Table 12 Honeywell Hart Calibration - Zero Trim - Honeywell MC ToolKit User Manual

Table 12 Honeywell HART Calibration - Zero Trim

Overview
Requirements:
•
Input source, with accuracy of at
of
least 0.04%
Objectives
•
resistor, at least 250-ohms
(Applies to
•
Voltmeter or Ammeter
ST 3000)
•
24 Vdc Power Supply (nominal)
•
Clean work area with suitable
environmental conditions.
•
Pressure Transmitter must be level.
Overview of Procedures:
The Zero-Correct procedure establishes
the correct vertical positioning of the
response profile.
The LRV Correct and URV Correct
procedures establish the correct slope of
the response profile by rotating the
response profile around the zero-
reference point as a pivot.
The Zero-Correct procedure can be done
at any time during the Correct LRV and
Correct URV procedures in the same
calibration session.
The Correct LRV and Correct URV
procedure should never be performed
without first performing the Correct
Input (Zero) procedure in the same
calibration session.
The transmitter should be removed from
service and moved to a clean area.
The input source should be derived from
a precision input source such as a dead-
weight tester.
Release 3
9/06
Honeywell HART Calibration Zero Trim
34-ST-25-20 MC Toolkit User Manual
MC Toolkit Software with Honeywell HART Transmitters
Objective(s):
Using a precision PV input source as a reference,
command the transmitter to write calibration
coefficients to NVM associated with transmitter
input hardware and software.
•
Correct Input (Zero)
•
Correct LRV
•
Correct URV
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