User's Manual

A5E32337683 SITRANS LR260 (HART) – OPERATING INSTRUCTIONS Page 65
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Parameters
2.3.1.4. 20 mA Setpoint
Sets the process level corresponding to the 20 mA value. 20 mA always
defaults to 100%, and mA Output Function determines whether this is a
Level, Space, or Distance measurement. Level and Space are measured as
a percentage of the difference between High Calibration Point and Low
Calibration Point: Distance is measured as a percentage of Low Calibration
Point.
Enter the reading that is to correspond to a 20 mA output. Units are defined
in Sensor units for Level, Space, or Distance.
1)
2.3.1.5. Minimum mA limit (MIN. mA LIMIT)
Prevents the mA output from dropping below this minimum level for a
measurement value. This does not restrict the Fail-safe or manual settings.
2.3.1.6. Maximum mA limit (MAX. mA LIMIT)
Prevents the mA output from rising above this maximum level for a
measurement value. This does not restrict the Fail-safe or manual settings.
2.3.1.7. 4 mA Output Trim
Calibrates the 4 mA output. The mA output of the device is pre-calibrated;
however, 4 mA Output Trim can be used to trim remote displays or inputs.
Steps:
1. Set mA Output Function to Manual.
2. Set mA Output Value to 4 mA.
3. Attach a calibrated meter and check the output at the terminals; record
the remote reading in mA.
4. Enter this value in 4 mA Output Trim.
5. Restore mA Output Function to previous setting.
6. Confirm that the mA output is as expected.
Values
Range: 0 to 30 m
Default: 30 m (set to value corresponding to 100% as
defined by mA Output Function)
Related
Parameters
mA Output Function
1)
4 mA setpoint can be set less than 0 m, and 20 mA setpoint can be set greater than
30 m when using handheld programmer. Recommended range is 0 to 30 m.
Values
Range: 3.8 to 20.5 (mA)
Default: 3.8 (mA)
Values
Range: 3.8 to 20.5 (mA)
Default: 20.5 (mA)
Values
Range: 2.0 to 6.0 (mA)
Related
parameters
20 mA Output Trim