EDS7-3I

LIQUID LEVEL TRANSMITTER (FLOAT TYPE) DATA SHEET This is a liquid level transmitter utilizing an induction potentiometer. The vertical displacement of a flat on a liquid surface in an open tan k is conveyed by a strip of stainless steel wire rope to the transmitter body, and inputted as a rotating angle to the induction potentiometer which transmits a signal current of 4 to 20mA DC proportionate to the displacement of the liquid level. FNF FEATURES 1. High reliability Use of a contactless induction potentiometer means a long life and high reliability of the instrument. 2. Various specifications available The transmitter can be provided with intrinsically safe explosionproofing, various materials for its components, an arrester, an alarm unit plus other specs. 3. The operating principle and structure of the transmitter are simplified which enables easy handling, maintenance and inspection. Materials: Float; Hard PVC or SUS304 (stainless steel) Rope: Teflon coating on stainless steel wire Counterweight; Iron piece coated with zinc metallikon or SUS304 Instrument body; Aluminum alloy Conduit connection: G3/4 Case: Splash-proof type (JIS C 0920) Arrester: Built in on request Explosionproof structure: I ntrinsically safe explosionproofing i3nG5 Mass {weight}: Approx. 10.5kg (excluding float and counterweight) External dimensions (H × W × D): Approx. 320 × 346 × 218mm Finish color: Silver (melamine paint); may be provided with acid and alkaliproof treatment Optional attachment: Alarm unit (limit switch) (Alarm unit can't be installed with intrinsically safe explosionproof) structure); Contact capacity 250V AC 5A 230/115V DC 0.2/0.4A N.O.-1a- contact 3 pieces are available in the transmitter for upper limit and lower limit SPECIFICATIONS Measuring range: 0 to 0.5……40m (Refer to standard measuring ranges) Indicator: Digital type (4 digits) Allowance: ± 1.0% or ± 0.5% on request Output signal: 4 to 20mA DC Ripple content: 1.5% p-p (at approx. 25kHz) Allowable load resistance: 0 to 550Ω (at 24V DC) Power supply: 13 to 33V DC (26V DC or less with intrinsically safe explosionproofing) (27V DC or less with arrester) 100V/24V ± 10% , AC 50/60Hz (see "Example of configuration") Wiring method: 2-wire type Ambient temperature: –30 to +80°C (but not usable in freezing condition) 50 ° C max. with intrinsically safe explosionproofing 60°C max. with arrester Ambient humidity: Less than 95% RH Liquid temperature: Less than 45°C (when float material is PVC-vinyl chloride-) EDS7-3i Date July. 18, 2006 FNF Range of delivery: Transmitter and standard accessories (rope, float, and counterweight) CODESYMBOLS 12345678 9 10 11 12 13 F NF 4 A B C D E F G H J K V S E S 1 Description Lenght of rope [m] 5 10 15 20 25 30 40 50 60 80 Float material PVC SUS304 (stainless steel) Counterweight material Steel SUS304 (stainless steel) Standard measuring ranges Measuring ranges 0 to 0.5m 0 to 1.5m 0 to 2.0m 0 to 2.5m 0 to 3.0m Measuring ranges 0 to 3.5m 0 to 4.0m 0 to 4.5m 0 to 5.0m 0 to 5.5m Measuring ranges 0 to 6.0m 0 to 6.5m 0 to 7.0m 0 to 8.0m 0 to 9.0m Measuring ranges 0 to 10.0m 0 to 12.0m 0 to 14.0m 0 to 15.0m 0 to 16.0m RELATED DEVICE Distributor A B K Transmitter 4 to 20mA 4 to 20mA intrinsically safe explosionproof structure Arrester with "A" Alarm unit (limit switch) Note: Impossible when "B" specified in 7th dight of code. None Upper.lower limit, 1 piece each Upper.lower limit, 2 pieces each Upper.lower limit, 3 pieces each 0 1 2 3 0 1 Guide pulley None Provided with 1 pulley Provided with 2 pulleys Provided with 3 pulleys Allowance ±1% (standard instrument) ±0.5% (high allowance instrument) Treatment Standard Acid and alkaliproof treatment Chlorine-proof treatment ORDERING INFORMATION 1. 2. 3. 4. 5. 6. 7. Object to be measured ro application Product name Code symbols Measuring range Rope lenght Float, counterweight meterial Whether or not any attachments (guide pulley, alarm unit, etc.) are required 8. Whether or not wxplosionproofing and other measures are required 9. Other matters that demand care 0 2 4 6 Y *B *D INSTALLATION DIAGRAM CONNECTION DIAGRAMS 2 PRINCIPLE OF INDUCTION POTENTIOMETER When the short circuit ring is positioned at the center, the magnetic flux at left and right sides is equal and the voltages produced at detecting coils S 1 a nd S2 a re equal. But if the ring rotates to the right side for example, then the flux at S1 will increase and that at S2 will decrease. According to this difference an output voltage is provided which is proportional to the ring displacement (input rotating angle). EXAMPLE OF CONFIGURATION O- I- O+ I+ With 24V DC power supply O- + O+ - With 100V/24V AC power supply 3 FNF Transmitter Approx. 218 Approx. 160 27 Pulley 14 ø262 45 20 ø332 180 Stopper 50 100 "A" Conduit connection (2 pieces) 31 15 280 320 2-ø18 holes 318 Details of "A" ø20 8 Float Counterweight G 3/4 Float Hard PVC Guide SUS304 (stainless steel) 250 16 Counterweight 30 16 ø21 262 ø38 18 Approx. 276 Approx. 277 Guide 5 ø3.5 hole ø3.5 hole 175 140 185 ø216 150 ø216 Caution on Safety *Before using this product, be sure to read its instruction manual in advance. Asterisked (*) items: Non-standard. Head Office Gate City Ohsaki, East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, Japan http://www.fesys.co.jp/eng Instrumentation Div. International Sales Dept. No.1, Fuji-machi, Hino-city, Tokyo, 191-8502 Japan Phone: 81-42-585-6201, 6202 Fax: 81-42-585-6187 http://www.fic-net.jp/eng Information in this catalog is subject to change without notice. Printed in Japan