NIVELCO EasyTREK SCD-300 Series Assembly instructions

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Manufacturer:
H-1043 Budapest, Dugonics u. 11.
Phone: [phone] Fax: [phone]
NIVELCO Process Control Co.
E-mail: [email protected] www.nivelco.com
EasyTREK
SCD-300 integrated ultrasonic level transmitter
series for free flowing solids

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PRINCIPLES OF ULTRASONIC LEVEL MEASUREMENT
Max. measuring distance of the device (X )
DEFAULT va ue of: P04=X
Max. measuring range of the device Min. meas. distance (Xm)
DEFAULT va ue of: P05=Xm
Max. measuring distance of the
app ication (H)
Programmed va ue of: P04=H
Programmed measurement range
C ose end b ocking (XB)
Progr. va ue of: P05=XB>Xm
LEV= level calculated H-DIST)(
VOL= volume (calculated from LEV)
DEFAULT va ue of: P06=0 Far end b ocking
DIST
Angle of repo e:
DIST=di tance (mea ured)
Displayable range
M
M

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CONTENTS
1. INTRODUCTION................................................................................... 5
2. TECHICAL DATA ................................................................................. 7
2.1. GENERAL DATA........................................................................................... 7
2.2. SPECIAL DATA ............................................................................................ 7
2.3. ACCESSORIES............................................................................................. 8
2.4. ORDER CODES ............................................................................................ 8
2.5. DIMENSIONS................................................................................................ 9
3. INSTALLATION .................................................................................. 10
4. WIRING ............................................................................................... 12
4.1. WIRING CONDITIONS.................................................................................. 12
4.2. CONNECTION CABLE EXTENSION ............................................................... 12
5. PUTTING INTO OPERATION, ADJUSTING, PROGRAMMING ....... 14
5.1. PUTTING INTO OPERATION ......................................................................... 14
5.1.1. Status indication signals in measuring mode............................ 15
5.2. SPECIAL CONDITIONS FOR SAFE USE ......................................................... 15
5.3. PROGRAMMING ......................................................................................... 15
5.4. PARAMETERS –DESCRIPTION AND PROGRAMMING ..................................... 16
5.4.1. Measurement Configuration...................................................... 16
5.4.2. Current value............................................................................. 21
5.4.3. Relay output .............................................................................. 22
5.4.4. Measurement optimalization ..................................................... 23
5.4.5. Volume measurement ............................................................... 28
5.4.6. Linearisation.............................................................................. 29
5.4.7. Informational parameters .......................................................... 30
5.4.8. Test parameters ........................................................................ 31
5.4.9. Error codes................................................................................ 32
6. MAINTENANCE, REPAIR................................................................... 33
7. STORAGE CONDITIONS ...................................................................33
8. WARRANTY........................................................................................ 33
9. PARAMETER TABLE ......................................................................... 34

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Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use.
1. INTRODUCTION
APPLICATION
The EasyTREK SCD-300 series compact ultrasonic transmitters from NIVELCO are designed to measure the level of free flowing solids, granules and powders.
The unit does not touch the material to be measured and does not include any moving parts. Thus, it is not exposed to mechanical loading, no abrasive effect is
expected and regular maintenance is not required.
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. Modifying of the factory default settings of the level transmitter is possible only via HART communication.
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 signals by selecting the
echoes reflected from the surface and calculates the distance from the time o
f
flight between the sensor and the surface of the medium. This is the basis for all
other output signals (level or volume) of the EasyTREK! For measuring the level o
f
the medium the greatest distance of the application (H) has to be programmed.
rr
D
XD
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
X
Diameters corresponding to the
5° beam angle
Minimum measuring distance (Xm) is the construction defined smallest distance within which measurement is not possible (Dead Band; see 5.3. Parameters P05).
In special applications this range should be extended with programming (close end blocking)
Maximum measuring distance (XM): is the construction defined greatest distance, which can be measured by the unit under ideal conditions. No measurement is
possible over this distance i.e. maximum distance of the application H must not be greater than XM. Under unfavourable circumstances such as bad reflection or
heavy dusting of the material the measuring capability may be reduced up to the half of the unit’s best performance.

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THE FOLLOWING TYPES OF APPLICATIONS ARE POSSIBLE DEPENDING ON THE COMMUNICATION AND WHAT THE OUTPUT SIGNAL IS USED FOR:
1. Using the unit as a three - or four -wire current transmitter.
Normally, we use the analogue (4…20 mA) output signal of the EasyTREK. The application parameters of the device are set through HART communication at
installation (right after installation or in a laboratory, prior to installation). In this case the short address of the device should stay the factory default: P19 = 0.
2. Using both, current transmission and digital (HART) signal transfer in single transmitter systems.
Digital signal transfer is also used beside the standard utilisation of the output current of the EasyTREK. In this case, there can be one or more devices in the
current loop that use analogue signals (with their total resistance being Rt= 250 … 600 Ω) and one HART master device.
The short address of the EasyTREK should stay the factory default: P19 = 0. This application can be achieved with using a MultiCONT unit as the HART master
which ensures the power supply of the EasyTREK too.
3. Simultaneous control of several EasyTREK transmitters with the help of a MultiCONT.
In this case all of the 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 settings are arbitrary.
The short addresses of the units are P19 = 1 ... 15. All types of setting and programming tasks can be done through a MultiCONT.

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2. TECHICAL DATA
2.1. GENERAL DATA
Type SCD-3-4 SCD-3-8 Ex
Transducer material Closed cell Polyurethane foam sensor face (PUR)
PP and Aluminum transducer housing and fitting
Closed cell Polyurethane foam sensor face (PUR)
Aluminum transducer housing and fitting
Total beam angle (-3dB) ∼5°
Process temperature -30 °C … + 60 °C -30 °C … +60 °C
Max. surface temperature - 130 °C
Process pressure (absolute) 0.07 ... 0.11 MPa (0.7 … 1.1 bar) Pabsolute and ± 0.01 MPa (0.1 bar) difference between ambient and tank pressure
Power supply / consumption 11.4 … 40 V DC / 4.1 W or 11.4 … 28 V AC (50/60Hz) / 4.6 VA
Analogue output 4 – 20 mA Rtmax= 600 Ω, galvanic isolation, protection against surge transients
Error indication by the current output if no echo: continuous 3.6 mA or 22 mA (selectable with programming)
Digital communication 4-20 mA + HART
output Relay (SPST)
Programmable functions: hysteresis control or error indication
Electronic solid state switch (SPST)
Programmable functions: hysteresis control or error indication
Switch
rating 48V AC / 5 A 48V AC 50V DC / 1 A
Accuracy* ±(0.2 % of the measured distance + 0.1% of the measurement range)
Resolution of the
distance and level measurement 10 mm
Damping time 3 ... 1000 s (selectable with programming) Default value: 300 s
Electrical connection 7x0.5 mm2shielded cable ∅7.5 mm standard length: 3 m (available to order up to 30 m)
Electrical protection Class III
Ingress protection IP65
Ex marking – II 1 D Ex ma ta IIIC T85°C…T130 °C Da
*Under optimal circumstances of reflection and stabilised sensor temperature
2.2. SPECIAL DATA
Type SCD-34-4 SCD-34-8 Ex SCD-33-4 SCD-33-8 Ex SCD-31-4 SCD-31-8 Ex
Maximum measuring distance XM15 m 30 m 60 m
Minimum measuring distance Xm0.6 m 0.6 m 1 m
Ultrasound frequency 40 kHz 30 kHz 15 kHz
Mass ∼3.5 kg ∼3.5 kg ∼6.5 kg

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2.3. ACCESSORIES
• Installation and Programming Manual
• Warranty Card
• Declaration of Conformity
• EView configuration software and description on CD
ACCESSORIES TO BE ORDERED
• Split flange (order code: SFA – 35)
2.4. ORDER CODES
Eas
y
TREK S C D – 3 – *
RANGE CODE MOUNTING CODE OUTPUT /EXCODE
60 m 1 1” BSP + nut 0 4 … 20 mA + HART+ Relay 4
30 m 3 1” BSP + fast connecting gland F
15 m 4 Aiming device J
4 … 20 mA + HART+
electronic switch / Dust-Ex ma ta 8
200 mm bracket K
500 mm bracket L
700 mm bracket M
*The order code of an Ex version should end in “Ex”

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2.5. DIMENSIONS
SCD-310- SCD-310-Ex SCD-330-SCD-340-SCD-330-8 Ex SCD-340-8 Ex
Ø37
Ø292
~118
15.5
1" BSP
~118
Ø294
1" BSP
Ø37
15.5
106
Ø148
1" BSP
15.5
Ø37
1" BSP
106
Ø146
15.5
Ø37
SCD-31J-SCD-31J-8 Ex SCD-33J-
SCD-34J-
SCD-33J-8 Ex
SCD-34J-8 Ex
Ball-joint Housing
(view from above)
Ø292
~750
max.20°
~765
Ø294
~750
max.20°
~765
Ø148
~740
max.20°
~725
Ø148
~740
~725
max.20°

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3. INSTALLATION
PLACEMENT
To find the ideal position for the location of the EasyTREK level transmitter various considerations should be
made.The transmitter should not be installed in the centre of the tank/silo when the tank roof is dome shaped
or conical. The ideal position for the EasyTREK is on the r = (0.3 … 0.5) R (in case of cylindrical tank).
Avoid that the 5° conical beam angle of the transmitter contact the tank/silo wall. This case the transmitter is
mounted too close to the wall, therefore it should be tilted (See section “Aiming”).
To avoid overheating the instrument should be protected against direct sunshine.
r
R
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.
Ex type units are not allowed to be installed in the
dust path of the pneumatic filling!
Suggested location (view from above)
40 m 3,8 m
50 m 4,7 m
MOUNTING (see illustration of mounting options on the next page)
The EasyTREK 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 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 housing has a screw-hole
diameter of 125 mm for fixing it. For easy installation we recommend using our special flange with a split insertion, available in 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) delivered 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 have to be tightened only after completing the adjustments/aiming. The maximum torque for tightening the bolts is 3.5 Nm.