FlowCERT (UL)

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BS3680 Flumes Point of Measurement The transducer must be above the maximum head P704 by at least the near blanking distance P107. For a Rectangular and U-throated flume, the head is measured at 3 to 4 times the maximum head upstream from the beginning of the converging section, to ensure the surface of the liquid is not affected by turbulence. (See DRWG 6) Page 44
Calculations Rectangular Flume ABSOLUTE If the flow calculation is to be absolute P702 = 1 the flow will be calculated using the formula: q = (2/3) 1.5 gn 0.5 C s C v C d bh 1.5 Where: q = flowrate gn = gravitational acceleration (nominal value = 980.66 cm/s 2 ) C s = shape coefficient (value = 1) C v = velocity coefficient calculated by FlowCERT LITE P721 C d = discharge coeffecient calculated by FlowCERT LITE P722 b = throat width P711 h = head RATIOMETRIC If the flow calculation is to be ratiometric P702 = 2 the flow will be calculated using the formula: q= q cal (C v /C vcal )(C d /C dcal )(h/h cal ) 1.5 Where: q = flowrate q cal = flowrate at maximum head P705 C v = velocity coefficient calculated by FlowCERT LITE C vcal = velocity coefficient at maximum head C d = discharge coeffecient calculated by FlowCERT LITE P722 C dcal = discharge coefficient at maximum head h = head = maximum head P704 h cal Page 45
Page 1: FlowCERT LITE (UL) INSTRUCTION MANU
Page 5 and 6: Contents Chapter 1 Start Here… ..
Page 7: Echo Processing Parameters ........
Page 10 and 11: About the FlowCERT LITE The FlowCER
Page 12 and 13: Product Specification Physical Wall
Page 14 and 15: EC DECLARATION OF CONFORMITY Page 6
Page 16 and 17: Location All electronic products ar
Page 18 and 19: Page 10 The full dimensions of the
Page 20 and 21: Terminal Connections Important Info
Page 22 and 23: Important Information Please note t
Page 24 and 25: Important Information Before applyi
Page 26 and 27: Chapter 3 How To Use Your FlowCERT
Page 28 and 29: How to Access Program Mode Wall and
Page 30 and 31: Menu Keys The menu keys have the fo
Page 32 and 33: Note You can tell which part of the
Page 34 and 35: Using the RS232 Serial Interface Th
Page 36 and 37: Parameter Defaults Factory Defaults
Page 38 and 39: Chapter 4 Quick Setup Guide This qu
Page 40 and 41: Page 32 Once you have chosen your a
Page 42 and 43: Wait ….. Parameter Default Descri
Page 44 and 45: For More Options Hit Enter Paramete
Page 46 and 47: Point of Measurement The transducer
Page 48 and 49: Calculations ABSOLUTE If the flow c
Page 50 and 51: Example 1 ‘V’ Notch Weir In thi
Page 54 and 55: U-Throated Flume ABSOLUTE If the fl
Page 56 and 57: To program the FlowCERT LITE for Ex
Page 58 and 59: RATIOMETRIC If the flow calculation
Page 60 and 61: To program the FlowCERT LITE for Ex
Page 62 and 63: RATIOMETRIC BS3680 Rectangular Weir
Page 64 and 65: V-notch angle weirs, the head is me
Page 66 and 67: Chapter 5 Parameter Guide This sect
Page 68 and 69: Relays Menu Relay 1 Relay 2 Relay 3
Page 70 and 71: OCM PMD Setup Dimensions Calculatio
Page 72 and 73: Compensation Menu Offset Temperatur
Page 74 and 75: System Menu Passcode Backup System
Page 76 and 77: Test Menu Simulation Hardware P980
Page 78 and 79: Chapter 6 Parameter Listing and Des
Page 80 and 81: P106 Span This parameter should be
Page 82 and 83: P210, P220, P230, P240, P250 - Rela
Page 84 and 85: The third parameter for each relay
Page 86 and 87: The fourth parameter and the fifth
Page 88 and 89: Page 80 Pump Duty Description 5= Du
Page 90 and 91: The fourth parameter and the fifth
Page 92 and 93: The third parameter for each relay
Page 94 and 95: Miscellaneous When P210, 220, 230,
Page 96 and 97: Common Parameters P216, P226, P236,
Page 98 and 99: P584 Maximum Temperature Date This
Page 100 and 101: If P700 = 3 (BS 3680 Weir) Select f
Page 102 and 103:
P707 Time Units Select the Time Uni
Page 104 and 105:
P714 Roughness Coefficient (Ks) Whe
Page 106 and 107:
Calculations The following paramete
Page 108 and 109:
Display Parameters Options P800 Dis
Page 110 and 111:
Auxiliary P810 Units This parameter
Page 112 and 113:
P823 Totaliser Multiplication Facto
Page 114 and 115:
Operation P831 mA Mode This paramet
Page 116 and 117:
Allocation P841 mA Allocation By de
Page 118 and 119:
Velocity P860 Sound Velocity This p
Page 120 and 121:
Filters The following two parameter
Page 122 and 123:
P906 Side Clearance This parameter
Page 124 and 125:
Date & Time The date and time is us
Page 126 and 127:
Daylight Saving Time Important Info
Page 128 and 129:
P977 End Day Use this parameter to
Page 130 and 131:
Remote Alarm When a Modem is connec
Page 132 and 133:
Test Parameters Simulation P980 Sim
Page 134 and 135:
P991 Hard Test When this parameter
Page 136 and 137:
Chapter 7 Troubleshooting This sect
Page 138 and 139:
Parameter Record APPLICATION Operat
Page 140 and 141:
Relay 4 Parameter Details Entered V
Page 142 and 143:
OCM PMD Setup Parameter Details Ent
Page 144 and 145:
P773 Flow Breakpoint 22 -1.000 P774
Page 146 and 147:
mA OUTPUT Range Parameter Details E
Page 148 and 149:
Filters Parameter Details Entered V
Page 150:
DEVICE COMM RS232 Setup Parameter D
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FlowCERT (UL)

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