The Interface Solution Experts
25
THZ
2
&
TDZ
2
Programmable Smart HART
Temperature Transmitter and Display
3 Output Trim–
Output trimming increases the
accuracy of your instrument by calibrating its analog
output to the device that is receiving the output.
This ensures that the instrument is being correctly
interpreted.
Connect a multimeter to your THZ
2
or TDZ
2
output to
indicate present output reading.
Setting fld device to Output Zero
will be displayed on
your communicator. Select
OK
if ready to proceed.
When prompted, enter the value displayed on the
multimeter into your communciator. Press
Enter
. If
your output matches the value on the multimeter,
select
Yes
.
Next,
Setting fld dev to Out Full
is displayed on your
communicator. Select
OK
if ready to proceed. When
prompted, enter the value displayed on the multimeter
into your communciator. Press
Enter
. If your output
matches the value on the multimeter, select
Yes
.
Note:
Do not perform the Output Trim Reset function
unless you want to disregard your trim values and
return to the manufacturer’s values.
HART Output
Use this portion of the menu to configure the Poll
Address, Burst mode and Burst Option.
1 Poll addr–
The HART polling address is represented
by a number between 0 and 15. This identifies the
transmitter on the loop. In a loop with only one HART
slave on it, this address should be 0. In a multidrop
loop, any of these numbers can be used.
Note:
If the polling address is set to 0, the transmitter is
automatically set to analog mode. Multiple units on
the same bus must have different addresses.
2 Burst mode–
This function allows you to achieve a
higher data rate. When enabled (On), your instrument
repeatedly transmits a data message as if it were
being commanded to do so. The Master device
receives the data more frequently than if it were only
polling the transmitter, achieving a higher data trasnfer
rate.
Note:
For Fisher-Rosemount HART Communicator, Model
275, you must enable the Burst Mode and send the
configuration to the unit before selecting the Burst
Option.
3 Burst option–
Once
Burst Mode
is enabled, choose
which value is transmitted–
PV, % range/current
or
Process vars/crnt
(Process variables/current).
E. Configure Dev Info
This menu allows you to configure identification
parameters for your THZ
2
or TDZ
2
.
1 Tag–
Place a unique label that corresponds to your
instruments location or specific usage (8 characters
maximum).
2 Descriptor–
Place text that is used as a description
of how the instrument is being used (16 characters,
maximum).
3 Message–
Place additional information that may
be helpful in describing the instrument or its use (32
characters, maximum).
4 Date–
Store a date that corresponds to specific
system function, i.e. instrument configuration date,
calibration due date, preventive maintenence
schedule, etc.
5 Final asmbly num–
You may enter a number that is
used for identification purposes, and is associated with
the field device (8 characters, maximum).
6 Dev id–
This is a read-only value that uniquely
identifies the field device when combined with the
manufacturer identification and device type.
7 Hardware rev–
This value corresponds to the
revision of the electronics hardware of the field device.
F. Configure Display
This menu only applies to the TDZ
2
as it is used to
configure the manner in which the display is viewed.
1 Mode–
Select whether your variable is displayed as
a PV, current value or a percent.
2 Decimal Places–
Choose the resolution of your
value. Select one, two or three decimal places. You
may also choose
Auto
to allow the instrument to
automatically select the decimal placement.
3 Custom Label–
Enable or disable custom label for
use on the display.
