NIVELCO EchoTREK S-300 Manuale utente

USER’S MANUAL

Programming of the units is to perform according to the

3d edition of the INSTALLATION and PROGRAMMING MANUAL

PRINCIPLES ULTRASONIC LEVEL MEASUREMENT

Programmed measurement range

Close end blocking (XB)

progr. value of P05=XB>Xm

LEV=( level calculated H-DIST)

VOL= volume (calculated from LEV)

DEFAULT value of: P06=0

Far end blocking

DIST

ngle of repose

DIST=distance (measured)

Displayable range

application(H)

Programmed value of P04=H

Max. measuring distance of the device (X )

DEFAULT value of P04=X

Min. meas. distance (Xm)

DEFAULT value of P05=Xm

Max. measuring range of the device

Thank you for choosing a NIVELCO instrument.

We are sure that you will be satisfied throughout its use.

1. APPLICATION

APPLICATION

The EchoTREK SBD/STD-300 series compact ultrasonic transmitters from NIVELCO are designed to measure the level of the most free flowing solids (powders

and granules).

This intelligent microprocessor based smart level transmitter offers scaleable 4-20 mA output, programmable relay and HART communication.

Level measurement technology based on the non-contacting ultrasonic principle is especially suited for applications where, for any reason, no physical contact

can be established to the surface of the material to be measured and/or moving parts are to be avoided to eliminate mechanical wear-out.

PRINCIPLE OF OPERATION

The ultrasonic 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 emits an ultrasonic pulse train and receives the echoes reflected. The

intelligent electronic device processes the received signal by selecting the echo

reflected by the surface and calculates from the time of flight the distance

between the sensor and the surface which constitutes the basis of all output

signals of the EchoTREK!

5 m 0,7 m

10 m 1,2 m

20 m 2 m

30 m 3 m

40 m 3,8 m

50 m 4,7 m

Diameters corresponding.to

5° beam angle

A Total beam angle of 5°at –3 dB is a feature of all Nivelco’s ultrasonic sensors designed for the level measurement of free flowing solids.

This uniquely narrow beam angle ensures reliable measurement in narrow silos with uneven side walls or sometimes even in the presence of dusting.

Furthermore, as a result of the narrow beam angle – the emitted ultrasonic signals have an outstanding focusing – a sufficient signal penetration through dust is

ensured.

Minimum measuring distance (Xm): (also known as the “Dead Band”) is a feature common to all ultrasonic level meters. This is a short range in front of the

sensor within which the ultrasonic device can not measure.

Maximum measuring distance (XM): The longest range under ideal condition within which the device can measure. No measurement is possible beyond this

distance.

2. TECHNICAL DATA

GENERAL DATA

Product name EchoTREK STD/SBD-300 series

Sensor material Closed cell Polyurethane foam sensor face (PUR), Polypropylene sensor housing, Aluminium mounting accessories

Housing material Powder paint coated Aluminium

Process temperature -30°C ... +75°C

Ambient temperature -30°C ... +60°C, with SAP-100 programming module -25°C ... +60°C

Pressure (Absolute.) 0.7 ... 1.1 bar (0,07 ... 0,11 MPa) and ± 0.1 bar (0.01 MPa) difference between outside and internal silo space

Mechanical protection Sensor: IP65 (NEMA 5), Housing: IP67 (NEMA 6)

Power supply / Consumption Version I: 120 … 375 V DC / 5,5 W 85 ... 255 V AC (50/60 Hz) / 6.8 VA ;

Version II: 11.4 ... 40 V DC / 4.1 W 11.4 ... 28 V AC (50/60 Hz) / 4.6 VA

Accuracy* ±(0.2% of the measured distance plus 0.1% of the maximum measuring distance of the device)

Resolution 10 mm

Analogue: 4 … 20 mA, max. 600 Ohm, galvanically isolated, overvoltage protection

Relay: SPDT, 250 V AC / 3 A, AC1

Display (SAP-100): 6 digits, icons and bargraph, Custom LCD

Outputs

Digital communication: HART, MODBUS

Electrical protection Class I.

Electrical connections 2 x M20x1.5 and 2 x ½” NPT for wire cross sections: 0.5 ... 2.5 mm2

* Under optimal circumstances of reflection and stabilised sensor temperature.

TYPE SPECIFIC DATA

Type STD-34J SBD-34J STD-33J SBD-33J STD-31J SBD-31J

Maximum measuring distance* (XM) m/feet 15/49 30/98 60/196

Minimum measuring distance* (Xm) m/feet 0.6/2 0.6/2 1/3,33

Total beam angle (at -3dB) 5°

Measuring frequency 30 kHz 15 kHz

Weight 7 kg 10 kg

* Measured from the sensor face

SAP-100 PROGRAMMING AND DISPLAY MODULE

Field indication 6 digits, icons and bargraph, Custom LCD

Ambient temperature -25°C … +60°C

Housing material PBT fibre-glass reinforced plastic, flame-retardant (DuPont)

2.1 ACCESSORIES

•User’s Manual

•Installation and Programming Manual 3d edition

•Guarantee Card

•EView Light configuration software and description on CD (for types of SD- 3-3/4 only)

•2 pcs M20x1.5 cable gland

ACCESSORIES TO BE ORDERED

•Split flange (order code: SFA – 35)

•SAP-100 programming module

•EView configuration software CD

2.2 ORDER CODES

EchoTRE

SD–3 J–

Typel Code Range Code Power supply / Output Code

Transmitter T60 m 1 Version I. 120 … 255 V DC Stand. Ex

Transmitter + Local Indicator B30 m 3 85 … 255 V AC

15 m 44 … 20 mA + Relay 15

4 … 20 mA + Relay + HART 37

RS 485 (MODBUS protocol) + Relay AE

Version II. 11,4 … 40 V DC

11,4 … 28 V AC

4 … 20 mA + Relay 26

4 … 20 mA + Relay + HART 48

RS 485 (MODBUS protocol) + Relay BF

2.3 DIMENSIONS

Ball-joint housing

(view from above)

SD-33J-SD-33X-

SD-34J-SD-34X-SD-31J SD-31X-

125

∅

max.814

Ball-joint

housing

~824

ø148

max.20°

max.855

~840

ø293

max.20°

Ball-joint

housing

3. INSTALLATION

POSITIONING

Selecting optimal location for the transmitter various considerations should be made.

If the measured material is granule (material size > 5 mm) and the tank roof is dome shaped or

conical, do not install the transmitter in the centre of the tank/silo. In general the transmitter can

be installed on the radius r= (0,3 … 0,5) R.

Avoid that the 5° conical beam angle of the transmitter contact the tank/silo wall. In case the

transmitter is mounted close to the wall, it should be tilted (See section “Aiming”). Protect the

transmitter electronics from overheating due to direct sunshine..

Sunshade

GRAVITY FILLING

Select a location that is as

far away from the filling

point(s) as possible.

PNEUMATIC FILLING

Select a location where the speed of the

in-flowing material is the smallest.

Suggested location (view from above)

40 m 3,8 m

50 m 4,7 m

MOUNTING (See illustration for mounting on page 9)

The EchoTREK consists of a sensor that is attached to the aiming arm (a pipe with a ball-joint housing incorporating a ball joint) that is attached to the housing of the

electronics. It is recommended to mount the transmitter on the roof of the tank/silo using a flange (See drawing). The Ball-joint housing has a screw-hole diameter of

125 mm for fixing it. For easy installation we recommend to use our special flange with a split insertion, available with four sizes of DN125/150/200/300 (to be

ordered separately). Removing the split insertion, the flange is to be put around the aiming arm and the ball-joint housing is to be fixed to the split flange. It is

essential to use the washers and the bolts (4 pcs each) delovered with the split flange. The ball-joint will be pressed to the housing by a spring allowing

adjustment/aiming. The 4 pcs of M12 bolts has only be tightened after completing the adjustment/aiming.

Mounting EchoTREK versions S-33J and S-34J

1. Check the split flange for matching the bore-holes with that of the counter-flange on the silo

2. Remove the split insertion from the flange and put the flange around the aiming arm between the sensor and the Alu-base.

3. Slide the split insertion back to its place and screw the ball-joint housing to the flange with the 4 pcs M 12 bolts to such an extent that will allow free

movement of the aiming arm through and tilting by the ball joint for the aiming process.

4. Pass the sensor through the opening cut on the roof and fasten the flange to its place.

5. Perform the aiming (See section “Aiming” below).

6. For fixing the position of the aiming arm tighten the 4 pcs M 12 bolts of the ball-joint housing (Max. 3.5 Nm).

Mounting EchoTREK SD -31versions, with silo/tank roof opening of ∅300 mm

The procedure is the same as above but the flange dia is of DN300.

Mounting EchoTREK SD -31version with silo/tank roof opening less than ∅300 mm and the silo space is accessible from inside

1. Check the split flange for matching the bore-holes with that of the bolt places or counter-flange on the silo

2. Place the sealing below the flange (if necessary)

3. Push the unit out of the silo (upwards) (See con the next page)

4. Is the Alu-base with the ball-joint over the counter-flange the special flange has to be placed around the aiming arm (See don the next page)

5. Put the split flange on the counter-flange and lower the ball-joint housing on it

6. Slide the insertion to its place (Seeeon the next page)

7. Screw in the 4 pcs of M12 bolts (See fon the next page) to such an extent that will allow free aiming

8. Fasten the EhoTREK (with the split flange) to the counter-flange or to the roof of the silo/tank.

9. After completing aiming tighten the 4 pcs 12M bolts (Max. 3.5 Nm).

If the entire tilting range of the aiming arm is required, the thickness of the roof can not exceed as specified on the above drawing.

The EchoTREK can also be mounted on existing (manhole) covers, access lids or for instance on a steel structure lowered into a larger (ex.: 0.5 x 0.5 m) opening on

the roof. This solution is to be used with roof stronger than 350 …380 mm.

Diameter of the opening

Thickness of the roof

160 mm 110 mm

190 mm 150 mm

230 mm 200 mm

300 mm 280 mm

340 mm 300 mm

Illustration for mounting

AIMING OF THE ECHOTREK

To reduce week signal reflection from the material surface caused by an angle of repose building due to the filling and/or emptying process, it is recommended to tilt

the sensor by the aiming arm of the transmitter. Aiming is best carried out during operation, when the tank/silo is almost empty. In most cases, the sensor should be

aimed towards the middle of the tank/silo bottom by aiming at the silo outlet. In applications where repose is not present or with tall and narrow silos (diameter/height

 5) aiming is not critical: the sensor should face straight downwards. Aiming is also aided by the informational parameters P70 …P 75 (see Programming Manual).

Aiming should also be tested with full silo, since due to the great angle of repose the echo

might be weak despite of the fact that level is near to the sensor. In such cases a reasonable

compromise of aiming should be achieved that provide acceptable echo in every state of the

filling.

4. ELECTRICAL CONNECTIONS

•To access the electric connection point, unscrew the bolt on the side of the

electronics housing. Use cable with a wire cross- section of 0.5 … 2.5 mm2.

•Electric connections may be carried out by using a single or two cables. Wires

in different groups (A, B, C; shown below) must not be led in the same cable.

Group A Group B Group C

4 … 20 mA.

Low voltage power supply Selv voltage power supply

Low voltage for the relay Selv voltage power or

logic signal for the relay

RS485

(shielded twisted pair)

•Devices must be grounded either at the internal or external grounding screw

terminals depending on the way of cabling.

•DC powered devices can be 3-wire connected. In this case the terminals

”1” and ”6” must be interconnected.

In this case the galvanic isolation will not be provided!

•After performing the electric connections, check for correct sealing and close

the housing.

NPT1/2" NPT1/2"

356 4 2 1

Place of M20x1.5

1234

657

L+

L-

Earthing screw

Power supply

(+)

output

(A)

(B)

RS 485

4...20 mA or

543

Relay

output

()

Wiring diagramme

Space for the wiring, for better overview without upper part

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