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Appendix

Deltatop DP71B, DP72B, DP73B

Hauser

Appendix

9.1

Measuring principle

P01-DPxxx-15-00-00-xx-002

The front of the Pitot tube is exposed to the static pressure p

stat

plus the dynamic pressure p

dyn

. The

side and the back of the tube is exposed only to the static pressure p

stat

. The resulting

differential

pressure

can be used to calculate the

flow rate Q

The relationship between flow rate (Q) and differential pressure (

p) is given by a square root

function:

P01-DOxxxxx-15-xx-xx-xx-008

Downstream of the Pitot tube the static pressure p

stat

is reduced by the permanent pressure loss

Δω

With Pitot tubes this pressure loss

Δω

is much less significant than with other primary elements.

–

dyn

stat

Q ~

Содержание Deltatop DP71B

Страница 1: ...BA386P 00 EN 07 09 71098177 Operating Instructions Deltatop DP71B DP72B DP73B Pitot tubes for differential pressure flow measurement r...

Страница 2: ......

Страница 3: ...tallation steps for the flowtap flange socket version with a safety chain 27 3 13 Installation steps for the flowtap welding socket version with a spindle 29 3 14 Installation steps for the flowtap we...

Страница 4: ...incorrect installation or configuration Installation electrical connection startup operation and maintenance of the measuring device must therefore be carried out exclusively by trained specialists au...

Страница 5: ...cate hazardous locations Devices located in and wiring entering areas designated as hazardous locations must comply with the stated type of protection Safe area non hazardous location Symbol used in d...

Страница 6: ...ess Wall thickness of the measuring pipe Press rate Pressure rating Mat of primary Material of the Pitot tube Medium Medium for which the device has been sized Flow rate Flow rate for which the device...

Страница 7: ...itter HART BA294P Deltabar S Differential pressure transmitter PROFIBUS PA BA301P Deltabar S Differential pressure transmitter FOUNDATION FIELDBUS Description of Device Functions BA274P Cerabar S Delt...

Страница 8: ...lefeld Germany Document Device Designation Technical Information TI434P Deltabar M Differential pressure transmitter Operating Instructions BA382P Deltabar M Differential pressure transmitter HART Saf...

Страница 9: ...ort Caution Follow the safety instructions and transport conditions for devices of more than 39 68 lbs 18 kg Do not lift the measuring device by the housing of the transmitter in order to transport it...

Страница 10: ...only possible for clean media 1 Pitot tube 2 Shut off valves 3 Three valve manifold 4 Deltabar differential pressure transmitter 5 Separator 6 Drain valves 1 2 3 4 5 6 2 5 1 2 3 5 6 2 4 5 A B 6 6 Comp...

Страница 11: ...or capturing and removing condensate P01 DPxxxxxx 11 xx xx xx 006 A Preferred configuration B Alternative configuration if the transmitter cannot be mounted above the pipe 1 Pitot tube 2 Shut off valv...

Страница 12: ...Examples schematic P01 DPxxxxxx 11 xx xx xx 008 1 Upstream length 2 Downstream length a 90 bend b Valve open c 2x90 bend 3 5 2 Homogeneity The medium must be homogeneous Changes of the state of aggre...

Страница 13: ...e sufficient heat dissipation Otherwise the transmitter may become overheated or undercooled This applies equally to both the compact and the remote version Caution Danger of electronics overheating M...

Страница 14: ...PPxxxxx 15 xx xx xx 007 1 Absolute pressure probe 2 Pitot tube and differential pressure transmitter 3 Temperature probe 4 Flow computer 1 2 3 4 RMC621 RMC621 Endress Hauser Endress Hauser Dp T p 3D C...

Страница 15: ...the sensor so that the arrow labeled flow on the head is in the direction of the flow in the pipe to within the following limits P01 DPxxxxxx 11 xx xx xx 019 A Axial alignment B Radial alignment C Al...

Страница 16: ...ed mounting position For liquids or steam 10 For gases 11 For remote versions The shut off valves are mounted to the pressure taps of the primary element For remote versions The impulse pipes have to...

Страница 17: ...the welding socket hand tight and insert the sensor assembly into the pipe 4 Tack the welding socket into position by using the appropriate weld gap typically 1 16 1 5 mm 5 Remove the sensor 6 Protec...

Страница 18: ...inst the opposite wall with a force of at least 50 lbs 22 kg tighten the union compression nut 14 Check the sensor alignment again If the sensor is not aligned correctly loosen the union compression n...

Страница 19: ...ody into the welding socket 9 With the follower and packing rings already in place insert the sensor into the spring lock body until the tip of the sensor hits the opposite side of the pipe Note The t...

Страница 20: ...o contact with the follower the sensor will not be properly bottomed in the pipe If this occurs consult the factory before proceeding 3 8 1 Installation of the shut off valves for the remote version T...

Страница 21: ...1 Completely depressurize and drain the pipe prior to installing the Deltatop 2 Drill a hole with the diameter D1 into the pipe 3 Loosely bolt the sensor gasket and mounting flange together hand tigh...

Страница 22: ...weld the cap into position 9 Place the supplied gasket surface on the flange insert the probe into the welding socket and make sure that the arrow on the probe head points in the flow direction 10 Ti...

Страница 23: ...he flange must be at 45 angles for four holes or 22 5 angles for eight holes to the pipe axis P01 DP6xxxx 17 xx xx xx 003 8 Remove the sensor and the sensor flange and finish welding the weld coupling...

Страница 24: ...ench on the load nuts to prevent them from rotating While not allowing the load nuts to rotate 17 Tighten the jam nuts 1 8 turn beyond hand tight 18 Using a torque wrench tighten the three packing bol...

Страница 25: ...ppropriate thread sealant to the access nipple and thread the access nipple into the access valve 9 Orient the sensor such that the arrow labeled flow on the device head is in the direction of the flo...

Страница 26: ...end of the pipe 6 Once the sensor is completely bottomed slide the retaining ring over the three retaining studs and tighten the retaining nuts until the ring presses firmly against the weld ring 7 J...

Страница 27: ...alve such that the valve stem is parallel to the centerline of the pipe b For vertical pipes orient the valve such that the valve stem is perpendicular to the centerline of the pipe P01 DP7xxxx 17 xx...

Страница 28: ...end of the come along around the circumference of the pipe and firmly secure it 4 Completely open the access valve 5 Insert the Deltatop until the tip of the sensor completely bottoms on the opposite...

Страница 29: ...elding socket onto the pipe by using the appropriate weld gap typically 1 16 1 5 mm 4 Protect the threads on the welding socket and finish welding the welding socket to the pipe as per the applicable...

Страница 30: ...ased prior to inserting the sensor Note A high temperature grease should be used for all steam applications and for temperatures above 200 F 100 C 2 Completely open the access valve 3 Then using the d...

Страница 31: ...specifications of the device Do the medium properties and process data match the specifications on the supplied calculation sheet 1 Completely depressurize and drain the pipe prior to installing the...

Страница 32: ...d gaskets 3 14 3 Sensor insertion of the probe without process interruption Warning The flow rate must be decreased to the amount stated on the Deltatop tag the maximum insertion withdrawn dp flow lim...

Страница 33: ...to be mounted 3 Position the welding socket over the center of the mark 4 Tack weld the welding socket into position by using the appropriate weld gap Note In the case of a flange note the orientatio...

Страница 34: ...labeling correct visual inspection Is the orientation chosen for the sensor correct in other words suitable for the sensor type application and medium properties in particular medium temperature Is th...

Страница 35: ...ure sensor Caution Before connecting please note the following The power supply must be identical to the data on the nameplate Switch off the power supply before connecting up the device Connect the e...

Страница 36: ...used the configuration data can be obtained from the supplied calculation sheet or can be calculated by the Applicator selection and sizing tool Note The formulae according to which the flow is calcu...

Страница 37: ...ion is not applied twice If the real operating conditions differ from the conditions used in the calculation sheet the density of the gas will change and thus also the calculated flow rate will change...

Страница 38: ...th two shut off valves per impulse pipe may be recommended or required Operating principle The primary shut off provides separation close to the process between the measuring system and the measuring...

Страница 39: ...valve manifold milled B A 1 2 3 1 3 2 3 1 5 5 4 2 1 3 2 4 A B Valve Application 1 2 Separates the Deltabar differential pressure transmitter from the process 3 4 Equalization valve zero point adjustm...

Страница 40: ...e transmitter are exposed to the same static process pressure In this state zero point adjustment of the Deltabar differential pressure can be performed refer to the Operating Instructions of the Delt...

Страница 41: ...Deltabar S differential pressure transmitter are described in the following Operating Instructions The appropriate Operating Instructions are supplied together with the Deltabar S or Deltabar M Commun...

Страница 42: ...turbed flow caused by fixtures weld seams protruding sealings inlets and outlets fittings etc Remove obstacles disturbing the flow profile Relative humidity does not match the planning data Make sure...

Страница 43: ...edge sharpness traces of wear Caution Required maintenance work must be carried out with the assistance of the responsible department and or trained staff Safety instructions of these departments and...

Страница 44: ...copy of the Declaration of Contamination is included at the end of this operating manual Only then can Endress Hauser transport examine and repair a returned device Additionally specify the following...

Страница 45: ...tubes DA73M Shut off valves see Technical Information TI441P DA74M Manifold see Technical Information TI441P Shut off valves and the manifold can be ordered together with the Pitot tube Deltatop They...

Страница 46: ...only to the static pressure pstat The resulting differential pressure p can be used to calculate the flow rate Q The relationship between flow rate Q and differential pressure p is given by a square...

Страница 47: ...sity at standard conditions kg m3 b Medium density at operating conditions kg m3 A Cross sectional area of the pipe m2 b Width of the probe profile perpendicular to the flow direction m k k factor of...

Страница 48: ...Appendix Deltatop DP71B DP72B DP73B 48 Endress Hauser...

Страница 49: ...Deltatop DP71B DP72B DP73B Appendix Endress Hauser 49...

Страница 50: ...ion 44 Deltabar S 35 36 Downstream length 12 F Flange mounting 29 31 G Gases 11 H Hazardous locations 4 Heat insulation 13 L Liquids 10 M Mass flow 36 Measuring range 15 N Nameplate 6 P Pressure compe...

Страница 51: ..._________________________________________________________________________ ______________________________________________________________________________________________________________ We hereby certi...

Страница 52: ...www endress com worldwide BA386P 00 EN 07 09 71098177 CCS FM SGML 6 0 ProMoDo 71098177...

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