ECHOTEL® 940/941 - Magnetrol International

ECHOTEL® 940/941
Ultrasonic level switch
DESCRIPTION
Echotel® 940/941 ultrasonic level controls are compact integral units which utilize pulsed wave technology to detect
high or low level alarm in a broad range of viscous to light
liquids.
The unit is available in two versions:
- with integrated relay: Echotel® 940
- with 8/16 mA current shift: Echotel® 941
With relay or 8/16 mA output
F E AT U R E S
•
•
•
•
•
•
•
No calibration required.
Electronics potted in sensor.
Compact and easy to install design.
High or low level detection.
Max +85 °C @ 138 bar (+185 °F @ 2000 psi).
IP66, watertight, with flying leads.
Horseshoe shaped transducer gap.
A P P L I C AT I O N S
• VESSELS: any mounting position, ideally for filters.
• PROCESS CONDITIONS: unaffected by
- shifting dielectric, density, or PH
- presence of foam and visible vapors
- fast drain/fill rates
- vacuum conditions.
Model 940/941
with 3/4 NPT
and housing
MOUNTING
High alarm
Low alarm
Filling line
High alarm
Pump protection
Low alarm
Pump
Model 940/941
with Tri-Clamp® fitting
Model 940/941
with ANSI flange
Worldwide level and flow solutions
P R I N C I P L E O F O P E R AT I O N
The Echotel® 940/941 series operate on a two crystal
pulsed or “transmit-receive” principle which applies a high
frequency electronic burst to the transmit crystal. The signal is then converted into ultrasonic sound energy and
transmitted across the sensing gap toward the receiver
crystal. When there is air in the gap, the high frequency
sound energy will be attenuated, thereby not allowing the
energy to be received. When there is liquid in the gap, the
sound energy will propagate across the gap and the output
will indicate such a reception of the signal.
Air/Gas
Dry gap
Liquid
Wet gap
S E L E C T I O N D ATA
A complete measuring system consists of:
1. One order code for electronics and transducer
2. OPTION: Standard cable length is 45 cm (18"). Specify cable length separately when a longer cable is required.
3. OPTION: 052-7012-002: order code for Echotel 941 cast aluminium housing with terminal block, 3/4" NPT cable entry, IP 65
052-7012-003: order code for Echotel 940 cast aluminium housing with terminal block, 3/4" NPT cable entry, IP 65
BASIC MODEL NUMBER
9 4 0 – N
9 4 1 – N
Echotel® 940 OEM switch with integrated 1 A SPDT relay
Echotel® 941 OEM switch with current shift output 8/16 mA
PROCESS CONNECTION
Threaded
1 1 M
2 2 M
3/4" NPT
1" BSP (G 1")
2 3 M
3 3 M
4 3 M
1"
150 lbs ANSI RF
1 1/2" 150 lbs ANSI RF
2"
150 lbs ANSI RF
3 T M
4 T M
1 1/2"
2"
ANSI Flanges
Hygienic
Tri-Clamp®
Tri-Clamp®
ACTUATION LENGTH – Specify per cm (0.39") increment
Total insertion length = actuation length + 6 mm (0.25")
0 0 3
0 0 6
2 5 0
9 4
M
Minimum 3 cm (1.2") – for all connections except 1" BSP (G 1")
Minimum 6 cm (2.4") – for 1" BSP (G 1")
Maximum 250 cm (98.4")
complete order code for Echotel 940/941
X = product with a specific customer requirement
P E R F O R M A N C E S P E C I F I C AT I O N S
Description
Response time
Repeatability
Ambient Temperature
Humidity
Specification
0,5 s typical
± 2 mm (0.078")
-40 °C up to +85 °C (-40 °F up to +185 °F)
0-99 %, non condensing
Meets CE requirements (EN-61326: 1997+A1+A2) and in compliance with
Directive 2004/108/EC
Electromagnetic Compatibility
P H Y S I C A L / F U N C T I O N A L S P E C I F I C AT I O N S
Description
Input voltage
Power consumption
Current Shift
Signal output
Relay
Potted cable
Net Weight
Specification
12 - 35 V DC
<1W
8 mA (± 1 mA) - dry gap or 16 mA (± 1 mA) - wet gap
SPDT: 1 A @ 30 V DC
45 cm (18") flying leads of 18 AWG wires
510 g (unit with 3/4" NPT transducer and shortest length)
T R A N S D U C E R S P E C I F I C AT I O N S
Description
Material
Mounting
Actuation length
Operating process temp.
Specification
316/316L SST (1.4401/1.4404)
Threaded (NPT/BSP) – Flanged (ANSI) – Hygienic (Tri-Clamp®)
From 3 cm up to 250 cm (1.2" up to 98.4")
-40 °C up to +85 °C (-40 °F up to +185 °F)
103 bar @ +85 °C (1500 psi @ +185 °F) - transducers > 3 cm
138 bar @ +85 °C (2000 psi @ +185 °F) - transducers = 3 cm
Flanged models are downrated to the design pressure of the selected flange
Max pressure
ELECTRICAL WIRING
Current shift
8/16 mA – 12 - 35 V DC
Relay version
1A SPDT @ 24 V DC
black
green
+
black
red
mA
Wet gap
▼
▼
Dry gap
Normal operation
green
red
brown (NC)
orange (COM)
violet (NO)
+
DIMENSIONS in mm (inches)
3/4" NPT
84 (3.31)
84
(
31
3.
)
3/4" NPT
105 (4.13)
65 (2.56)
89
(3.50)
Actuation length
Actuation length
3/4" NPT
cable entry
Cast aluminium housing
6 (0.25)
6 (0.25)
Ø 22,9 (0.90)
Model 940/941 with 3/4" NPT
Model 940/941 with 1" BSP
3/4" NPT
3/4" NPT
99 (3.9)
99 (3.9)
Actuation length
Actuation length
6 (0.25)
6 (0.25)
Ø 22,9 (0.90)
Ø 22,9 (0.90)
Ø 22,9 (0.90)
Model 940/941 with Tri-Clamp®
Model 940/941 with ANSI flange
QUALITY ASSURANCE - ISO 9001:2008
THE QUALITY ASSURANCE SYSTEM IN PLACE AT MAGNETROL® GUARANTEES THE HIGHEST LEVEL OF QUALITY DURING THE DESIGN,
THE CONSTRUCTION AND THE SERVICE OF CONTROLS.
OUR QUALITY ASSURANCE SYSTEM IS APPROVED AND CERTIFIED TO ISO 9001:2008 AND OUR TOTAL COMPANY IS COMMITTED TO
PROVIDING FULL CUSTOMER SATISFACTION BOTH IN QUALITY PRODUCTS AND QUALITY SERVICE.
:2008
PRODUCT WARRANTY
ALL MAGNETROL ELECTRONIC AND ULTRASONIC LEVEL CONTROLS ARE WARRANTED FREE OF DEFECTS IN MATERIALS AND 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 INTERNATIONAL 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 THE EQUIPMENT. THERE ARE NO OTHER WARRANTIES EXPRESSED OR IMPLIED, EXCEPT, SPECIAL WRITTEN WARRANTIES COVERING SOME MAGNETROL
PRODUCTS.
®
BULLETIN N°:
EFFECTIVE:
SUPERSEDES:
UNDER RESERVE OF MODIFICATIONS
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Tel. +91 (11) 41661840 • Fax +91 (11) 41661843 • E-Mail: info@magnetrolindia.com
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Tel. +39 02 607.22.98 • Fax. +39 02 668.66.52 • E-Mail: mit.gen@magnetrol.it
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U.A.E.
UNITED
KINGDOM
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www.magnetrol.com
BENELUX
FRANCE
OUR NEAREST REPRESENTATIVE
BE 51-136.5
FEBRUARY 2013
May 2012