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Magnetrol Echotel 335, Инструкция по установке и программированию, Страница: 22 / 28

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21

P41-45:

Flume/weir dimensions

See next pages.  

FACTORY DEFAULT: 

0

P46

:

Distance between transducer face and level of Q=0

P46

 is 

always

 the distance between the transducer face and the level, where the volume flow is 0.  FACTORY DEFAULT:

0

Flume / Weir Dimensions

P40= 00

          .

          .

          .

         08

Magnetrol Parshall flumes (GPA1P1 … GPA-1P9)

For further details see the Manual of the Parshall flume

Sensor

P4

6

Sensor

P40= 09

General Parshall flume

0.305 < P42(width) <2.44

0.026

Q[m

3

/s]= 0.372*P42*(h/0.305)

1.569*s

2.5 < P42
Q[m

3

/s]= K*P42*h

1.6

P= 2/3*A

A

h

P46

Sensor

Sensor

P42

P

P40= 10

Palmer-Bowlus (D/2) flume

Q[m

3

/s]= f(h1/P41)*P41

2.5

,

where h1[m]= h+(P41/10)

P04

P46

h

P41

D

D/10

P40= 11

Palmer-Bowlus (D/3) flume

Q[m

3

/s]= f(h1/P41)*P41

2.5

,

 where h1[m]= h+(P41/10)

P04

P46

h

P41

D

D/10

P40= 12

Palmer-Bowlus (Rectangular) flume

Q[m

3

/s]= C*P42*h

1.5

,

where C= f(P41/P42)

D

P42

P46

P04

h

D/10

P41

s[m]

K

3.05

2.450

4.57

2.400

6.10

2.370

7.62

2.350

9.14

2.340

15.24

2.320

Содержание Echotel 335

Страница 1: ...Echotel Series 335 338 Compact Ultrasonic Transmitter INSTALLATION and PROGRAMMING MANUAL...

Страница 2: ...he 046 8108 001 Programming Module 9 5 2 3 Indications of the 046 8108 001 Programming Module and the LEDs 9 5 2 4 Current Output Scaling 10 5 2 5 QUICKSET 11 5 2 6 Full Parameter Access 12 6 PARAMETE...

Страница 3: ...nic level metering technology is based on the principle of measuring the time required for the ultrasound pulses to make a round trip from the sensor to the level to be measured and back The sensor em...

Страница 4: ...50 V AC 3 A HART optional Outputs Display 375 0SAP 100 6 digits icons and bargraph Custom LCD Electrical connections 2 x Pg16 and 2 x _ NPT Wire cross section 0 5 2 5 mm2 Electrical protection Class I...

Страница 5: ...hotel FOAM Foaming of the liquid surface may render ultrasonic level measuring impossible If possible a location should be found where foaming is the smallest the device should be located as far as po...

Страница 6: ...ic isolation is not provided The unit may be damaged by electrostatic discharge EDS via terminal thus apply the precautions commonly used to avoid electrostatic discharge 5 PROGRAMMING The Echotel wil...

Страница 7: ...g completed all other magnetic influences will be avoided Minimum level 0 empty tank assignment to 4 mA Place the Echotel at a distance to the target corresponding to the required maximum distance min...

Страница 8: ...22 mA 3 Place magnet to the symbol A Programming completed Damping Check valid echo as above Action LED indication 1 Place magnet to the symbol B Transmitter in programming mode 2 Place magnet to the...

Страница 9: ...ent of level to de energising of the relay Full Parameter Access 5 2 6 All features of the Echotel can be accessed by parameter addresses Example Measurement configuration Outputs Measurement optimali...

Страница 10: ...a ll modifica ti ons returnto pa r ameter addr ess P a r ame t e r va lu e A c tu a l Notes If the parameter value is not accessible i e the parameter address keeps blinking after pressing ENTER E th...

Страница 11: ...level value measured by the Echotel ENTER E Save actual value on the screen and move to the next screen NEXT UP Quit Current Output Scaling without saving the modifications NEXT DOWN Display Factory D...

Страница 12: ...value with level in tank or a fix target i e wall GET LEVEL functions only if ECHO LED is lit and save it as above DEFAULT maximum measuring distance m see Technical Data Table 4 mA xxxx level value...

Страница 13: ...ill be displayed for warning Neglect the modification of the Parameter Value and return to the Parameter Address without saving the modifications NEXT DOWN Reset entire device to Factory Default Since...

Страница 14: ...in mind that the instrument is measuring distance as basic quantity Measured distance Resolution Xmin 2m 1mm 2m 5m 2mm 5m 10m 5mm over 10m 10mm The resolution depending on the distance can be consider...

Страница 15: ...of P04 see table below can also be displayed by double key pressing NEXT DOWN Echotel Maximum measuring distance Level transmitters for liquids PP or PVDF m ft Echotel 338 6 20 Echoptel 335 8 26 Keep...

Страница 16: ...end of the measuring range for example tanks with heaters or other interfering objects sludge cone of silo etc may cause faulty readings If the level of the medium sinks below the blocked out range S...

Страница 17: ...e Echotel will provide one of the current outputs below For errors and their indications see Chapter 7 a Error indication according to NAMUR 0 Hold last value 1 3 6 mA 2 22 mA FACTORY DEFAULT 0 6 3 Re...

Страница 18: ...s parameter provides information for the QUEST software for optimising the echo search pattern a Estimated angle of repose 0 No angle of repose default 1 Below 15 2 Over 15 The optimal setting of this...

Страница 19: ...Liquids P00 Li P27 2000 P28 a Echo loss handling a Echo loss error indication Remark 0 Delayed During echo loss display and analogue output will hold last value If the echo loss prevails for 10 sec p...

Страница 20: ...eter if the Echotel unambiguously selects a wrong echo for example the echo reflected from the surface is much weaker than the interfering one s see figure beside and on next page Enter the distance o...

Страница 21: ...ormula data Also to be set Type Calculation formula Qmin l s Qmax l s P cm 00 GPA 1P1 Q l s 60 87 h1 552 0 26 5 38 30 P46 01 GPA 1P2 Q l s 119 7 h1 553 0 52 13 3 34 P46 02 GPA 1P3 Q l s 178 4 h1 555 0...

Страница 22: ...Parshall flume Sensor P 46 Sensor P40 09 General Parshall flume 0 305 P42 width 2 44 0 026 Q m3 s 0 372 P42 h 0 305 1 569 s 2 5 P42 Q m3 s K P42 h1 6 P 2 3 A A h P46 Sensor Sensor P42 P P40 10 Palmer...

Страница 23: ...oidal weir 0 0032 Q m3 s 82 20 P41 100 0 5 P42 m 15 0 1 h m 2 Q m3 s 1 772 P42 h1 5 1 320 tg P41 2 h2 47 Accuracy 5 P04 P46 h P42 P41 P40 17 Special Trapezoidal 4 1 weir 0 0018 Q m3 s 50 0 3 P42 m 10...

Страница 24: ...s in the table Address Serial number of the data pair Measurement value to be transmitter and displayed Conditions of correct programming of the data pairs Left column L Right column r L 1 0 r 1 L i r...

Страница 25: ...he actual close end blocking distance is displayed Provides useful information if automatic blocking was selected in P05 6 9 Additional Open Channel Flow Metering Features P76 LEV Head of flow The Hea...

Страница 26: ...order to program the device locked by a secret code first enter the Secret Code in P99 The Secret Code is re activated each time the Echotel is returned to Measurement Mode To delete the Secret Code...

Страница 27: ...4 14 Maximum measuring distance P29 18 Blocking out of object 1 P05 15 Minimum measuring dist Close end blocking P30 18 Blocking out of object 2 P06 15 Far end blocking P31 19 Sound velocity at 20_C P...

Страница 28: ...N A P71 24 Distance of the of Measuring Window read out parameter P96 N A P72 24 Amplitude of the Echo in the Measuring read out parameter P97 24 Software code P73 24 Echo Position time read out para...

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