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NIVELCO EasyTREK SCD-31 4 Series, Installation And Programming Manual, Page: 26 / 32

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NIVELCO EasyTREK SCD-31 4 Series Installation And Programming Manual Download Page 26

26 / 32 

 scd340en21p07 

 

M

ANUAL ECHO SELECTION

 

 

5.4.5.

 

Volume measurement 

P40:  - - ba  Tank / silo shape 

FACTORY DEFAULT: 00 

ba 

Tank/silo shape 

Other parameters to be 

set 

 

Caution! 

The value "a" defining the shape 

of the container must be set 

first.  

b0 

Standing cylindrical tank shape: value of “b” as below bottom 

P40(b),

 

P41

 

01 

Standing cylindrical tank/silo with conical bottom 

P41

, 

P43

, 

P44

 

02 

Standing rectangular tank/silo (with chute

)

 

P41

, 

P42

, 

P43

, 

P44

, 

P45

 

b3 

Lying cylindrical tank shape: value of “b” as bellow bottom 

P40(b)

, 

P41

, 

P42

 

04 

Spherical tank 

P41 

 

Summary of Contents for EasyTREK SCD-31 4 Series

Page 1: ...scd340en21p07 1 32...

Page 2: ...2 32 scd340en21p07...

Page 3: ...SION 11 5 PUTTING INTO OPERATION ADJUSTING PROGRAMMING 13 5 1 PUTTING INTO OPERATION 13 5 1 1 Status indication signals in measuring mode 14 5 2 SPECIAL CONDITIONS OF EX USE 14 5 3 PROGRAMMING 14 5 4...

Page 4: ...scd340en21p07 4 32 CERTIFICATES Reference document number BKI ATEX Certificate No BKI16ATEX0020X 1 scd3404m060bp_07 EAC Certificate No RU C HU IM43 B 01471 scd3404o0600p_02...

Page 5: ...e required for the ultrasound pulses to make a round trip from the sensor to the level to be measured and back The sensor emits an ultrasonic pulse train and receives the echoes reflected The intellig...

Page 6: ...he EasyTREK s keep the connection with the MultiCONT through HART communication only This means that the measurement values are collected in cycles and that the modifications of the transmitter settin...

Page 7: ...inst surge transients If no echo continuous 3 6 mA or 22 mA selectable with programming Relay Electronic switch SPST 48 V AC 50 V DC 1 A Digital communication HART standard on the current output 2 3 2...

Page 8: ...S C D 3 Range Frequency Code Mounting Code Output Certificates Code 1 60 m 15 kHz 1 1 BSP thread 0 4 20 mA HART Relay 4 0 6 30 m 30 kHz 3 Aiming device J 4 20 mA HART SSR Ex ma ta IIIC 8 0 6 15 m 40...

Page 9: ...scd340en21p07 9 32 2 6 Dimensions SCD 310 SCD 310 Ex SCD 330 SCD 340 SCD 330 8 Ex SCD 340 8 Ex SAA 102 SCD 31J SCD 31J 8 Ex SCD 33J SCD 34J SCD 33J 8 Ex SCD 34J 8 Ex Ball joint Housing view from above...

Page 10: ...orporating a ball joint that is attached to the integrated level transmitter It is recommended to mount the transmitter on the roof of the tank silo using a flange see drawing above The Ball joint hou...

Page 11: ...lay or the solid state output The house must be grounded to have noise protection it should be grounded to the equipotential bonding net 3 wire DC powered devices can be created by connecting one of t...

Page 12: ...ultiCONT process control unit Power is supplied from a common external source the relays are not used HART communication and power supply of one SCD 300 transmitter from the MultiCONT process control...

Page 13: ...HE SENSORS When the material to be measured is being filled or emptied because of the formation of an angle of repose the vertically installed transmitter will experience a weak signal This can be eli...

Page 14: ...t of the unit the ambient temperature is equal to the process temperature The current output should be connected to a galvanic isolator 5 3 Programming HART interface of the EasyTREK enables full acce...

Page 15: ...ter will result in loading the factory default with the corresponding engineering units a OPERATING MEASUREMENT MODE 1 Free flowing solids level measurement b ENGINEERING UNITS ACCORDING TO C Metric U...

Page 16: ...the higher the a of the programmed parameter value the more measured or calculated process values can be transmitted through HART e g if P01 0 only the Distance if P01 4 Distance Level and Volume Exce...

Page 17: ...the greatest distance H between the sensor surface and the farthest surface to be measured in the application Factory default of this parameter is the maximum distance XM that can be measured by the...

Page 18: ...d blocking would be used for example to block out the echo originating from the bottom rim of a stand off pipe or from any object protruding into the ultrasonic cone near to the transmitter Automatic...

Page 19: ...in this range it gives special signals When level sinks below far end blocking Message of Sub 0 appears in EView in level and volume measurement mode Current output holds value corresponding to far en...

Page 20: ...EV or VOL measurement the min and max value has to be entered in the relevant engineering units of LEV m ft or VOL m3 ft3 Assignments can be made so that the proportion between the change of the measu...

Page 21: ...by de energized relay P14 Relay parameter Setpoint value FACTORY DEFAULT 0 P15 Relay parameter Setpoint value FACTORY DEFAULT 0 Relay set points are to be programmed for two point control Values shou...

Page 22: ...able Not recommended 5 60 Recommended Applicable 6 100 Recommended Recommended 7 300 Recommended Recommended 8 600 Recommended Recommended 9 1000 Applicable Applicable P23 a Angle of repose repose for...

Page 23: ...ng window Basic echo selection will be done by the Quest software automatically This parameter only influences the echo selection within the measuring window a Echo in the window to be selected Remark...

Page 24: ...he displayed value on the EView and the analogue output value shifts towards the full tank silo state with the level elevation rate filling speed set in P26 3 Immediate In case of an echo loss no Echo...

Page 25: ...lection by moving the Measuring Window FACTORY DEFAULT 0 A so called measuring window is formed around the echo signal See scheme on the next page The distance of the target will be calculated from th...

Page 26: ...he value a defining the shape of the container must be set first b0 Standing cylindrical tank shape value of b as below bottom P40 b P41 01 Standing cylindrical tank silo with conical bottom P41 P43 P...

Page 27: ...5 4 6 Linearisation P47 a Linearization FACTORY DEFAULT 0 An output signal of any characteristic can be assigned to the level values measured by the device The characteristic can be specified with a m...

Page 28: ...Column L cannot contain the same values If the table contains less than 32 data pairs the row after the last valuable data pair in column L must be 0 If the above conditions are not met and P47 1 tabl...

Page 29: ...the selected echo time ms P74 Signal to Noise Ratio RATIO MEASUREMENT CONDITIONS Over 70 Excellent Between 70 and 50 Good Under 50 Unreliable P75 Blocking Distance This parameter gives information ab...

Page 30: ...on Linearisation Err 14 Linearisation table error the r i values are not monotone increasing See the Section Linearisation Err 15 Linearisation table error measured Level is higher than the last Volum...

Page 31: ...P10 20 Value assigned to 4 mA current output P38 P11 20 Value assigned to 20 mA current output P39 P12 20 Error indication by the current output P40 26 Tank silo shape P13 21 Relay functions P41 27 T...

Page 32: ...65 29 Maximum temperature of the transducer P66 29 Minimum temperature of the transducer P88 P67 P89 P68 P90 P69 P91 P70 29 Number of Echoes Echo Map P92 P71 29 Distance of the of Measuring Window P93...

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