Ametek 930 User Manual

1-4 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
Component Function
Calibration Gas System
Introduce Zero and Span gas into the Measuring Cell.
Flow Control Solenoid
Introduces Zero gas into system when analyzer sample system
is not up to normal operating temperature.
Used to Zero the analyzer.
Flow Control Rotameter
Used to adjust the ow of Zero and Span gas.
Calibration Gas Port Normally plugged connection used to introduce Span gas into
analyzer sample system.
Aspiration Components
Aspirator Drive Air Regulator
Adjusts drive air ow rate.
Check Valve Stops sample gas from entering the instrument air system if
instrument air pressure is reduced below the sample extraction
point pressure.
Drive Air Isolation Valve
Manually shuts o󰀨 drive Aspirator Air to the sample system.
Used for pressure checking the analyzer sample system.
Aspirator Pressure Gauge
Provides indication of Aspirator Air pressure and sample ow
rate.
Provides indication of process pressure when Aspirator Air is
shut o󰀨.
Flow Control Solenoid
Allows Aspirator Air to be turned o󰀨 and on automatically if the
analyzer is not ready to obtain a sample. This solenoid must be
energized for the analyzer to obtain a sample of gas.
Aspirator Tubing Connection
This tube, usually 1/4" stainless steel, runs from the Flow
Control Solenoid to the Aspirator in the ASR900 Sample Probe.
Aspirator (ASR900 Sample Probe)
Provides suction to move the sample gas through the sample
path. The Aspirator sucks sulfur from the Sulfur Collection
Reservoir (in the Sample Probe).
Probe Check Valve Provides protection against breakage of Aspirator Air line and
release of sour gas. This should be installed, if required, at the
inlet to the Aspirator Air pre-heater.
Pre-Heater (Flow Restrictor, in Solenoid Block)
Warms Aspirator Air to a temperature that will not cause
condensation and freezing of sulfur in the Aspirator.
Provides a consistent back-pressure for setting the Aspirator
Air, which reduces sample rate uctuations caused by process
pressure uctuations. The ow rate obtained at a gauge
pressure of 210 kPa (30 PSIG) is 30 L/min (1 SCFM).
To avoid plugging problems within the probe, do not
remove this tting or replace it with a general purpose
tting.

Ametek 930 Specifications

General

Brand	Ametek
Model	930
Category	Measuring Instruments
Language	English