Gas Connections To The Instrument; Purging - Teledyne 2120 Operating Instructions Manual

Trace Nitrogen in Argon Analyzer

3.5.2 Gas Connections to the Instrument

CAUTION: EQUIPMENT DAMAGE MAY RESULT IF THE
ANALYTICAL CELL IN THIS UNIT IS EXPOSED TO
EXCESSIVE PRESSURE, CAUSING IT TO BREAK OR
SHATTER. TO PREVENT THIS, NEVER EXCEED 6
PSIG (41 KPA) ON THE ANALYTICAL CELL.
DO NOT REMOVE THE FLOW CONTROL ORIFICE
FROM THE SAMPLE INLET OF THE ANALYZER.
DO NOT EXCEED 10 PSIG (69 KPA) ON THE SAMPLE
INLET.
DO NOT BLOCK THE VENT.
To connect the gas line:
1. Connect an unobstructed vent line to the 1/4-in (0.64 cm)
Swagelok fitting on the vent port on the rear of the analyzer.
2. Connect the inlet line from the sample manifold system,
regulated to 6 psig (41 kPa), to the 1/4-in (0.64 cm) VCR Input
port fitting on the rear of the analyzer.

3.6 Purging

The Model 2120 is equipped with a flow control orifice installed at
the analyzer sample inlet to regulate flow and pressure to the analytical
cell. With the orifice in place, a maximum inlet pressure of 10 psig (69
kPa) is allowable.
CAUTION: OZONE EMISSIONS ARE POSSIBLE IF AIR OR
MOISTURE IS IONIZED IN THE SAMPLING SYSTEM.
THE SAMPLE PATH MUST BE RELATIVELY FREE
OF AIR AND/OR MOISTURE BEFORE APPLYING THE
IONIZING VOLTAGE.
KEEP SERIES1200 POWER OFF UNTIL THE
ANALYZER IS FULLY PURGED.
When installing a new analyzer or starting up an analyzer that has
been idle for a period of time, the sampling system should be purged for
several hours to cleanse it of contaminants and water vapor.
Materials required:
Teledyne Analytical Instruments
Installation
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