EDS7-64 Datasheet, PDF (1/4 Pages) Fuji Electric – ULTRASONIC LIQUID LEVEL METER

ULTRASONIC LIQUID LEVEL METER
DATA SHEET
FQH-2,FQG-2,FLY
An ultrasonic liquid level meter measures the liquid level
by the propagation time of the ultrasonic pulses emitted
out of the ultrasonic detector are reflected on the surface
of the measurement object and are received as echoes by
the detector again.
It provides high reliability and it permits easy installa-
tion, running and maintenance, as it does not make con-
tact with the measurement object and it is free of mechani-
cal moving parts.
It deals with uses of a broad range including water level
measurement of water, wastewater, tide level, rivers and
reservoirs and level measurement of highly viscous liquid
in chemical tanks, slurry agitation tanks, roll mills and food
tanks.
FEATURES
1. No liquid contact
Permits easy installation and maintenance.
2. Detector of waterproof structure and of excellent cor-
rosion resistance
It is of no problem against adhesion of water drops
and splashes, and it is optimum for wastewater, alkali,
acid and high viscosity liquid.
3. Not affected by fixed reflection noise
Not affected by obstacles such as projections of de-
tector mounting area, walls and ladders because of the
DGL (dynamic gain limit) function that automatically
learns the noise level at all times and masks noise so
that no noise is detected.
4. Minimum influence of electrical noise
Not affected by electrical noise or noise from agitating
blades, as such noise is largely reduced by statistical
processing.
5. Use of high gain amplifier
Permits use at a pump well involving scum that could
be hardly measured with conventional meters and also
at a place of large attenuation such as sludge storage
tank.
SPECIFICATIONS
Converter (Type: FQH)
Structure:
Material grade:
Coating color:
Accuracy:
Output:
IP65
Aluminum alloy
Blue (cover), silver (case)
± 1%/FS or better
4 to 20mA DC (insulated, load resistance
0 to 1kΩ)
Detector (FQG) Converter (FQH)
Display:
LCD display (16 characters, 2 lines, with
back light)
Level measured value (m, %), detector
peripheral temperature, ultrasonic wave
received signal intensity, etc. are dis-
played.
Dumping:
2 to 600 seconds (once every second)
Power failure recovery processing:
Memory backup with lithium cell (valid
for about 10 years)
Power supply: 100 to 240V AC, 50/60Hz or 20 to 30A
DC
Power consumption:
35VA or less (AC power supply)
12W or less (DC power supply)
Contact output: Upper limit and lower limit alarms, error
alarms, up to 8 points (optional), relay
contact output, contact capacity AC
250V, 5A, normally open contact
Working ambient temperature: -10 to50˚C
Working ambient humidity: 90% RH or less
External dimensions: H320 X W240 X D137mm
Mounting method: Wall surface mounting
Mass:
About 7 kg
Lightning measure:
Power supply, output signals and alarm
outputs are provided with arresters
Others:
Provided with self-diagnostic function
Detector (Type: FQG)
Structure:
IP67
Composition: With built-in preamplifier, transmitter and
EDS7-64
Date Mar. 10, 2003