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Reference Manual
00809-0200-4648, Rev BB
2.7
Fast Key sequence
Table 2-2
Note
The Fast Key sequences assumes that the latest Device Dashboard (DD) is being used. The
latest DD revision can be found on the
Table 2-2. Rosemount 648 Wireless Fast Key Sequence
Function
Device
Information
Guided Setup
Manual Setup
Wireless
Configuration
Sensor
Configuration
Sensor
Calibration
2.8
Calibration
Calibrating the transmitter increases the measurement precision by allowing corrections to
be made to the factory-stored characterization curve by digitally altering the transmitter's
interpretation of the sensor input.
To understand calibration, it is necessary to understand that smart transmitters operate
differently from analog transmitters. An important difference is that smart transmitters are
factory-characterized, meaning that they are shipped with a standard sensor curve stored
in the transmitter firmware. In operation, the transmitter uses this information to produce a
process variable output, in engineering units, dependent on the sensor input.
Calibration of the Rosemount 648 Wireless may include the following procedures:
Configuration
lists the Fast Key sequences for common transmitter functions.
Fast Key sequence
2, 2, 7
2, 1
2, 2
2, 2, 1
2, 2, 2, 5
3, 5, 2
Sensor Input Trim: digitally alter the transmitter's interpretation of the input
signal
Transmitter Sensor Matching: generates a special custom curve to match that
specific sensor curve, as derived from the Callendar-Van Dusen constants
title page
of this document.
Menu items
Tag, Long Tag, Descriptor, Message, Date
Configure Sensor, Join to Network, Config Advance
Broadcasting, Calibrate Sensor
Wireless, Sensor, Display, HART, Device Temperature,
Terminal Temperature, Device Information, Power,
Security
Network ID, Join to Network, Broadcast Info
Type, Connection, Units, Serial Number,
Transmitter-Sensor Matching, RMT X-well Setup
Sensor Value, Sensor Status, Current Lower Trim,
Current Upper Trim, RTD 2 Wire Offset, Lower Sensor
Trim, Upper Sensor Trim, Device variable trim reset
Configuration
July 2016
17
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