NIVELCO EasyTREK SCD-300 Series Assembly instructions

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INSTALLATION
and
PROGRAMMING MANUAL
1st edition
HiTECH/NIVELCO Process Control Co.
301Oxford Valley Road, Bldg 505, Yardley, PA 19067 Tel: [phone] ♦Fax: [phone]
E-mail:[email protected] ♦www.hitechtech.com

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PRINCIPLES OF ULTRASONIC LEVEL MEASUREMENT
Max. measuring distance of the device (X )
DEFAULT value of: P04=X
Max. measuring range of the device Min. meas. distance (Xm)
DEFAULT value of: P05=Xm
Max. measuring distance of the
application (H)
Programmed value of: P04=H
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
Angle of repose:
DIST=distance (measured)
Displayable range
M
M

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CONTENTS
1. INTRODUCTION .............................................................................5
2. TECHNICAL 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.SAFETY REGULATIONS OF THE EX APPROVED UNITS....................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. PARAMETER TABLE................................................................... 34

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Thank you for choosing a HiTECH/ 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 HiTECH/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 HiTECH/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.
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
5m 0,7 m
10m 1,2 m
20m 2m
30m 3m
40m 3,8 m
50m 4,7 m
X
Diameters corresponding to the
5° beam angle
X = 16,5 ft. D = 28.0”
X = 33.0 ft. D = 4.0 ft.
X = 65.0 ft. D = 7.0 ft.
X = 99.0 ft. D = 9.9 ft.
X = 131.0 ft. D = 13.0 ft.
X = 197.0 ft. D = 15.0 ft.
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 PE-10 or a PR-1type
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. TECHNICAL DATA
2.1.GENERAL DATA
Type EasyTREK SCD– 3 - 4 EasyTREK SCD– 3 - 8 Ex*
Housing material PP+ Aluminium Aluminium
Total beam angle (-3dB) 5°
Process temperature -22ºF (–30°C) ... + 140ºF (60°C) - 4ºF (–20°C) ... +140ºF (60°C)
Process pressure (absolute) 0,07 ... 0,11 MPa (0,7 … 1,1 bar) 10 PSI – 16 PSI
Power supply / consumption 11,4 … 40 V DC / 3,6 W, 11,4 … 28 V AC / 4 VA
Analogue 4 … 20 mA, Rtmax = 600 ohm, Galvanic isolation; protection against surge transients
Digital communication HART
Output Relay SPST ; 48 V AC / 5A; A12
Accuracy ±( 0,2% of the measured distance + 0,1% of the range)
Resolution 0.39” (10mm)
Damping 3 … 1000 s
Electric connection 6 x 2,5 mm2∅7,5 mm shielded cable ; standard length 9.8 ft (3 m) ; (to order up to 98 ft. (30m)
Electric protection Class III
Ingress protection IP65
Ex marking* n.a. ATEX II 1D IP 65 T 130 °C
*Pending
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** (XM) 49 ft. (15 m) 98 FT. (30 m) 197’ (60 m)
Minimum measuring distance** (Xm) 1.6 ft. (0,5 m) 2 ft. (0,6 m) 3.28 FT. (1 m)
Ultrasound frequency 40 kHz 30 kHz 15 kHz
Sensor face PVC foam
Mass 7.7 lbs. (~ 3.5 kg) 7.7 lbs. (~ 3.5 kg) 14.0 lbs. (~ 6.5 kg)
*Under optimal circumstances of reflection and stabilised sensor temperature

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2.3.ACCESSORIES
•Installation and Programming Manual
•Guaranty Certificate
•Manufacturer’s Declaration
•EView Light configuration software and description on CD
ACCESSORIES TO BE ORDERED
•Split flange (order code: SFA – 35)
•EView configuration software CD
•HART modem
2.4.ORDER CODES
Eas
y
TREK S C D – 3 – *
Range Code Mounting Code Output / Ex Code
197 ft (60 m) 1 1" BSP 0 4 … 20 mA+HART+Relay 4
99 ft (30 m) 3 Aiming device J 4 … 20 mA+HART+Relay/Ex 8
49 ft. (15 m) 4 RS 485+ Relay B
RS 485+ Relay / Ex F
*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-_ Ex SCD-340-_ Ex
SCD-31J-_ SCD-31J-_ Ex SCD-33J-_ SCD-33J-_ Ex
SCD-34J-_ SCD-34J-_ Ex
Ball-joint Housing
(view from above)

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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. The same way no disturbing objects such as ladder, grid, thermometer, etc
should intrude into the beam cone. Heavy air movement can make measurement more difficult or even unable.
Device should be protected against direct sunshine no to let its temperature increase into excessive range.
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.
Suggested location (view from above)
40m 3,8 m
50m 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 housing of the
electronics. 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.