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IMKO TRIME-PICO 32, Manual

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IMKO TRIME-PICO 32 Manual Download Page 13

2017-05-30 

Manual TRIME_PICO64-32  Version 2_0 

 

 

 

 

Page 13 

3.5 

Datalogging with Differential Analog Inputs 

 

Using a datalogger with a common ground will produce considerable problems, due to earth loops. 
The higher the length of the cable the higher the problems with earth loops. Earth loops can produce 
considerable fluctuations at the measurement signal 0 to 1V ! 

 

 

 

 

 

 

IMKO recommends to use a datalogger with differential inputs as shown in the following picture. With 
differential inputs the problems with earth loops are eliminated. 

 

 

 

Summary of Contents for TRIME-PICO 32

Page 1: ...Manual TRIME PICO 64 32...

Page 2: ...MKO instrument Should you have any queries please don t hesitate to contact your local distributor or address directly to IMKO IMKO Micromodultechnik GmbH Am Reutgraben 2 D 76275 Ettlingen Germany Pho...

Page 3: ...em no 300081 10 3 4 Accessories 11 3 4 1 E Box Extension Box Item no 300092 11 3 4 2 C Box Current Box Item no 300091 11 3 4 3 SM USB Serial Interface Module 12 3 4 4 PICO BT Bluetooth Module 12 3 5 D...

Page 4: ...e IMP Bus to the SM USB Module 25 11 1 1 RS485 or IMP Bus Configuration and Probe Scan 26 11 2 Scan of connected PICO probes on the RS485 or IMP Bus 27 11 3 Configuration of Measure Mode 27 11 4 Analo...

Page 5: ...pecific operation mode for your application can be found below PLEASE NOTE Analogue dataloggers require differential inputs 1 1 1 Operation mode A Bus communication TRIME PICO64 32 systems can be conn...

Page 6: ...able as analogue signal In standby until the next measurement is executed the probe consumes 8 10mA 12V DC if the communica tion is set to standby can be changed in PICO CONFIG software 2 3mA 12V DC B...

Page 7: ...easuring volume is particularly suitable for applications in heterogeneous and skeletal media Burying capability for both horizontal and vertical orientation 2 2 TRIME PICO32 For in situ monitoring of...

Page 8: ...nd the rods as the highest measuring sensitivity is directly around them Air pockets around the probe rods can reduce the measured moisture reading Where saturated soils are in volved water filled air...

Page 9: ...2017 05 30 Manual TRIME_PICO64 32 Version 2_0 Page 9 3 TRIME PICO64 32 Versions...

Page 10: ...MP Bus Black GND SDI 12 GND Red Vs SDI 12 Vs Yellow RS485B SDI 12 Data if SDI 12 version Brown RS485A 3 2 PICO IMP Bus cable 5m 4 pin female connector Item no 300080 Pin layout Pin 1 Vs Pin 2 R T IMP...

Page 11: ...Receive Transmit on IMP Bus 3 4 Accessories 3 4 1 E Box Extension Box Item no 300092 For extending the cable length of the TRIME PICO with DataLogger cable see 3 1 up to 35m with 0 1V output signal 3...

Page 12: ...offers 2 Sensor Interfaces IMP Bus IMKO specific and RS485 industrial standard One sensor can be powered out of the USB Interface if multiple sensors are connected external power supply is required 3...

Page 13: ...derable problems due to earth loops The higher the length of the cable the higher the problems with earth loops Earth loops can produce considerable fluctuations at the measurement signal 0 to 1V IMKO...

Page 14: ...he soil for optimum temperature measurement 4 2 Installation equipment 4 2 1 Preparation set for TRIME PICO64 Item no 302035 For preboring the soil prior to probe insertion 1 x spike 1 x core drill 1...

Page 15: ...on of soil which would impair measurement accuracy damaging the probe s rods or rod tips A defective PVC rod coating or a blank rod is sensitive to elec tromagnetic charge and may destroy the electron...

Page 16: ...easons the calculated cable length should be reduced by 10 to obtain a realistic value In order to increase the maximum possible cable length several solutions are feasible 1 Using cables with larger...

Page 17: ...c calibration of your TRIME sensor yourself If defective probe rods must be changed you can perform the required basic calibration your self The calibration set cannot be used for establishing a mater...

Page 18: ...perature range between 20 C and 25 Attention Water dissolves Na2O and K2O from glass which causes a rising pH value and higher electrical conductivity New glass beads have to be washed intensively wit...

Page 19: ...with 50 clay and 10 organic with just one calibration The only factor is the offset caused by the differing soil density which can be compensated by a formula which IMKO offers at its homepage in an...

Page 20: ...17 05 2 42 2 42 0 1 1 30675 12 12 17 05 1 21 1 21 0 1 40675 12 12 17 05 0 00 DEFAULT 0 1 1 50675 12 12 17 05 1 21 1 21 0 2 1 60675 12 12 17 05 2 42 2 42 0 3 1 70675 12 12 17 05 3 64 3 64 0 5 1 90675 1...

Page 21: ...TE Basic calibration must be performed after exchanging the rods Failure to do so will cause a deviation of 2 or more 1 Prepare probe body seals rods 2 Insert the seals into the bore holes 3 Push the...

Page 22: ...may enter the IMP Bus transmission lines Longer lines increase the risk of lightning strikes Theoretically max imum protection is achieved by installation of a lightning protection module SM Blitz in...

Page 23: ...bes to standard PC s PDA s and other computers or the SDI12 interface for direct connection to SDI12 dataloggers 10 1 PICO probes connected to a PC under Windows With IMKO s small software package TRI...

Page 24: ...Manual TRIME_PICO64 32 Version 2_0 2017 05 30 Page 24 10 2 PICO probes connected to a SDI12 Datalogger...

Page 25: ...hen using a dual USB connector on the PC it is possible to use the power supply for the PICO probe directly from the USB port of the PC without the use of the external AC adapter How to start with the...

Page 26: ...ial Port you can go into the properties menu where you see connection set tings with Advanced button the COM port number can be switched to a free number After changing the COMx port settings PICO CON...

Page 27: ...s the RS485 bus can be scanned for attached PICO probes takes max 30 seconds PICO CONFIG reports founded PICO probes with its serial number in the window Probe List 11 3 Configuration of Measure Mode...

Page 28: ...tputs The conductivity range can be selected depending on the specific soil which is measured 0 20 dS m should be selected for soils with a very high salinity content 11 5 Simulate Analog Output By pr...

Page 29: ...sted with the PICO probe by activating the button Set Active Calib Furthermore the individual calibration curves CAL1 to Cal15 can be adapted or modified with the calibration coefficients see Chapter...

Page 30: ...tive moisture value The other values like Count ASICCount etc are for special use By clicking Save the recorded data is saved in a text file in the following path PICO CONFIG exe Pfad MD Dateiname The...

Page 31: ...ence set point B tp 625ps in wet glass beads The PICO probe head has to be completely covered with wet glass beads The second set point can be activated with the mouse pointer by clicking to No 2 By a...

Page 32: ...and in the window Material Property Calibration by selecting the desired calibration curve Cal1 Cal15 and with using the button Set Active Calib The finally desired and possibly altered calibration cu...

Page 33: ...2017 05 30 Manual TRIME_PICO64 32 Version 2_0 Page 33...

Page 34: ...Manual TRIME_PICO64 32 Version 2_0 2017 05 30 Page 34...

Page 35: ...e g 190 7 where a tp of 190ps corresponds to a mois ture content of 7 The gravimetric or volumetric moisture content of the material e g 7 has to be deter mined with laboratory measurement methods ov...

Page 36: ...n EXCEL software tool from IMKO can be used 1 Download the Excel Sheet SONO_NonlinearCalibration_Calculation from IMKO s Homepage under Support Software 2 Enter the TP values with the respective refer...

Page 37: ...lead to significant deviations TRIME probes use coated and therefore isolated rods which guarantee the non appearance of gal vanic accumulation along the rods allowing for long run installations over...

Page 38: ...conductivity To work around this the analysis on agricultural and horticultural soils has been carried out by mixing a volume of soil and a volume of water and measur ing the EC on the suspension or...

Page 39: ...ter Conductivity or Salt Content of Soils The possible salt stress depends on soil type and plant species and can be roughly classified Slight salinization 1 3g of salt per liter Average salinity 3 5g...

Page 40: ...ing on the salt content How to determine the salt content With both parameters the moisture value X axis and ECTRIME Y axis it is possible to determine the salt content in sand With a moisture content...

Page 41: ...different salt contents The PICO32 determines different ECTRIME conductivities in different soils at one mois ture level The moisture range with the best resolution for the ECTRIME measurement for a...

Page 42: ...g by previous punctures Moisten the soil more as homogeneous as possible with the pore water solution ECw 4dS m to eg 5 moisture Again compact the soil in a plastic bowl so that it largely corresponds...

Page 43: ...asic Balancing Operate correctly and try it again 0603 0608 0610 0611 Communication or protocol errors in Basic Balancing Restart PICO and PICO CONFIG 0701 0702 Read file errors in Material Property C...

Page 44: ...ower off power on PICO and try it again Otherwise contact IMKO 60 Power voltage is too low Check power voltage of PICO it is minimal 6V 100 TDR measurement parameter is incorrectly set or the material...

Page 45: ...ng systems Read the manual before connecting and operating a sensor or measuring system The manual is part of the product and must be kept close to the sensor or measuring system Impairment of safety...

Page 46: ...al accessories or replacement please contact the manufacturer Do not use the meter in following case if the measuring instrument sensor plug in power supply or accessories are damaged the sensor or th...

Page 47: ...2017 05 30 Manual TRIME_PICO64 32 Version 2_0 Page 47 Notes...

Page 48: ...Precise Moisture Measurement in hydrology forestry agriculture environmental and earth science civil engineering as well as individual applications...

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