Emerson ib-106-340cdr instruction manual Upgrading the Hazardous Area Oxymitter DR, Probe Options

Instruction Manual

IB-106-340CDR Original Issue January, 2002

Hazardous Area Oxymitter DR

This check valve or blocking valve is to prevent breathing of the calibration gas line and subsequent flue gas condensation and corrosion.

g.Upgrading the Hazardous Area Oxymitter DR

The Hazardous Area Oxymitter DR can be easily upgraded to a full Oxymitter 4000 or 5000. This provides an economi- cal upgrade path for users looking to pre- serve their probe investment upon the eventual failure of the signal conditioning electronics. Upgrading the Hazardous Area Oxymitter DR to a full Oxymitter 4000 or 5000 requires only the addition of a small electronics package to the exist- ing termination housing of the Hazardous Area Oxymitter DR probe. The converted unit will be a full Oxymitter 4000 or 5000 Oxygen Transmitter with the capability of providing a 4-20 mA oxygen signal with- out the need for an external signal condi- tioning electronics package. HART or Fieldbus communications are provided with the Oxymitter electronics. See Ap- pendix A for upgrade information.

1-3 PROBE OPTIONS

a.Abrasive Shield Assembly

The abrasive shield assembly, Figure 1-5,is a stainless-steel tube that surrounds the probe assembly. The shield protects against particle abrasion and condensa- tions, provides a guide for ease of insertion, and acts as a position support, especially for longer probes. The abrasive shield assembly uses a modified diffusor and vee deflector assembly, fitted with dual dust seal packing.

b.Flame Arrestor Ceramic Diffusion Assembly

The flame arrestor ceramic diffusion as- sembly, Figure 1-3,includes a set of baf- fles between the cell and the stack gases. This keeps 816°C (1500°F) cell tempera-

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Figure 1-3. Flame Arrestor Diffusion Assembly

tures from igniting unburned fuel in the stack. The ceramic diffusion assembly is also available with a dust seal for use with the abrasive shield assembly.

c.Flame Arrestor Snubber Diffusion Assembly

The snubber diffusion assembly, Figure 1- 4, is satisfactory for most applications. This element is also available with a dust seal for use with an abrasive shield.

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Figure 1-4. Flame Arrestor Snubber Diffusion

Assembly

1-4 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management