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Rosemount 8600 Vortex Flow Meter
Reference Manual
May 2019
Installation
00809-0100-4860, Rev BF
Set these jumpers during the commissioning stage to avoid exposing the electronics to the
plant environment.
Alarm
As part of normal operations, the Rosemount 8600D continuously runs a self-diagnostic
routine. If the routine detects an internal failure in the electronics, flowmeter output is
driven to a low or high alarm level, depending on the position of the failure mode jumper.
The failure mode jumper is labeled ALARM and is set at the factory per the CDS
(Configuration Data Sheet); the default setting is HI.
Security
You can protect the configuration data with the security lockout jumper. With the security
lockout jumper ON, any configuration changes attempted on the electronics are
disallowed. You can still access and review any of the operating parameters and scroll
through the available changes, but no actual changes will be permitted. The security
lockout jumper is labeled SECURITY and is set at the factory per the CDS; the default setting
is OFF.
3.4.1 Failure mode vs. saturation output values
The failure mode alarm output levels differ from the output values that occur when the
operating flow is outside the range points. When the operating flow is outside the range
points, the analog output continues to track the operating flow until reaching the
saturation value listed below; the output does not exceed the listed saturation value
regardless of the operating flow. For example, with standard alarm and saturation levels
and flows outside the 4—20 mA range points, the output saturates at 3.9 mA or 20.8 mA.
When the transmitter diagnostics detect a failure, the analog output is set to a specific
alarm value that differs from the saturation value to allow for proper troubleshooting.
Figure 3-5. Alarm and Security Jumpers
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