Resetting Calibration For Differential Pressure; Correcting The Lower Range Value (Lrv) For Temperature - Honeywell SmartLine Multivariable SMV800 Series User Manual

Resetting Calibration for Differential Pressure

SmartLine HART Transmitter can erase incorrect calibration data by resetting the device back to
final factory calibration, which is performed per the ordered range. The Corrects Reset command
returns the zero and span calibration factors to the original precise factory calibration.
The following procedure is used to reset calibration data to factory calibrated range using the
communicator.
1. Connect the MCT404 Toolkit as per
2. Figure 7 across the loop wiring and turn on.
3. Turn the MCT404 Toolkit on, start the FDC application.
4. On the FDC Home page, select Online, and establish communication with the Transmitter.
5. Select the My Device menu, and choose from the following selections:
a. Device Setup \ Calibration \DP Calibration\DP Reset Corrects
5. You will be prompted to remove the loop from automatic control. After removing the loop
from automatic control, press OK.
6. You will be notified that a Reset Corrects is about to occur. Press OK
7. When the message "Reset Corrects OK" appears, press OK. The previous calibration
"Corrects" are removed and calibration is reset to the factory values.
8. When prompted to return the loop to automatic control, press OK
Note: Similar procedures as in section 8.3.3 to 8.3.5 can be used to calibrate Static Pressure.

Correcting the Lower Range Value (LRV) for Temperature

1. Check that the Write Protect Jumper is in the "OFF" position.
2. See
3. Figure 7 for typical test connections. Connect the power supply and communicator to the
signal terminals of the Transmitter terminal block.
4. Connect the precision calibrator source to the sensor (to be corrected) inputs of the
transmitter.
5. Turn on the power supply, and allow the Transmitter to become stable.
6. Turn the MC Toolkit on, start the FDC application.
7. On the FDC Home page, select Online, and establish communication with the Transmitter.
8. Check that the device is not in the Write Protect mode.
9. The Lower Calibration Point and Upper Calibration Point values have to be entered in the
respective sensor config parameters in the Sensors menu. These calibration points are used in
the LRV Correct and URV Correct methods (not LRV and URV).
10. Select the My Device menu, and choose from the following selections:
a. Device Setup \ Calibration \ PT Calibration \ PT LRV Correct
11. You will be prompted to remove the loop from automatic control. After removing the loop
from automatic control, press OK.
12. When prompted, adjust the temperature source to apply value equal to the Lower Calibration
Point, and press OK.
13. When the temperature stabilizes, wait for 5 seconds, then press OK.
14. When prompted, remove temperature.
Revision 6.0
SMV800 Series HART/DE Option User's Manual
Page 153