Product Manual | Lynx™ Quad Temperature Modules LS‑QTTB‑J & LS‑QTTB‑K 1
PRODUCT DESCRIPTION
The Lynx™ Quad Temperature Modules
LS-QTTB-J and LS-QTTB-K accept input
from up to four thermocouples (type J or
type K) for use with the RJG, Inc. eDART®
or CoPilot® systems.
APPLICATIONS
Temperature data can help identify cooling
circuit variation, imbalance or blockage—
including warp due to semi-crystalline
shrinkage behavior—and improper melt
temperatures.
Mold temperatures including
in-cavity,effective melt, mold, parting
line, and coolant temperatures, can be
monitored using the LS-QTTB-J/K in
conjunction with temperature sensors and
the eDART or CoPilot system, as well as
barrel and dryer temperatures.
1. Mold Temperatures
• In-Cavity Temperature Monitoring*
If the plastic contacts the sensor or the
sensor is just behind the cavity wall, the
sensor is considered “in-cavity” and can be
post gate, mid-cavity or end-of-cavity.
In-cavity temperature monitoring can be
used to identify melt flow front arrival,
which is useful in identifying balance and
warp issues.
• Effective Melt Temperature, Surface
(Mold) Temperature*, Parting Line, Sprue,
or Runner
If the sensors are located in the mold steel
the sensor can be utilized for effective melt
temperature, mold (surface) temperature,
parting line temperature, sprue, or runner.
Effective melt temperature is a summary
value that the eDART generates from a
cavity temperature sensor installed in the
wall of the cavity where the flow front
contacts the sensor as it passes by.
A calibration factor is used to compute
a number close to the actual melt
temperature; the effective melt temperature
will never read out the actual temperature
of the melt. If the value changes over
time or when transferring a mold between
machines, a change in melt temperature
can be suspected.
Changes in cycle time or breaks in
cycle dramatically affect thermodynamic
stability in injection molding; monitoring
temperature enables troubleshooting of
processing problems. Effective melt, mold,
and parting line temperatures can help
identify cooling variations.
• Coolant Temperature Monitoring*
If the coolant contacts the sensor or the
sensor is just behind the coolant channel,
the sensor is considered a coolant
temperature monitor; the sensor can be
assigned in the Sensor Locations tool as
mold output temperature.
Coolant temperature is NOT the same as
the mold surface temperature. After the
process has stabilized a flow of heat out
of the mold occurs on every cycle which
creates a temperature gradient from the
cavity surface to the coolant.
Coolant temperature monitoring can be
used to identify cooling circuit variation,
which is useful in identifying warp issues.
*Available on the CoPilot system.
