AM3

Click here to view (PDF 773kb)

The Dryer Master® Automatic Mini Moisture Manager (AM3) is a control system using state logic. It is a versatile tool based on a high performance ¼ DIN Micro PLC and Dryer Master’s® long time industry proven Moisture Sensor which is easy to calibrate against a bench top manual tester.

Moisture control is achieved through user changeable high, low and target moisture trigger points with corresponding user setable discharge rate and response time settings. With occasional tweaking of the settings the system is capable of achieving very good moisture control.

The system will interface with most modern variable frequency drives directly and usually only requires a small isolation interface to operate non isolated SCR Controllers.

The system can provide printed records of operation as well as store data to a removable memory module for retrieval to a computer and be connected to a plant wide automation system.

The AM3, Automatic Mini Moisture Manager is a continuous online moisture measurement and moisture control solution by Dryer Master®. This product is ideal for measuring product moisture at the exit of a grain dryer. This system is a state machine and control is achieved by switching between 3 user settable discharge speed set points triggered by user settable moisture targets. This is a system indented for more hands on operations as the speed set points and moisture targets will need periodic adjustments to maintain optimum operation.

Features:

• User Defined Automatic Dryer Control
• ¼ DIN Size Display
• Waterproof Front Panel
• Printing Option Available
• Record Keeping Option
• Multi-Product Capable (except AM3R)

Specifications:

Operating Range, Display

• Temperature, 0C to +50C, 32F to +125F
• Relative humidity, 5% to 95% non condensing
• Nema 4

Operating Range, Moisture Sensor

• Temperature, -25C to +60C, -13F to +140F
• Relative Humidity, 5% to 95% non condensing
• Nema 4x enclosure
• Explosion proof and intrinsically safe models available
• Moisture Range, 0.25% to 45%, product dependent
• Product Temperature range -20C to +90C, -4F to +109F

Power Requirements

• 20 to 30 Volts DC-150mA for Display Unit
• 20 to 30 Volts DC-20mA for the moisture sensor
• The moisture sensor and the display unit can be powered from the same power supply
• One 4 wire instrument cable connects the display to the moisture sensor

Communication

• RS232 Port for serial printer
• 0-10 VDC, 0-20mA Moisture output to Automation system
• 0-10 VDC, 0-20mA Output to speed controller
• Micro SD Memory Module Slot (data storage)
• Local Alarm Output, 24 VDC 200mA
• Remote Alarm Output, 24 VDC 200mA
• Calibration in Progress, 24 VDC 200mA
• Local Remote Control Output 24 VDC 200mA