RJG Lynx LS-B-127-125, Product Manual

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Lynx™ Strain Gage Button Sensors LS‑B‑127‑50/125/500/2000 | Product Manual 4 RJG, Inc.
OPERATION
BUTTON‑STYLE/UNDER‑PIN
The Lynx single‑channel, button‑style strain
gage sensor is placed in a mold behind an
ejector pin. As plastic is injected into the cavity,
the pressure of the plastic applies force to
the ejector pin; the plastic pressure force is
transfered to the strain gage sensor.
STRAIN GAGE SENSORS
The strain gage sensing element inside the
sensor boy converts the applied force to an
electrical signal that can read using the
eDART
system or CoPilot system software. The sensing
element uses a Wheatstone bridge configuration
(four strain gage elements positioned in a
circuit) to convert small amounts of sensor
deformation into a measurable voltage through
the change in resistance of the strain gage
sensing elements. The sensor sends out a
low‑level voltage signal which is proportional
to the amount of force applied by the pressure
placed on the pin and transferred to the sensor.
The voltage measurement is carried through
the sensor cable, to the Lynx sensor electronics
case mounted on the outside of the mold.
The voltage signal is converted by the sensor’s
electronics to a high‑accuracy digital output that
directly correlates with pressure from within the
cavity.
The Lynx case is connected to the RJG, Inc.
eDART
System, which records and displays
the sensor’s measurement for use in process
monitoring and control. In addition, the Lynx
case communicates the sensor model, serial
number, full scale load, and calibration data
automatically to the
eDART
or CoPilot system,
providing the highest level of sensor accuracy
while minimizing the need for user‑entered data
when configuring the sensor in the
eDART
or
CoPilot systems.
EXCITATION
Gate 1
Gate 2
Gate 3
Gate 4
OUTPUT
STRAIN GAGE OPERATING PRINCIPLE