www.miinet.com
Moore Industries-International, Inc.
- 23 -
User’s Manual
238-760-00K
May 2019
Functional Safety Dual Input Smart HART® Temperature Transmitter
STZ
Figure 2.10.
Sensor 1 Trim
The Trim Mode can be set for One Point or Two Point. If interested in obtaining the best
accuracy at one temperature point, choose the One Point mode. The most common Trim Mode
is Two Point. This mode yields greater measurement accuracy over a temperature range by
trimming points on each side of a specific range or by trimming at your Zero and Full scale
values (as configured in the Ranging and Mapping screen). The below example outlines a Two
Point trim at the Zero and Full scale points..
Note:
The current Sensor 1 Reading is -2.53° C.
Perform the following steps -
1. Set Trim Mode to “Two Point”
2. Set your input resistance to match your Sensor 1 Zero point. By example – If your Sensor 1
Zero point is 0° C the input you apply to the instrument will be 1000.00Ω.
3. Enter the Sensor 1 Zero value into the field entitled Desired Trim Point Value. For my example
I will be entering 0 (as my range is defined as 0-100°).
4. When your reading stabilizes press the Trim Lower Point button and your Sensor 1 Reading
should now read the correct Trim Point Value (0 in this example).
5. Enter the Sensor 1 Full value into the field entitled Desired Trim Point Value. For my example I
will be entering 100 (as my range is defined as 0-100°).
6. Set your input resistance to match your Sensor 1 Full point. By example – If your Sensor 1
Full point is 100° C the input you apply to the instrument will be 1385.00Ω.
7. When your reading stabilizes press the Trim Upper Point button and your Sensor 1 Reading
should now read the correct Trim Point Value (100 in this example).
SECTION 2
