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User Manual

Grain moisture meter – model

G939

Version: 1.00.000

Date: 08/2013

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Summary of Contents for G939

Page 1: ...User Manual Grain moisture meter model G939 Version 1 00 000 Date 08 2013...

Page 2: ......

Page 3: ...al digits 2 4 Adjusting the print mode 2 5 Adjusting number of report copies 2 6 Adjusting the contrast 2 7 Unlocking chamber door 2 8 Uploading Internet equation 2 9 Uploading standard equation 2 10...

Page 4: ...btained at Gehaka laboratories using samples collected from several areas of the plantation Using the standard oven method as a reference measurement scales for each product were developed These curve...

Page 5: ...nload the sample After a few seconds you will have the moisture and temperature measurement all this shown on an easy to read 16 character 2 line alphanumeric LCD display in Portuguese G939 has also a...

Page 6: ...ment results Silent low consumption operation 4 DRAWER Receives the cereal sample from the chamber after the measurement was performed The meter unloads automatically 5 PLASTIC SCOOP Used for pouring...

Page 7: ...PORT CONNECTOR Data output for printer or PC 14 HARD LOCK When connected to RS232 serial output it releases access to Configuration function where G939 configurations will be made Adjusting a value In...

Page 8: ...serted in the connector It is not necessary to verify the mains voltage the power supply is FULL RANGE not requiring mains selection We also do not recommend the use of voltage stabilizers When the co...

Page 9: ...measure the moisture and using the plastic scoop slowly pour the cereal sample into the loading hopper until the 100 is shown on the display a beep will be heard indicating the sample weight is corre...

Page 10: ...will wait until there is a thermal balance between both of them This could introduce a delay for the temperature measurement to be made This way we improve the meter precision by measuring the actual...

Page 11: ...Grain Moisture Meter Model G939 I 11 1 1 Diagram of the functions A diagram follows indicating all G939 meter functions and it will help to understand the operation...

Page 12: ...e is not a new checking When you exit the function it will be locked again G939 settings and Equations can only be changed with the presence of the Hard Lock key this ensures improved security This fu...

Page 13: ...number of elements to be used for making the average of readings used to calculate the final value of moisture percent We can select between 1 and 5 elements To adjust the number of Elements to be Av...

Page 14: ...ting is one decimal digit To adjust the number of decimal digits 1 Go to Configuration and depress YES you have to put the Hard Lock in the serial output 2 Go to function 2 3 Adjusting the Number of D...

Page 15: ...Serial No 12345678901234 Current Product Wheat Equation Version 20111101 Sample 4 Sample Temp 27 7 C Meter Temp 27 5 C Sample Weight 141 5 g Moisture 12 42 Signature 13 00 Responsible person 18 01 13...

Page 16: ...e Temperature Instrument Temperature Scale _ A Capacitance Product Name Equation Version Instrument Model Firmware Version Hardware Version Serial number Time Date CR LFCR LF To perform the print mode...

Page 17: ...is the maximum contrast This value will be stored in the G939 memory To adjust the Contrast 1 Go to Configuration and depress YES you have to put the Hard Lock in the serial output 2 Go to function 2...

Page 18: ...9 chamber could be damaged To open the door and performing the cleaning 1 Go to Configuration and depress YES you have to put the Hard Lock in the serial output 2 Go to function 2 6 Unlocking Chamber...

Page 19: ...to keep you informed about new updates including improvements in G939 firmware Selecting which products will be sampled by G939 With this the time for changing scale is reduced thus making the operat...

Page 20: ...C 3 Connect the Serial Cable supplied with the G939 to the USB port do not still connect to the G939 4 Wait for the driver installation this could take up to 5 minutes depending on the Internet bandwi...

Page 21: ...n order to download the most updated curves To upload Standard Equations 1 Connect the G939 2 Go to Configuration and depress YES you have to put the Hard Lock in the serial output 3 Go to 2 9 Uploadi...

Page 22: ...t 3 Go to 2 10 Auto Self Report function and depress YES 4 Wait for the Report to be printed This report provides the Service with data for assessing whether the G939 is operating properly after havin...

Page 23: ...Grain Moisture Meter Model G939 I 23...

Page 24: ...ES 4 Use the Right hand Left hand ARROWS to select the required language 5 Depress YES to complete NOTE After selected the language run the function 2 9 Uploading standard equations to get the product...

Page 25: ...ation of DB9 Female Connector pins In case G939 is not transmitting data and the PC is not receiving the information observe the following items in your PC 1 Verify whether the system is selected to t...

Page 26: ...inting warranty 1 The G939 model when it comes with a built in thermal printer is supplied with thermal paper rolls 2 Remove the beginning of the roll of paper that is stuck glued rip and pull out to...

Page 27: ...ough rice soybean bran etc the Chamber may accumulate residues especially when such cereals are very dry with a low relative humidity Never use compressed air for cleaning the chamber and the loading...

Page 28: ...le to detect any failure showing an error message on the display In case of any failure we recommend to return the G939 to Gehaka for the required meter repair and recalibration work Do not forget tha...

Page 29: ...in the instrument send the instrument to Gehaka Service Department Error 5 Low Instrum Temp Error 6 High Instrum Temp Indicates that the INSTRUMENT temperature is either below 0 C or above 50 C This i...

Page 30: ...nd creating a new Equation using the resources in the website www moisturetester com br See item 2 8 Uploading Internet Equation for more details of the procedure Error 12 Access Locked This message i...

Page 31: ...r this reason the secondary method was developed so that using the cereal electrical properties quick measurements can be made Although many research works have been carried out in the field of electr...

Page 32: ...n trying to obtain average values for calibrating a moisture meter to be used throughout the country In the operation of every moisture meter the duly specified mechanical operations shall be performe...

Page 33: ...Serial RS232C Bidirectional Printer OPTIONAL Printing Method Thermal Density 203dpi x 406dpi Paper White Thermal Paper 56 1 mm Width Max Roll Diameter 40 mm Printing Life 10 years Gehaka Paper Speed 5...

Page 34: ...34 I Grain Moisture Meter Model G939 Available scales in this version and operating ranges for each Product...

Page 35: ...caused by fire accident modification carelessness improper use repair or maintenance without authorization of the manufacturer or even by negligence malpractice and imprudence in the use Gehaka does...

Page 36: ...Notes...

Page 37: ...Notes...

Page 38: ...Notes...

Page 39: ......

Page 40: ...aka com br www gehaka com br Agricultural Equipment Line Portable Grain Moisture Tester G600i Portable Grain Moisture and Impurity Analyzer G650i Bench Grain Moisture Meter G810 Bench Grain Moisture M...

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