
Reference Manual
00809-0100-4130, Rev AA
May 2009
Rosemount 2130
1-4
Heartbeat LED
The 2130 has a ‘heartbeat’ LED that indicates status. The LED flashes when
the switch output is ‘off’ and is constantly lit when 'on'. The LED constantly
indicates that the 2130 is functioning correctly.
Magnetic Test Point
A magnetic test-point is located on the side of the housing, allowing the user
to perform a functional test of the 2130 and the system connected to it.
Holding a magnet to the test-point causes the output to change state.
Instrument Health Monitor and Continuous Self-Check
The 2130 continuously performs instrument health diagnostics to self-check
the condition of the fork and sensor. These diagnostics can detect damage to
the forks including corrosion, internal or external damage to the forks, and
breakages to the internal wiring. Any of these conditions will trigger the
'heartbeat' LED to pulse intermittently, followed by safe handling of the
electrical load.
Electrical Hookup
The terminal blocks extend above the housing and give easy terminal access.
The polarity insensitivity and short-circuit protection make electrical hook-up
safe and easy.
Fork Design
The “fast drip” fork design draws liquid away from the fork tips, and together
with a short switching delay, allows the 2130 to react quickly and with greater
sensitivity to density variations.
ROSEMOUNT 2130
APPLICATION
EXAMPLES
For most liquids, including coating, aerated liquids and slurries, the function is
virtually unaffected by flow, turbulence, bubbles, foam, vibration, solid
particles, build-up, or properties of the liquid.
See Figure 1-2 on page 1-6 for application examples.
The 2130 can be used in Hazardous (IS or Exd) or non-hazardous (safe)
areas but supports higher process temperatures up to 500 °F (260 °C).
The 2130 can be mounted in any position in a tank or pipe. There is a wide
range of threaded, flanged, or hygienic connections.
Application Considerations:
• Ensure the process is operating within the temperature and pressure
ranges (see “Specifications” on page A-1)
• Ensure the liquid viscosity is within the recommended viscosity range
(see “Specifications” on page A-1)
• Check that the liquid density is higher than 37.5 lb/ft3 (600 kg/m3), or
above 31.2 lb/ft3 (500 kg/m3) when ordered with the Low Density
Range option (see “Specifications” on page A-1)
• Check for risk of build-up on the forks
Avoid situations where drying and coating products may create
excessive build-up
• Ensure there is no risk of bridging the forks