Echotel 350-351 Transmitter Instruction Manual 51-616

Echotel®
Model 350/351
Installation and Operating Manual
Ultrasonic
Non-Contact
Level
Transmitter
Read this Manual Before Installing
This manual provides information on the Echotel Model
350/351 Ultrasonic Non-Contact Level 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 materials. In this manual, a caution box indicates a potentially 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
The Echotel Model 350/351 is designed for use in
Category II, Pollution Degree 2 installations. Follow all
standard industry procedures for servicing electrical and
computer equipment when working with or around high
voltage. Always shut off the power supply before touching
any components. Although high voltage is not present in
this system, it may be present in other systems.
Electrical components are sensitive to electrostatic
discharge. To prevent equipment damage, observe
safety procedures when working with electrostatic
sensitive components.
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,
and (2) This device must accept any interference
received, including interference that may cause undesired operation.
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 Category II installations. If equipment is used
in a manner not specified by manufacturer, protection
provided by equipment may be impaired.
Notice of Trademark, Copyright, and Limitations
Echotel is a registered tradename of Magnetrol
International.
Copyright © 2004 Magnetrol International,
Incorporated. All rights reserved.
Magnetrol/STI reserves the right to make changes to the
product described in this manual at any time without
notice. Magnetrol/STI makes no warranty with respect to
the accuracy of the information in this manual.
Warranty
All Magnetrol/STI 350/351 Ultrasonic Non-Contact
Level Transmitters are warranted 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
determined to be covered under the warranty; then,
Magnetrol/STI will repair or replace the control at
no cost to the purchaser (or owner) other than
transportation.
Magnetrol/STI 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 written warranties covering some
Magnetrol/STI products.
Quality Assurance
The quality assurance system in place at Magnetrol/STI
guarantees the highest level of quality throughout the
company. Magnetrol/STI is committed to providing
full customer satisfaction both in quality products and
quality service.
Magnetrol’s 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.
Echotel Model 350/351 Ultrasonic
Non-Contact Level Transmitter
Table of Contents
1.0 Installation
1.1 Unpacking ..............................................................1
1.2 Mounting ...............................................................1
1.2.1 Unit Mounting Location .............................1
1.2.2 General Unit Mounting Requirements ........2
1.2.3 Remote Transmitter Mounting Procedure ....2
1.2.4 Sensor Mounting Procedure.........................3
1.2.4.1 Remote Sensor Cabling.........................3
1.3 Electrostatic Discharge (ESD) Handling Procedure...3
1.4 Wiring ....................................................................4
1.4.1 Power Wiring ...............................................4
1.4.2 Sensor Wiring (Model 351 Remote Only)....4
1.4.3 4–20 mA Output Signal Wiring...................5
2.0 Set Up and Operation
2.1 User Interface .........................................................5
2.2 Main Menu Layout.................................................6
2.3 General Set Up Procedures .....................................7
2.4 Mode of Operation...............................................11
2.4.1 Height or Distance Selection .....................11
2.4.2 Height Mode .............................................11
2.4.3 Distance Mode...........................................11
2.5 Special Menus.......................................................12
2.5.1 Mode Selection ..........................................12
2.5.2 Loop Current Check..................................13
2.5.3 Service Menu .............................................13
3.0 Reference Information
3.1 Description...........................................................14
3.2 Principle of Operation ..........................................14
3.3 Troubleshooting....................................................14
3.3.1 Loss Displayed ...........................................14
3.3.2 Output Not Tracking Level........................14
3.4 Agency Approvals .................................................15
3.5 Specifications ........................................................16
3.5.1 Electronic...................................................16
3.5.2 Transducer .................................................16
3.5.3 Performance ...............................................16
3.5.4 Model 350 Dimensional ............................17
3.5.5 Model 351 Dimensional ............................18
3.6 Replacement Parts ................................................19
3.6.1 Parts Identification.....................................19
3.6.2 Sensors — 350 Integral..............................20
3.6.3 Sensors — 351 Remote..............................20
3.7 Model Numbers ...................................................21
3.7.1 Model 350 Integrally Mounted
Level Transmitter .......................................21
3.7.2 Model 351 Remote Mounted
Level Transmitter .......................................22
3.7.3 Connecting Cable ......................................22
3.7.4 Model 395 Remote Mounted Transducer ..23
NOTES ..............................................................................24
1.0
Installation
Caution: Please read the entire installation section carefully prior to
starting installation.
1.1
Unpacking
Unpack the instrument carefully. Make sure all components have been removed from the packing material.
Inspect all components for damage. Report any concealed
damage to the carrier within 24 hours. Check the contents
of the packing slip and report any discrepancies to the
factory. Check the nameplate model number to be sure it
agrees with the packing slip and purchase order. Check
and record the serial number for future reference when
ordering parts.
1.2
Mounting
1.2.1 Unit Mounting Location
The level transmitter should be mounted in a location that
permits easy access for maintenance. Avoid locations that
are exposed to direct sunlight, flooding, high levels of
radiated electromagnetic interference, and excessive
vibration or shock.
Model 350/351 sensors must be mounted directly over the
material to be measured. This may be accomplished with
the NPT mounting.
12" (305)
Dead Zone
Range Span
Max.
LIQUID
Figure 1
Transducer Dead Zone
1
Proper mounting and wiring of this ultrasonic unit is of
utmost importance. Accuracy can be adversely affected if
the sensor is mounted off axis, or where obstacles exist
between the sensor face and the liquid surface.
NOTE: The 350/351 requires a dead zone distance between the
bottom of the sensor and the maximum level of material to be
measured. Minimum dead zone = 12 inches (305 mm).
Maximum dead zone should be limited to about 10 ft
(3 meters) as this blanking distance is extended at the
expense of the useful span over which the instrument
operates satisfactorily. At temperatures greater than +140° F
(+60° C) the minimum dead zone is extended to 18 inches
(457 mm).
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
1.2.2 General Unit Mounting Requirements
2" NPT
Standpipe
Maximum 12"
(305 mm) or less
Transducer
8" (203)
Minimum I.D.
This end
welded
or flanged
Figure 2
Sensor Mounting in Standpipes
1. Make sure that there are no obstructions between the face
of the sensor and the liquid level. Ultrasonic energy radiates from the sensor face in a cone-shaped beam of approximately 12° width (diameter). Any object within the signal's path may produce an echo that can mask the true
echo returned by the liquid surface.
2. Position the sensor so that the radiating surface or sensor
face is exactly parallel to the target surface. This will provide the strongest return signals and enhance the reliability
of the 350/351.
3. In applications where the material level can reach the top
of the tank, the sensor portion of the unit must be mounted in a short, flanged standpipe. The diameter of the
standpipe should be at least 8 inches (203 mm) and its
length should be limited to 12 inches (305 mm). Refer to
Figure 2.
4. Avoid installing the sensor in tank top openings that
exhaust heated air or vapors. The boundaries between the
vapors and the outside air often represent acoustic impedance gradients that can cause troublesome sound reflections. In those installations, the sensor should be mounted
well away from the opening inside the tank, or in a standpipe as illustrated here. Refer to Figure 3.
1.2.3 Remote Transmitter Mounting Procedure
Remote mount Model 351 transmitters should be mounted
in a location that permits easy access for maintenance.
Avoid locations that are exposed to direct sunlight, flooding, high levels of radiated electromagnetic interference,
and excessive vibration or shock.
1. Mount the enclosure to a wall or flat surface using appropriate screws or bolts. A remote mounting bracket is available from the factory, if required. Refer to mounting hole
pattern as shown in the dimensional drawing on page 18.
2. Provide watertight seals for all wiring entrances into the
enclosure.
Figure 3
Sensor Mounting for Tanks with Exhaust
3. Install conduit for power and control wiring. Be sure
all connections to the enclosure maintain the proper
NEMA rating.
4. Be sure to replace housing cover before proceeding to
sensor mounting.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
2
1.2.4 Sensor Mounting Procedure
NOTE: Be sure the sensor location meets the requirements discussed
under Section 1.2.2, General Unit Mounting Requirements.
1. Position sensor over the tank opening. Install the 3⁄4" NPT
or 2" NPT sensor in the tank fitting, flange, or mount
with an optional mounting bracket. Pipe thread compound is recommended on stainless steel sensors.
Caution: Unit should only be hand-tightened into the process connection. The wrench flats should only be used when
removing the unit. Overtightening will cause transducer
errors and will void the warranty.
1.2.4.1 Remote Sensor Cabling
1. Remote mount Model 351 units require installation of
a watertight conduit from the sensor to the transmitter
enclosure.
2. Carefully pull the coaxial cable and temperature cable
attached to the sensor through the conduit to the
transmitter.
Caution: Avoid excessive twisting of both the sensor and temperature cables.
NOTE: In high humidity applications, it is recommended that the sensor wiring be completely immersed in an insulating compound
where the conduit connects to the sensor. (3M #4441 Gella
Re-enterable Encapsulating Compound or equivalent).
1.3
Electrostatic Discharge (ESD)
Handling Procedure
Magnetrol’s electronic instruments are manufactured to
the highest quality standards. These instruments utilize
electronic components which may be damaged by static
electricity present in most work environments. The following steps are recommended to reduce the risk of component failure due to electrostatic discharge:
1. Ship and store circuit boards in anti-static bags. If an antistatic bag is not available, wrap board in aluminum foil.
Do not place boards on foam packing materials.
2. Use a grounding wrist strap when installing and removing
circuit boards. A grounded workstation is also recommended.
3. Handle printed circuit boards only by the edges. Do not
touch components or connector pins.
4. Ensure that all electrical connections are completely made
and none are partial or floating. Ground all equipment to a
good, earth ground.
3
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
1.4
Wiring
1.4.1 Power Wiring
Power
GND
AC Hot
AC Neutral
Green
Head
Screw,
Protective
Ground
V out
Ref.
Loop +
Loop –
NOTE: Before connecting the power line to the transmitter, be sure
that the voltage identification on the nameplate matches the
power supply. DO NOT attempt to operate this unit at voltages other than as identified as it will damage the unit. Refer
to Figure 4.
NOTE: Ensure power is off before proceeding.
1. Remove housing cover and terminal strip cover.
2. No. 14 AWG wire size is the recommended maximum size
for power wiring. The power and analog output terminal
strips are marked for proper identification.
3. Bring wires into housing.
Figure 4
Transmitter Wiring
4. Attach earth ground to housing base using the green head
screw.
5. Run power leads to power terminal strip on PC board.
6. Dress wiring to ensure no interference or contact with
cover or circuit board components.
Caution: Observe all applicable electrical codes and proper wiring
procedures.
7. Prevent moisture seepage into the enclosure by installing
approved seal-drain fittings in the conduit run leading to
the unit.
8. Replace terminal strip cover and housing cover.
1.4.2 Sensor Wiring (Model 351 Remote Only)
The sensor contains two cables which must be connected
to the transmitter. The sensor cable is the round coaxial
cable which consists of a center coaxial conductor and a
shield wrapped around it. The temperature cable is a
twisted pair.
NOTE: A minimal length of insulation should be cut off the sensor
cabling to limit contact of the bare wires with the PC board.
TB2
Sensor
Cable
Temp.
Cable
X1
Gnd
+
–
Figure 5
Sensor Wiring
1. Connect center conductor of sensor cable to X1 position
on TB2 on the amplifier PC board in the transmitter.
2. Connect shield of sensor cable to GND of TB2.
3. Connect black wire of temperature cable, (twisted pair), to
negative (–) TEMP terminal of TB2. Refer to Figure 5.
4. The other wire from twisted pair, (red or white), is connected to positive (+) TEMP terminal of TB2.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
4
NOTE: If sensor housing is provided, only use connecting cable
ordered from the factory. Use of cables not provided by the
factory may void the warranty.
1.4.3 4–20 mA Output Signal Wiring
The 4–20 mA output connections are made by loosening
the screws at the output connections terminal strip, inserting the wires with spade lugs and tightening the screws.
Refer to Figure 4. The loop is optically isolated, has
non-grounded outputs, and can drive a 1000 ohm load.
Recommended wire is 22 gauge, twisted shielded pair.
Shield and black wire should be terminated at the (–)
output terminal. The shield should be floating at the
driven device.
1.
2.
3.
4.
LED
Display
ENT
Bring wires into housing.
Connect output wires to appropriate terminals.
Replace terminal strip cover.
Replace housing cover.
2.0
Set Up and Operation
2.1
User Interface
The Model 350/351 Transmitter can be programmed for a
variety of level control applications. Configuration data is
entered via three tactile-feedback push buttons located on
the circuit board under the cover of the enclosure (see
Figure 6). The push buttons and their functions are
shown below.
Upon power up, the LED will display the following
message: MAGNETROL INT’L followed by a series of walking
dots as follows: ....., or one of the chosen displays.
NOTE: The 350/351 is able to display a choice of four display modes.
This display may be changed by accessing the Special
Menus described on pages 12 and 13.
Figure 6
User Interface
IDLE –
MAGNETROL INT’L… (Preferred Mode)
DIST –
Displays distance in run condition
LEVL –
Displays tank level in run condition
LOOP – Displays current output
UP/RAISE – Used to scroll up through menu selec-
tions or raise numeric values. Holding down for a few
seconds will increase the rate of change.
5
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
DOWN/LOWER – Used to scroll down through
menu selections or lower numeric values. Holding
down for a few seconds will increase the rate of change.
ENT
ENTER – Used to select displayed value and to
continue to next menu selection.
2.2
Main Menu Layout
PRESS ENT TO BEGIN
UNIT
ENT
FEET
INCH
M
CM
MM
(XX.X)
(XXX.)
(X.XX
(XXX.)
(XXXX)
MANL
ENT
XXX.
AUTO
ENT
XXX.
MANL
ENT
XXX.
AUTO
ENT
XXX.
ENT
RNGE
ENT
ENT
SPAN
SAFE
ENT
~ (1*) ~
~ (2*) ~
ENT
SET?
ENT
: Saves parameters in memory:
ENT
4 mA (output on failure)
20 mA (output on failure)
LAST (hold last value)
ENT
DIST
ENT
ANY KEY
XXX.
LEVL
ENT
XXX.
SGNL
ENT
ANY KEY
XX%
LOOP
ENT
ANY KEY
XX.X
RUN?
ENT
Normal display as selected
in Initialization Menu.
UNIT
1* Path followed if no change is made to range or span.
2* Path followed if range or span is altered.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
6
2.3
General Set Up Procedures
After completing the Installation/Wiring sections (pages
1–5) and studying the Main Menu Layout (page 6), power
up the unit.
Caution: Power the Model 350/351 and perform all calibration in a
non-hazardous area.
There are nine steps in the initial set up. All nine steps
must be accessed in order to provide optimum control for
your application. After the initial set up, any of the nine
programmable functions can be accessed without powering
down the unit. All set up procedures are written based on
the HEIGHT Mode selection. Refer to Section 2.4.1,
Height or Distance Selection on page 11. If using the
DISTANCE Mode, all measurements are taken from the
sensor face.
NOTE: It is recommended that the user determine the values to be
programmed into the unit prior to entering values using the
keypad. This is due to a security feature which places a 30
second time limitation in various stages of the menu. If a time
out occurs during parameter selection, the unit assumes the
previous value for that parameter, continues to control under
those values and will revert to the display mode selected from
the Special Menu. Refer to page 12. If a time out occurs during span selection, the range as well as span will revert to the
previous setting. All set up procedures are written based on
the IDLE display mode as the unit shipped from the factory.
The DIST, LEVL, or LOOP display modes may be chosen at
any time. Refer to Section 2.5, Special Menus on page 12.
Upon power up, the unit will display the normal operating
message followed by the walking dots as follows:
MAGNETROL INT’L..........
STEP 1
To enter into the menu, press the ENT key. The display will
read UNIT. UNIT is the unit of measurement used for all
calculations and display within the 350/351. Press ENT
a second time to display the current units selected. To
or
arrow key to scroll
change UNITS, use the
through the UNIT selections. Press ENT to select the
displayed UNIT desired. The display will now read
UNIT once again. Press the
push button to proceed
to STEP 2 – RANGE (RNGE).
7
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
STEP 2
RANGE (RNGE) (4 mA) – Range is the distance from
the face or the bottom of the transducer to the farthest
point to be measured. The maximum range for the
Model 350/351 is approximately 25 feet (7.6 m). With
RNGE displayed, press ENT to continue. The display will
read MANL for manual entry of the range value. Use either
the
or
key to toggle between MANL and AUTO.
If MANL is selected, press ENT to display the current operating value. Use the
or
keys to raise or lower the
numeric value. Holding down the keys for several seconds
will increase the rate at which the values are changed.
When the desired value is displayed, press the ENT key to
accept this value and to exit RANGE.
Selecting AUTO will allow for the 350/351 to actually
measure the distance between the face of the transducer
and the current liquid level. This selection can be used as a
convenience when the level of the material being measured
is at a desired minimum level. Press ENT to display the current range. There is no time limitation in this selection.
Press ENT once again to accept the value and to exit
RANGE. Press the
key to proceed to STEP 3 –
SPAN (SPAN).
NOTE: When using the AUTO mode in range or span, the 350/351
must first be manually programmed with values for range and
span which are larger than the expected values. This allows
the 350/351 to automatically measure the correct values within the programmed window of accepted signals.
STEP 3
SPAN (SPAN) – Span is the difference between the lowest
level (empty tank) and the desired maximum level.
Maximum span is the range value, less the 12" dead zone
in which measurement cannot take place. With SPAN displayed on the LED, press ENT to display MANL for manual
entry of the span value. Use either the
or
key to
toggle between MANL and AUTO.
If MANL is selected, press ENT to display the current operating value. Use the
or
key to raise or lower the
numeric value. When the desired value is displayed, press
the ENT key to accept this value and to exit SPAN.
Selecting AUTO will allow the 350/351 to actually measure the distance between the face of the transducer and
the current material level, and calculates the span based on
that measurement. This selection is used in applications
when the level of the material being measured is at a desired
maximum level. Press ENT to display SPAN VALUE.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
8
NOTE: There is no time limitation in this selection. If OVER or UNDR
flashes, an illegal parameter has been selected. Review range
values and re-enter the correct value. Press ENT once again to
accept this value and to exit SPAN. Press the
key to proceed to STEP 4 – SAFE.
STEP 4
FAIL-SAFE (SAFE) – SAFE is designated as the fail-safe
condition of the transmitted output and the desired
condition of the output in the event of a loss of echo for
30 seconds or more. The user has a choice to drive the
unit to 4 mA, 20 mA, or to remain at the LAST value.
Press ENT to display the last chosen fail-safe condition. Press
or
arrow until desired fail-safe condition is displayed. Press ENT to accept the setting. Press the
arrow
to proceed to STEP 5 – DISTANCE (DIST).
Caution: If the actual level falls below the maximum range of the
unit, the fail-safe selection must be set up so that the
desired output is transmitted. When the level falls below
the programmed range, the display will show LOSS. If this
condition occurs, the fail-safe actions will take place.
WARNING: If level exceeds the programmed span, false display or
output/control errors will occur. Sensor should be
installed and unit programmed to assure that this level
condition cannot occur.
STEP 5
DISTANCE (DIST) – Distance is the measurement from
the face or the bottom of the transducer to the level of the
material being measured. This step is a read only display,
meaning a continuous display of distance in the units
selected in STEP 1. There is no time limitation in this
step. When DIST is displayed, press ENT to display the
key
distance. Press any key to exit DIST and press the
to continue to STEP 6 – LEVEL (LEVL).
STEP 6
LEVEL (LEVL) – Level is the measurement from the bottom of the level span to the actual level of the material
being measured. This step is a read only display, continuously displaying the level within the tank or vessel in the
units of measurement selected in STEP 1. There is no time
limitation in this step. When LEVL is displayed, press ENT
to display the level. Press any key to exit LEVL and press
the
key to continue to STEP 7 – SIGNAL (SGNL).
9
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
STEP 7
SIGNAL (SGNL) – Signal refers to the strength of the
signal being received from the surface level of the material
being measured. With SGNL displayed, press ENT to display the signal strength. There is no time limitation in this
step. The representation of the signal strength is displayed
in a value from 0–100% in 5% steps. Ideally the reading
should be between 40–95%. If the readings are less than
25%, improper alignment or poor installation procedures
may be the cause. Contact factory for assistance. If the
reading is within the acceptable range, press any key to
key to continue to STEP 8 –
exit SGNL and press the
LOOP (LOOP).
STEP 8
LOOP (LOOP) – Loop is a continuous display of the
actual loop output mA current. The display is limited to
3 characters and a decimal point. The 350/351 uses a D/A
converter with 8 bit resolution, and divides the operating
distance (SPAN in Height Mode, RANGE – SPAN in
Distance Mode) into 256 equal steps, each corresponding
to a step change in current. Therefore the smallest step
change in current is (20 – 4)/256 = 0.0625 mA. (Refer to
Height/Distance Selection for more information on resolution of output or current). With LOOP displayed, press
ENT to display the actual loop value. Any key will exit
LOOP and press the
key to continue to STEP 9 –
RUN (RUN?).
STEP 9
RUN (RUN?) – This is the end of the GENERAL SET UP
PROCEDURES and provides the operator the opportunity
to check previous settings before leaving the main menu.
Returning to the normal operating mode is accomplished
by pressing ENT .
MAGNETROL INT’L.... will then be displayed, or the previous
chosen display (DIST, LEVL, or LOOP) as described in
Section 2.5, Special Menus on page 12.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
10
2.4
Mode of Operation
2.4.1 Height or Distance Selection
The Model 350/351 allows the user to choose the MODE
of Operation, HEIGHT, (HGT ) or DISTANCE (DIST). This
choice is made in a special SET-UP menu which is accessed
by pressing the
button three times from the normal
run condition. The Model 350/351 responds by displaying
MODE. Press ENT to display either HGT for HEIGHT mode or
DIST for DISTANCE mode. The
and
buttons allow
ENT
the user to change the mode. Press
to accept the
displayed mode.
NOTE: Almost all level applications are configured in the HEIGHT
mode.
2.4.2 Height Mode
The HEIGHT mode will provide a 4 mA output when the
monitored fluid level is at the bottom of the tank, at the
distance defined by the RANGE setting which the customer has chosen. The current output at the top of the
tank, as defined by the customer programmed SPAN, is
20 mA. The output current that the 350/351 provides at
levels between the bottom and top of the tank is determined by an 8 bit D/A converter. This divides the programmed operating distance into 256 equal steps, each of
which has its own predefined output current. This 8 bit
D/A conversion is the limiting factor in the resolution
of the current loop. The resolution is the programmed
SPAN/256. At the maximum SPAN of 24 feet (7.3 m),
the resolution is 1.125 inches (29 mm).
Resolution is improved in normal operation with a more
limited operating distance. For example, if a 10 foot (3 m)
SPAN is chosen, the resolution is less than 1⁄2" (12 mm)
and at 2 feet (0.6 m), the resolution is less than 1⁄8" (3 mm).
Therefore the resolution is dependent on the SPAN selected for the particular application.
2.4.3 Distance Mode
The DISTANCE mode allows the RANGE and SPAN
to be programmed as the distance from the face of the
transducer. The distance mode is typically only used for
demonstration or diagnostic purposes, as opposed to
level measurement.
NOTE: The resulting loop current output in this mode is reversed from
the HEIGHT Mode. When setting these parameters, be sure all
values are calculated based on the same MODE of Operation.
11
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
In the DISTANCE Mode, when the liquid level is at the
bottom of the tank, defined by the RANGE setting, the
loop output current is 20 mA. When the liquid is at the
top of the tank, as defined by the SPAN set point, measured from the sensor face, the output is 4 mA.
2.5
Special Menus
The Special Menus allow setting of the mode of operation, maximum gain, and the desired default display in the
run condition. Shown below is the menu screen:
MODE
DIST
ENT
HGT
ENT
MAXG
44
ENT
ENT
ENT
DISP
IDLE
DIST
LEVL
LOOP
ENT
COMM
ENT
HOST
ENT
ADDR
ENT
ENT
TERM
BAUD
OFF
ENT
ENT
UNIT
00
9600
4800
2400
1200
ENT
2.5.1 Mode Selection
The Mode selection is accessed by pressing the
button
three times from the normal display mode or RUN. The
unit will display MODE. Press ENT to display present mode
or
keys to choose desired
(HGT or DIST). Use the
mode. Refer to Section 2.4, Mode of Operation for additional information.
NOTE: In the DISTANCE Mode, all values of range and span are
measured from the sensor face instead of the reference point
or range point. Although distance selection is measured from
the sensor face, the output can only be set between the SPAN
and RANGE.
Changing MODE will reset range and span. All set-up procedures must be repeated if MODE is changed.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
12
Press ENT and unit will display normal run condition if
mode was changed. If the mode of operation is not
changed, the display will show the next selection MAXG
(Maximum Gain Limit).
Press ENT to display current maximum gain limit. The
factory default valve for MAXG is 44. Use the
and
ENT
arrow to change limit. Press
to save maximum
gain value and exit MAXG.
IDLE –
MAGNETROL INT’L…
DIST –
Displays distance in run condition
LEVL –
Displays tank level in run condition
LOOP – Displays mA current value
Use the
or
arrow to select and press ENT and then
the
arrow to exit and return to the normal operating
mode.
NOTE: The COMM menu is not used.
2.5.2 Loop Current Check
This mode is accessed by pressing
normal display mode or RUN.
four times from the
The unit will display LOOP. The LOOP set up allows
the output current loop to be driven to 4 mA or 20 mA
regardless of the monitored fluid level. This feature is
especially beneficial for customer setup of new systems
with the 350/351 as the loop driver. Press ENT to exit LOOP
and to display UNIT.
2.5.3 Service Menu
SRVC
ENT
GAIN
TEMP
ENT
PEAK
When the
button is depressed twice, SRVC will be
displayed. Press ENT to display either GAIN, TEMP, PEAK,
TOFF or VERS.
TOFF
VERS
ENT
UNIT
13
XXXX
If in the event of a problem with the Model 350/351, it
may be necessary to access the Service Menu located within the unit. To access this menu, the
keypad must be
pressed two times while the unit is in the normal operating
mode and displaying the MAGNETROL INT’L… message, or
other chosen display.
ENT
the
will display the value for each of the selections. Use
or
key to scroll to the next parameter.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
NOTE: These values are read only parameters and cannot be
changed by the operator. They are for reference use only, however, in the event of a question or problem with the 350/351,
an authorized representative or service technician will request
the values displayed in this menu. Become familiar with this
Service Menu and the corresponding instructions in the event
of the need to access this Special Menu.
3.0
Reference Information
3.1
Description
Model 350/351 non-contact ultrasonic transmitters detect
level in a wide variety of liquid level applications. The noncontact sensor may be mounted integrally or it may be
mounted up to 100 feet (30 m) from the micro-processorbased electronics. All parameters are entered by means of an
easy to use menu-based keypad housed within the unit.
3.2
Principle of Operation
Pulses generated by the microprocessor-based electronics
are directed via the sensor to the liquid surface. The
returning echo signal is detected by the sensor. The microprocessor amplifies and converts the signal into a digital
representation of the distance from the reflecting surface.
A 4–20 mA output current loop is supplied providing
the monitored level data to external control devices. All
operating parameters are entered via three tactile-feedback
push buttons and displayed on a four character LED
display located under the transmitter cover.
3.3
Troubleshooting
3.3.1 Loss ( LOSS ) Displayed
1. The transmitter will display LOSS when the level falls below
the selected range value. Signal maintains fail-safe selection
and will return to normal output when level returns to a value
within selected range. Increase range if this is not desirable.
2. Echo lost. Check for surface foam, vapors or non-vertical
(off center) mounting of sensor.
3.3.2 Output Not Tracking Level
1. Check for obstruction in tank causing false echo.
2. Incorrect calibration mode (HEIGHT/DISTANCE) Refer to
Section 2.4.1, Height or Distance Selection on page 11.
If unit was set up in the DISTANCE mode, change to the
HEIGHT mode to verify transmitter performance.
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
14
3.4
Agency Approvals
AGENCY
FM
CSA
15
MODEL APPROVED
APPROVAL CATEGORY
APPROVAL CLASSES
351-60XX-000 or
351-R0XX-000 with
395-XXXX-0XX
Non-hazardous
NEMA 4X environments
350-60XX-05X or
350-80XX-05X
Non-hazardous
NEMA 4X environments
350-80XX-05E
350-80XX-05F
Explosion Proof
Class I, Div. 1; Groups C & D
Class II, Div. 1; Groups E, F & G
Class III, NEMA 4X, T6
395-XEXX-XXX
Explosion Proof
Class I, Div. 1; Groups B, C & D
Class II, Div. 1; Groups E, F & G
Class III, NEMA 4X, T6
395-XEXX-003
Explosion Proof
Class I, Div. 1; Groups A, B, C & D
Class II, Div. 1; Groups E, F & G
Class III, NEMA 4X, T6
351-50XX-000 or
351-R0XX-000 with
395-XXXX-0XX
Non-hazardous
Type 4X environments
350-50XX-05X or
350-80XX-05X
Non-hazardous
Type 4X environments
351-X0XX-000 with
395-XX1X-0XX
Non-incendive locations
Class I, Div. 2; Groups A, B, C & D
Class II, Div. 2; Groups E, F & G
Class III, Type 4X
350-50XX-05E
350-50XX-05F
350-80XX-05E
350-80XX-05F
Non-incendive locations
Class I, Div. 2; Groups A, B, C & D
Class II, Div. 2; Groups E, F & G
Class III, Type 4X
351-R0XX-000 with
395-XE1X-0XX
Explosion Proof
Class I, Div. 1; Groups C & D
Class II, Div. 1; Groups E, F & G
Class III, Type 4X
350-80XX-05E or
350-80XX-05F
Explosion Proof
Class I, Div. 1; Groups C & D
Class II, Div. 1; Groups E, F & G
Class III, Type 4X
395-XE0X-0XX
Explosion Proof
Class I, Div. 1; Groups A, B, C & D
Class II, Div. 1; Groups E, F & G
Class III, Type 4X
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
3.5
Specifications
3.5.1 Electronic
Supply voltage
120 VAC or 240 VAC, 50–60 Hz
Power consumption
5 watts maximum
Output (Controller)
Two (2) SPDT 120/240 VAC relays, adjustable differential, 10 A resistive
Output (Transmitter)
4–20 mA isolated, maximum 1000 ohm loop resistance
Fail-safe (Controller)
User selectable; on (energized) or off (de-energized)
Fail-safe (Transmitter)
User selectable; 4 mA, 20 mA, or hold last value
Time delay (Controller)
1–120 seconds adjustable for each relay set point
Electronics
-40° to +160° F (-40° to +71° C)
Humidity
95% Non-condensing (electronics)
3.5.2 Transducer
Maximum range
25 feet (7.6 meters) from transducer face
Span
2 inches (51 millimeters) minimum
24 feet (7.3 meters) maximum
Frequency
50 kHz
Minimum dead zone
12 inches from -20° to 140° F (305 millimeters from -30° to +60° C)
18 inches from +140° to +160° F (457 millimeters from +60° to +71° C)
Ambient temperature ➀
-20° to +160° F (-30° to +71° C)
Temperature compensation
Automatic over range of transducer operating temperature
Operating pressure
-10 to +50 psig (0.689 to +3.45 bar)
Beam angle
12° Conical
Cable length
100 feet (30 meters) maximum between transducer and electronics
➀ Kynar and 316SS transducers temperature rating -20° F to
+200° F (non-operational to +250° F).
3.5.3 Performance
Response time
1 second minimum
Repeatability
±0.125" (±3 mm)
Accuracy
±0.25% of full scale
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
16
3.5.4 Model 350 Dimensional
inches (mm)
A 3.25 (83) Rotation
B 3.00 (76) Clearance
Housing Legend
A. NEMA 4X
B. NEMA 4X/7/9
A 4.69 (119)
B 4.62 (117)
3/4" MNPT (P/N 36-3813-002)
2" FNPT (P/N 36-3813-001)
A 6.75 (200)
B 5.50 (218)
3/4" NPT
3.00
2"
FNPT
A 3.12 (79)
B 4.00 (102)
2" NPT
Thread
29.00
Optional
Mounting
Flange
20.50
6.12
22.50
6.00 (152) or 10.00 (254)
depending upon model
1.50
3.12
2.00
1.90
(48)
Floor Mount Bracket
Model 350
Integral Mount
Notes:
1. Allow 8 in. (203 mm) overhead
clearance for removal of cover.
2. Do not attempt to disassemble
transducer.
17
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
3.5.5 Model 351 Dimensional
inches (mm)
3/4" MNPT (P/N 36-3812-002)
2" FNPT (P/N 36-3812-001)
8.62
(219)
3.12
3/4" NPT
Conduit
Connection
2.37
(60)
2 Holes
.38 (10) Dia.
2.00
(51)
2.00
3.00
3.00
(76)
3.50
(89)
Bracket
front view
3.75
(95)
3.25
(83)
Side view
1/2" NPT (std.)
or 3/4" NPT (opt.)
Transducer/
Amplifier
Cable
Connection
20.50
22.50
1.50
Wall Mount Bracket
Model 351
Remote Mount (NEMA 4X)
4.63 (118)
Dia.
3.00
(76)
4.63 (118)
Dia.
2.75
(70)
2" NPT
Optional
Mounting
Flange
3.00
(76)
2" NPT Sensor w/ Housing
395-5X10-00X
3/4"
NPT
2.75
(70)
3.00 3/4" NPT
(89)
3/4" NPT
3.00 (76),
6.00 (152) or
10.00 (254)
depending
upon model
3/4" NPT
3.00
(89)
3.00 (76),
6.00 (152) or
10.00 (254)
depending
upon model
Sensor w/ Housing
395-1X10-00X
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
3/4"
NPT
3/4"
NPT
3.00
(76)
6.00 (152) or
10.00 (254)
depending
upon model
2"
NPT
3.00 (76),
6.00 (152) or
10.00 (254)
depending
upon model
Sensor w/o Housing
395-1X00-00X
395-5X00-00X
18
3.6
Replacement Parts
4
2
10
4
8
7
10
7
3
10
2
5
1
2
5
9
9
6
6
3
3
1
1
11
12
11
3.6.1 Parts Identification
No.
1
2
Description
Base
Cover
350 Integral
NEMA 4X
O-Ring
4
Main PC Board
5
Amplifier Board
NEMA 4X/7/9
004-9104-001
N/A
Lexane
089-6596-001
004-9104-001
N/A
NEMA 4X
Steel
089-6596-002
N/A
089-6595-001
NEMA 4X
7
RS-485 PC Board
8
9
Sensor PC Board
Terminal Block Cover
NEMA 4X
NEMA 4X/7/9
004-9149-001
012-1318-001
NEMA 4X/7/9
Voltage PC Board
Bracket
004-9153-001
Sensor
NEMA 4X
6
10
Transmitter
004-9160-002
NEMA 4X/7/9
3
351 Remote
012-2101-245
012-2101-253
089-6597-001
N/A
012-2101-345
Z30-3502-002
N/A
Z30-3501-002
N/A
120 VAC
Z30-3514-001
N/A
240 VAC
Z30-3514-002
N/A
Z30-3526-001
N/A
N/A
009-6164-001
005-6649-001
Z30-3515-001
005-6647-001
005-6650-001
N/A
N/A
005-6634-001
Lexan® is a registered trademark of General Electric
19
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
3.6
Replacement Parts (cont.)
3.6.2 Sensors — 350 Integral
No.
11
Connection
Sensor Material
Sensor Length
2"
Kynar/CPVC
Kynar
Stainless Steel
6"
Z58-1070-023
Z58-1071-023
Z58-1061-019
10"
Z58-1070-024
Z58-1071-024
Z58-1061-020
3.6.3 Sensors — 351 Remote
No.
Sensor
Housing
Connection
3 ⁄4" NPT
w/Housing
(short cables)
2" NPT
12
3 ⁄4" NPT
w/o Housing
(20 ft. of cables)
2" NPT
Sensor
Length
3"
6"
10"
3"
6"
10"
3"
6"
10"
3"
6"
10"
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
Sensor Material
Kynar/CPVC
Z58-1070-019
Z58-1070-020
Z58-1070-021
Z58-1070-022
Z58-1070-023
Z58-1070-024
Z58-1070-013
Z58-1070-014
Z58-1070-015
Z58-1070-016
Z58-1070-017
Z58-1070-018
Kynar
Z58-1071-019
Z58-1071-020
Z58-1071-021
Z58-1071-022
Z58-1071-023
Z58-1071-024
Z58-1071-013
Z58-1071-014
Z58-1071-015
Z58-1071-016
Z58-1071-017
Z58-1071-018
Stainless Steel
Z58-1119-004
Z58-1061-016
Z58-1061-017
Z58-1061-018
Z58-1061-019
Z58-1061-020
Z58-1119-002
Z58-1061-011
Z58-1061-012
Z58-1061-013
Z58-1061-014
Z58-1061-015
20
3.7
Model Numbers
3.7.1 Model 350 Integrally Mounted Level Transmitter
BASIC MODEL NUMBER
350
Integrally mounted level transmitter
HOUSING
➀
5
Carbon steel cover, NEMA 4X rating, single 3⁄4" NPT conduit hub
6
Transparent Lexan ®`cover, NEMA 4X rating, single 3⁄4" NPT conduit hub
8
Cast aluminum cover, NEMA 4X/7/9 rating, dual 3⁄4" NPT conduit hubs
➀ All three housings have a cast aluminum base.
INPUT VOLTAGE
0
120 VAC
1
240 VAC
OUTPUT
1
4–20 mA isolated
SENSOR CODE
5
Standard
TRANSDUCER
C
D
E
F
K
L
3
21
5
0
0
1
0
Kynar/CPVC, 6" (152 mm) length, 2" NPT
Kynar/CPVC, 10" (254 mm) length, 2" NPT
316 SS, 6" (152 mm) length, 2" NPT
316 SS, 10" (254 mm) length, 2" NPT
Kynar, 6" (152 mm) length, 2" NPT
Kynar, 10" (254 mm) length, 2" NPT
5
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
3.7.2 Model 351 Remote Mounted Level Transmitter
BASIC MODEL NUMBER
351
Remote mounted level transmitter
HOUSING ➀
5
6
R
Carbon steel cover, NEMA 4X rating, single 3⁄4" NPT conduit hub
Transparent Lexan ®`cover, NEMA 4X rating, single 3⁄4" NPT conduit hub
Cast aluminum cover, NEMA 4X rating, dual 1" NPT conduit hubs
➀ All three housings have a cast aluminum base,
INPUT VOLTAGE
0
1
120 VAC
240 VAC
OUTPUT
1
3
5
1
0
1
4–20 mA isolated
0
0
0
3.7.3 Connecting Cable
CABLE LENGTH IN FEET
10 feet (3 m) minimum, 100 feet (30 m) maximum length
Example: 12 foot cable length = 037-3170-012
0
3
7
3
1
7
0
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
22
3.7.4 Model 395 Remote Mounted Transducer
BASIC MODEL NUMBER
395
Remote mounted transducer
TRANSDUCER MATERIAL AND PROCESS CONNECTION
1C ➀
5C
1K ➀
5K¡
1E ➀
5E
Kynar/CPVC with 3⁄4" NPT
Kynar/CPVC with 2" NPT
Kynar with 3⁄4" NPT
Kynar with 2" NPT
316 Stainless Steel with 3⁄4" NPT
316 Stainless Steel with 2" NPT
➀ The 3⁄4" NPT transducer when supplied with transducer housing code 1 does not have a
process connection. Refer to transducer with housing illustration on page 7.
TRANSDUCER HOUSING AND CABLE
0
1
No transducer housing – comes with 20 feet (6 meters) of cable
Transducer housing – cable ordered separately (page 10)
MOUNTING BRACKET
0
1
2
3
4
None
Wall Mount with 3⁄4" NPT
Floor Mount with 3⁄4" NPT
Wall Mount with 2" NPT
Floor Mount with 2" NPT
TRANSDUCER INSERTION LENGTH
003
006
010
3
23
9
3" (76 mm)
6" (152 mm)
10" (254 mm)
5
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
NOTES:
51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
24
ASSURED QUALITY & SERVICE COST LESS
Service Policy
Return Material Procedure
Owners of Magnetrol/STI controls may request the return
of a control or any part of a control for complete rebuilding
or replacement. They will be rebuilt or replaced promptly.
Controls returned under our service policy must be returned
by Prepaid transportation. Magnetrol/STI will repair or
replace the control at no cost to the purchaser (or owner)
other than transportation if:
So that we may efficiently process any materials that are
returned, it is essential that a “Return Material
Authorization” (RMA) number be obtained from the
factory, prior to the material's return. This is available
through Magnetrol/STI’s local representative or by
contacting the factory. Please supply the following
information:
1. Returned within the warranty period; and
2. The factory inspection finds the cause of the claim to
be covered under the warranty.
If the trouble is the result of conditions beyond our control;
or, is NOT covered by the warranty, there will be charges
for labor and the parts required to rebuild or replace the
equipment.
In some cases it may be expedient to ship replacement parts;
or, in extreme cases a complete new control, to replace the
original equipment before it is returned. If this is desired,
notify the factory of both the model and serial numbers of
the control to be replaced. In such cases, credit for the materials returned will be determined on the basis of the applicability of our warranty.
No claims for misapplication, labor, direct or consequential
damage will be allowed.
1.
2.
3.
4.
5.
Company Name
Description of Material
Serial Number
Reason for Return
Application
Any unit that was used in a process must be properly
cleaned in accordance with OSHA standards, before it is
returned to the factory.
A Material Safety Data Sheet (MSDS) must accompany
material that was used in any media.
All shipments returned to the factory must be by prepaid
transportation.
All replacements will be shipped F.O.B. factory.
NOTE: See Electrostatic Discharge Handling Procedure on
page 3.
5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com
145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306
Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93
Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317
5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4028 • Fax 630-969-9489 • www.sticontrols.com
Copyright © 2004 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International.
STI and STI logotype are registered trademarks of Magnetrol International.
Performance specifications are effective with date of issue and are subject to change without notice.
The brand and product names contained within this document are trademarks or registered trademarks of their respective holders.
BULLETIN: 51-616.4
EFFECTIVE: June 2004
SUPERSEDES: June 1997