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When the HART Communicator 
is connected to the transmitter 
and turned on, the first screen 
that is seen by the user is the root 
menu screen.  If the transmitter is 
configured as Level Only or Level 
plus Temperature, the screen to 
the left shows the information 
displayed to the user.

However if the transmitter is 
configured as Level plus Interface 
or Level plus Interface plus 
Temperature and Interface has 
been selected as the Primary 
Variable (Interface controls the 
current output), the screen to 
the left shows the information 
displayed to the user.

When the user selects the top 
menu entry on the root menu, 
Device setup, by using the right 
arrow, the next screen displays 
five menu selections available to 
the user.  Each of these menu 
selections will provide detailed 
information about a specific portion 
of the transmitter as detailed in the 
following sections.  

If the user selects the Process 
variables menu from the Device 
setup screen, the next screen 
displays the current values for all 
of the dynamic variables.  If the 
transmitter is not configured for 
Interface, the entry “Interf” is not 
displayed.  If the transmitter is not 
configured for temperature, the 
entry “Temper” is not displayed.

If the user selects Diag/Service 
menu from the Device setup 
screen, the next screen displays 
further menu selections to the user.  
These selections will be presented 
in more detail in the section titled 
Diagnostics and Service following 
this Overview.

If the user selects Basic setup from 
the Device setup screen, the next 
screen has a mixture of further 
menu selections and detailed 
information.  This screen displays 
the name of the variable that is 
controlling the output current (PV), 
the tag and the Alarm type. In 
addition this screen presents the 
procedure to select the Primary 
variable (PV) if the transmitter is 
configured with both Level and 
Interface.  It also displays the 
menu that will allow the user to 
change the range values.  The 
procedure used to select the PV 
and perform the re-ranging of the 
transmitter will be presented in 
more detail in the section titled 
Basic Setup.  

If the user selects Detailed setup 
from the Device setup screen, the 
next screen displays further menu 
selections to the user.  These 
selections will be presented in 
more detail in the section titled 
Detailed Setup

Finally, if the user selects Review 
from the Device setup screen, a 
series of screens can be accessed 
that displays the value of each of 
the parameters of the transmitter. 
The user may select PREV or 
NEXT to continue with the list or 
EXIT to return to the Device setup 
screen.  As the user scrolls through 
the list the only way to end this 
series of screens is to select EXIT 
since the list is a continuous loop 
through the parameters.

The user accesses this screen 
by selecting Diag/Service from 
the Device setup screen.  There 
are to further menu selections, 
Diagnostics and Calibration, and 
two procedures, Loop test and 
Restore Defaults that the user may 
select from this screen.

If the user selects Diagnostics 
from the Diag/Service screen, he 
is given the choice of viewing the 
complete diagnostics status by 
selecting Operation Status or Cal 
Status, only viewing the off-normal 
status by selecting View status and 
if a maintenance status bit is set, to 
reset that bit as shown below.

Diagnostics and Service

HART Communicator Overview

This section presents the major screen selections available to the 
user.  The HART Communicator screens are shown on the left and 
a description of the screen and user information is given on the 
right.

8.1 HART Protocol Option Information

8

Summary of Contents for LTM-300 Series

Page 1: ...81 488 0788 FAX 281 488 7080 EMAIL magtech isemagtech com www isemagtech com LTM 300 Series Magnetostrictive Level Transmitter Instruction Operation Manual 3902 Magnolia Road Pearland Texas 77584 Jan...

Page 2: ...r Installation 3 3 1 Standalone Transmitter Installation 3 3 2 Recommended Wiring Single Loop 4 Section 4 Speci cations Page 4 0 Transmitter Electrical Speci cations 4 4 1 Transmitter Sensor Tube 4 Se...

Page 3: ...hange and continuously activates the sensor in the tube The electronics in the housing process the changing signal and update an analog 4 20 mA output This analog output is precisely proportional to t...

Page 4: ...e base to resolve sub microsecond timing increments The binary number equivalent to the microseconds of the echo travel time is written to an output D A Converter and subsequently converted to a 4 20...

Page 5: ...ectronicshousingmountedatthebottomofthegageforeasyaccess THIS MUST BE SPECIFIED AT TIME OF PURCHASE Installation Note European The cable entry devices and blanking elements of unused apertures shall b...

Page 6: ...gurations A single output version with only one variable that will output a 4 20 mA signal for level The second con guration is a transmitter tted with a second oat to provide a digital output for in...

Page 7: ...elect Data not required Span Trim Move the oat to the 20mA mark 100 on the probe Using the arrow buttons input the correct distance from the zero point and then Select Level O set Enter the desired va...

Page 8: ...ion Problems 6 2 Magnetic Interface 6 3Troubleshooting Power Supply Problems Never move a magnet in a perpendicular motion from along the sensor tube This will always leave a residual eld in the waveg...

Page 9: ...as this could leave magnetic indentation in the sensor wire The LTM 300 level transmitter has an inductor located inside the bulkhead of the sensor tube During operation of the transmitter this induc...

Page 10: ...d the Alarm type In addition this screen presents the procedure to select the Primary variable PV if the transmitter is con gured with both Level and Interface It also displays the menu that will allo...

Page 11: ...t are not normal Any status items not reported are within the normal range of operation or calibration The HART Communicator issues a command to receive the results of the transmitter diagnostics Duri...

Page 12: ...xited if the user selects End The example shows the user selection 4mA The user must press ENTER before the procedure continues When the user selects the Loop test option the HART Communicator display...

Page 13: ...output to 4 000mA the user is to enter the reference meter reading For example if the meter actually reads 4 234mA that value is input with the keypad The user must press ENTER when the current value...

Page 14: ...matic control After the user presses OK the HART Communicator returns to the Calibration screen The HART Communicator is now at the starting screen for the Zero Level Trim Full Level Trim Starting at...

Page 15: ...now be returned to automatic control After the user presses OK the HART Communicator returns to the Calibration screen The HART Communicator is now at the starting screen for the Full Level Trim Zero...

Page 16: ...ed Once the measurement is stable the procedure will continue without user intervention The HART communicator will then send the command to the transmitter to calculate the new Temperature zero calibr...

Page 17: ...t Value for 4mA and 20mA by Keypad If you desire to change the Level value at which the Current output is 4mA and 20mA when the Level is the selected Primary Variable or change the Interface value at...

Page 18: ...g the edit box to continue with the reranging of the transmitter On returning to the Keypad rerange screen the values shown for LRV and URV are the changes that the user has made The user should check...

Page 19: ...pper range value getting an update of the digital reading from the transmitter or leaving the 20mA range point as it was If the user accepts the measurement value as the 20mA loop current point the HA...

Page 20: ...h is set in the factory when the unit is prepared for shipment The probe length is used as a reference for a number of diagnostics fuctions as well as setting the URL and LRL shown on the Keypad reran...

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