EDS7-3I Datasheet, PDF (1/4 Pages) Fuji Electric – LIQUID LEVEL TRANSMITTER (FLOAT TYPE)

LIQUID LEVEL TRANSMITTER (FLOAT TYPE)
DATA SHEET
FNF
This is a liquid level transmitter utilizing an induction
potentiometer.
The vertical displacement of a flat on a liquid surface in
an open tan k is conveyed by a strip of stainless steel wire
rope to the transmitter body, and inputted as a rotating angle
to the induction potentiometer which transmits a signal
current of 4 to 20mA DC proportionate to the displacement
of the liquid level.
FEATURES
1. High reliability
Use of a contactless induction potentiometer means a
long life and high reliability of the instrument.
2. Various specifications available
The transmitter can be provided with intrinsically safe
explosionproofing, various materials for its components,
an arrester, an alarm unit plus other specs.
3. The operating principle and structure of the transmitter
are simplified which enables easy handling, maintenance
and inspection.
SPECIFICATIONS
Measuring range: 0 to 0.5……40m
(Refer to standard measuring ranges)
Indicator:
Digital type (4 digits)
Allowance:
± 1.0% or ± 0.5% on request
Output signal: 4 to 20mA DC
Ripple content: 1.5% p-p (at approx. 25kHz)
Allowable load resistance:
0 to 550Ω (at 24V DC)
Power supply: 13 to 33V DC
(26V DC or less with intrinsically safe
explosionproofing)
(27V DC or less with arrester)
100V/24V ± 10% , AC 50/60Hz
(see "Example of configuration")
Wiring method: 2-wire type
Ambient temperature:
–30 to +80°C
(but not usable in freezing condition)
50°C max. with intrinsically safe
explosionproofing
60°C max. with arrester
Ambient humidity: Less than 95% RH
Liquid temperature: Less than 45°C
(when float material is PVC-vinyl
chloride-)
Materials:
Float; Hard PVC or SUS304 (stainless
steel)
Rope: Teflon coating on stainless steel
wire
Counterweight; Iron piece coated with
zinc metallikon or SUS304
Instrument body; Aluminum alloy
Conduit connection: G3/4
Case:
Splash-proof type (JIS C 0920)
Arrester:
Built in on request
Explosionproof structure: Intrinsically safe explosion-
proofing i3nG5
Mass {weight}: Approx. 10.5kg
(excluding float and counterweight)
External dimensions (H × W × D):
Approx. 320 × 346 × 218mm
Finish color:
Silver (melamine paint); may be provided
with acid and alkaliproof treatment
Optional attachment: Alarm unit (limit switch)
(Alarm unit can't be installed with
intrinsically safe explosionproof)
structure);
Contact capacity
250V AC 5A
230/115V DC 0.2/0.4A
N.O.-1a- contact
3 pieces are available in the
transmitter for upper limit and
lower limit
EDS7-3i
Date July. 18, 2006