RADARTRON 2250D NEW FEATURES

WHAT'S NEW ABOUT RADARTRON 2250D? Scale-Tron's well known RadarTron microwave moisture sensor has been upgraded in several important ways. View short video and read on: Digital bidirectional communication through both RS232 and RS485 connections, to transmit moisture readings and allow setup and calibration. RS 232 allows easy connection to most computers and PLCs while RS485 can communicate reliably up to 4000 ft, eliminating the need for extra repeaters. Any number of sensors can share the same RS485 line in daisy-chain fashion, to a single computer or PLC port. An optional module converts this back to either RS232 or USB for connection to the computer. The digital interface is fully compatible with Command Alkon and other batch controllers. Totally new electronics with digital processing, allowing the filtering and averaging parameters to be adjusted when necessary for special applications. Shorter body, sealed construction and smaller mounting flange, allow installation in crowded spaces while still providing the 'reach' that is sometimes needed to get into the flow region Analog output; both 0-20 and 4-20 mA are selectable. If 0 - 10 volt output is desired, a resistor can be connected at the receiving end to convert the current signal into a voltage signal, giving higher accuracy than with a standard voltage signal. Temperature sensor situated near the faceplate gathers an accurate average temperature of the material surrounding the faceplate. This is used to compensate for the small change in water's dielectric constant with temperature, improving accuracy over the temperature range, as well as being available through the digital output for use by the control system. Low material level output; as well as freezing the moisture readings to avoid spoiled batches when the sensor is uncovered, 2250D also allows this output to be used as an external alarm. The junction box is available with a relay for this purpose. Multiple material calibration; up to10 separate material calibrations are available, for use in different materials. This feature allows 2250D to be used in those awkward applications where different materials are used from time to time in a single bin. 24 volt power; 2250D will run from the batching controller or any inexpensive unregulated power supply between 11 and 30 volts DC. CALIBRATION SYSTEM Calibration is a tedious chore that has to be accomplished. The 2250D sensor is precalibrated with 'average sand' in our test lab. Because materials differ, however, even in building sand, each sensor should be checked after installation and trimmed if not up to par. RadarTron software version 2.0 and later. If you are using the digital interface as your main connection to a PC computer controller, all you need for calibration (and local moisture display) is the Windows software utility provided with the sensor. If you are using the RS232 or analog connection, or are connecting to a non-PC system, such as a PLC, use the Programming Cable to connect to a Windows computer, laptop or PDA. Software versions 1.6, 1.7 can be upgraded free of charge by returning them to Scale-Tron, giving more features and better performance. Software version 2.0 automatically finds sensors and lists them, allowing you to select one for setup or calibration. Once on-line, the setup and calibration menu guides you through the steps. You need several readings along with the true moisture values obtained from oven-dry or bakeout tests, over a wider range of moisture than will be used in practice. Once these values are entered, calibration is a click away. For multiple materials, this process is repeated for each material. Yes, it's tedious, but anyone who tells you that they have a simpler system is just not telling the truth. There is no substitute for proper calibration; no system will perform accurately without it. View video. Monitor moisture levels. With version 2.0 software you can record readings at pre-set intervals over as long a period as you choose. The readings are stored in an Excel-compatible file for your use in other applications. The next upgrade of software will include a trend-graph display for continuous process monitoring. NEW MIXTRON SENSOR Mixtron 2240D has also been updated and uses the same Windows software as 2250D. Compared with our previous analog Mixtron sensor, the digital Mixtron has signal averaging built in, with programmable parameters for unequalled accuracy in most mixers. General appearance, cables and connections are similar to RadarTron 2250D.
	Options for use with RadarTron 2250D
	Mounting flange Now priced separately, the flange mounts the sensor through a bin wall. Simple, quick and effective.
	Connecting cable Available in 10, 20 or 50 ft length, plugs into sensor, allowing it to be easily disconnected.
	Junction box Terminates connecting cable and allows easy connection to power source, analog and digital communication cables and programming cable if used.
	Sampling relay Connects to feed gate, conveyor etc. to enable the signal averaging function for best accuracy. Normally 110 volt coil for North America and 220/250 volt for export applications. Relay is replaceable, UL/CSA/CE.
	Bin low relay Gives dry contact output for connection to alarm circuit or PLC input, 24 to 250 volt, UL/CSA/CE.
	Alarm relays Two outputs connect to relays for use in continuous processes to give high and low moisture alarms
	Programming cable 10 ft cable with RS232 'D' style connector for PC computer; can be used for setup and calibration or permanently installed as the main RS232 communication link.
	Digital Display unit Unchanged from 1400C model, this display connects to the 4-20mA analog output to give a digital moisture display. Available as panel mount or in waterproof enclosure.
	RS485/USB converter For computers without RS232 ports, this converter connects directly into the USB port and automatically configures itself.
	"Glider" mount For use on conveyors or applications involving moving material. Call us for details.
	Power Supply Most batching systems provide the necessary 24 volt power. For systems without their own source however, the optional 24 volt power unit supplies up to ten 2250Ds

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