Calibration
3A1657A
9
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 are calibrated at the factory and do not
require regular calibration. However, 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.
Parts and Tools Required
L-Head, S-Head, GX-16
•
Blocked orifice -- see dispense valve manual for part
numbers, see
•
Scale
•
Container to catch dispensed material
•
L-Head Only --
•
4 mm and 6 mm hex keys
•
S-Head Only --
•
5/32 hex key
•
1 in. hex wrench
•
3/8 in. hex wrench
•
GX-16 Only --
•
7/16 in. hex wrench
Fusion, EP, Probler P2
•
Scale
•
Two containers to catch dispensed material
•
Adjustable wrench
•
Fusion Gun and EP Gun Only --
•
Ratio checking assembly 24F227
•
Probler P2 Only --
•
Calibration kit 24J326
MD2 Valve
•
Ratio Check Adapter:
Part No. 255247 for 1:1 MD2 Valves
Part No. 255245 for 10:1 MD2 Valves
•
Adjustable Wrench
•
Scale
•
Two small containers, must have a small enough rim
to separately catch each material dispensed from
the ratio check adapter
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.
