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Loading Material into PrecisionFlo Module
Configuring Pressure Sensors
This section describes how to set maximum and
minimum limits for these pressure sensors:
material outlet
material inlet (if used)
material-applicator tip (if used)
The material inlet and applicator tip sensors are option-
al. If you do not have them, you must still run the
procedures for setting the limits, but you will set the
limits to 0. See the procedures on page 20.
Before setting the sensor pressure limits, you must set
the sensors’ scale factor. Setting the scale factor lets
the PrecisionFlo module correlate voltage signal with
inlet or outlet pressures.
Only set the scale factor once and it applies to the
material outlet, material inlet, and material-applicator
tip sensors.
Setting the Scale Factor for Pressure Sensors
This procedure sets the operating ranges so that the
maximum and minimum limits of the pressure sensors
correspond to the maximum and minimum voltages
produced by the sensors.
For example: If the sensor has a pressure range of 0
to 1500 psi, and an output range of 1 to 5 volts, the
PrecisionFlo control assembly correlates a 1 volt signal
with a pressure of 0 psi, and a 5 volt signal with a
pressure of 1500 psi (Fig. 14).
0
1
5
1500
Pounds per Square Inch (psi)
Volts
(VDC)
Pressure in
0
Fig. 14
Before you set the scale factor, determine which type
of sensor you have and what settings you have to
enter into the software.
1.
On the control pendant:
HOME
SETUP
Protected Setup
2.
Key in the password, then press
[ENTER]
.
3.
Then go to:
PROTECTED SETUP
Scale Press. Sensor
4.
You see:
––SCALE PRESS SENSOR––
Enter Max and Min
x.xxxVdc=xxxxpsi Max
x.xxxVdc=xxxxpsi Min
See Fig. 15 and Table 1 for sensor type and corre-
sponding voltage and pressure settings.
Fig. 15
Sensor
Cap
Table 1 — Scale Pressure Sensor Settings
Black Sensor Cap
Aluminum Sensor
Cap
Max Vdc
5
5
Min Vdc
1
1
Max psi
1500
3500
Min psi
0
0
Continued on the next page.
