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Flomec 490 Скачать руководство пользователя страница 16

15

Installation Guidelines

5.0

INSTALLATION GUIDELINES

1.

GENERAL

The flow profile must be uniform at the point where the Insertion Meter is to be installed, otherwise
inaccurate and unstable readings will result.

British Standard: BS 1042 gives a full insight into flow conditioning for inferential flow devices

The general rule is to have a minimum of 10 diameters of straight pipe runs before the flowmeter
(upstream) and 5 diameters after (downstream). These straight runs must not contain any other items
such as Valves, Bends, Tees, Probes, or Reducers etc.

Any Valves immediately outside the straight runs require doubling of the straight pipe run lengths.

2.

COMMON CAUSES OF NON-UNIFORM FLOW

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Содержание 490

Страница 1: ...INSTRUCTION MANUAL BI DIRECTIONAL INSERTION METER LOCK ...

Страница 2: ...ffect 7 3 2 Optional Hall Effect Reed switch output 8 3 3 Optional Reed switch output 8 3 4 Instrument cable installation requirements 9 3 5 Pulse output selection standard outputs 9 3 6 QP Quadrature pulse output option 10 3 7 Bi directional flow using QP option 10 3 8 Connection to family instruments 11 4 0 CALIBRATION K factor for meter 4 1 K factors for common pipe ID sizes 575mm 12 4 2 K fact...

Страница 3: ... details 2 After screwing the Insertion Meter in place ensure the flow alignment mark located on the top positioning collar of the meter aligns with the flow in the pipe refer page 5 This ensures the paddle is correctly aligned to the flow Note The meter is bi directional so a flow direction arrow is not provided 3 Calculate and adjust the height of the Insertion Meter refer page 5 4 Electrical In...

Страница 4: ...e rotor pass by pulse sensors within the transducer body inturn this produces frequency outputs proportional to flow rate 1 4 Specifications subject to change without notice Model 490 525 Suits pipe sizes 40mm 900mm 50mm 2500mm 1 5 36 inches 2 100 inches Flow range 0 25 6300 litres sec 0 4 49000 litres sec 4 99600 USGPM 6 780000 USGPM Process connections 1 5 or 2 NPT or BSPT 2 NPT or BSPT Velocity...

Страница 5: ...bstructions such as pumps valves or strainers will require longer straight runs before and after the Insertion Meter 2 2 Meter installation orientation Cut a 40mm diameter hole 1 6 on either the 2 10 or 12 o clock positions of the pipe If there is any likelihood of air entrainment in a horizontal pipe do not locate the flow transducer in the 12 o clock position Install a female threaded weld on fi...

Страница 6: ...1 as required so that the distance between the top of the hex adaptor 2 and the top of the positioning collar 3 equals your calculated distance A for DP490 or AA for model DP525 Retighten the height adjustment nuts 1 2 4 Flow direction orientation The unit is bi directional however the paddle must be aligned with the direction of flow Using a 2mm hex key Allen key unlock the locking screw located ...

Страница 7: ...ll valve 2 5 Hot tap installation model DP525 IMPORTANT Before removing the DP525 from the installation first withdraw the Meter body to the maximum distance allowed by the three height adjusting threaded rods This will enable the isolating valve to be fully closed without damaging the paddle FLOW 2 Nipple 2 Weld O let threadolet 2 ball or gate isolation valve Allow min 40mm I D to clear metering ...

Страница 8: ...etic sensor and high temperature output options A1 A2 B2 B1 b1 VOLTAGE PULSE OUTPUT Screen Yellow Green SQUARE WAVE PULSE OUTPUT Red VDC supply White Sig output Black 0v ground Terminal box option terminal connections Pull up resistor required they are generally incorporated in most receiving instruments Hex adaptor Rotor Body Positioning collar Height adjustment nuts 1 5 or 2 BSPT or NPT LOCK ...

Страница 9: ...approved I S barrier Note The Reed switch produces 1 3rd the normal pulse output value eg 1 3 the standard K factor Conductor color coding also applies to the Non magnetic sensor and high temperature output options A1 A2 B2 B1 b1 REED SWITCH OUTPUT Screen Yellow Green SQUARE WAVE OUTPUT Red VDC supply White Sig output Black 0v ground Terminal box option terminal connections Pull up resistor requir...

Страница 10: ...tres 3300 ft An optional intrinsically safe I S Reed Switch only output is available see page 7 Voltage pulse pulse wire output A self generating pulse output which produces a strong 1 5 volt voltage spike of approximately 10 micro second duration with no dependence on rotor speed Square Wave Pulse Hall sensor also applies to non magnetic QP Hall outputs An NPN open collector transistor pulse outp...

Страница 11: ...faced with the Pulse Discriminator Module PD2 The PD2 accepts the Quadrature pulse inputs from these will discriminate between forward reverse flow Two individual proportional pulse outputs can then be sent to appropriate totalising registers or an add and subtract flow rate totaliser It is important to note that the Quadrature Pulse option has the same pulse resolution pulses unit volume as a sta...

Страница 12: ...tion Meter cable should not be run with other high energy cables clause 3 3 yellow Screen Screen yellow green 6 5 4 3 2 1 7 0V ground 8 9 10 11 12 13 14 DIP switches all in the OFF position 3 2 1 O N RATE TOTALISER ECOBATCH INSTRUMENTS 1 2 3 DIP switches 2 3 to be in the OFF position ON green Vdc gnd 4 5 6 BT11 BATTERY TOTALISER gnd 1 2 3 RATE TOTALISER RESET PROGRAM ENTER gal RUN ACCUM TOTAL STOP...

Страница 13: ...uare wave pulse output Pulses per litre 28647 pipe ID mm Pulses per M 28647000 pipe ID mm Pulses per US gallon 168 14 pipe ID inches Pulses per Imp gallon 201 94 pipe ID inches Pipe detail NB pipe ID inches mm p litre p m3 p USgal p litre p m3 p USgal 1 5 40 9 18 678 18678 70 695 21 524 21524 81 468 2 52 6 11 238 11238 42 534 12 818 12818 48 517 2 5 62 7 7 880 7880 29 824 8 899 8899 33 682 3 78 0 ...

Страница 14: ...h 100mm ID A 24 0 2 pulses litre 1273 2 x 24 0 10000 3 056 p litre K factor for m multiply by 1000 eg K 3056 p m K factor for megalitres multiply by 1000000 eg K 3056000 p megalitre NOTE K factors for Reed Switch output option are 1 3 the standard factors of voltage pulse output 22 22 5 23 23 5 24 24 5 25 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 A pipe I...

Страница 15: ... gal 24 51 x A from graph pipe ID inches Example b K factor for 10 pipe 1 from graph 10 ID A 7 01 2 pulses gal 24 51 x 7 01 100 1 718 p gal NOTE K factors for Reed Switch output option are 1 3 the factors of the square wave pulse output 6 8 6 9 7 0 7 1 7 2 7 3 7 4 7 5 7 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A pipe ID inches Pipe ID 19 5 above A 6 86 ...

Страница 16: ... a full insight into flow conditioning for inferential flow devices The general rule is to have a minimum of 10 diameters of straight pipe runs before the flowmeter upstream and 5 diameters after downstream These straight runs must not contain any other items such as Valves Bends Tees Probes or Reducers etc Any Valves immediately outside the straight runs require doubling of the straight pipe run ...

Страница 17: ...Installation Guidelines 16 3 PRECAUTIONS FOR AVOIDING NON UNIFORM FLOW 4 RECOMMENDED LENGHTS OF STRAIGHT PIPE FOR TYPICAL CASES 5 RECOMMENDED SOLUTIONS FOR RESTRICTED CASES ...

Страница 18: ...NOTES ...

Страница 19: ...NOTES ...

Страница 20: ...IM DP 1716 2017 Great Plains Industries Inc All Rights Reserved Great Plains Industries Inc 888 996 3837 FLOMEC net ...

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