WATER LEVEL TRANSMITTER DATA SHEET FQK This water level transmitter is used for measuring the level of clean water, sewage water, well, river, etc. The detector is placed on the bottom of the water, and the water head pressure acting on the pressure receiving diaphragm is detected, converted into a current signal and then transmitted to a receiving instrument via the connector terminal. FEATURES 1. Accuracy as high as ±0.2 % Excellent performance has been realized with a highly evaluated capacitance type silicon sensor and a microprocessor. 2. Powerful arrester built-in Both detector and connector terminal are equipped with a lightning arrester to secure reliable lightning protection. 3. Remotely adjustable This transmitter is remotely adjustable with a handheld communicator. SPECIFICATIONS <Functional specifications> Measurement item : Water level of clean water, sewage water, well, river, etc. (Note: Avoid a vicinity of chemical injection site.) Measuring range: 0 to 1.5 ... 13 m 0 to 10 ... 50 m Output: 4 to 20 mA DC Power supply: 24 V DC (10.5 to 32 V) Wiring system: 2-wire system Allowable load resistance: 0 to 600 Ω (at power supply of 24 V DC) Note: A load resistance of at least 250 Ω is required for communications with a hand-held communicator. Remote setting: Zero/span adjustments, range setting and damping setting (Settable with a hand-held communicator.) Communication line conditions (when using hand-held communicator): Line length; Max. 2 km Load resistance; 250 to 600 Ω Load capacity; 0.22 µF or less Load inductance; 3.3 mH or less Saturation output: Upper limit: 20.8 mA, lower limit: 3.8 mA DETECTOR CONNECTOR TERMINSL Damping: Time constant variable within 0 to 32 sec (Settable with a hand-held communicator.) Zero and span adjustments: Adjustable from connector terminal or remotely adjustable with hand-held communicator. Zero point shift: ±35% of maximum measuring range Span adjustable range: 10 to 100% of maximum measuring range (Measuring range must not be exceeded.) Liquid contacting temperature (detector): 0 to 50˚C Ambient temperature (connector terminal): -20 to +60˚C Storage temperature: -30 to +70˚C <Performance specifications> Accuracy rating: ±0.2% of measuring span Allowable overpressure: Up to 2 times of maximum measuring range Temperature effect: ±(0.3 + 0.2 × URL / X) % /30˚C URL; Upper range limit (13 or 50 m) X; Actual measuring span <Physical specifications> Material (detector): Pressure receiving diaphragm; SUS 316L Outer tube; SUS 316 Hollow cable; PVC or PE covering EDS7-65d Date Apr. 1, 2011 FQK Enclosure: Detector: IP68 The pressure detector of the type for sewage water is provided with a sludge protector. Connector terminal: JIS C0920 immersion-proof type Mass (weight) approx: Detector; 2 kg Connector terminal; 3.5 kg (excluding cable) Cable; 3 kg /10 m Mounting method: Detector; Suspended in water or placed at water bottom. Repeater; Mounted on 2B pipe or wall. Arrester: Built in both detector and connector terminal. Lightning resistance Detector: 10 kA, Repeater: 2500 A (8/20 µs) OPERATING PRINCIPLE OF DETECTOR To connector terminal DC 4∼20mA Hollow cable Hollow pipe Outer tube Power circuit Microprocessor Detection circuit <Optional specifications> Indicator (repeater): Analog indicator % scale or actual-value scale Detector stand: For installing detector at water bottom SUS 304 (φ267, φ180, φ95 ··· by order) Chain: SUS 316 (for hoisting the detector) Pressure sensor Pressure receiving diaphragm Water pressure SCOPE OF DELIVERY Transmitter (detector + connector terminal, with hollow cable and pipe mounting bracket) Detector stand and chain when specified at option, RELATED DEVICE Hand-held communicator (type FXW. Refer to EDS8-47.) SYSTEM CONFIGURATION (EXAMPLE) Water level transmitter Connector terminal DC 4∼20mA Distributor DC 1∼5V Hollow cable Power supply Detector 2 Receiving instrument CODE SYMBOLS 1 2 3 4 5 6 7 8 F QK 9 10 11 Description 3 Measuring range 0~1.5..........13m 0~10...........50m 1 2 Hollow cable length (m) 10 20 30 40 50 60 70 80 90 100 1 2 3 4 5 6 7 8 9 A Hollow cable material PVC (for general application) PE (for preventing corrosion) A B Indicator (repeater) None Analog indicator (% scale) Analog indicator (actual-value scale) Y A B Detector stand Without With (ø267) With (ø180) With (ø95) 0 1 2 3 Application General Sewage water (Sludge protection) 0 1 0 1 2 3 4 5 Select B for the 6th digit as hollow cable material Chain (Detector) Without With 10m With 20m With 30m With 40m With 50m EXTERNAL CONNECTION DIAGRAM Check terminals + --/CK-- CK + ORDERING INFORMATION 1. Product name 2. Type 3. Measuring range 3 FQK OUTLINE DIAGRAM (Unit: mm) MTG. PIPE JIS 50A (2B) CONNECTOR TERMINAL 225 163 WITH INDICATOR 100 47 U. BOLT (M8) 27 (27) 52.5 ø80 153 119 78 43 A CABLE CONN. 25 INDICATOR (OPTION) Chain (of specified length) CABLE 8 ø15 ø46 6 19 ø52 DETECTOR DETAIL A 381 303 303 G1/2 ø43 100 22 ZERO LEVEL With chain øD DETECTOR STAND 9th code øD 1 267 2 180 3 95