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IMKO Trime-GW, Operating Instructions Manual

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IMKO Trime-GW Operating Instructions Manual Download Page 9

 

 

 

1.4

 

Instrumentation 

Figure 1: 

The TRIME

®

-GW components 

 

The TRIME

®

-GW system comprises the actual measurement transformer in a aluminium die-cast 

casing and the measuring probe that is connected to a coaxial cable over 2.5 m long. A display 
unit that can include the product selector-switch is connected to present the readings.  

Also available as an optional extra is the connection to a controller, a PLC, a PC or a line printer. 

_____________________________________________________________________________ 

9 

Summary of Contents for Trime-GW

Page 1: ...I publik TECH_MAN TRIME GW english GW MAN_e Temperatur_Vers2_6 doc ...

Page 2: ...2 2 Temperature compensation 4 1 2 3 The analogue output 5 1 2 4 Error display and error messages 5 1 3 Configuration 6 1 3 1 Product selection switch 6 1 3 2 Offset correction 6 1 3 3 Averaging time 7 1 3 4 Calibration and temperature compensation exchange 8 1 4 Instrumentation 9 1 5 Connections 10 1 5 1 Connector for strip terminals 10 1 5 2 The probe connector Probe 10 1 5 3 The configuration c...

Page 3: ... systems in an intermittent flow of material 23 4 1 1 Behaviour upon detection of air around the probe rods 23 4 1 2 Control via the internal time constants Queue FillingTime and Queue DischargeTime 23 4 1 3 A side effect when using the time constants Queue FillingTime and Queue DischargeTime 24 4 1 4 Setting Queue FillingTime 24 4 1 5 Control via an external digital input signal HaltM 25 4 1 6 El...

Page 4: ...penetrates a corn volume of 1 2 dm3 You thus not only obtain data about the moisture close to the surface such as with the infra red method but also the water content of the unground whole corn Complex and fault prone bypass constructions as required by the disproportionately expensive microwave method or transmissive infra red method can be dispensed with when using TRIME systems The modular tech...

Page 5: ...at is permitted to appear in operation is error no 66 It appears when the probe is not immersed in grain The display instruments show occurring faults as EE E or as values above 100 on the display panel dependent on the display type When a line printer is connected the fault is indicated by a line at the upper limit or above 100 To distinguish the type of fault the display instrument or the line p...

Page 6: ...he probe and compare the value of the TRIME GW with the result of your reference instrument Example The TRIME GW shows an value of 18 0 the reference instrument shows an value of 15 0 so you have to change the switch setting from initial setting 8 to the new switch setting B The here shown values are for the use with the standard calibration set for the measurement in grain for use with maize whea...

Page 7: ...ction values greater than 1 or intermediate values not shown in the table the process can be repeated a number of times A shifting of 0 5 can for example be achieved by 0 2 0 3 1 3 3 Averaging time The TRIME GW detects a new reading every half second and at the same intervals and via the analogue port outputs the appropriate mean value of the readings spanning a predetermined period The averaging ...

Page 8: ...oved the value currently set at the product selection is adopted by the instrument If the plug is removed when the switch is on 0 the internal setting remains un altered 1 3 4 Calibration and temperature compensation exchange The calibration for all 15 positions of the product selector switch can also be replaced This is however only necessary for special materials It can be done simply by inserti...

Page 9: ...nd the measuring probe that is connected to a coaxial cable over 2 5 m long A display unit that can include the product selector switch is connected to present the readings Also available as an optional extra is the connection to a controller a PLC a PC or a line printer _____________________________________________________________________________ 9 ...

Page 10: ... selector switch Binary digit 2 3 most significant bit 10 Ana GW Positive pole analogue output 0 4 20mA 11 Ana GW Negative pole analogue output 0 4 20mA 12 Halt M Input signal to stop the measurement 1 5 2 The probe connector Probe A dust and splashproof Binder connector for connecting the coaxial cable to the measuring pro be Only the probe calibrated for this instrument can be connected The numb...

Page 11: ... con nector RS232 connector Pin 1 N C 2 TxD 3 RS GND 4 RxD 12 pin connector male see detailed pin assign ment on page 16 Grounding IMP Bus connector Pin 1 Vs 2 R T 3 0V 4 COM _____________________________________________________________________________ 11 ...

Page 12: ...has been specially designed for use in areas where probe prongs cannot be in serted into the produce to be measured The measuring electrodes in this probe are sunk into a rectangular plastic panel This enables it to be fitted in such a way that it practically becomes a single entity with the vessel walls without any protruding elements Figure 3 TRIME GS1 Probes and cables from different instrument...

Page 13: ...es above 120 C occur In continuous flow dryers the best place for optimum regulation is at the end of the drying zone Regulation can of course be further improved by installing additional probes in the drying zone and at the end of the cooling zone The final moisture content at the end of the drying proc ess can be best monitored when a probe is fitted at the discharge point as well grain flow gra...

Page 14: ...e 2 2 Instrument installation The TRIME GW must be installed in the vicinity of the probe as the length of the probe cable is only 2 5 m for technical reasons The temperature of the surroundings should however not ex ceed 60 C ideal outgoing air end external wall of dryer The instrument can be mounted at a suitable point with screws through the two diagonally opposed holes in the casing An alumini...

Page 15: ...osis can be realised later on too by connecting a conversion module SM 23U 2 3 1 1 Integration into the existing system electronics Instead of implementing the TRIME GW independently for monitoring purposes it can also be integrated into existing systems For example a programmable logical controller PLC can ex tract the readings from the current output 0 4 20mA The function of the product selector...

Page 16: ...or at TRIME GW case Vs red 0V brown R T green COM blue Ana purple Ana white green S2 grey SW pink S3 black S0 yellow S1 white 15 8 6 J dtp_prod trimegw an2xgw Englisch Neu blaues Gehäuse cdr HALT M 1 Vs red 2 R T green 3 0V brown 4 COM blue 5 SW pink 6 S0 yellow 7 S1 white 8 S2 grey 9 S3 black 10 Ana purple 11 Ana white green 12 HALT M white yellow line configuration 12 or 18 wire Power supply 24V...

Page 17: ... of measurement Bulk density of the grain Type of grain product As soon as one of these parameters changes another adjustment must be chosen using the product selector switch The setting only has to be adjusted during operation when the product changes be cause the influence of the location remains constant and the bulk density of a given product remains more or less constant as well 3 2 1 Adjustm...

Page 18: ...pects The TRIME GW measures the average value continuously over a volume of 1 2 litres In moving grain the measurement volume acquired in the averaging time increases many times over It there fore requires a lot of time and effort to check this very representative value with a reference instrument that shows a sample quantity in the millilitre range There are also factors that can affect measure m...

Page 19: ... ideally every 15 minutes The TRIME GW reading and the selected switch position are to be noted simultaneously with every extracted sample This is compared with the appropriate offline determined reference value which is also to be noted As soon as the moisture is near the target moisture the product selector switch should be set to the best possible value which is the nearest to the reference val...

Page 20: ...hat the measurements become of real interest and can be used for the adjustment process Analysis can start as soon as about 10 to 20 measurements are available in the range from 12 to 18 The following table shows that the best setting for the product selector switch is 7 Table 6 Reference measurement TRIME GW Level 1 TRIME GW deviation 17 9 24 6 1 17 3 17 6 8 17 8 17 3 8 17 1 16 8 8 16 8 16 2 8 16...

Page 21: ...ontinuous monitoring and recording during grain delivery with protocol print out log issue Networking via PC via RS232 V24 interface for processing the acquired data in a grain moisture management system Integration into existing control panels or systems via standard analogue interfaces 0 20 mA or 4 20mA Central Module SM23U In line measurement of grain moisture during the drying process directly...

Page 22: ...sults in better quality control and enhances transparency 3 3 2 Manual control of the grain dryer In the case of manual or semi automatic dryer control systems using the TRIME TRIME GW in conjunction with a display unit can significantly improve drying results Connecting a line printer or a PC allows in addition the progression of drying to be documented and provides further potential for optimisi...

Page 23: ...on the display unit as E EE or 166 0 depending on the model Requiring special attention is the case where the periods in which the probe s field of measurement volume is only partially filled with the subject material i e when the fill level passes through the pro be s field of measurement during filling or discharge During these periods the device would record an excessively low reading because a...

Page 24: ...individual past readings where required demands that a current individual reading must first of all be temporarily stored until it becomes clear whether it is to be dis carded or is to contribute to forming the mean value The analogue or digital via PC output reading is therefore a glimpse into the past under normal operation the shift Queue DischargeTime is a matter of seconds In the transi tion ...

Page 25: ...ector 4 1 6 Electrical specification of the input signal HaltM HaltM In The signal for halting the measurement process HaltM is transmitted from the PLC or fill level detec tor etc to pin 12 white yellow and looped from there through all the connected measuring trans ducers thus making it available at each one The digital input directly to the TRIME GW measurement transducer s 12 pin flanged bushi...

Page 26: ...ime Permissible tolerance for test measurements Calibration medi um Air 11 0 0 5 Dry glass beads 12 7 0 2 4 2 3 Preparatory measures The dry glass beads and probe required for the basis calibration must themselves be around room temperature 18 24 C 4 2 4 The procedure using the configuration plug TRIME GW basis calibration 1 To set the first reference value air the probe must be positioned in such...

Page 27: ...ly one offset the slope remains un changed In other words the measurement value has been corrected only by a single additive con stant positive or negative the sensitivity remains unchanged so the scale of the deviation can differ depending on the moisture range in which the measurement is being taken The main factor influencing the offset is a differing length of the probe lead The main factor in...

Page 28: ...mensions connecting plug screw connector block power supply analogue output 0 4 20mA product selector switch IMP232 network bus Dimensions 160 x 100 x 81 mm ________________________________________________________________________________ 28 ...

Page 29: ...erial Measurement transformer temperature range 10 60 C extended range on request Probe temperature range 0 127 C temporarily up to 150 C Measuring period interval floating average with adjustable time interval 0 5s 20 min Interface IMP232 MICRONET and RS232 V24 Analogue output 0 or 4 20 mA 0 100 gravimetric moisture max load 300 Cable length of probe Standard 2 5m Housing protection Aluminium die...

Page 30: ..._____________ Product ___________________ Plant ___________________ Place ___________________ Date Time Reference value of the extracted sam ple TRIME GW reading Position of the product selector switch Comments ________________________________________________________________________________ 30 ...

Page 31: ...Notes _________________________________________________________________________________ 31 ...

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