material and workmanship under normal use and service for a period of one year from date of shipment from factory. 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.
Global Water 800-876-1172 • globalw.com Appendix A: Sample Size Calibration Use the following graph to see how sample size changes with head height. The Sample Size controls on the control panel are calibrated at a height of 4 feet. Increasing the head height decreases the sample size by a predictable amount.
Global Water 800-876-1172 • globalw.com Appendix B: Battery Life While battery life depends on several factors such as charge, condition and temperature; it can generally be assumed that the sampler can deployed in the field for 3 months waiting to be triggered, while still retaining enough charge to run a single pump for one hour (about 10 gallons). The battery should generally be charged at least once per month and the voltage should not be allowed to fall below 11 volts.
Global Water 800-876-1172 • globalw.com Appendix D: Replacement Parts and Accessories Part Description 12V 5Ah Battery Battery Charger 2.5 Gallon Plastic Sample Bottle 2.
