WS755 Wastewater-Stormwater Sampler User Manual
Contents
1. S ample R everse Interval Sample Reverse until the sample bottles are full For each pump the same amount of Interval time is placed between samples even if the size settings are different When both bottles are full the Status LED remains lit constantly VII Discrete Sampling A discrete sample is a single sample put into the same bottle thus being a sample at one point in time Set the Size control for the corresponding pump to Full Once started the pump will continue to run until the sample bottle if full As with composite sampling the Start Delay timer begins when the sampler is trigger by the Rain and Water Sensors and the first sample is taken when the timer expires If the Delay control is setto zero sampling begins immediately The Status LED blinks every 2 seconds while the delay timer or the pumps are running and remains lit constantly once both of the sample bottles have been filled At the end of sampling the pumps reverse for 15 seconds Je Global Water 800 876 1172 e globalw com VIII Mixed Sampling Composite and Discrete Sampler The WS755 Sampler can be configured as both a composite and discrete sampler at the same time since each pump has a separate Size control Set one pump s size setting to the desired composite sample size and the other to Full Again the Start Delay timer begins when the sampler is trigger by the Rain and Water Sensors and the first sample is taken when the timer expires If the2. Troubleshooting c Check that the battery is firmly connected to the control panel and confirm that itis fully charged Press the Pump Test buttons on the front panel The test buttons should always run the pumps regardless of the state of any of the inputs Turn the power switch off for 1 2 seconds then back on to resetthe sampler Check the Status LED on the front panel i The LED is off If the water sensors are being used check the Rain and Water Sensor inputs Sensors must be in contact with moisture and unused inputs must have one of the shorting plugs supplied with the sampler plugged into the jack If the Trigger Inputs are being used 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 Inputs by plugging one of the shorting plugs supplied with the sampler into the jack li 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 The LED is on constantly Check the bottle switches The light remains on when both sample bottles are full or when both float switches are not plugged in or working properly Plug one of the shorting plugs supplied with the sampler into one of the bottle switch jacks the light should go out or start blinking Other issues e Call us for te
3. the timer expires the pumps take a sample based on their individual Size settings When the samples are complete the pumps reverse for 15 seconds and then stop The sampler cannot be re triggered until the rain gauge empties itself and the Rain Sensor goes dry The next time the sensor detects moisture the Start Delay timer will start over again and another sample will be taken when it expires 9 Global Water 800 876 1172 e globalw com If a pump s Size control is setto take a full bottle discrete sample further triggers will have no effect on that pump If a pump is set to take composite samples each one will represent the conditions at the time of that qualified rain event This process will continue until both the sample bottles are full and the Status LED remains lit all the time Using the Trigger Inputs as a source These inputs are generally used for connecting to a flow monitor processor controller or other external monitoring device When using the Trigger In input jacks leave the Rain Sensor input jack disconnected Each of the two Trigger Inputs control the corresponding pump separately from the other Upon being triggered by one of the Trigger Inputs the Start Delay timer begins running When the delay timer has expired the corresponding pump takes a sample based on its Size setting Holding the Trigger Input active past the end of the sample will cause the pump to continue until the Trigger Input is released When
4. 72 e globalw com VI Composite Sampling A composite sample is a series of smaller samples put into the same bottle thus showing an average sample over time Setthe Interval control to the desired time between samples do not select the External Trigger position Set the Size control forthe corresponding pump to the desired sample size Note that the sample size settings are approximate and apply to a head height of four feet For heights other than four feet refer to the chart inside the front of the sampler Each pump can have different size settings but will share the same Sample Interval setting The sampler starts timing when both of the optional Rain and Water Sensors detect moisture If you do not have the optional water sensors or do not need them for your application defeat them by plugging one of the two shorting plugs supplied with the sampler into their jack If both inputs are defeated the sampler starts up triggered when the power switch is turned on The Status LED starts blinking every 2 seconds once the sampler is triggered The Start Delay timer begins running when the sampler is triggered by the Rain and Water Sensors and the first sample is taken when the timer expires If the Delay control is set to zero sampling begins immediately The delay timer only applies to the first sample taken by each pump Atthe end of each sample the pumps reverse for 15 seconds Sampling continues as Trigger Delay S ample R everse Interval
5. Delay control is set to zero sampling begins immediately The Status LED blinks every 2 seconds while the delay timer and the pumps are running and remains lit constantly once both of the sample bottles have been filled At the end of each sample the pumps reverse for 15 seconds X External Trigger Mode When the Sample Interval control is setto the External Trigger position the sampler can be triggered externally by inputs from either the Trigger In jacks 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 Using the Rain Sensor as a trigger source This mode is normally used with an auto dumping rain gauge that empties itself every 24 hours Setthe Sample Interval control to External Trigger Set each pumps Size control based on desired composite sample size or setto Full for a discrete sample The sampler will be triggered when both the Rain and Water Sensors detect moisture If the Water Sensor is not needed use one of the shorting plugs supplied with the sampler to defeat it by plugging it into the Water Sensor input jack Place the Rain Sensor at the desired height in the rain gauge When the Rain Sensor detects moisture the sampler will Start Once triggered by the Rain Sensor the Start Delay timer begins running and the Status LED begins blinking every 2 seconds When
6. Global Water 800 876 1172 e 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 com WS755 Water Sampler Publication Number 39160314 01 957 Table of Contents VI VII VIII Xl XII XIII XIV XV XVI XVII XVIII Global Water 800 876 1172 e globalw com WS755 Checklist e Inspection e e e e Description e e e e e Installing the Water Sampler e e Installing the Pickup Hose e e e The Control Panel e e a Composite Sampling e e e Discrete Sampling e e e e Mixed Sampling e e e e e External Trigger mode e e e Specifications e e e e Maintenance e e E e e Troubleshooting e e e e Warranty e e e e Appendix A Sample Size vs Head Height e Appendix B Battery Life Appendix C Inputand Output Connections e e Appendix D Accessories Copyright Global Water Instrumentation Inc 2014 Page 3 11 12 12 14 15 16 16 17 Global Water 800 876 1172 e globalw com Congratulations on your purchase of the Global Water WS755 Water Sampler This instrument has been quality tested and approved for accurate and reliable operation We are confident that you will find the WS 755 to be a valuable asset for your applications Should you require assistance our tech
7. balw 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 6 months waiting to be triggered while still retaining enough charge to run a single pump for one hour about 10 gallons or both pumps for hour 5 gallons To prevent large current surges which occur when the pumps first turn on the WS755 is designed so that only one pump will turn on or off at a time A second time delay is inserted between these events extending the life of the charge and the life of the battery The battery should be monitored periodically for voltage the low self discharge design will allow minimal maintenance during periods of non use Appendix C Input and Output Connections Pulse Outputs d l1 External Recording or Monitoring Device Trigger Inputs Triggered bySwitch s or Relay Colsure i os p Logc J250ms Min K a d L Triggered by External Logic or Process Controller Rain and Water Shorting Plug q Gs g Sensor Inputs T Global Water 800 876 1172 e globalw com Appendix D Accessories Part Description Part Number Unit 12V 4 Ah NiMH Battery 329417 Each NiMH Battery Charger 329585 Each Gallon Plastic Sample Bottle 00 418 Each Gallon Plastic Bottle Cap Float Switch CB0200 Each Replacement Pickup Hose 00 546 Feet 20 Mesh Pickup Strainer Assembl
8. ch 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 Be prepared to describe the problem being experienced including specific details of the application and installation and any additional pertinent information In the event that the equipment needs to be returned to the factory for any reason please call to obtain a RMA Return Material Authorization Do not return items without a RMA on the outside of the package Decontaminate the WS705 prior to returning 13 Global Water 800 876 1172 e globalw com Include a written statement describing the problems Send the package with shipping prepaid to Global Water s factory address Insure the shipment as the warranty does not cover damage incurred during transit g When calling for tech support please have the following information ready 1 Model Unit serial number P O the equipment was purchased on Global Water s sales number or the invoice number Repair instructions and or specific problems relating to the product prs pell IXV 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 Il repairing any products d
9. etermined 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 or accident It is expressly agreed that this warranty will be in lieu of all warranties of fitness and in lieu of the warranty of merchantability b The warranty begins on the date of the product s invoice Global Water 800 876 1172 e globalw com Appendix A Sample Size vs Head Height 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 To determine the appropriate Sample Size setting for a desired volume find the sample size on the horizontal axis follow straight up to the line corresponding to your head height then look across to the vertical axis and read the setting for the Size control on the control panel Actual Sample Size vs Sample Size Control for Various Head Heights 2000 1800 4Feet o gt 1600 1400 1200 Sample Size Control Setting ml Bs 600 ad Z LE 20 f l s00 750 100 1250 1500 4760 2000 2250 Actual Sample Size ml Global Water 800 876 1172 e glo
10. ks the same as Pump 1 Sample Size described above Trigger In These inputs work in External Trigger mode only when selected by the Sample Interval control A signal from an external device will cause a single sample to be taken by the corresponding pump according to its Size control The External Trigger mode is described in Global Water 800 876 1172 e globalw com more detail later in the section titled External Trigger Mode Refer to the Specifications section for details about the input pulse requirements 8 Pulse Out These outputs send a pulse to an optional recording or monitoring device each time the corresponding pump starts allowing the time of the sample event to be recorded Refer to the Specifications section for details about the output pulse 9 Status This red LED indicates the status of the sampler While the sampler is waiting to be triggered the light remains off Once triggered the LED will blink once every two seconds while the Delay or Interval timers are running and while the pumps are operating The LED remains lit constantly when both sample bottles are full or if the switches are not plugged in 10 Power This turns the power to the sampler on and off Turning the switch off for one second resets all functions and timers 11 Battery Connect the battery here using the supplied battery cable 12 Water Sensor When an optional water sensor is plugged into this jack sampling will not begin until the
11. l Metal Hydride NiMH battery is a low self discharge type allowing the battery to remain charged during long periods of non use To recharge the battery open the battery enclosure and unplug the battery from the control panel power cable Remove the battery and plug it into the NiMH battery charger The charger is designed with safety features which prevent battery overheating or overcharging The READY and CHARGE LEDs will illuminate while the battery is being charged Once completely charged only the READY LED will be illuminated The FAULT LED indicates one of several conditions e Battery is severely depleted which will place the charger into trickle charging mode until battery is conditioned at which time the charger will Switch to fast charging At this point the FAULT LED will turn off and the READY and CHARGE LEDs will illuminate e lf the battery to be charged is either too hot or too cold the battery thermistor will cause the FAULT LED to illuminate Once the battery reaches near room temperature charging will begin e Should the battery have a shorted or open cell the FAULT LED will illuminate upon connecting the battery and remain on NOTE Under normal conditions the battery will require approximately two hours to fully charge from a fully discharged state Additional batteries and battery chargers are available from GWI Global Water 800 876 1172 e globalw com XIII
12. ld be installed in a wastewater discharge channel or stream The pickup strainers should be submerged under water and should be situated to avoid contact with the channel bottom Global Water 800 876 1172 e globalw com The Control Panel Global Water gee NU The Leader in Water Instrumentation 40m amp 3 Gold River CA USA globalw com n wg Ld WS755 Mu D Goo Pump One Pump Two Start Delay This setting delays sampling by a preset amount of time If no delay is desired setthe control to zero Only the first sample taken by each pump is delayed except as described later in the section titled External Trigger Mode Sample Interval Sets the time interval between composite samples The External Trigger position is reserved for using the Trigger and Rain Sensor inputs to initiate sampling as described later in the section titled External Trigger Mode Pump 1 Sample Size Sets the size for a single composite sample with pump one The sample size settings are approximate and apply to a head height of four feet The switch position marked Full causes the pump to work as a discrete sampler filling the bottle full in one sample Note In the Full position the sampler will shut off the pump after one hour even if the bottle is not full Pump 2 Sample Size Sets the sample size for pump two and wor
13. nical staff will be happy to help I WS755 Checklist WS755 Water Sampler with Transport Case Two 20 Mesh Pickup Strainers w 15 of Hose NiMH 12V Battery NIMH Battery Charger Battery Cable Two Water Sensor Shorting Plugs Two Quick Disconnect Fitting Caps and Plugs WS755 Manual CO C Un 4 0 hJ m II Inspection The WS755 unit was carefully inspected and certified by Global Water s Quality Assurance Team before shipping If any damage has occurred during shipping please notify Global Water Instrumentation Inc and file a claim with the carrier involved Use the checklist to ensure that everything needed to operate the WS 755 Water Sampler was received III Description The Global Water WS 755 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 Global Water 800 876 1172 e globalw com 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 The enclosure houses a control panel with two peristaltic sampling pumps two sample bottles two pickup hoses and strainers with quick disconnect fittings and a rechargeable battery in a self contained battery box The WS755 Sampler can take two individual time weighted composite samples or the sampler can be set to take full b
14. nnect fittings 6 Mesh strainers available as options Neoprene 1 4 ID 7 16 OD 1000 ml per minute at 4 ft head P eristaltic 20 feet Rechargeable NIMH 12V 4 Ah One Pump running 1 hour Two Pumps running hour Standby 6 months while retaining power to run both pumps to capacity 16 time settings from 0 to 12 hours 15 time settings from 5 min to 12 hours plus an External Trigger mode setting 15 composite sample sizes from 50ml to 2 liters plus a Full Bottle discrete setting Approximate sizes at 4 foot head 250mS minimum pulse width Switch closure or 4 30VDC 5VDC one second pulse 1000ohm output impedance S witch closure Input Floating read switch in bottle Optional moisture sensors or switch closure inputs 10A Slow Blow Global Water 800 876 1172 e globalw com XII Maintenance Sampler The Global Water WS 755 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 bottles with mild soap and warm water Additional plastic and glass sample bottles neoprene tubing for the sampler pump bottle caps float switches removable debris strainers and pickup hose can be purchased from Global Water see Appendix D section Battery If the pump runs slowly this is an indication that the battery requires charging The Nicke
15. ottle discrete or Grab samples Each pump has its own sample bottle and control for setting the size of individual samples This allows each pump to be set as either a composite or discrete sampler independently of the other or in the case of two composite samplers have different size settings for each pump A delay timer can be setto start sampling after a preset time This allows multiple samplers to be deployed in the field and have them turn on atthe same time The delay can also be used to hold off sampling to let the water source flush out debris or other contaminants After each sample the pumps will reverse for 15 seconds This clears any debris from the strainer at the end of the pickup hose and also empties water from the hose so the next sample is not contaminated by the previous one Inputs are provided for triggering the sampler based on water level a rain gauge sensor or signals from an external process controller or other monitoring device Individual outputs are also available for monitoring when each of the pumps has taken a sample using a data logger or similar recording device Global Water 800 876 1172 e globalw com IV Installing the Water Sampler a b e f The sampler should be placed upright it will not work if placed on its back or side Remove the pickup hoses and connect to the sampler using the quick disconnect fittings on the side of the enclosure Place the protective caps over the pro
16. presence of water is detected the Rain Sensor must also detect water If this sensor input is not being used plug one of the two shorting plugs supplied with the sampler into this jack This input has no affect when triggering the sampler with the Trigger Inputs in External Trigger mode 13 Rain Sensor When an optional water sensor is plugged into this jack sampling will not begin until the presence of water is detected usually in a rain gauge the Water Sensor must also detect water If this sensor input is not being used plug one of the two shorting plugs supplied with the sampler into this jack This input has no affect when triggering the sampler with the Trigger Inputs in External Trigger mode This input can also be used to take individual composite samples and is described in detail later in the section titled External Trigger Mode 14 Bottle Switches The sample bottle float switches plug into the control panel here For sampling to occur a float switch must be plugged in and the bottle must not be full If the Status LED remains lit all the time check these connections 15 Test Pump Pressing one of these buttons tests the operation of the corresponding pump These buttons will test the pumps operation regardless of whether a bottle switch is plugged in or not The pump runs forward for as long as the button is held down then reverses for an equal amount of time or 15 seconds which ever is less Global Water 800 876 11
17. tective quick disconnect plugs and save for future use To secure the sample bottles 1 Screw the bottle cap float switch onto the sample bottle 2 Place the bottles into the sampler enclosure 3 Insert the end of the peristaltic pump s hose in the hole atthe top of the bottle cap 4 Plug the float switch lead into the jack on the front of the control panel The sampling unit can be secured from vandalism and strong winds by one of the following methods 1 Mount unit on post and lock closed 2 Lock closed and chain handles to a solid structure such as a tree post or building 3 Enclose and lock unit in a steel electrical box Avoid drilling holes in the enclosure if possible If holes must be drilled in the enclosure avoid drilling through the control panel enclosure Any holes drilled through the enclosure must be sealed with some type of sealant to prevent water from entering the case and causing equipment failure The unit is water resistant not water proof The unit must be located well above the expected water level to continue to provide reliable service V Installing the Pickup Hose Remove the pickup hoses from the enclosure and connect to the sampler using the quick disconnect fittings Place the protective caps over the protective plugs and save for future use When storing the hoses inside the enclosure replace the protective caps and plugs to keep the fittings clean of dirt and contamination The pickup hoses shou
18. the sample is complete the pump reverses and then stops Flow Proportional Sampling a To setthe WS755 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 The flow monitor must provide a momentary switch closure 250ms or longer or a pulse of 4 30VDC whenever a sample is to be taken The output of the flow monitor must be wired to a 2 wire RCA jack as shown in Appendix C The phone plug is then inserted into the Trigger In jack on the control panel C Setthe Sample Interval knob to External Trigger mode and the Sample Size knob to the desired sample size The sample will be taken flow proportionally as directed by the flow meter Global Water 800 876 1172 e globalw com XI Specifications Operating Temperature Dimensions Weight Materials Enclosure Bottles Pickup Hoses Pump Tubing Sample Pumps Flow Rate Type Maximum Lift Battery Battery Life Start Delay Composite Interval Sample Size External Trigger Inputs Pulse Outputs Bottle S witch Inputs Rain and Water Sensors Internal Fuse 0 to 70 C 22 H X 18 W X 10 D 30lb Shipping Weight 32lbs Expanded UV protected PVC Two 1 gallon Polyethylene 15 nylon reinforced 1 4 ID polyethylene flexible tubing with 20 Mesh intake strainers and quick disco
19. y CA0600 Each Replacement 20 Mesh Strainer 01 881 Each Optional 6 Mesh Strainer 01 945 Each Quick Disconnect Fitting Plug amp Cap CA0850 Each Tubing Quick Disconnect Fitting CA0860 Each Replacement Pump Tubing 00 744 Feet Rain and Water Sensors CA0400 Each Auto Drain Rain Gauge CH0000 Each Complete Stormwater Kit CTUO000 Each
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