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Channel Installation Options

The 940 and the 911 Flow Meters do not require profiling to establish average velocity,
allowing setup in a dry channel (

Figure 47

). Rapid signal processing and temperature

compensation accurately record the change from dry to wet conditions.

Figure 47 Installation Setup in a Dry Channel

Содержание 911

Страница 2: ......

Страница 3: ...e Sampler Interface on Model 940 36 4 6 Sampler Receptacle 940 Only 37 4 6 1 Connecting the Sampler Cable to a 940 Flow Meter 38 4 6 2 Connecting a Non Sigma Sampler to a 940 Flow Meter 38 Section 5 S...

Страница 4: ...locity Sensor Oil filled and Non oil 60 7 8 3 Replenishing the Oil 62 7 8 4 Changing the Submerged Area Velocity Sensor Desiccant 63 7 8 5 Replacing the Desiccant 64 Section 8 Replacement Parts and Ac...

Страница 5: ...m cfh cfd m3s m3m m3h m3d Totalized Flow gal ft3 acre ft L m3 Data Storage Capacity 400 days of 1 level reading and 1 velocity reading at a 15 minute recording interval Data Types Level and Velocity S...

Страница 6: ...Battery Life 330 days typical with a 15 minute recording interval 1 level and 1 velocity data download once per week 10 C 50 F also affected by site conditions User Interface Optically Isolated Interf...

Страница 7: ...ion 1 2 W 12 VDC Cable Material Urethane sensor cable with air vent Cable Lengths Available Standard 9 15 23 and 30 5 m 30 50 75 and 100 ft Custom 30 75 76 m 101 250 ft maximum Cable Diameter 0 91 cm...

Страница 8: ...e per degree of change Resolution 0 019 cm 0 0075 in Material ABS housing with ABS acoustical window Cable Length 7 62 to 30 48 m 25 to 100 ft Dimensions 15 24 cm x 5 7 cm 6 in x 2 25 in 1 When the se...

Страница 9: ...trical equipment marked with this symbol may not be disposed off in European public disposal systems after 12 August of 2005 In conformity with European local and national regulations EU Directive 200...

Страница 10: ...s are designed to be incapable of producing a spark or thermal effect that could ignite a mixture of flammable or combustible gases when properly installed in a Class 1 Division 1 Group C or Group D H...

Страница 11: ...mm 2 in must be maintained between any non intrinsically safe conductors and intrinsically safe wiring or terminations The only exceptions allowed for minimum clearances are All intrinsically safe cir...

Страница 12: ...1 and 940 Flow Meters on the dangers and risks associated with entry into confined spaces DANGER Additional training in Pre Entry Testing Ventilation Entry Procedures Evacuation Rescue Procedures and...

Страница 13: ...edures must always be followed prior to entry into confined spaces and or locations where hazardous gases vapors mist dust or fibers may be present Note Before entering any confined space check with t...

Страница 14: ...12 General Information...

Страница 15: ...3 Choosing the Appropriate Meter and Sensor Combination Use Table 4 to determine which sensor to use See Section 6 on page 43 for sensor installation instructions Table 3 Suggestions for Preventing T...

Страница 16: ...14 Getting Started...

Страница 17: ...s not allowed In all cases the local authority having jurisdiction shall have a final say DANGER Il est interdit de proc der toute installation ou configuration d un d bitm tre qui n est pas explicite...

Страница 18: ...SSEMBLY IF THE ELECTRICAL PARAMETERS OF THE CABLE ARE UNKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED 1 CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 TABLE 1 D C B A A B C D 1 2 3 4...

Страница 19: ...RIETARY REPRODUCED OR DISCLOSED TO ANYONE WITHOUT TOLERANCING PER ANSI Y14 5 1994 TITLE 911 FLASH CONV DIRECT PERMISSION FROM HACH COMPANY ANYTHING WHETHER OR NOT SHOWN HEREON WHOLE OR IN PART BE USED...

Страница 20: ...LOSED TO ANYONE WITHOUT DIRECT PERMISSION ANSI Y14 5M 1994 MATERIAL DRAWN ENGINEER DATE NAME TITLE SIZE B DWG NO REV WEIGHT SCALE 1 1 UNLESS OTHERWISE SPECIFIED G S DUKART S DUKART 12 8 2005 DIAGRAM S...

Страница 21: ...nf METER INDUCTANCE 1 uh METER 2 WIRING METHODS MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE ANSI NFPA 70 ARTICLE 504 CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 3 FOR M...

Страница 22: ...R DEFINABLE LENGTH 1 IF THE ELECTRICAL PARAMETERS OF THE CABLE ARE UNKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 3 FOR MODEM INSTALLA...

Страница 23: ...RIETARY REPRODUCED OR DISCLOSED TO ANYONE WITHOUT TOLERANCING PER ANSI Y14 5 1994 TITLE 940 FLASH CONV DIRECT PERMISSION FROM HACH COMPANY ANYTHING WHETHER OR NOT SHOWN HEREON WHOLE OR IN PART BE USED...

Страница 24: ...2 3 4 5 6 7 8 8 7 6 5 4 3 2 1 INTERPRET GEOMETRIC TOLERANCING PER ANSI Y14 5M 1994 MATERIAL DRAWN ENGINEER DATE NAME TITLE SIZE B DWG NO REV WEIGHT SCALE 1 1 UNLESS OTHERWISE SPECIFIED E S DUKART S D...

Страница 25: ...CAL PARAMETERS OF THE CABLE ARE UNKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 3 FOR MODEM INSTALLATION IN CONDUIT MINIMUM CONDUIT DIA...

Страница 26: ...NKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 3 FOR MODEM INSTALLATION IN CONDUIT MINIMUM CONDUIT DIAMETER IS 1 2 IN 1 3 CM MINIMUM BE...

Страница 27: ...P N 4741 75 KHz ZERO DEADBAND PROBE 4741 100 FT MAX 5233 05 100 FT MAX CUSTOMER DEFINABLE LENGTH 3 FOR MODEM INSTALLATION IN CONDUIT MINIMUM CONDUIT DIAMETER IS 1 2 IN 1 3 cm MINIMUM BEND RADIUS IS 3...

Страница 28: ...NKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 3 FOR MODEM INSTALLATION IN CONDUIT MINIMUM CONDUIT DIAMETER IS 1 2 IN 1 3 CM MINIMUM BE...

Страница 29: ...5 100 FT MAX CUSTOMER DEFINABLE LENGTH 1 IF THE ELECTRICAL PARAMETERS OF THE CABLE ARE UNKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6...

Страница 30: ...RE UNKNOWN THE FOLLOWING DEFAULT VALUES MAY BE USED 1 CANADIAN ELECTRIC CODE C22 1 94 SECTION 18 AND ANSI ISA RP 12 6 CAPACITANCE 2 nf METER INDUCTANCE 1 uh METER 2 WIRING METHODS MUST BE IN ACCORDANC...

Страница 31: ...ep into the instrument Refer to Figure 14 on page 29 When not in use cover the connectors with their protective caps to prevent corrosion Use the appropriate manhole support bracket spanner bar See Re...

Страница 32: ...p 2 Lift the end cap off 3 Remove the two thumbscrews securing the battery retaining plate and unlatch the two rubber hold down straps 4 Place the battery pack Cat No 6608500 inside the battery compar...

Страница 33: ...s dans un environnement dangereux The entire battery assembly unscrews and separates to access the battery connector Cat No 5160 01 Follow the steps below to install the battery pack in the 911 1 Hold...

Страница 34: ...e moisture When the blue desiccant turns pink replace the desiccant 4 3 4 Estimating the Battery Life When using the battery pack battery life is based on Number of sensors installed more sensors decr...

Страница 35: ...un incendie ou une explosion DANGER Never install remove or charge batteries in a hazardous location DANGER Vous ne devez jamais installer retirer ou recharger les batteries dans un environnement dan...

Страница 36: ...staller retirer ou recharger les batteries dans un environnement dangereux To recharge the 911 Lithium Ion Battery Pack 5160 01 1 Move the 911 Flow Meter to a non hazardous location 2 Remove the batte...

Страница 37: ...icates with a PC via an optically isolated interface Figure 19 on page 35 The Opto Isolated Interface Cat No 4087 is used only for data downloading and remote programming This interface isolates the e...

Страница 38: ...V dc Output current is 100 mA dc max with a duration of 500 ms D Sampler Start Black Used to wake up a wastewater sampler when a level and or rainfall set point condition is met so that it can begin...

Страница 39: ...nule la fois la garantie et l agr ment de s curit intrins que du d bitm tre et peut provoquer un incendie ou une explosion Reportez vous aux sch mas de contr le de l installation The optional sampler...

Страница 40: ...ule la fois la garantie et l agr ment de s curit intrins que du d bitm tre et peut provoquer un incendie ou une explosion Reportez vous aux sch mas de contr le de l installation The Optically Isolated...

Страница 41: ...from the Optically Isolated Sampler Interface 2 Disconnect all the wires from the terminals labeled J4 through J6 Do not remove the wires from terminals labeled J1 through J3 3 Loosen the compression...

Страница 42: ...40 Meter Installation...

Страница 43: ...zed flow monitoring jobs Flo Center Integrated Sewer System Management Software provides high end automated data collection and automated batch report processing using an unlimited number of meters Mo...

Страница 44: ...42 Software and Communications...

Страница 45: ...of the liquid on the flow stream After measuring the level the microprocessor converts the level reading to a flow rate based on the user defined characteristics of the primary device 6 1 1 Installing...

Страница 46: ...so that the entire beam falls within the channel and does not strike any obstructions Beam Width Formulas The maximum beam width for a given distance from the sensor can be calculated as follows Refe...

Страница 47: ...racket Always level the sensor using a level The maximum water level must be below the deadband to ensure accurate readings Table 8 Beam Angle Spread by Distance Distance from Target in 75 KHz Beam Wi...

Страница 48: ...Figure 24 Permanent Bracket and Isolation Washers 1 Wall Rail Mount Bracket Cat No 2974 3 Downlook Ultrasonic Sensor 2 Isolation Washers Cat No 6820 4 1 inch x 0 25 Hex Nuts Cat No 1429 1 2 3 4 This...

Страница 49: ...5 25 inches Cat No 3046 5 14 cm 5 5 in tall Cat No 3108 3 16 625 inches 2 Cat No 3048 6 Horizontal and vertical sections are fully adjustable2 1 Sensor Mounting Clamp with built in bubble level Sensor...

Страница 50: ...s problem Check for excessive foam and oil While the 940 Flow Meter is designed with an AGC Automatic Gain Control scheme to reduce these factors it is recommended that sites without these anomalies b...

Страница 51: ...nimized Figure 27 on page 50 Mount the sensor 46 cm 18 in away from obstructions located in front of the in pipe sensor to prevent inaccurate liquid level readings Figure 26 Level the sensor using the...

Страница 52: ...ommended calibration method use the sensor height method only when Liquid Depth calibration is not an option An Invisible Range can also be set which allows the transducer to ignore reflections from o...

Страница 53: ...tom of the sensor to the zero flow point Add 18 3 cm 7 2 in to the measured distance to obtain the total zero flow distance Enter the total zero flow distance value into the application software 6 2 3...

Страница 54: ...o not install more than one sensor at a time in pipes less than 61 cm 24 inches Multiple sensors in smaller pipes can create turbulent or accelerated flows near the sensors that may cause inaccurate m...

Страница 55: ...pre drilled holes for direct mounting of the sensor to the band 2 Route the cable along the edge of the band and fasten the cable to the mounting band with nylon wire ties Figure 29 on page 54 to red...

Страница 56: ...te flow meter manual Slide the mounting band as far as possible into the pipe to eliminate drawdown effects near the end of the pipe Locate the sensor at the bottom most point in the channel If excess...

Страница 57: ...55 Sensor Installation Figure 31 Placing the Sensor into the Flow Velocity Sensor Downstream Position Manhole Velocity Sensor Upstream Position Normal Manhole...

Страница 58: ...56 Sensor Installation...

Страница 59: ...e 17 on page 32 and Figure 18 on page 32 prevents moisture damage to the batteries and power circuitry Table 9 contains replacement part numbers If the normally blue desiccant beads turn pink replace...

Страница 60: ...and require no maintenance There are no other user serviceable components inside the electronics compartment 7 6 2 Memory Batteries An internal battery is provided to power RAM memory as well as the r...

Страница 61: ...es The batteries need to be changed once a year due to the limited shelf life of any type of battery 1 Remove the cover from the RS232 interface Figure 32 2 Remove the old batteries Install fresh batt...

Страница 62: ...rmanently damages the sensor Refer to Table 11 for acceptable cleaning solutions 2 Remove the screws from the protective cover Figure 33 and Figure 34 on page 61 3 Remove the cover and gasket 4 Swirl...

Страница 63: ...Sensor 1 Screws 6 32 x 5 16 4 Pressure Transducer 2 Protective Cover 5 Sensor 3 Gasket Figure 34 Removing the Protective Cover Oil filled Sensor 1 Screws 6 32 x 5 16 4 Gasket 2 Protective Cover 5 Pres...

Страница 64: ...e set screw 7 Insert the syringe tip slowly into the set screw hole and dispense the oil Figure 37 on page 63 Note While dispensing the oil hold the probe at an angle to allow the air to be pushed out...

Страница 65: ...be replaced immediately Important Note When the beads begin to turn pink replace or recondition the beads Permanent damage to the sensor may occur if the desiccant is not maintained Never operate the...

Страница 66: ...ilter is probably torn Replace the filter If the desiccant beads are completely saturated with water or the filter has been saturated with water or grease replace the filter Note If the filter needs t...

Страница 67: ...the tape into the threads until it conforms to the shape of the threads 4 Place a new filter over the hole Make sure that the smooth side of the filter faces the inside of the canister 5 Place the th...

Страница 68: ...66 Maintenance...

Страница 69: ...ensor 0 10 ft range 75 ft cable with connector 88064 075 I S Oil Filled Submerged AV Sensor 0 10 ft range 100 ft cable with connector 88064 100 I S Oil Filled Submerged AV Sensor 0 30 ft range 30 ft c...

Страница 70: ...o 12 in Pipes 6 inches 4021 8 inches 4022 10 inches 4023 12 inches 4024 In Pipe Sensor Mounting Bands for 15 to 42 in Pipes 15 inches 9706100 18 inches 9706200 21 inches 9706300 24 inches 9706400 24 i...

Страница 71: ...69 Replacement Parts and Accessories 8 5 Mounting Plate Hardware for Directly Mounting to Pipe Wall Sensor Type Part Number Submerged Pressure 4939 In Pipe 3875...

Страница 72: ...70 Replacement Parts and Accessories...

Страница 73: ...Customer Service Department 1 800 368 2723 and get a Service Request Number SRN and shipping label 4 Use the shipping label provided and ship the equipment in the original packaging if possible Note D...

Страница 74: ...www flow tronic com For France Spain and Great Britain France HACH LANGE FRANCE S A S 33 Rue du Ballon 93165 Noisy le Grand Telephone 33 0 1 48 15 68 70 Fax 33 0 1 48 15 80 00 Email info hach lange fr...

Страница 75: ...aused by any repair or attempted repair not authorized by Hach Company Any product not used in accordance with the instructions furnished by Hach Company Freight charges to return merchandise to Hach...

Страница 76: ...74...

Страница 77: ...of the weir bottom of the V and the submerged sensor is 4 in 10 cm The distance between the surface of the water and the submerged sensor is 6 in 15 cm The level of water which is contributing to flow...

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Страница 79: ...Devices Figure 41 Parshall Flume A Length of Converging Section 2 3A Length to Stilling Well Stilling Well Optional FLOW Submerged Probe Submerged Probe Submerged Flow Free Flow Head Measurement Poin...

Страница 80: ...tegral Approach FLOW FLOW Submerged Probe Preferred Head Measurement Point Preferred Head Measurement Point D Conduit Diameter 2 Lower Transition Throat Water Surface Small jump should occur here Uppe...

Страница 81: ...Preferred Head Measurement Point Water Surface Small jump should occur here FLOW FLOW Submerged Probe Preferred Head Measurement Point Lower Transition Throat Upper Transition Upstream Depth Downstrea...

Страница 82: ...mary Devices Figure 44 H Flume FLOW FLOW Pipe Stub Inlet Bulkhead Approach Section H W T 4 1 3 2 Head Measurement Section Elevation View Top View Figure 45 Round Pipes FLOW Q FLOW Q Elevation View Top...

Страница 83: ...50 show how to install the 911 and 940 Flow Meters in various applications Figure 46 shows Model 911 installed in a manhole with a single level velocity sensor stored in the small diameter pipe Figure...

Страница 84: ...eters do not require profiling to establish average velocity allowing setup in a dry channel Figure 47 Rapid signal processing and temperature compensation accurately record the change from dry to wet...

Страница 85: ...8 shows a storm vault accepting flow from two locations The 940 Flow Meter monitors level velocity and flow in both pipes and sends data via modem to a central location Figure 48 Installation for Mult...

Страница 86: ...nt the 940 Flow Meter can measure depth and velocity in the primary channel and measure discharge in the overflow channel See Figure 49 In some instances the overflow in some CSO applications may be t...

Страница 87: ...hain of custody In Figure 50 the 940 Flow Meter provides ultrasonic measurement of flow in a Parshall flume while also measuring flow upstream using the Continuity Equation Q AV This ensures no loss o...

Страница 88: ...86 Channel Installation Options...

Страница 89: ...ED indicator turns off Temperature At higher temperatures the electrical capacity that can be taken out of a battery increases At lower temperatures the electrical capacity that can be taken out of a...

Страница 90: ...charger with the Lithium Ion battery pack DANGER The use of chargers other than those provided by the manufacturer for use with these batteries is not recommended and may damage the battery or shorte...

Страница 91: ...sources of any kind To maximize battery life operate the battery at an ambient temperature of 20 C 70 F The permissible operating temperature range is 15 to 50 C 5 to 120 F Use in the 5 to 35 C 47 to...

Страница 92: ...90 Batteries and Chargers...

Страница 93: ...a slave 940 The 940 is always considered the slave never a master The master can address individual 940 Flow Meters or can broadcast a message to instruments within its scope Responses are never retu...

Страница 94: ...field of an ASCII message frame consists of two ASCII characters that provide an additional level of error checking to verify the integrity of the communication media The LRC field is one byte that co...

Страница 95: ...13 Modbus ASCII Memory Input Output Referencing System Reference Indicator Reference Type Meaning 0xxxx Discrete Output or Coil Binary 1xxxx Discrete Input Binary 3xxxx Input Register Real 4xxxx Outp...

Страница 96: ...7 Cond Temp Integer 16 1 00 3C 40061 Level 2 Integer 16 1 00 3C 40061 Velocity 2 Integer 16 1 00 3E 40063 Flow 1 Integer 16 1 00 41 40066 1 The addresses shown above return a code that represents the...

Страница 97: ...08 to obtain the level information which requires two registers to store the floating point value Note that registers are referenced from zero in the data field CFM 17 DEGREE_F 42 CFH 18 MILS 43 CFD 1...

Страница 98: ...potential communication lag For example in a Wonderware application running a Modbus ASCII DDE server the COM port reply time out must be set to 12 seconds This is the amount of time that the meter i...

Страница 99: ...point value is represented by two data words Because a single Modicon register consists of one word or 2 bytes two consecutive Modicon registers are needed to store one floating point value The repres...

Страница 100: ...chneider Automation Modicon ladder logic block library user guide North Andover MA AEG Schneider Automation Inc 1996 D 16 Troubleshooting Tips Problem 940 Flow Meter responds to some Modbus messages b...

Страница 101: ...eck the Modbus mode There are two different forms of Modbus ASCII and RTU Currently the 940 Flow Meter only support Modbus ASCII Consequently the device communicating with the meter must be set up for...

Страница 102: ...e values as Integers If the server or MMI is formatting this data as any data type other than Integer the values will not be read or displayed correctly Different Modbus servers and MMI manufacturers...

Страница 103: ...Installation Requirements 8 Intrinsically Safe Wiring Practices 9 Invisible Range 43 L Ladder Rungs 43 Lead Acid Gel Cell 87 M Maintenance 57 Memory Batteries 58 Multiple Source Monitoring at a Single...

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