2. 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 principle
for high ease of use and low cost.
transmitted pulse
reflection echo
The efector gwr
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 pulse
hits 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 principle
in GWR technology.
3. efector gwr with microwave technology.
The new quality standard in level monitoring.
efector gwr reli-
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 industrial
applications
Coolant monitoring Part cleaning monitoring
High performance –
attractive price.
efector gwr pro-
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
gwr is much more
user-friendly than
conventional mea-
suring systems
using microwave
technology.
performance
GWR
level meter
price
float switch
vibration fork
efector gwr
mechanical
switch
efector gwr
4. The efector gwr is the best alternative
to mechanical float switches because
of its display and its two freely pro-
grammable switching outputs. High
operational reliability: Even if there
are deposits or the first indication of
foam formation, the sensor operation
is largely reliable.
Reliable in operation.
The parameters such as switch-on
point and switch-off point point are
set 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-friendly
parameter setting.
The efector gwr is directly mounted
into the tank via a process connection
or via a flange plate. It is electrically
connected to the controller via an
M12 connector. Very easy:
If needed, the probe can be cut to
length by the user.
Easy installation.
0 20 40 60 80 100
cost comparison: mechanical float switch with cleaning intervals
versus the maintenance-free efector gwr level sensor
cost share [%]
cost unit
cost installation
cost level display
cost cleaning intervals
unforeseen cost / standstill
In industrial part
washer applica-
tions the efector
gwr reliably
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.
PhotobycourtesyofDürrEcocleanGroup
5. Probes / accessories
Description Order
no.
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 LED
Switching status LED
Housing materials
Connection
200
Operating voltage [V] 18...30 DC
< 80
-1...4
3
Dielectric constant medium > 20
Power-on
delay time [s]
± 1.5
± 0.5
Switch point accuracy [cm]
Repeatability [cm]
0...60
0...80
IP 67 III
2 x green
2 x yellow
2 x green
4 x yellow
2 x green
1 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 output
4...20 mA / 0...10 V
Order no. LR7000
30
63
M12x1
G 43
8
I1
L
50
57AI2
32
1
76
87
6
32
Sockets
Description Order
no.
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 display
2 = 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
6. ifm electronic –
Over 70 locations worldwide – at a glance at
www.ifm.com
ifmarticleno.7511280·Wereservetherighttomaketechnicalalterationswithoutpriornotice.·PrintedinGermanyonnon-chlorinebleachedpaper.02/08
visit our website:
www.ifm.com
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