data sheet fqk immersion type level meter this level meter is used for measuring the level of under- ground water, river, clean water, sewage or industrial waste water. it measures the level in the from of water head pres- sure, converts it into a current signal and then transmits it to a receiving instrument. the detector is either suspended in the water or placed on the bottom of the water. the water head pressure acting on the diaphragm is measured via a diffusion type silicon strain gage. features 1. compact, lightweight and highly reliable use of a diffusion type silicon strain gage in the pressure receiving section makes the instrument compact, light- weight, and strong against vibration and shock, and it can be installed anyplace. 2. easy to install since the detector is small and light, it can be readily low- ered into or lifted out of the water via a cable; use of a chain is unnecessary. for placing it at the bottom of the water, the detector can be attached to a stand to keep it stable. 3. easy to install the construction of the instrument enables easy adjust- ment of zero point, span and damping in the field. 4. usable for any kind of water this level meter can be used for clean water, sewage wa- ter, industrial water, agricultural water, industrial waste water, river water or underground water etc. 5. arrester is builted-in. specifications measuring range: 0 to 3, 5, 10, 20, 30m (water density: level message of ?ne? material: detector; pressure receiving diaphragm 316l stainless steel other wetted parts 304 stanless steel cable pvc covering stand 304 stainless steel transmitter: aluminum alloy (epoxy-polyure- than double coating, silver) (field indicator cover; black n3) output signal: 4 to 20 ma dc allowable load resistance: 0 to 550 ? (at power supply of 24v dc) power supply: 24v 10%dc, 0.48w (100v or 24v 10%ac, 50/60hz, is also usable. see ?xample of configuration?) wiring system: 2-wire system liquid temperature: 0 to 30?c ambient temperature: -20 to +60?c ambient temperature: less than 90% rh damping: no damping, or damping with time constant of 0.8, 2.2, 6 sec; selectable in 4 steps zero adjustment, span adjustment width: +1.5m upper limit of span: 30 m lower limit of span: 3 m transmitter waterproof structure: jis c 0920 immersion-proof type external dimensions: detector: 43 x 185mm transmitter(h x w x d); 110 x 160 x 185mm mass {weight} approx: detector; 0.8 kg transmitter; 3.5 kg cable; 0.3 kg/m mounting method: detector; suspended in water or placed at water bottom () transmitter detector date EDS7-11D july. 20, 1994
fqk 12345678 910 description fqk w 2 measuring range [m] 0 to 3 0 to 5 0 to 10 0 to 20 0 to 30 hollow cable length l [m] (total length=measuring range + l) measuring range + 5 (basic) measuring range + 10 measuring range + 20 measuring range + specified value (total length must be 100m or less) transmitter and flied indicator 4 to 20ma a with flied indicator (0 to 100% linear scale) a with flied indicator (m actual-value scale) option none with detector stand treatment none acid and alkali-proof treatment (transmitter and mounting parts) 1 2 3 4 5 * * * * 1 2 3 z a d e 0 1 y b fundamental block diagram operating principle of detector code symbols transmitter; mounted horizontally or vertically on 50a(2b) pipe with u-boit conduit connection: jis g 1 / 2 arrester: built in protective perfomance: voltage limit; between lines: 50v or less for earth and line: 200v or less operation delay; less than 0.5 s max. discharge current; 8 x 20 s, 2000a repetitive discharge; 400 times at 8 x 20 s, 100a 15 sec intervals earthing resistance; less than 100 ? optional specifications field indicator: built in transmitter case, class 1.5, 0 to 100% linear scale or actual-value scale detector stand: for installing detector at water bottom; 304 stainless steel, approx. 1.8 kg characteristics accuracy: 0.5% max.(under standard conditions) sensitivty: 0.05% max. allowable over-pressure: 150% of measuring range detector transmitter level (input pressure) pressure receiving diaphragm silicon diaphragm, diffusion type strain gage mesauring circuit voltage change zero and span adjusting circuit conversion circuit (damping adjusy circuit) arrester output current resistance change atmospheric pressure
outline diagram (unit:mm)
fqk example of configuration exter connection diagram related devices opener distributor ordering information 1. measuring object of application 2. product name 3. code symbols 4. measuring range 5. special specifications requirement 6. other necessary items *asterisked items; non standard o+ o e + check terminals load 0 to 550 ? hollow cable to detector 24v dc information in this catalog is subject to change without notice. printed in japan head office 6-17, sanbancho, chiyoda-ku, tokyo 102-0075, japan http://www.fesys.co.jp/eng sales 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 caution on safety *before using this product, be sure to read its instruction manual in advance.
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