AquaSense 2280D is a moisture probe or sensor, for use in sand, powders and granulated materials.  Its hard ceramic faceplate is rugged and hard wearing, giving 10 to 20 years service in concrete applications.

AquaSense 2280D measures the moisture of sand and many other granulated or powdered products.  It communicates with a control system which corrects the dry material weight targets for batching.  Consequently it gives you constant yield, colour/texture and workability, as well as strength and durability.  For more general information on moisture measurement, see our range of Moisture Sensors.

Measuring range: 0 – 20% moisture, precalibrated for sand. Other ranges and materials on request.Can be calibrated for surface or total moisture, “wet” or “dry” calculation basis.
Material limits: From powder to ¼” granule size. Readings become more erratic as size increases.
Sensing volume: W=3″ X H=3″ X D=10″ at 2% moisture, to  D = 2″ at 10% moisture (in sand).
Analog output: 0-20mA, 4-20mA. 0-5V, 0-10V etc. by use of external resistor.
Digital RS232 & RS485 connection: Bidirectional, industry standard protocol and command structure supports up to 16 moisture probes on the same RS485 multi-drop line.
RS232/RS485 Display & setup: Windows software displays readings and allows access to setup and calibration menus.
Material calibration storage: Up to 10 separate sets of material calibration parameters per moisture probe/sensor.  These are stored internally and accessed by commands on the serial RS485 bus.
Power: 11 – 30VDC, 100mA max.
Sampling input: Dry contact or relay from feed gate signal to moisture probe. Optional replaceable relay in junction box.  Energizing the input starts the internal signal averaging, which proceeds until input is de-energized.
Bin low and alarm outputs: Three open collector transistors to drive relays or PLC inputs. Optional 110 – 140VAC 6A solid-state relay for Bin Low in junction box; other outputs require separate relays.
Temperature range: Sensor body temperature for full accuracy: 0-50°C (32-120°F).  Reduced Accuracy: 0-80°C (32-175°F)
Construction: 304 stainless steel body and flange with shatterproof extra hard alumina ceramic faceplate, 10 mm thickness.
Size: 3-1/2″ (89mm) diameter, 20″ (508mm) long with 6″ (152mm) adjustable flange for correct positioning of faceplate inside the bin or container.
Guarantee: 10 year guarantee on material and workmanship; return for replacement.