Echotel® Model 350/351 Ultrasonic Non

Echotel® Model 350/351
Ultrasonic Non-Contact Level
Transmitter and Controller
D E S C R I P T I O N
Model 350/351 ultrasonic non-contact level devices are
available as a dual point controller, offering the user
a wide choice of alarm and control configurations,
or a continuous transmitter, offering a 4–20 mA
isolated output of the measured level data to external
control devices.
Three electronics housings and several transducers are
offered to provide for many different user configurations. Unaffected by shifting specific gravity, viscosity,
or conductivity, it is ideal for use in a wide variety of
liquid level applications.
L E V E L
T R A N S M I T T E R
When ordered as a level transmitter the Model 350/351
provides a 4–20 mA isolated output to indicate the
level throughout the configured span. User selectable
fail-safe values of 4 mA, 20 mA, or hold are offered
should the self-diagnostics detect any system faults.
C O M M O N
F E A T U R E S
• FM & CSA approved for hazardous locations
L E V E L
C O N T R O L L E R
As a level controller, the Model 350/351 has two independent 10 amp SPDT relays that are fully adjustable
throughout the entire level span. The relays provide a
wide variety of alarm and pump control capabilities.
Failsafe selections for the controller are on, off,
or hold.
• Four-digit LED display gives visual readout of
distance, level, or signal strength
• Adjustable span of 2 inches to 24 feet (51 millimeters
to 7.3 meters)
• Automatic variable gain
• Non-volatile memory, battery backup not required
• Automatic temperature compensation ensures high
accuracy over entire operating range
• Time delay of up to 120 seconds allows output
damping in turbulent vessels
T Y P I C A L
L E V E L
A P P L I C A T I O N S
MODEL 350/351 DUAL POINT CONTROLLER RELAY CONFIGURATIONS
The Model 350/351 controller is equipped with two
10 amp SPDT independent field adjustable alarms. The
user can configure the set points in either the distance or
the height mode for each of the two relays. The relays
may be used in combination with each other with set
points entered independently (for narrow or wide differential), or used for fail-safe conditions. The unit allows
12"
Dead
Zone
Relay 1,
Energized
the user to preset the relay position (energized or
de-energized) as a fail-safe, should the ultrasonic signal
be lost. The drawings below depict different relay functions for a variety of process requirements. Additionally,
when both relays are configured as wide differential, the
user can select a lead/lag pump alternation mode.
12"
Dead
Zone
Relay 2,
Energized
Relays 1 & 2,
De-energized
Relay Energized
Relay De-Energized
Set Point 2,
High Alarm
Relay De-energized
Relay Energized
Set Point 1,
Low Alarm
Wide differential
Narrow differential
MODEL 350/351 CONTINUOUS TRANSMITTER CONFIGURATION
The Model 350/351 transmitter has a 4–20 mA current output that provides level data to external control devices.
The user can configure the unit in either a distance or
height mode of operation. The height mode will provide a
4 mA output when the liquid level is at the bottom of the
tank, as defined by the range setting. A 20 mA current is
output when the liquid level is at the top of the tank, and
is defined by the entered span.
The distance mode allows the user to enter the range and
span as the distance from the face of the transducer. The
resulting current output is reversed, providing a 20 mA
when the liquid level is at the bottom of the tank, and
4 mA when the liquid is at the top of the tank and 4 mA
when the liquid is at the top of the tank.
Minimum
Dead Zone
12 inches (305 mm)
100% (20 mA)
Air
Maximum
Range
25 feet
(7.6 M)
Maximum Span
24 feet (7.3 M)
Liquid
0% (4 mA)
Height mode
2
E L E C T R O N I C S
S P E C I F I C A T I O N S
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
Failsafe (Controller)
User selectable; on (energized) or off (de-energized)
Failsafe (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)
T R A N S D U C E R
S P E C I F I C A T I O N S
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).
P E R F O R M A N C E
S P E C I F I C A T I O N S
Response time
1 second minimum
Repeatability
±0.125" (±3 mm)
Accuracy
±0.25% of full scale
3
M E A S U R E M E N T
R A N G E
C A L C U L A T I O N S
MEASUREMENT RANGE EXPECTATIONS
HOW TO CALCULATE
Ultrasonic non-contact devices are typically rated for a
maximum range in ideal conditions. Experience has
shown that maximum range must be adjusted for certain factors. Although the maximum range rating is
somewhat conservative, each application must be
evaluated for specific conditions.
To estimate how successful a particular application may
be, using the chart on page 5:
The operating parameters listed below can impact the
maximum range of measurement:
3. Multiply all of the selected values together.
Example:
The vessel is a closed-top tank, uninsulated, 15 feet tall.
Surface agitation:
Expect slight agitation from fill line.
Derating multiplier 0.9.
Vapor and steam:
The process temperature is +120° F;
a little condensation is expected.
Derating multiplier 0.9.
Beam interference: There is a support near the bottom
of the tank, but still outside of a
4° cone.
Derating multiplier 0.8.
Sensor alignment
Sensor alignment: The sensor will be perpendicular to
the liquid surface.
Derating multiplier 1.0
Temperature
Pressure
Air movement
Beam spread
interference
Dust
Vapors
Foam
Surface
agitation
2. Enter the corresponding performance multiplier
value in the application column.
4. Multiply step 3 by the maximum potential range
of 25 feet. This yields a value that is the maximum allowable measurement range for the
application.
• Surface agitation
• Vapors and steam (as measured by temperature
difference between liquid and air)
• Beam spread interference
• Sensor alignment
• Foam
• Dust
• Air movement
• Ambient temperature
• Pressure
Beam spread
interference
1. Select one condition from each of the operating
parameters that best describes your application.
Foam:
None. Derating multiplier 1.0
Dust:
None. Derating multiplier 1.0
Air movement:
None. Derating multiplier 1.0
Ambient temp.:
0 to +80° F. Derating multiplier 1.0
Pressure:
+40 PSIG. Derating multiplier 1.0
Will the Model 350/351 work for this application?
Calculation:
Multiply all values together in the application column:
0.9 x 0.9 x 0.8 x 1.0 x 1.0 x 1.0 x 1.0 x 1.0 x 1.0 x
25 feet (maximum) = 16.2 feet
The calculation yields 16.2 feet as the new maximum range.
Since the tank is 15 feet tall, this application will give satisfactory results.
NOTE: The performance estimates provided are conservative estimates. Since these factors are subjective,
the estimates have been designed to provide very
high confidence of system success. Contact the
factory if there are any questions concerning the
interpretation of any of these values.
4
M E A S U R E M E N T
R A N G E
OPERATING PARAMETER
C A L C U L A T I O N S
CONDITION
SURFACE AGITATION: Surface agitation or waves can degrade
the performance. Moderate agitation results in only slight degradation of performance. The worst case is when the surface is a good
reflector, but in the wrong direction. (Refer to sensor alignment.)
VAPOR AND STEAM: Vapors in the air space, above the process,
become apparent, and cause problems when the liquid process
temperature is well above the temperature of the airspace. The
greater the difference, the more expected vapor problems. The
problems result from condensation or layering in the sound path,
both of which attenuate the sound signal, degrading performance.
Avoid steam if possible.
To avoid these problems, ensure that the vessel is insulated so that
vapors are less likely to condense. If a vent is used, be sure that the
vent, which is where condensation will form, is well away from
the sensor.
BEAM SPREAD INTERFERENCE: It is strongly recommended
that nothing be allowed within the sensor’s beam, except the liquid
which is being monitored. Often, the signal from the liquid will be
strong, compared to the signal from other sources, such as, ladder
rungs filling process material, support struts, etc. For that reason,
some applications may provide satisfactory results, even with than
60 interference. Interference from agitator blades is only an intermittent interference that usually has little effect on performance.
It is recommended there be no interference within the 6° half angle
of the sensor beam. If interference is unavoidable, make the interference as far as possible from the sensor so that the real signal at
the longest distance is stronger than the interference signal.
SENSOR ALIGNMENT: Optimum performance is obtained when
the sensor is perfectly aligned. If the process is not perpendicular to
the sound beam, the sound will not reflect properly back to the
sensor. The effect is significant.
FOAM: Even small thicknesses of foam can attenuate the ultrasound and render the system inoperative. If possible, moving the
sensor to an area in the tank where there is less foam, will improve
the performance. Thick, heavy density foams can sometimes produce a reflection from the top of the foam. The multipliers shown
at right are general guidelines. For further assistance consult
the factory.
PERFORMANCE
MULTIPLIER
APPLICATION
Smooth, glass-like surface . . . . . . . . . .1.0
Slight agitation, choppiness . . . . . . . . .0.9
Heavy agitation . . . . . . . . . . . . . . . . . . .0.8
Slight vortex . . . . . . . . . . . . . . . . . . . .0.7
No condensation . . . . . . . . . . . . . . . . . .1.0
Little condensation . . . . . . . . . . . . . . . .0.9
Much condensation/ foggy
appearance . . . . . . . . . . . . . . . . . . . . . .0.8
No interference within 3.5°
half beam angle . . . . . . . . . . . . . . . . . . .1.0
Agitator at speed less than 60 RPM . . .1.0
Agitator at speed greater than
60 RPM . . . . . . . . . . . . . . .Consult factory
Interference outside 4°, far from
sensor (in bottom third of range) . . . . . .0.8
Interference outside 4°, near to
sensor (in top third of range) . . . . . . . . .0.5
Beam perpendicular to liquid surface . .1.0
Beam 4° off from perpendicular . . . . . .0.5
No foam . . . . . . . . . . . . . . . . . . . . . . . .1.0
Light froth, less than 0.25" thick . . . . . .0.8
Light foam, less than 0.5" thick . . . . . .0.5
Light foam, more than 1" thick . . . . . . .0.1
DUST: Dust attenuates the sound and results in poor performance.
Even barely perceptible haze in the air can cause significant
attenuation.
No dust . . . . . . . . . . . . . . . . . . . . . . . . .1.0
Haze, barely perceptible . . . . . . . . . . . .0.7
Slight dust . . . . . . . . . . . . . . . . . . . . . . .0.4
Heavy dust . . . . . . . . . . . . . . . . . . . . . .0.1
AIR MOVEMENT: The movement of air, as possible in an open top
vessel, can create a layer from which the sound will reflect. This
will be most noticeable in applications where vapors or steam tend
to form.
No air movement . . . . . . . . . . . . . . . . .1.0
Open vessel, but sensor below rim . . .0.8
Open air movement in sound path . . . .0.7
AMBIENT TEMPERATURE: The ambient temperature can have a
significant effect on the sound and on the sensor’s capability to
transmit and receive sound. The most noticeable effect on the
sensor is at the temperature extremes.
-20° F to +140° F (-29° C to +50° C) . . .1.0
-40° F to -20° F (-40° C to +29° C) . . . .0.9
+140° F to +160° F (+50° C to +70° C) .0.9
PRESSURE: Sound requires air molecules to be able to travel.
Sound will not travel in a vacuum. Likewise, higher pressures will
allow thesound to continue without decay, which can cause problems with multiple echoes.
-10° to +50 psig (0.689 to +3.45 bar) . .1.0
Pressures outside
above rating . . . . . . . . . . . .Consult factory
Multiply all values together in the application column
Multiply by 25' (maximum potential range)
Maximum allowable measurement range for this application
× 25'
=
feet
5
M O D E L
I N C H E S
3 5 0
D I M E N S I O N A L
S P E C I F I C A T I O N S
( M M )
Notes:
1. Allow 8 in. (203 mm) overhead
clearance for removal of cover.
2. Do not attempt to disassemble
transducer.
Rotation Clearance:
2.63 (66)
7.07
(180 mm)
7.07
(180 mm)
3/4" NPT
Conduit
Connection
3/4" NPT
Conduit
Connection
4.00
(102 mm)
2" NPT
Thread
Optional
Mounting
Flange
6.00 (152) or
10.00 (254)
depending
upon model
1.90
(48)
Model 350 w/Carbon Steel or Lexan Cover
Housing Codes 5 or 6 (NEMA 4X)
6
3/4" NPT
Conduit
4.00
Connection (102 mm)
(Plugged)
2" NPT
Thread
Optional
Mounting
Flange
6.00 (152) or
10.00 (254)
depending
upon model
1.90
(48)
Model 350 w/Cast Aluminum Cover
Housing Code 8 (NEMA 4X/7/9)
M O D E L
I N C H E S
3 5 1
D I M E N S I O N A L
S P E C I F I C A T I O N S
( M M )
5.93
(151)
3.87 (98)
Rotation
clearance
8.62
(219)
3/4" NPT
Conduit
Connection
2.37
(60)
2 Holes
.38 (10) Dia.
2.00
(51)
3.00
(76)
3.75
(95)
3.50
(89)
3.25
(83)
Side view
Bracket front view
1/2" NPT (std.)
or 3/4" NPT (opt.)
Transducer/
Amplifier
Cable
Connection
1" NPT
(plugged)
3/4"
NPT
6.00 (152) or
10.00 (254)
depending
upon model
3.75
(95)
3.00
(76)
2.00
(51)
3/4" FNPT
3.50
(89)
3/4"
NPT
2"
NPT
3/4"
NPT
1" NPT
2.37
(60)
2 Holes
.38 (10) Dia.
Remote Mounted Electronics
Housing Codes 5 or 6
3.00
(76)
8.46
(215)
10.68
(271)
Remote Mounted Electronics
Housing Code R
3.00 (76),
6.00 (152) or
10.00 (254)
depending
upon model
4.63 (118)
Dia.
3.00 (76)
Rotation Clearance
2.75 (70)
Transducers without Housings
3/4"
NPT
2" NPT
Thread
3/4" MNPT (P/N 36-3813-002)
2" FNPT (P/N 36-3813-001)
Optional
Mounting
Flange
3.00
(76)
4.00
(102)
3.00 (76),
6.00 (152) or
10.00 (254)
depending
upon model
2"
FNPT
29.00
(736)
1.90
(48)
2" NPT Transducer with Housing
Note: 3⁄4" NPT transducer can not be used with transducer housing.
20.50
(520)
22.50
(572)
6.12
(155)
3.12
(80)
1.50
(38)0
2.00
(50)
3.12
(80)
Floor Mount Bracket
Note: The 2" NPT transducers mount into a 2" female NPT on top of the
floor or wall mount brackets. The 3⁄4" NPT transducers mount into a
3
⁄4" female NPT underneath the floor or wall mount brackets.
3/4" MNPT (P/N 36-3812-002)
2" FNPT (P/N 36-3812-001)
2.00
(50)
3.00
(76)
1.50
(38)
20.50
(520)
22.50
(572)
Wall Mount Bracket
7
A G E N C Y
AGENCY
FM
CSA
8
A P P R O V A L S
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
350
INTEGRALLY
P A R T
N U M B E R
MOUNTED
LEVEL
CONTROL
Models available for quick shipment, usually within one week after factory
receipt of a purchase order, through the Expedite Ship Plan (ESP)
BASIC MODEL NUMBER
350
Integrally mounted level control
HOUSING ➀
5
6
8
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/7/9 rating, dual 3⁄4" NPT conduit hubs
➀ All three housings have a cast aluminum base.
INPUT VOLTAGE
0
1
120 VAC
240 VAC
OUTPUT
0
1
Two independent 10 amp SPDT relays
4–20 mA isolated
SENSOR CODE
5
Standard
TRANSDUCER
C
D
E
F
K
L
3
5
0
0
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
9
3 5 1
P A R T
R E M O T E
M O U N T E D
N U M B E R
L E V E L
C O N T R O L
Models available for quick shipment, usually within one week after factory
receipt of a purchase order, through the Expedite Ship Plan (ESP)
BASIC MODEL NUMBER
351
Remote mounted level control
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
0
1
3
5
1
0
0
C O N N E C T I N G
P A R T
Two independent 10 amp SPDT relays
4–20 mA isolated
0
0
C A B L E
N U M B E R
CABLE LENGTH IN FEET
10 feet (3 m) minimum, 100 feet (30 m) maximum length
Example: 12 foot cable length = 037-3170-012
0
10
3
7
3
1
7
0
3 9 5
P A R T
R E M O T E
M O U N T E D
T R A N S D U C E R
N U M B E R
BASIC MODEL NUMBER
395
Remote mounted transducer
TRANSDUCER MATERIAL AND PROCESS CONNECTION
1C ➀
5C➁
1K ➀
5K➁
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
9
3" (76 mm)
6" (152 mm)
10" (254 mm)
5
11
Q U A L I T Y
The quality assurance system in place at
Magnetrol guarantees the highest level of
quality throughout the company. Magnetrol
is committed to providing full customer
satis=faction 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.
Several Echotel Model 350/351 Ultrasonic
Level Transmitters are available for quick
shipment, usually within one week after
factory receipt of a purchase order, through
the Expedite Ship Plan (ESP).
To take advantage of ESP, simply match the
color coded model number codes (standard
dimensions apply).
E S P
Expedite
Ship
Plan
Models covered by ESP service are conveniently color coded in the selection data charts.
ESP service may not apply to orders of ten
units or more. Contact your local representative for lead times on larger volume orders,
as well as other products and options.
W A R R A N T Y
All Magnetrol electronic level and flow controls
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 will repair or replace the
control at no cost to the purchaser (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 written
warranties covering some Magnetrol products.
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
Heikenstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Telex 25944 • Fax 052 45.09.93
Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317
Copyright © 2004 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
Magnetrol and Magnetrol 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: 51-111.11
EFFECTIVE: July 2004
SUPERSEDES: January 2004