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DOC026.53.80210

FH950

04/2018, Edition 5

User Manual

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Summary of Contents for FH950

Page 1: ...DOC026 53 80210 FH950 04 2018 Edition 5 User Manual...

Page 2: ......

Page 3: ...ry safety 10 Install the battery 10 Charge the battery 11 Connect the sensor to the meter 12 Attach the lanyard 12 Attach the velcro strap 13 User interface and navigation 13 Keypad and key functions...

Page 4: ...battery 29 Troubleshooting 29 Diagnostics 29 Troubleshoot errors 30 Replacement parts and accessories 30 Appendix 32 Mean section and Mid section methods 32 Profiles and measurements 33 Site selection...

Page 5: ...gm type absolute pressure with single point calibration Accuracy static The larger of 2 of reading or 0 015 m 0 504 inches Steady state temperature and static non flowing water Range 3 05 m 0 10 ft Re...

Page 6: ...alculation Mean section or mid section method Diagnostics Self test keypad display event log Conduit profiling methods 0 9 x Vmax 0 2 0 4 0 8 velocity and level integrator 2D Stream profiling methods...

Page 7: ...sult in minor or moderate injury N O T I C E Indicates a situation which if not avoided may cause damage to the instrument Information that requires special emphasis Precautionary labels Read all labe...

Page 8: ...to correct the interference at their expense The following techniques can be used to reduce interference problems 1 Disconnect the equipment from its power source to verify that it is or is not the s...

Page 9: ...height lock release device 6 Sensor assembly 3 Top setting wading rod accessory 7 Flow direction 4 Sensor cable Sensor overview Figure 2 shows the main sensor components Instructions for how to attach...

Page 10: ...overview Figure 3 shows the features of the meter Figure 3 Meter components 1 USB connection port2 6 Threaded hole for adjustable meter mount 2 Keypad 7 Slots for velcro or strap attachment 3 Meter d...

Page 11: ...ironments where the stream can be waded Optional accessories let the user take measurements from a bridge or cable over a stream A torpedo shaped weight attached below the sensor keeps the sensor in p...

Page 12: ...tures less than 60 C 140 F Keep the battery dry and away from water Prevent contact between the positive and negative battery terminals Do not let unauthorized persons touch the battery Discard the ba...

Page 13: ...V or less the display shows a warning and the meter automatically powers off The battery must be charged before the unit becomes functional again 1 Make sure that the correct type of plug for the geo...

Page 14: ...Connect the sensor to the meter Attach the lanyard Attach the lanyard to wear the meter safely around the neck 12 English...

Page 15: ...hold the extra cable Refer to Figure 6 Figure 6 Attach the velcro strap 1 Loop side 2 Hook side User interface and navigation Keypad and key functions Figure 7 shows the meter keypad Table 1 gives th...

Page 16: ...for five seconds to do a manual zero of the depth sensor In Real Time mode the Quick Jump key toggles between the digital and graph views Right and Left arrows Moves to the right or left in the displ...

Page 17: ...shows an error message Connect a sensor and try the operation again 1 Real time Select this option to get real time velocity and depth information A sensor with depth capability is necessary to read d...

Page 18: ...sensor positioning feature In automatic mode setup the user directly enters the distance from the bottom of the channel to the bottom of the sensor mount offset The setup interface will continuously s...

Page 19: ...up a profile for a stream or flowing channel Do velocity measurements to calculate total discharge based on ISO 748 or USGS standards for Mid section or Mean section methods Conduit This option is us...

Page 20: ...pth Sets the Auto Zero feature to On or Off If set to On the instrument does an air calibration when the sensor is removed from the water and is in the air To do the air calibration the instrument aut...

Page 21: ...gh temperature environments such as a closed vehicle in direct sunlight Failure to take this precaution can make the battery overheat and cause a fire or explosion The battery must be installed in the...

Page 22: ...sluices Use Table 3 as a guide for the number of stations necessary for an acceptable measurement The information is based on EN ISO 748 standards Table 3 Number of stations in relation to the waterw...

Page 23: ...in Figure 11 Figure 11 Example of a typical cross section To measure velocities in a cross section 1 In the Main Menu select Profiler 2 Enter the Operator name A list of options will show Option Descr...

Page 24: ...ance from the bottom of the channel to the bottom of the sensor mount b Put the sensor at the lowest position on the wading rod c Enter the minimum depth measured from the bottom that the sensor can r...

Page 25: ...ent point from the list Obey the instrument prompts and adjust the sensor to the correct depth If the sensor has a depth option adjust the sensor depth until the depth box is green This means the sens...

Page 26: ...he recommended method when the depth is less than 12 7 cm 5 in or when the velocity is not stable 0 2 0 4 0 8 The meter calculates the flow value based on velocity measurements taken at 0 2 0 4 and 0...

Page 27: ...rm 6 If necessary select Setup to change the Y axis range or the data filter parameters 7 Push OK 8 Do steps 3 7 for all of the other measurement points then push OK to return to the list of measureme...

Page 28: ...ugh the flow as shown in Figure 14 Select Cancel at any time to cancel the measurement and return to the Select Method menu Note The RC filter mode with a value of 2 to 4 seconds is recommended for th...

Page 29: ...l or use the UP or DOWN arrow to select a file in the list c Push OK once to delete the files then one more time to return to the previous screen 3 To delete Profiler files a Go to Main Menu Profiler...

Page 30: ...not try to make the instrument power on or off before the update process is complete 10 In the Main Menu select Diagnostics About Make sure that the firmware versions for both the Handheld Boot and t...

Page 31: ...or repair or maintenance remove the battery and put the battery in a protective cover before shipment 1 Set the power to off 2 Remove the battery Refer to Install the battery on page 10 3 Discard the...

Page 32: ...or is not recognized Check the sensor connection Make sure that the lock nut on the connection port is tight finger tighten only Display is dim or is not visible Push a key on the keypad Data is not a...

Page 33: ...M Bottom section for wading rod English Metric 43000M 43001M Intermediate section for wading rod English Metric 43010M 43011M Base plate for wading rod English Metric 43015M Double end hanger for wadi...

Page 34: ...or the Mid section method for flow calculations The Mean section method divides the cross section into individual flow segments Pairs of adjacent verticals are the limits of the segments The two edges...

Page 35: ...or the Mid section method Figure 16 Mid section method Where m station number n total number of stations V velocity at vertical b distance to vertical from bank h depth at vertical q flow at vertical...

Page 36: ...elect areas immediately downstream from sharp bends or obstructions Do not select areas with converging or diverging flow approaches to a flume or vertical drops Do not select areas immediately downst...

Page 37: ...e threshold value for the best performance Go to Setup Menu Wet Dry Threshold For troubleshooting the present reading is used as a guide to set a custom threshold Get a reading in the water wet and th...

Page 38: ...36 English...

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Page 40: ...P O Box 389 Loveland CO 80539 0389 U S A Tel 970 669 3050 800 368 2723 U S A only U S A orders hach com International international hach com flowtechsupport hach com www hachflow com Hach Company Hac...

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