Mechanical
configurations
Description
Energy Value
Check
If enabled, the GC analyzes the calibration gas as an unknown stream and
computes its energy value. The GC then compares this value to the Cal Gas
Cert CV and determines if the calibration gas's energy value is within the CV
Check Allowed Deviation. If it isn't, the GC triggers the Energy Value Invalid
alarm. The following conditions must be met before the GC can perform a EV
Check:
• The EV Check flag in the System window must be enabled.
• At least one stream must be set up in the Streams window as a calibration
stream, and the Auto flag for this stream must be enabled.
The EV Check is performed under any of the following circumstances:
• During a warm start that follows a power failure during normal operation.
The GC waits for the heater and electronic pressure controller to reach
their respective set points and stabilize. It then analyzes the calibration
gas as an unknown stream and identifies the peaks. If all the component
peaks are identified, the GC computes the calibration gas' energy value
and performs the EV Check.
• After a successful calibration, the GC computes the gas' energy value with
the new response factors and performs the EV Check
1. Press Insert to add a new analysis.
2. Press Delete to delete an analysis.
Related information
Configure analytical train
2.5 Leak checking and purging for first calibration
CAUTION
EQUIPMENT DAMAGE
Failure to clean and dry the tubing may compromise the integrity of the analyzer or its
warranty.
Make sure all tubing is clean and dry internally.
Prior to installation, blow the tubing free of internal moisture, dust, or other
contaminants.
Verify that all electrical connections are correct and safe and then turn the gas
chromatograph (GC) on.
Installation and start-up Quick Start Guide
July 2020 00825-0100-3770
46 Emerson.com/Rosemount
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