Model MicroCEM

Instruction Manual

748467-A January 2002

b.Manometer Method

Install a water-filled U-tube manometer at the sample gas outlet. Install a shut-off valve at the sample gas inlet. Admit air or inert gas to the inlet shut-off valve until the analyzer is pressurized to approxi- mately 50 hPa. The water column will be about 500 mm.

Close the inlet shut-off valve and, following a brief period for pressure equilibrium, verify that the height of the water column does not drop over a period of about 5 minutes. If the water column height drops, the system is leaking and must be corrected before the introduction of any flammable sample gas or application of power.

MicroCEM Analyzer

Inlet

Outlet

Overpressure

Approx. 50 hPa

N2Water

Figure 2-8. Leak Test Manometer Method

Rosemount Analytical Inc. A Division of Emerson Process Management

Installation

2-15