WADECO offers a line of single point level detectors for less demanding
applications. But don't think that means that these units can't do the
job. They are handy, inexpensive devices that can handle a myriad of level
detection applications. The instruments are ruggedly constructed.
Their patented technology means they are unaffected by heavy dust, airborne
particles, smoke, vapor, flames, rain and snow.
They require no contact with the target and therefore there is virtually no wear
and tear and zero maintenance. And the units have no moving parts.
The standard model (MWS-ST/SR-11)
GENERAL
In the pursuit of excellence, WADECO's
latest Microwave Level Switch, model number MWS-ST/SR-11, has an operating range of
up to 100m. It incorporates two decades of experience and refined microwave
engineering techniques. The result is a high quality, reliable sensor for
non-contact single point level detection.
The MWS-ST/SR type Single
Point Level Switch consists of a transmitter (MWS-ST) and a receiver (MWS-SR),
installed face to face. The transmitter emits a microwave beam which is received
by the receiver: an output relay is released when the beam is obstructed.
This microwave switch is
best suited for level sensing in harsh environments and such locations where the
sensing surfaces are likely to become dirty or covered with ash, dust or other
material buildup. The ability of microwaves to penetrate such substances on the
sensing surfaces makes this type of sensor of the best choice for single point
level detection.
Highly reliable and zero
maintenance, this sensor is an ideal replacement for contact type sensors such
as paddle and float switches, capacitance sensors and tuning forks.
COMMON APPLICATIONS
Some of the more common
applications for this sensor include:
Refuse in waste disposal/garbage bins.
Minerals/ore/granules/grain in dry bulk
hoppers
Liquid storage tanks,
Ash/slag levels in incinerators,
Hot product bunkers,
Vehicle position detection,
Plugged chute detection,
Material flow control in feeder chutes.
SPECIAL FEATURES
UNAFFECTED BY ADVERSE CONDITIONS
Microwaves are unaffected by
temperature, flames, heavy vapor/smoke, airborne particles or dirt buildup
on the antenna head
Designed for industrial use
NON-CONTACT, NONINVASIVE & NON-INTRUSIVE
All WADECO's Microwave Level Sensors are
non-contact, which means longer life span
Noninvasive mounting is possible by
installing detecting windows on either side of the vessel. The windows
should be made of a nonconductive material, such as glass, ceramic or
plastic, through which microwaves easily pass
SOLID STATE RELIABILITY
No moving parts means no mechanical
failure.
Low maintenance
Increased life span.
HIGH ADAPTABILITY
Sensors may be fitted with a variety of
standard flanges, waveguide extensions, stainless steel sensing heads
and other accessories to allow for use in high temperature/high pressure
and other such adverse environments
Power supply may be modified upon
request (i.e. AC 100V/110V/200V/230/240V, DC 24V )
COMPACT, PORTABLE, SIMPLE TO INSTALL &
OPERATE
Transmitter and receiver operate
independent of each other with built-in amplifiers, thus eliminating the
need to connect the transmitter and receiver to a separate controller
The MWS-ST/SR-2 is the 'Deluxe' version of the
MWS-ST/SR-11 type level switch. Loaded with extra features such as a 15 LED
indicator array on the receiver (shown above) for simple, once-touch, visual
sensitivity adjustment, this sensor is without doubt the best of its kind ever
developed.
The MWS-ST/SR-2 type microwave sensor is a level switch consisting of a
transmitter (MWS-ST-2) and a receiver (MWS-SR-2) installed face-to-face. The
transmitter emits a continuous, low power microwave beam towards the receiver
and an output relay is released when the beam is obstructed.
The sensor has wide application across all areas of
industry where highly reliable, non-contact level detection is required.
The sensor is generally used for process control by monitoring presence/absence
of product, flow/no flow conditions and point level detection in bins and silos.
The sensor may also be used as a proximity switch for detection of vehicles such
as dump trucks and rail cars.
COMMON APPLICATIONS
Some of the more common
applications for this sensor include:
Refuse in waste disposal/garbage bins.
Minerals/ore/granules/grain in dry bulk
hoppers
Liquid storage tanks,
Ash/slag levels in incinerators,
Hot product bunkers,
Vehicle position detection,
Plugged chute detection,
Material flow control in feeder chutes.
STANDARD FEATURES
100m Range with heterodyne detection
Approx. 100m range with a Ø27mm antenna, thanks to the Heterodyne detection
method.
High penetration
Easily penetrates process buildup on antenna, firebrick, refractory etc., thanks
to the increased operating range.
Unaffected by adverse environments
The sensor is unaffected by surface contaminants, flames, steam, vapor or
airborne particles.
Simple beam alignment
Easy initial beam alignment at installation, thanks to the wide beam angle.
Selectable detection mode
Either broken beam (BLOCK) or unbroken beam (UNBLOCK) detection method may be
selected.
On delay time rheostat
On delay time, adjustable 0.1~10secs., prevents instantaneous detection of
falling material whist filling.
DELUXE FEATURES
15 LED indicator bank
A 15 LED indicator array displays the received power level and the
sensitivity-set-point, allowing for visual sensitivity adjustment and
maintenance.
No set-to-set interference Four channels are available, selectable by rotary switch, eliminating
set-to-set interference.
Analog output (optional)
The received power level may be output as a 4 ~ 20mA analog signal.
Inspection window (optional)
The received power level and the sensitivity-set-point are easily seen, without
removing the controller cover.
High speed static relay (optional)
5msec response time static relay
