Emerson Model 1700 Manual De Usuario

Gas Standard Volume Flow Cutoff

 affects both the gas standard volume flow values reported

via outputs and the gas standard volume flow values used in other transmitter behavior
(e.g., events defined on gas standard volume flow).

AO Cutoff

 affects only flow values reported via the mA output.

Example: Cutoff interaction with AO Cutoff lower than Gas Standard Volume Flow Cutoff

Configuration:

•

mA Output Process Variable

 for the primary mA output: Gas Standard Volume Flow Rate

•

Frequency Output Process Variable

: Gas Standard Volume Flow Rate

•

AO Cutoff

 for the primary mA output: 10 SLPM (standard liters per minute)

•

Gas Standard Volume Flow Cutoff

: 15 SLPM

Result: If the gas standard volume flow rate drops below 15 SLPM, the volume flow will be
reported as 0, and 0 will be used in all internal processing.

Example: Cutoff interaction with AO Cutoff higher than Gas Standard Volume Flow Cutoff

Configuration:

•

mA Output Process Variable

 for the primary mA output: Gas Standard Volume Flow Rate

•

Frequency Output Process Variable

: Gas Standard Volume Flow Rate

•

AO Cutoff

 for the primary mA output: 15 SLPM (standard liters per minute)

•

Gas Standard Volume Flow Cutoff

: 10 SLPM

Result:

•

If the gas standard volume flow rate drops below 15 SLPM but not below 10 SLPM:

-

The primary mA output will report zero flow.

-

The frequency output will report the actual flow rate, and the actual flow rate will
be used in all internal processing.

•

If the gas standard volume flow rate drops below 10 SLPM, both outputs will report
zero flow, and 0 will be used in all internal processing.

Configure Flow Direction

Display (standard)

Chinese-language
display

ProLink II

ProLink

 > Configuration > Flow > Flow Direction

ProLink III

Device Tools

 > Configuration > Process Measurement > Flow

Field Communicator Configure > Manual Setup > Measurements > Flow > Flow Direction

Configure process measurement

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