Welcome to Hydronix Defining the Standard for Microwave Moisture - PowerPoint PPT Presentation

Welcome to Hydronix Defining the Standard for Microwave Moisture Measurement www.hydronix.com 1

An Introduction to Hydronix • Hydronix design, manufacture and sell microwave moisture measurement and control equipment • Industry leader of digital sensors, controls and service • First company to develop microwave technique in 1982 • Focus on sensor technology and service • Over 65,000 installations world wide • Global network of trained resellers that speak your language • Continually investing in research • Customer Focus – Your satisfaction, guaranteed! www.hydronix.com 2

A Sensor for All Materials • Hydronix has a range of sensors specifically designed to measure moisture in most types of flowing materials • Exterior made from stainless steel to withstand the harshest environments • Easy to install in a variety of different locations • A choice of measurement modes for optimising sensor performance in a variety of applications and materials • Not affected by dust or colour www.hydronix.com 3

Moisture Control - Benefits • Cost Savings / Increased Profitability • Reduced material and/or product wastage • Increased production • Water content control • Time Savings • Automation usually increases production rates • Reduced laboratory time • Feed-in data • Consistent Production • Quality Control • On-line, automated moisture control • Easy adjustment to varying moisture contents www.hydronix.com 4

Typical Moisture Variations • Fine Sand 0-20% • Coarse Sand 0-12% • 6mm Aggregate 0-10% • 20mm Aggregate 0-4% • Pulverised Fuel Ash 0-33% • Clay Tile Mixes 0-20% • Animal Feed 0-20% • Grain 5-30% • Your Material ?? www.hydronix.com 5

Equipment Overview • Moisture Sensors for Flowing Materials Hydro-Probe Hydro-Probe XT Sensor for use in flowing mineral type Sensor for use in flowing organic type applications such as concrete, applications such as animal feed, aggregates and asphalt grain and biomass materials www.hydronix.com 6

Equipment Overview • Moisture Sensors for Mixers, Conveyors, Chutes and Ducting Hydro-Mix Flush mounted Sensor Hydro-Probe Orbiter Rotating Sensor for Mixers www.hydronix.com 7

Equipment Overview • Digital sensor for measuring moisture or dissolved solids in liquids Hydro-Probe SE www.hydronix.com 8

Equipment Overview • • Moisture Display Water Control Hydro-Control VI Hydro-View IV Display unit for Calibration and Precision Water Controller Configuration of Hydronix Sensors www.hydronix.com 9

Supported By . . . • Optional comprehensive 4 year warranty • Immediate exchange units • Full service commitment from Hydronix • Local support in your own language www.hydronix.com 10

Hydronix Sensor Technology www.hydronix.com 11

Hydronix Sensor Technology • • Robust, reliable, simple Temperature output available • • Linear output On-board functionality & alarms • • Digitally, factory configured to be Configurable input / outputs identical • Power +15Vdc to +30Vdc • 0-20mA, 0-10V or 4-20mA linear • outputs Automatic temperature compensation • RS485/232, USB & Ethernet • Network up to 16 sensors • 25 readings per second • Contact Sensors www.hydronix.com 12

Water Molecule • Water is a polarised molecule and will align itself with an electromagnetic field. • It stores energy as it aligns itself and also dissipates energy as it interferes with adjacent molecules. • This combined effect is known as Relative Permittivity and in water this is very high compared with most other materials www.hydronix.com 13

How Microwave Technology Works • Hydronix measures the dielectric properties of materials • Resonant frequency shifts have a linear relationship with moisture variation in many non-metallic materials For ease of use: f air = 0 unscaled f water = 100 unscaled www.hydronix.com 14

Microwave Resonator – The Resonant Frequency Response • Old legacy “ Analogue ” sensors measure only at f1 and output A1, A2, A3 and A4 – a non-linear response • Hydronix digital sensors output f1 to f4 Normalised so that f1=0 and f4=100 “ unscaled ” units – a linear response f1 = air f2 = dry material f3 = wet material f4 = water Water Relative Permittivity = 80 Vacuum / Air Relative Permittivity = 1 0 Unscaled 100 Unscaled www.hydronix.com 15

Calibration www.hydronix.com 16

The Theoretical Calibration Line • Every material has a theoretically perfect calibration line. By calibrating the sensor we are trying to identify this perfect line. If correctly calibrated with 2 points (A and B below) it is possible to determine any exact moisture value along the line from any unscaled value measured by the sensor. Theoretical Calibration Line 8 7 Moisture of the Material % 67 unscaled = 6.0% moisture 6 B 5% 5 4% 4 37 unscaled = 3% moisture 3 A 2 1 47 57 0 0 10 20 30 40 50 60 70 80 90 Unscaled Sensor Output www.hydronix.com 17

Possible Error – Not Enough Spread • It is recommended that calibration points are taken over the full working moisture range of the material. If points are taken too close together the actual calibration line calculated may not lie on the on top of the theoretically correct line as shown below. If the working range Theoretical Calibration Line drops:- Actual Calibration Line 8 From 2.5 to 4.0% 7 Moisture of the Material % To 1.0 to 3.5% 6 this may result in an error 5 of approximately 1% Error < 0.3% 4 moisture. B 3 Error < 0.3% 2 A 1% in 1m 3 of concrete is approximately 20 litres of 1 water. 0 0 10 20 30 40 50 60 70 80 90 Unscaled Sensor Output www.hydronix.com 18

Possible Error – Good Spread • With two points taken over a much wider moisture range the adverse effects of the same 0.3% error are dramatically reduced. Theoretical Calibration Line Actual Calibration Line 8 7 Moisture of the Material % 6 B Error < 0.3% 5 4 3 2 Error < 0.3% 1 A 0 0 10 20 30 40 50 60 70 80 90 Unscaled Sensor Output www.hydronix.com 19

Calibration Data – Good or Bad? • A good spread is essential (2-3%) Good Moisture Calibration Data 12 10 Bake-Out Moisture % • Representative Sampling 8 6 • 4 Accurate moisture content determination 2 0 0 20 40 60 80 100 120 Sensor Unscaled Output Poor Moisture Calibration Data Poor Moisture Calibration Data 12 12 10 10 Bake-Out Moisture % Bake-Out Moisture % 8 8 6 6 4 4 2 2 0 0 0 20 40 60 80 100 0 20 40 60 80 100 Sensor Unscaled Output Sensor Unscaled Output www.hydronix.com 20

Storing Calibration Data • There are two ways of storing the material calibration data • Firstly - In the Sensor Advantages • Calibration using Hydro-Com • Control system does not need modification to calibrate the sensor • Ability to use Hydronix known calibration data for different materials • Calibrations can be transferred between sensors Calibration coefficients stored in sensor (A, B, C, SSD) using Hydro-Com Moisture = Unscaled (U/S) B x (U/S)+C-SSD Control system Analogue output represents true moisture % www.hydronix.com 21

Storing Calibration Data • Secondly - In the Control System Advantages • Direct calibration without the need for an additional computer or RS485 adapter • No need to learn how to use additional software • If it is necessary to replace the sensor, a replacement can be connected and valid results obtained immediately without the need to connect to a PC to update the material calibration • Calibrations can be switched between sensors easily Unscaled converted to moisture True moisture Unscaled www.hydronix.com 22

System Accuracy • Resolution of electronics +/- 0.13 unscaled units (0-100 range) (equivalent to +/- 0.04% moisture in sand) • System accuracy in practice, depends on: • Sampling of material being measured • Accuracy of laboratory test • In practice, for sand and aggregates +/- 0.2% moisture (effectively…. as accurately as the user can calibrate) • System accuracy for measurement in mixers: Within +/- 0.1% www.hydronix.com 23

Reliable Repeatability • Results of 10 sets of 3 batches 12 10 8 Series1 Series2 Series3 % Moisture 6 Series4 Series5 Series6 Series7 4 Series8 Series9 Series10 2 0 TIME 104 125 146 167 188 209 230 251 272 293 314 335 356 377 398 419 440 461 482 503 524 545 566 587 608 629 650 671 20 41 62 83 -2 Time seconds www.hydronix.com 24

Hydro-Probe Moisture Sensor for Flowing Material www.hydronix.com 25

Hydro-Probe • Easy to use • Extremely robust – stainless steel body and ceramic sensing face • Ideal for use under or inside silos, on conveyors or anywhere in your process where there is a consistent, smooth flow of material • Shape designed to achieve best results • Temperature rated 0-60 ° C (32-140 ° F) • Quick and flexible connectivity • Unscaled units allow immediate replacement without recalibrating • The Hydro-Probe has become the industry standard for moisture measurement equipment www.hydronix.com 26

Hydro-Probe Positioning Flow A or Flow B should be in line with the material flow Typical Conveyor Installation Flow B Material Flow Flow A 30 º Typical hopper or silo installations www.hydronix.com 27