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Reference Manual
IP2048/RM, Rev AA
Appendix F: Configuring Using HART
February 2015
F.3.32 Threshold 1 time (P043)
False echoes may occur close to the transmitter face. If they occur outside the Upper Blanking
distance (page 131), the false echo can be ignored by entering the echo size as a percentage and
a time (representing distance).
Enter the time (representing distance) into Threshold 1 Time (P043).
For example, 6 ms represents an approximate distance of 1 m, and 2 ms represents a distance of
approximately 1 ft.
See “Threshold 1 size (P048)” on page 138 for entering the echo size.
Note
See also “False echoes under certain ambient operating conditions” on page 62 for
additional information about adjusting the settings of parameters P043 and P048.
Field Communicator
To view or change the threshold time:
1. From the Home screen, select 2: Configure.
2. Select 2: Manual Setup.
3. Select 7: Advanced Processing (MSP900GH) or
Select 8: Advanced Processing (MSP400RH)
4. Select 2: Threshold, and then 6: Threshold 1 Time P043.
5. If a change is required:
(a) Input a new value, and then select “ENTER” to save it.
(b) Press “SEND” to update the transmitter.
Mobrey MCU900 Series control unit
To view or change the threshold time:
1. From the Main Menu screen, select SETUP.
2. Select the transmitter (e.g. “Tx1: MSP400RH”).
3. Select ENGINEERING, and then ADVANCED.
4. Select Thresh 1 Time.
5. Follow the on-screen instructions to edit and save a new setting.
6. Select “Quit” to exit to the previous menu.
Fast Keys
2, 2, 7 [or 8], 2, 6
Threshold 1 Time P043
2.9 ms
2.9
ESC
DEL ENTER
HELP
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(Field Communicator Screen)
Thresh 1 Time P043
2.9ms
Esc=Quit =Edit
(Mobrey MCU901 Screen)