Emerson Rosemount Oxymitter 4000, Reference Manual, Page: 19 / 198

at a constant temperature. The electronics accepts millivolt signals generated by the
sensing cell and produces the outputs to be used by remotely connected devices. The
output is an isolated 4-20 mA current.
The transmitter is available with an integral or remote electronics package. Two
calibration gas sequencers are available, the Rosemount IMPS 4000 and the Rosemount
SPS 4001B (
Figure 1-2 ). The operator must install the Rosemount IMPS 4000 and the
Rosemount SPS 4001B in a nonhazardous, explosive-free environment.
Figure 1-2: Rosemount Oxymitter 4000 Autocalibration System Options
A. Rosemount Oxymitter 4000
B. Rosemount SPS 40001B (1 probe). Must be installed in a safe area.
C. Rosemount IMPS 4000 (1 to 4 probes). Must be installed in a safe area or be X- or Z-
purged by the customer.
Systems with multiprobe applications may employ an optional Rosemount IMPS 4000
Intelligent Multiprobe Test Gas Sequencer. The Rosemount IMPS 4000 provides automatic
calibration gas sequencing for up to four Rosemount Oxymitter 4000 units and
accommodates autocailibrations based on the CALIBRATION RECOMMENDED signal from
the transmitter, a timed interval set up in HART
®
or the Rosemount IMPS 4000, or
whenever a calibration request is initiated.
For systems with one or two transmitter units per combustion process, the operator can
use an optional Rosemount SPS 4001B Single Probe Autocalibration Sequencer with each
transmitter to provide automatic calibration gas sequencing. The sequencer performs
autocalibrations based on the CALIBRATION RECOMMENDED signal from the transmitter,
a timed interval set up in HART, or whenever a calibration request is initiated.
1.5 Features
The cell output voltage and sensitivity increase as the oxygen concentration decreases.
The Rosemount
™
Oxymitter 4000 includes:
Reference Manual Description and specifications
00809-0100-4340 October 2019
Rosemount Oxymitter 4000 19