Emerson manual Imps 4000 Optional, SPS 4000 Optional, Mounting, Components Figure, Operation

Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

1-3 IMPS 4000 (Optional)

Information on the IMPS 4000 is available in the IMPS 4000 Intelligent Multiprobe Test Gas Se- quencer Instruction Bulletin.

1-4 SPS 4000 (Optional)

The SPS 4000 Single Probe Autocalibration Sequencer provides the capability of performing automatic, timed or on demand, calibrations of a single Oxymitter 4000 without sending a techni- cian to the installation site.

a.Mounting

The SPS 4000 can be mounted either di- rectly to an Oxymitter 4000, to remote elec- tronics, or at a remote location if space is limited. In addition, the integrally mounted SPS 4000 can be configured for a horizon- tally or vertically mounted Oxymitter 4000 (Figure 2-3). The information in this instruc- tion bulletin will cover the integrally mounted units only. For information on remote mounted units, refer to the SPS 4000 Single Probe Autocalibration Sequencer Instruction Bulletin.

b.Components (Figure 1-9)

The SPS 4000 consists of a manifold and a calibration gas flowmeter. The manifold provides electrical feedthroughs and cali- bration gas ports to route power and signal connections and calibration gases to and from the sequencer. In addition, the mani- fold 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 4000 in- clude a reference air flowmeter and pres- sure regulator. The reference air flowmeter indicates the flow rate of reference air con- tinuously 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 stan- dard. 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.

c.Operation

The SPS 4000 works in conjunction with the Oxymitter 4000’s CALIBRATION RECOM- MENDED feature to perform an autocalibra- tion. This feature automatically performs a gasless calibration check every hour on the Oxymitter 4000. If a calibration is recom- mended and its contact output signal is set for “handshaking” with the sequencer, the Oxymitter 4000 sends a signal to the se- quencer. The sequencer automatically per- forms a calibration upon receiving the signal. Thus, no human interface is required for the automatic calibration to take place.

Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-9