Emerson Process Management OXYMITTER 4000 IM-106-340 - Manual (Page 30)

Oxymitter 4000
1-12
Instruction Manual
IM-106-340, Rev. 4.0
May 2006
IMPS 4000 (OPTIONAL) Information on the IMPS 4000 is available in the IMPS 4000 Intelligent
Multiprobe Test Gas Sequencer Instruction Manual.
SPS 4001B (OPTIONAL) The SPS 4001B Single Probe Autocalibration Sequencer provides the
capability of performing automatic, timed or on demand, calibrations of a
single Oxymitter 4000 without sending a technician to the installation site.
Mounting The SPS 4001B is fully enclosed in a NEMA cabinet suited for wall-mounting.
This cabinet provides added protection against dust and minor impacts. The
SPS 4001B consists of a manifold and a calibration gas flowmeter. The mani-
fold provides electrical feedthroughs and calibration gas ports to route power
and signal connections and calibration gases to and from the sequencer. In
addition, the manifold houses two calibration gas solenoids that sequence the
gases to the Oxymitter 4000, a pressure switch that detects low calibration
gas pressure, and two PC boards. A terminal strip housed within the terminal
cover provides convenient access for all user connections.
Components optional to the SPS 4001B include a reference air flowmeter and
pressure regulator. The reference air flowmeter indicates the flow rate of
reference air continuously flowing to the Oxymitter 4000. The reference air
pressure regulator ensures the instrument air (reference air) flowing to the
Oxymitter 4000 is at a constant pressure [20 psi (138 kPa)]. The regulator
also has a filter to remove particulates in the reference air and a drain valve to
bleed the moisture that collects in the filter bowl.
Brass fittings and Teflon tubing are standard. Stainless steel fittings and
tubing are optional. Also, disposable calibration gas bottles are available as
an option or can be purchased through a local supplier.
Operation The SPS 4001B works in conjunction with the Oxymitter 4000's CALIBRA-
TION RECOMMENDED feature to perform an autocalibration. This feature
automatically performs a gasless calibration check every hour on the Oxymit-
ter 4000. If a calibration is recommended and its contact output signal is set
for "handshaking" with the sequencer, the Oxymitter 4000 sends a signal to
the sequencer. The sequencer automatically performs a calibration upon
receiving the signal. Thus, no human interface is required for the automatic
calibration to take place. For further SPS 4001B information, refer to the SPS
4001B Single Probe Autocalibration Sequencer Instruction Manual.