Thiết Bị Đo Mức Nước Model FQK, EDS7-65d

 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

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



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



Material (detector):
         Pressure receiving diaphragm;  SUS 316L
         Outer tube; SUS 316
         Hollow cable; PVC or PE covering

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)


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)

OPERATING PRINCIPLE OF DETECTOR

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