Operation And Maintenance; Calibration - Honeywell SMV800 User Manual

4. Operation and Maintenance

4.1

Calibration

This section provides information about calibrating transmitter's pressure and temperature
measurement range. It also covers the procedure to reset calibration to the default values as
a quick alternative to measurement range calibration.
The SMV800 SmartLine transmitter does not require calibration at periodic intervals to
maintain accuracy. If a recalibration is required, we recommend that perform a bench
calibration with the transmitter removed from the process and located in a controlled
environment to get the best accuracy.
The following sections describe for pressure and temperatue measurement range:

How to perform a two-point calibration of a transmitter

How to perform a correct reset to return a transmitter calibration to its default
values
It is suggested to use SMV Modbus PC based application tool for quicker calibration of
transmitter instead of manually writng each Modbus register defined for respective
calibration. The Calibration menu in SMV Modbus Manager application tool is available at
Maintenance->Calibration and Correction Records screen, refer below screen.
The SMV800 transmitter supports two-point calibration. This means that when two points
in a range are calibrated, all points in that range adjust to the calibration.
This procedure assumes that the transmitter has been removed from the process and is in a
controlled environment.
Revision 1.0 SMV800 Modbus User's Guide Page 173