Emerson IFT9701 用户手册
Model IFT9701 Transmitter Instruction Manual
9
Getting Started
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Begin
2.3.1
Security
The security jumper enables the user to write-protect the flowmeter configuration, so it cannot be
changed using a HART communication device:
changed using a HART communication device:
•
With the security jumper OFF, the flowmeter configuration can be changed.
•
With the security jumper ON, the flowmeter configuration cannot be changed.
The default setting is OFF. To set the security jumper, see Figure 2-3.
2.3.2
Fault output levels
The transmitter can be configured to produce downscale or upscale fault outputs. In a fault condition:
•
Downscale: The milliamp output goes to 2 mA; the pulse output goes to 0 Hz.
•
Upscale: The milliamp output goes to 22 mA; the pulse output goes to 7200 Hz.
•
The diagnostic LED blinks ON four times per second, whether the setting is upscale or
downscale.
downscale.
The default setting is downscale. To set the fault output jumper, see Figure 2-3.
Figure 2-3
Jumper location and settings
Default settings
With standoff beneath jumpers
Optional settings
With standoff beneath jumpers
Downscale
faults
faults
Security
OFF
Upscale
faults
faults
Security
OFF
Upscale
faults
faults
Security
ON
Downscale
faults
faults
Security
ON