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Single Point Level Sensor
General
MWS-ST/SR-2 type microwave sensor is a level switch which consists of a transmitter and a receiver, installed face to face. It comes with four channels to allow for installation of multiple sets in close proximity.
The transmitter transmits microwaves toward the receiver and an output relay in the receiver is released when the beam is obstructed.
Harsh environments may result in the buildup of contaminants on the sensing surfaces, however, the sensor easily penetrates this buildup, thanks to the high penetrability of microwaves.
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 whilst filling.
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.
Specifications
| Transmitter | Receiver | |
| Type |
MWS-ST-2
|
MWS-SR-2
|
|---|---|---|
| Power Supply |
AC100~120V or AC200~240V ±10%, 50/60Hz
|
|
| Power consumption |
2VA
|
2VA
|
| Operating distance |
Less than 80m
|
|
| Frequency and transmission power |
24GHz approx. Less than 10mW
|
|
