User's Manual

Calibration
12 3A1657F
Calibration
The following procedure describes how to adjust the
mass flow rate calculated by the machine. To calculate
the mass flow rate, the machine uses the chemical spe-
cific gravities entered in the Setup screens, the volumet-
ric flow measured by the flow meters, and the K-Factor
inputs for each chemical.
The flow meters do not require regular calibration. How-
ever, if harmful materials such as solvents or abrasive
materials pass through the flow meters re-calibration will
be necessary.
While this procedure adjusts the K-Factor, its purpose is
to fine-tune the calculated specific gravity of each chem-
ical used. Because of this, it is important to have accu-
rate chemical specific gravities entered in ADM.
To accurately measure flow from each chemical side,
some dispense valves require dispensing one chemical
at a time, while other can split the stream into two sepa-
rate containers. To dispense one chemical at a time, a
blocked orifice must be installed in one side of the dis-
pense valve to prevent fluid flow. To dispense both
chemicals simultaneously but into separate containers,
a special assembly must be installed to separate the
fluid streams.
Using a Blocked Orifice
The L-Head, S-Head, and GX-16 dispense valves
require installing a blocked orifice to calibrate fluid flow.
The blocked orifice prevents leaking fluid and cross-con-
tamination of the fluid line not being calibrated.
NOTICE
Do not allow solvents or abrasive material to pass
through the flow meters. Failure to do so will result in
damage to the flow meters and reduced accuracy.
NOTICE
The fluid line not being calibrated must have a
blocked orifice installed. Failure to do so will result in
fluid being pushed into the opposite fluid line during
the calibration shot. This will result in significant
labor to clear the mixed and cured material from the
fluid lines.