Hazardous Area
X-STREAM O
2
Transmitter
4-20
Instruction Manual
IM-106-910C, Rev. 1.0
November 2009
CALIBRATION -
GENERAL
New O
2
cells may operate for more than a year without requiring calibration,
but older cells may require recalibration every few weeks as they near the end
of their life.
A
CALIBRATION RECOMMENDED
alarm provides notice of when a calibration
is required. This strategy ensures that the O
2
reading is always accurate and
eliminates many unnecessary calibrations based on calendar days or weeks
since previous calibration.
The Hazardous Area X-STREAM O
2
Transmitter(s) can be calibrated
manually through the handheld 375 Field Communicator or the Xi. Fully
automatic calibration can be performed automatically using the Xi Enhanced
Interface and the SPS 4001B Single Probe Autocalibration Sequencer or the
IMPS 4000 Intelligent Multiprobe Sequencer.
O
2
CALIBRATION
This section covers manual calibration. For automatic calibration details see
the Instruction Manual for the SPS 4001B Single Probe Autocalibration
Sequencer or the IMPS 4000 Intelligent Multiprobe Test Gas Sequencer.
X-STREAM O
2
calibration can be performed using three basic calibration
methods. The methods available to you for use depend on the configuration
of your system. The paragraphs that follow describe how to perform a calibra-
tion for three basic system configurations shown in Figure 4-9.
Included in the calibration procedures are instructions for setting up the cali-
bration parameters. Setup of the calibration parameters should be performed
before the first O
2
calibration. Thereafter, perform calibration setup only as
needed to change the calibration parameters or to reset the parameters fol-
lowing the replacement of primary system components.
Before calibrating verify that the calibration gas parameters are correct. Refer
to Section 3: Configuration of Hazardous Area X-STREAM O2 Transmitter.
Figure 4-9. Calibration Methods - Simplified
