Fluid Metering Assembly Overview; Pneumatic Fluid Metering Assembly; Precisionflo Xl Pneumatic Fluid Regulator; Typical Fluid Applications - Graco PrecisionFlo XL Manual

Fluid Metering Assembly Overview

Pneumatic Fluid Metering Assembly

The fluid metering assembly (Fig. 1) can be attached
to a robot arm, or mounted on a pedestal. Main com-
ponents of the fluid metering assembly are:
D PrecisionFlo XL pneumatic fluid regulator (A)
D flow meter (B) to precisely measure the amount of
fluid dispensed (optional)
D solenoid air valve (C) that controls a dispense
device
D voltage to pressure (v/p) controller (D) for adjusting
the air pressure to the fluid regulator (A)
A
C
D
Fig. 1
6 309375
PrecisionFlo XL Pneumatic Fluid
Regulator
The PrecisionFlo XL pneumatic fluid regulator is a pre-
cision fluid pressure regulator that uses air pressure to
control fluid pressure and to provide fast response to
electronic commands and ensure a precisely con-
trolled, continuous flow of material.
The PrecisionFlo XL module combines continuous
pressure control with the ability to change bead profiles
almost instantaneously. When used with one of the
optional flow meters, the PrecisionFlo XL module
automatically adjusts for fluctuations in the operating
environment, such as material viscosity, temperature,
and robot speed, while maintaining the desired dis-
B
pense rate.
The PrecisionFlo XL metering valve is electrically
controlled by the PrecisionFlo XL module and consis-
tent material flow is assured by a closed-loop pressure
control design which also adjusts for flow rate. The
module responds to robot-supplied signals to provide
an accurate and consistent output flow based on a
comparison of actual to desired flow rates.

Typical Fluid Applications

D PVC Sealer
D Plastisols
D Sound deadening materials
TI1417C
D Body panel reinforcement