Ultimus I-III Dispenser Pressure Readout, Vacuum Readout, and Dispense Timer Validation
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Pressure Readout Validation
The Ultimus I–III digital pressure readings are validated against a pressure standard with a known minimum accuracy. The pressure
standard must be at least ±0.25 psi for Ultimus I and ±0.05 psi for Ultimus II and III. Refer to the equipment list for suitable test
gauges. The digital pressure readout accuracy specification of the Ultimus I–III is ±2.0% of full scale range. Each of the five pressure
validation points are applied and confirmed by the calibrated pressure standard. Maximum readout deviation, as observed on the
Ultimus digital pressure display, at any of the five points, is listed in the table below.
Pressure Readout Performance Validation Points
The following table provides the pressure validation points and maximum deviation for Ultimus I–III digital pressure readings.
Product Model
Verification Points (psi)
Maximum Deviation
Ultimus I (100 psi)
20, 40, 60, 80, 95
±2.0 psi
Ultimus II (15 psi)
2, 6, 9, 12, 15
±0.3 psi
Ultimus III (5 psi)
1, 2, 3, 4, 5
±0.3 psi
Validation Procedure
Refer to the Ultimus Operating Manual and Quick Start Guide for connection and setup instructions.
1. Connect a foot pedal to the foot pedal port on the rear panel.
2. Set the air pressure to the minimum setting by turning the pressure regulator knob fully counterclockwise.
3. Set the vacuum to the minimum setting by turning the vacuum regulator knob fully counterclockwise.
4. Verify that the rear panel exhaust port is open.
5. Connect the 100 psi or 15 psi test gauge to the front or rear panel air output port.
6. Connect the dispenser air input to a 100 psi regulated air supply.
7. Plug the power supply DC connector into the rear panel power input port.
8. Plug the power supply into an AC power source.
9. Press the power switch to power ON the Ultimus dispenser.
10. Select STEADY mode using the Ultimus screen and/or menu controls.
11. Select “psi” for pressure units using the Ultimus menu controls.
12. Press and hold the foot pedal.
Points” on page 2 as monitored on the test gauge.
NOTE:
Adjust to verification points in a clockwise direction, never counterclockwise.
14. Ensure that the test gauge reading is exact by releasing and pressing the foot pedal, adjusting the pressure regulator
if necessary, to attain a repeatable pressure.
15. Record the pressure reading from the Ultimus digital display.
16. Release the foot pedal.