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 1 2 M 2 2 M 3/4" NPT 3/4" BSP (G 3/4") 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 0 2 9 4 M 0 0 0 5 3 5 6 0 Minimum 3 cm (1.2") – for all connections except BSP Minimum 5 cm (2.0") – for 3/4" BSP (G 3/4") 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 2014/32/EU 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) - transducer length > min. length 138 bar @ +85 °C (2000 psi @ +185 °F) - transducer length = min. length 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) Threaded NPT Threaded 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) Tri-Clamp® Welded 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 Heikensstraat 6, 9240 Zele, België -Belgique Tel. +32 (0)52.45.11.11 • Fax. +32 (0)52.45.09.93 • E-Mail: [email protected] DEUTSCHLAND Alte Ziegelei 2-4, D-51491 Overath Tel. +49 (0)2204 / 9536-0 • Fax. +49 (0)2204 / 9536-53 • E-Mail: [email protected] INDIA B-506, Sagar Tech Plaza, Saki Naka Junction, Andheri (E), Mumbai - 400072 Tel. +91 22 2850 7903 • Fax. +91 22 2850 7904 • E-Mail: [email protected] ITALIA Via Arese 12, I-20159 Milano Tel. +39 02 607.22.98 • Fax. +39 02 668.66.52 • E-Mail: [email protected] RUSSIA 198095 Saint-Petersburg, Marshala Govorova street, house 35A, office 427 Tel. +7-812.702.70.87 • E-Mail: [email protected] U.A.E. UNITED KINGDOM DAFZA Office 5EA 722 • PO Box 293671 • Dubai Tel. +971-4-6091735 • Fax +971-4-6091736 • E-Mail: [email protected] Unit 1 Regent Business Centre, Jubilee Road Burgess Hill West Sussex RH 15 9TL Tel. +44 (0)1444 871313 • Fax +44 (0)1444 871317 • E-Mail: [email protected] www.magnetrol.com BENELUX FRANCE OUR NEAREST REPRESENTATIVE BE 51-136.6 SEPTEMBER 2014 February 2013