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Kobold NGM-HART, Operating Instructions Manual

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Kobold NGM-HART Operating Instructions Manual Download Page 12

Configuration Set NGM-HART 

page 12 

 

NGM-HART K05/0922 

5.3  Response Time  

 

BASIC CONFIGURATION

 

• Read out actual response time, by clicking on I9.  
 

Field G9 is showing the actual response time multiplied with 0,1ms. 

 
• Change actual response time within a range of 2 … 100 (0,2 … 10 sec) in field 
G8 and clicking on I8 “set response time”. 

 

Use high response times for storage tanks with slow level movements. Use low response 
times for buffer and process tanks.  

 

 
 
 

 

Verify changes by clicking again on I9 “get response time”  

 

Summary of Contents for NGM-HART

Page 1: ...Operating Instructions for Configuration Set HART Modem Model NGM HART...

Page 2: ...ed products can be improved and changed at any time without prior notice Copyright All rights reserved 1 Contents 1 Contents 2 2 Note 3 3 Instrument Inspection 3 4 Installation 4 4 1 Hard and Software...

Page 3: ...specifying the relevant invoice number and serial number If you wish the operating instructions can also be sent to you by post in paper form against an applicable postage fee The devices are only to...

Page 4: ...Windows 10 8 1 Server 2012 Server 2008 R2 7 Vista Server 2003 XP ME 98 Microsoft Excel version from 2007 32 Bit and 64 Bit version Excel Configuration Sheet NGM configuration tool LA V177 xls since 0...

Page 5: ...2 Electrical connection The supplied HART modem must be connected on the device side via a current loop resistor 250 Ohm in the scope of supply On the PC side is a normal USB connection required Figur...

Page 6: ...configuration of the NGM with a HART modem the baud rate of your USB communication must be reduced to 1200 bits s This is set to 9600Bit s in the standard If the parameter is not set no communication...

Page 7: ...22 page 7 4 3 1 Connection of a NGM Probe to a PC Check the COM port assignment of the PC to the USB HART modem with the Device Manager http www computerhope com issues ch000833 htm In this case COM p...

Page 8: ...the Excel file might help to activate the Macros 3 HOME 4 Enter the assigned COM port indicated at the device manager For the usage of the Excel tool a click on the necessary cell activates the commun...

Page 9: ...lue SEND button J2 in step 1 get serial number Macros are running OK status H2 disappears and reappears after serial number read out and shown in G2 If OK status does not reappear check the connection...

Page 10: ...n I6 and I7 With the command get lower upper range value the actual 4 20 mA values in mm are shown after the OK status disappeared and is visible again Change actual 4 20 mA settings by changing the v...

Page 11: ...Configuration Set NGM HART NGM HART K05 0922 page 11 Reference point 0 mm...

Page 12: ...is showing the actual response time multiplied with 0 1ms Change actual response time within a range of 2 100 0 2 10 sec in field G8 and clicking on I8 set response time Use high response times for s...

Page 13: ...output mode 0 nc normally closed 1 no normally open Once the probe is powered the switch output can be open or closed The standard switch output mode is set to normally closed as it would open at a po...

Page 14: ...reshold With the help of the thresholds a hysteresis can be programmed to avoid output switching at turbulent levels First the upper threshold must be passed to activate the output then the lower thre...

Page 15: ...s or ringing caused by the installation can be blocked Increase the value for cutting signals left to the dead band whose position is indicated by a green line Any signal left to the green line will n...

Page 16: ...ates the actual amplitude threshold Dynamic noise or ringing can be blocked if it is within the amplitude threshold band The level reflection should be always 1 3 bigger than the width of the amplitud...

Page 17: ...l disturbance scan signal status 00 off raw echo curve 01 disturbance signal active on top 10 disturbance signal active on top and bottom Change actual disturbance signal scan status in field G20 and...

Page 18: ...type status by clicking on I24 Field G24 indicates the actual probe type status 0 coaxial probe 1 single probe rod or rope Thresholds are adapted automatically by changing this parameter Change actual...

Page 19: ...robe Length BASIC CONFIGURATION Read out actual probe length by clicking on I26 Field G26 indicates the actual probe length in mm Change actual probe length in field G25 and click on I25 set probe len...

Page 20: ...2 5 4 6 Set Delivery Configuration BASIC CONFIGURATION Set actual parameters as delivery configuration by clicking on I27 Former delivery configuration parameters will be overwritten No reset to facto...

Page 21: ...guration BASIC CONFIGURATION Reset unit back to delivery configuration by clicking on I28 4 20mA response time switching mode and thresholds upper dead band amplitude threshold disturbance scan probe...

Page 22: ...tual level reading by clicking on I29 If you do not measure the current output in series with a Multimeter it is recommended to read out the level 3 5 times to recognize potential current fluctuations...

Page 23: ...tion Set NGM HART NGM HART K05 0922 page 23 5 4 9 Software Revision BASIC CONFIGURATION Get actual software revision by clicking on I30 You can get the actual softwaretool on our homepage https www ko...

Page 24: ...page 24 NGM HART K05 0922 5 4 10 Device Status BASIC CONFIGURATION Get actual devise status by clicking on I31 Important probe status information can be communicated Click on the small red upper righ...

Page 25: ...al data or also called echo curve by clicking on I32 Once the OK status in field H32 does not disappear anymore the echo curve can be visualized by clicking on worksheet SIGNAL Reading out the echo cu...

Page 26: ...signal range by entering values in field G33 34 and clicking on I33 34 Depending on the probe length the range within the echo curve in worksheet SIGNAL can be adapted A negative X1 range of 1000 is...

Page 27: ...echo curves every second for calculating the level The most important parameters 4 20mA dead band and amplitude threshold are visualized With the arrows up down the amplitude threshold can be positio...

Page 28: ...Configuration Set NGM HART page 28 NGM HART K05 0922 5 4 14 More Parameters ADVANCED CONFIGURATION Parameters within the worksheet ADVANCED CONFIGURATION are only recommended to change by experts...

Page 29: ...Coaxial Probe Nice reference reflection at the beginning Perfect coupling into the coaxial probe Positive end of probe reflection which corresponds to the physical end of probe Dead band parameter at...

Page 30: ...vel Coaxial Probe Stable reference reflection at the beginning Negative level reflection at 168mm No end of probe reflection as energy is completely reflected at water surface Dead band parameter at 3...

Page 31: ...at the beginning Strong positive impulse at the transition of coupling to the single rod Reflection can change with mounting conditions Positive end of probe reflection which corresponds to the physic...

Page 32: ...tion at the beginning Negative level reflection at 168mm No end of probe reflection as energy is completely reflected at water surface Positive coupling reflection in saturation as amplification facto...

Page 33: ...55 C Enclosure Polystyrene Connection to PC USB 1 1 B connector Cable to PC USB A B 1 8 m Connection to HART filed KLEPS 2 Spiral cable length 0 6 m 1 1 m Ingress protection IP 20 Electrical protectio...

Page 34: ...d international disposal regulations and environmental regulations Batteries Batteries containing pollutants are marked with a sign consisting of a crossed out garbage can and the chemical symbol Cd H...

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