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Lev
elsensors
www.ifm.c
om/gwr
Innovation onthe right wavelength.
Level measurementin compact tanks usingmicrowave technology.
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clear space around the sensor 5 cm
inactive measuring range 4 cm
blocking distance
clear space
evaluation
HFThe new efector gwr:
Measuring levels using the
innovative measuring principle
of the GWR technology
(Guided Wave Radar).
Increase plant uptime:The robust and compact sensor
is maintenance and wear free.
Deposits and light foam forma-
tion are largely suppressed.
Fast set-up thanks to ease of use
and simple mounting. Variabel:
The probe can be cut to length,
if needed.
4-digit alphanumeric LED display.
Two or four programmable
switch points with hysteresis or
window function.
Medium temperature up to 80 C.
Price and performance
are convincing.
The innovative measuring principlefor high ease of use and low cost.
transmitted pulse
reflection echo
The efectorgwr
operates to the
principle of
guided wave radar
and measures the
level using electro-
magnetic pulses in
the nanosecond
range. The pulses
are transmitted by
the sensor head
and guided along
the probe. If the
microwave pulsehits the medium
to be detected, it
is reflected, guid-
ed back to the
sensor and evalua-
ted. The time be-
tween transmitting
and receiving the
pulse directly re-
lates to the travel-
led distance and
the current level.
Echo time of flight principlein GWR technology.
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efector gwrwith microwave technology.The new quality standard in level monitoring.
efectorgwrreli-
ably monitors the
level of coolants
for machine tools
even in difficult
applications such
as grey cast iron
processing.
Build-up on the
stainless steel
probe caused by
metal particles or
grind swarf do not
affect operation.
For industrialapplications
Coolant monitoring Part cleaning monitoring
High performance attractive price.
efectorgwrpro-
vides the advan-
tages of an innova-
tive measurement
technology at an
extremely attrac-
tive price.
It is a realistic
alternative to sim-
ple vibration forks
and float switches,
the disadvantages
of which are, for
example, a high
level of mainte-
nance and limited
life due to wear.
Thanks to its ease
of installation and
use the efector
gwris much more
user-friendly than
conventional mea-
suring systems
using microwave
technology.
perfo
rmance
GWRlevel meter
price
float switchvibration fork
efector gwr
mechanicalswitch
efector gwr
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The efectorgwris the best alternativeto mechanical float switches becauseof its display and its two freely pro-grammable switching outputs. Highoperational reliability: Even if thereare deposits or the first indication offoam formation, the sensor operationis largely reliable.
Reliable in operation.
The parameters such as switch-onpoint and switch-off point point areset by simply pressing a pushbutton.The current level and the set parame-ters are visible at a glance on the 4-
digit alphanumeric display.
User-friendlyparameter setting.
The efectorgwris directly mountedinto the tank via a process connectionor via a flange plate. It is electricallyconnected to the controller via anM12 connector. Very easy:If needed, the probe can be cut tolength by the user.
Easy installation.
20 40 60 80 100
comparison: mechanical float switch with cleaning intervalsus the maintenance-free efector gwrlevel sensor
cost share [%]
cost unit
cost installation
cost level display
cost cleaning intervals
unforeseen cost / standstill
In industrial part
washer applica-
tions the efector
gwrreliably
detects the level
of aqueous
cleaning agents at
medium tempera-
tures up to 80 C.
The comparison
clearly shows the
economic benefit:Using the efector
gwr, costs can be
reduced by up to
70 % compared to
mechanical moni-
toring systems.
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Probes / accessories
Description Orderno.
Probe 240 mm, stainless steel (303S22) E43203
Probe 700 mm, stainless steel (303S22) E43205
Probe 450 mm, stainless steel (303S22) E43204
Probe 1200 mm, stainless steel (303S22) E43208
Probe 1000 mm, stainless steel (303S22) E43207
Probe 1600 mm, stainless steel (303S22) E43210
Probe 1400 mm, stainless steel (303S22) E43209
Flange plate LR 65-80 E43202
Flange plate LR 73-90 E43201
Flange plate LR 73-90 NPT E43206
Application
Electrical design
Connection
aqueous media, coolants, cleaning agents, water
DC PNP
4-wire
DC PNP
8-wire
DC PNP
4-wire
Technical data level sensor LR
Output
Current rating [mA]
Current consumption [mA]
Max. tank pressure [bar]
Medium temperature [C]
Function display
Display unit LEDSwitching status LED
Housing materials
Connection
200
Operating voltage [V] 18...30 DC
< 80
-1...4
3
Dielectric constant medium > 20
Power-ondelay time [s]
1.5
0.5
Switch point accuracy [cm]
Repeatability [cm]
0...60
0...80
IP 67 III
2 x green2 x yellow
2 x green4 x yellow
2 x green1 x yellow
stainless steel (303S22), PTFE, NBR
4-digit alphanumeric display
Operating temperature [C]
M12 connector to EN 61076-2-101, gold-plated contacts
Protection
FKM, NBR, PBT, PC, TPE-V, stainless steel (304S15), PTFE, PEI
Measured values, programming
Materials(wetted parts)
2 x normally closed /normally open progr.
4 x normally closed /normally open progr.
1 x normally closed /normally open progr.1 x analogue output4...20 mA / 0...10 V
Order no. LR7000
30
63
M12x1
G 43
8I1
L
50
57
A
I2
32
1
76
87
6
32
Sockets
Description Orderno.
2 m PUR, M12 angled, without LED, 4-pole EVC004
5 m PUR, M12 angled, without LED, 4-pole EVC005
2 m PUR, M12 angled, without LED, 8-pole E11231
5 m PUR, M12 angled, without LED, 8-pole E11232
1 = 4-digit alphanumeric display2 = LEDs (display unit / switching status)3 = Programming buttons
Process connection G 3/4
LR7300
NPT 3/4
LR8000
G 3/4
LR8300
NPT 3/4
LR3000
G 3/4
LR3300
NPT 3/4
LR7000, LR8000, LR3000
You can find the current prices on our website at www.ifm.com
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ifm electronic
Over 70 locations worldwide at a glance atwww.ifm.com
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7511280Wereservetherighttomaketechnicalalterationswithoutpriornotice.PrintedinGermanyo
nnon-chlorinebleachedpaper.02/08
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