Echotel
®
Model 335
Installation and Operating Manual
Non-Contact
Ultrasonic Transmitter
For Level, Volume,
and Open Channel Flow
Measurement
Read this Manual Before Installing
This manual provides information on the Echotel Model
335 Non-Contact Ultrasonic Transmitter. It is important
that all instructions are read carefully and followed in
sequence. Detailed instructions are included in the
Installation section of this manual.
Conventions Used in this Manual
Certain conventions are used in this manual to convey
specific types of information. General technical material,
support data, and safety information are presented in
narrative form. The following styles are used for notes,
cautions, and warnings.
Notes
Notes contain information that augments or clarifies
an operating step. Notes do not normally contain
actions. They follow the procedural steps to which
they refer.
Cautions
Cautions alert the technician to special conditions that
could injure personnel, damage equipment, or reduce
a component’s mechanical integrity. Cautions are also
used to alert the technician to unsafe practices or the
need for special protective equipment or specific mate-
rials. In this manual, a caution box indicates a poten-
tially hazardous situation which, if not avoided, may
result in minor or moderate injury.
Warnings
Warnings identify potentially dangerous situations or
serious hazards. In this manual, a warning indicates an
imminently hazardous situation which, if not avoided,
could result in serious injury or death.
Safety Messages
Follow all standard industry procedures for servicing elec-
trical equipment when working with or around high
voltage. Always shut off the power supply before touching
any components.
WARNING!
Explosion hazard. Do not connect or
disconnect equipment unless power has been switched off
or the area is known to be non-hazardous.
Low Voltage Directive
For use in Installation Category II, Pollution Degree 2.
If equipment is used in a manner not specified by the
manufacturer, protection provided by the equipment
may be impaired.
Notice of Trademark, Copyright, and Limitations
Magnetrol & Magnetrol logotype, and Echotel are regis-
tered tradenames of Magnetrol International,
Incorporated.
Copyright © 2011 Magnetrol International.
All rights reserved.
Performance specifications are effective with date of
issue and are subject to change without notice.
Magnetrol reserves the right to make changes to the
product described in this manual at any time without
notice. Magnetrol makes no warranty with respect to the
accuracy of the information in this manual.
Warranty
All Magnetrol electronic level and flow controls are war-
ranted free of defects in materials or workmanship for one
full year from the date of original factory shipment.
If returned within the warranty period; and, upon factory
inspection of the control, the cause of the claim is deter-
mined to be covered under the warranty; then, Magnetrol
will repair or replace the control at no cost to the pur-
chaser (or owner) other than transportation.
Magnetrol shall not be liable for misapplication, labor
claims, direct or consequential damage or expense arising
from the installation or use of equipment. There are no
other warranties expressed or implied, except special writ-
ten warranties covering some Magnetrol products.
Quality Assurance
The quality assurance system in place at Magnetrol guar-
antees the highest level of quality throughout the compa-
ny. Magnetrol is committed to providing full customer
satisfaction both in quality products and quality service.
The Magnetrol Corporate quality
assurance system is registered to ISO
9001 affirming its commitment to
known international quality standards
providing the strongest assurance of
product/service quality available.
51-637 Echotel Model 335 Ultrasonic Transmitter
Echotel Model 335
Non-Contact Ultrasonic Transmitters
Table of Contents
1.0 Installation
1.1 Unpacking ...............................................................4
1.2 Mounting and Application Considerations ..............4
1.2.1 Position........................................................4
1.2.2 Orientation ..................................................4
1.2.3 Temperature.................................................4
1.2.4 Obstructions ................................................5
1.2.5 Standpipes....................................................5
1.2.6 Foam............................................................5
1.2.7 Vapors..........................................................5
1.2.8 Wind ...........................................................5
1.2.9 Open Channel Flow Measurement ..............5
1.3 Electrostatic Discharge (ESD) Handling Procedure..6
1.4 Wiring .....................................................................6
1.5 Configuration ..........................................................7
1.5.1 LCD Module ...............................................7
1.5.2
QuickSet Configuration
.................................9
1.5.3 Basic Functions ..........................................10
1.5.4 Setting
QuickSet Configuration
Parameters .10
1.6 Complete Configuration........................................12
1.6.1 Measurement Configuration Parameters ....13
1.6.2 mA Current Output Settings .....................19
1.6.3 SPDT Relay Configuration........................20
1.6.4 Performance Enhancement ........................21
1.6.5 Volume Configuration ...............................26
1.6.6 Open Channel Flow Configuration ...........27
1.6.7 Linearization Table.....................................31
1.6.8 Information Parameters..............................32
1.6.9 Open Channel Flow Head and Totalizers ..34
1.6.10 Output Test Parameters..............................34
1.6.11 Simulation Mode .......................................35
1.6.12 Additional Software Parameters..................36
1.7 Diagnostic Error Codes..........................................37
2.0 Reference Information
2.1 Description ............................................................38
2.2 Theory of Operation..............................................38
2.3 Performance ...........................................................38
2.4 Measurement Range Calculations ..........................39
2.5 Velocity of Sound in Gases other than Air .............40
2.6 Specifications .........................................................40
2.6.1 Performance ................................................40
2.6.2 Transmitter..................................................41
2.6.3 Transducer ..................................................41
2.6.4 Physical .......................................................42
2.7 Model Number ......................................................42
2.8 Configuration Parameter Worksheet ......................43
51-637 Echotel Model 335 Ultrasonic Transmitter
1.0
Installation
Caution:
If equipment is used in a manner not specified by manufac-
turer, protection provided by equipment may be impaired.
1.1
Unpacking
Unpack the instrument carefully. Inspect all units for
damage. Report any concealed damage to carrier within
24 hours. Check the contents of the packing slip and
purchase order. Check and record the serial number for
future reference when ordering parts.
Caution:
Do not discard the shipping container until all parts are
checked.
1.2
Mounting and Application Considerations
Caution:
Unit should only be hand-tightened (4 –12 ft-lbs) into the
process connection. The wrench flats should only be used
when removing the unit. Overtightening will cause trans-
ducer errors and will void the warranty.
There are several application considerations that should be
evaluated prior to installing a non-contact ultrasonic trans-
mitter. The next few pages should be read thoroughly to
ensure that the Model 335 will perform as expected in
the given application.
Section 2.4, Measurement Range
Calculations,
provides measurement range calculations that
should be used to determine the maximum potential range
in difficult applications.
1.2.1 Position
The optimum mounting position of the Model 335 is
between
1
⁄
2
of the radius and
2
⁄
3
diameter of the (cylindrical)
tank. This will position the unit to minimize any interfer-
ence that the 7° beam (3.5° half angle) has with the tank
walls or any agitator blades that exist in the tank. Refer to
beam angle figure on page 38.
1.2.2 Orientation
The face of the transducer must be parallel to the liquid
surface within ±2° to 3°.
1.2.3 Temperature
Sunshade
Ensure that the transmitter will be protected against
overheating by direct sunshine. When the unit will be
subjected to severe direct sun, the use of a sunshade is
recommended.
4
51-637 Echotel Model 335 Ultrasonic Transmitter
1.2.4 Obstructions
Ensure that no obstacles (e.g., fill pipes, ladders, bracing
members, thermometers, etc.) protrude into the ultrasonic
beam. Although one fixed object in the tank can be
blocked out by appropriate programming, it is advised to
avoid these obstructions.
1.2.5 Standpipes
In applications where the material level may come into the
deadband, the transducer must be mounted in a standpipe.
Refer to
Section 1.6.1, Measurement Configuration
Parameters, P05: Deadband
for deadband value. The inner
rim of the standpipe must be smooth and free of burrs.
The minimum diameter for a given length of standpipe is
shown at left.
1.2.6 Foam
Diameter
Standpipe Length
6" (150 mm)
8" (200 mm)
10" (250 mm)
12" (300 mm)
14" (350 mm)
Minimum Diameter
3" (75 mm)
3" (75 mm)
4" (100 mm)
5" (125 mm)
5" (125 mm)
Foaming of the liquid surface may render ultrasonic level
measurement impossible. If possible, a mounting location
should be found, where foaming is at a minimum.
Another alternative is to install the transducer in a stilling
well that extends below the lowest level to be measured in
the tank.
1.2.7 Vapors
Length
Closed tanks that contain chemicals or other liquids that
create vapors, may severely reduce the maximum measur-
ing range. Refer to the
Section 2.4, Measurement Range
Calculations
for more information.
1.2.8 Wind
Intensive moving of the air in the vicinity of the ultrasonic
beam is to be avoided. A strong wind may not allow the
return echo to be received by the ultrasonic transducer.
1.2.9 Open channel flow measurement
For the best accuracy, install the transducer as close as pos-
sible above the expected maximum water level in the flume
or weir.
Install the Model 335 upstream of the flume throat or weir
crest in the location defined by the manufacturer of the
primary measuring device. The unit should also be aligned
with the longitudinal axis of the flume or weir.
51-637 Echotel Model 335 Ultrasonic Transmitter
5
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