EDS7-65D Datasheet, PDF (1/4 Pages) Fuji Electric – WATER LEVEL TRANSMITTER

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 hand-
held 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