Setting Pv Urv, And Lrv Values; Setting Range Values For Applied Temperature - Honeywell SmartLine STT700 HART User Manual
Stt700 series hart/de option
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Also See for SmartLine STT700 HART:
- User manual (62 pages) ,
- Quick start installation manual (14 pages) ,
- Safety manual (16 pages)
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5.2.12 Setting PV URV, and LRV Values
STT700 transmitters are calibrated at the factory with ranges using deg C. For a reverse
range, enter the upper range value as the LRV and the lower range value as the URV.
The LRV and URV values can be entered with the Toolkit keypad or by applying the corresponding
temperature values directly to the transmitter. Use the following procedure to key in the range values.
Starting at the My Device menu, make the following menu selections:
Device Setup > Basic Configuration > 4-20mA Outputs
Click Edit. The "WAO List*" screen will be displayed.
Select PV LRV and click Edit. You will be warned that if you change the value of the
variable it will change the loop current, which may upset the control process.
Click Yes to continue.
Enter the desired PV LRV value.
Click OK.
Choose PV URV.
Add the desired URV setting value
Press ENTER.
Select the PV URV, and click Edit. You will be warned that if you change the value
of the variable, it will change the loop current, which may upset the control process.
Click Yes to continue.
Click Return to go back to the Basic Configuration menu.
Click Send. The Send to Device screen will be displayed.
*WAO = WRITE AS ONE (grouping of parameters for editing, for example you can edit
PV URV and PV LRV in one shot if URV LRV is provided under WAO list)
5.2.13 Setting Range Values for Applied Temperature
When setting the range values using applied temperature, the URV changes automatically
to compensate for any changes in the LRV and to maintain the present span (URV – LRV).
When entering the LRV using the Tookit keypad, the URV does not change automatically.
If you use the applied temperature method, and need to change the LRV and URV, change
the LRV first. You can also use the local zero and span adjustments on the transmitter to set
the LRV and URV values.
1. Starting at the My Device menu, make the following menu selections:
Device setup > Advanced Configuration>Calibration > Calibration Methods > Apply
2. Click Execute. You will be warned to remove the loop from automatic control. After doing so,
press OK to continue.
3. Select 4mA from the list, and then click OK. A message will prompt you to apply a new
4 mA input.
4. Click OK; otherwise, click Abort.
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STT700 Series HART/DE Option User's Manual
Revision 1
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