The Pioneer of Modern Leak Testing

Optima vT Leak and Flow Tester

Leak testing versatility at your fingertips.

(Chinese Translation)

Optima vT offers Uson’s industry-leading reliability and advanced leak testing technology in a highly configurable and versatile tester. A comprehensive user interface puts control and information directly in your hands via the large, clear touch screen display.

Optima VT

Uson’s TCU2 provides unlimited leak and flow test design

This second generation Test Control Unit offers unparalleled flexibility in a single test channel. TCU2 allows up to four high-resolution sensors and with its available custom pneumatic configurations, the sky is the limit on your leak and flow test design creativity.

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Leak testing innovation for the most demanding applications

With a choice of one or two test channels, optional enclosures, a wide range of test types and custom pneumatics, the Optima vT takes versatility in leak testing to a new level. For demanding applications, choose high flow valves for fast filling larger volumes, or specify Uson’s proprietary differential pressure transducer for utmost sensitivity and repeatability. Even use two channels to test two cavities or parts simultaneously to reduce cycle time.

Advanced Security Features for 21 CFR Part 11 Compliance

The Optima vT is now available with A3N (Advanced Network Authorization and Authentication) A3 (Advanced Authorization and Authentication).  The A3 upgrade option offers advanced security features including user authentication through individual passwords or roles and the ability to log and monitor changes to parameters which enables compliance with standards such as 21 CFR Part 11 (U.S), MHRA/EU Annex 11 and others.

Solutions for ISO 80369-7 Compliance Enablement

Working closely with our luer connector manufacturing client’s quality assurance and regulatory affairs teams, we’ve developed ISO 80369-7 testing solutions using our Optima vT tester’s powerful PROGRAM JUMP, MATH and STEP functions.  The Optima vT provides automated program steps, complex calculations and register entries, eliminating the scope for human error and enabling ISO 80369-7 & ISO 80369-20 compliance.


Optima vT Specifications

Optima vT Notes
Industries Best Suited for Use
  • Industrial
  • Packaging
  • Medical
  • Automotive
Max Channels-Design 2 Two independent test channels for asynchronous testing.

Channel Operating Modes

Optima vT Notes
Synchronous Test multiple parts or chambers in sequence.
Independent Test multiple parts or chambers independently.
Coordinated 2 or more channels working together to test one part.


Optima vT Notes
Max Decision Sensors / tester 8 Test up to 8 parts concurrently
Max Sensors / channel 4 (For the QMR, one sensor is exclusively for Temperature input)
A/D resolution (bits) 24 High resolution for greater accuracy.
Max Analog Outputs / tester 2 0 to 10 VDC
Max Analog Outputs / channel 1
Analog Output bits 16 Pulse width modulation (PWM)
Maximum 24V DC discrete digital inputs / tester 64
Valve Control signals / tester 12 / channel Configure and control complex pneumatic circuits (8 Amp max for TCU 2)
Maximum 24V DC discrete digital outputs / tester 48 Optima vT can send outputs to PLC for decision making.
Discrete digital outputs / channel 12 Optima vT can receive inputs to control leak test programs.
Standard configurable digital I/O Assign inputs and outputs for custom automation.
Digital I/O Expansion option Additional 16 in 12 (valve drive capable) out (per TCU) Requires Expanded I/O TCU2
Two-handed start support (software based) Valuable safety feature for semi automate systems.
Digital I/O Voltage Level 24 vdc

Communication Interfaces

Optima vT Notes
RS-232 ports / tester 4 Supports serial devices such as bar code readers, printers etc
Host USB 2.0 ports 5
Profibus Supports the most common communication protocols
Modbus serial
Ethernet IP

Local Area Network Support

Optima vT Notes
RJ 45 Ethernet ports 2 Connect to a network.
Logging to a networked disk Log data to a remote computer.
Emailed alerts Notify supervisor of consecutive rejects, % rejects and other data.

Physical Characteristics

Optima vT Notes
Size (H*W*D) Inches *10 x 14 x 5 * HMI Only
Weight lbs 15 Excludes separate pneumatic enclosure and contents.
Color Display size 15" Large format screen can show dual channel data simultaneously.
Color Display pixels 1024 x 768 Bright hi-res screen is easy to read.
Touch screen display Full operator control from front panel if desired.
Touch scroll control pad
Front-panel membrane buttons 5
Front-panel run / program key
Front panel start/abort buttons * *vT uses touch screen
NEMA 12 Indoor protection against common non corrosive liquids and dust.
Remote pneumatics chassis Customizable pneumatics to accommodate challenging tests.
Test Ports Custom Choice of number and locations.
Calibration Ports Custom Choice of locations.
Test port style Per Design Choice of test ports
Pendant Style Remote Control Remote control via pendant - useful for when the unit is caged or access is controlled.

Sensor Types

Optima vT Notes
Pressure Supports all common test types as well as electrical and temperature measurements.
Mass flow
Differential pressure
Load cell
Laminar flow
Electrical current
Electrical volts

Test Techniques / Step Types

Optima vT Notes
Measure Supports all common test types as well as electrical and temperature measurements.
Pressure Decay with optional comp & optional cal from vacuum to 500PSI
Mass Flow with optional comp & optional cal
Laminar flow
Vacuum decay
Pressure Increase Chamber Test
Sealed component test (a.k.a., Metered Chamber Test)
Occlusion Test
Burst under Pressure
Burst under Vacuum
Crack, upstream
Crack, downstream
Auto Zero
Wait for input
Coarse Flow
Vacuum force decay
Differential Vacuum
Differential Pressure decay; 0 to 15 bar

Operational Features

Optima vT Notes
Real time clock
Program select via Digital Inputs Interface easily with PLC
Start / Abort via Digital inputs
Bar code input & control Select programs according to bar code reader.
Auto Comp & Auto Cal Built in calibration mode makes calibration easy.
Temp Comp (Pressure change) Supports both common methods of temperature compensation.
Temp Comp (Temp change)
Q-DAS interface Full QDAS compatibility
Regulator – closed loop control Gain maximum performance from electronically programmed regulators.
In-field configuration Easy to set up and reprogram.
Configurable Pressure Units: psig, mbar, inH2O, mmH2O, inHg, mmHg, Kpa or Kg/cm2 Select units familiar to the locale.
Parts Grading Identify borderline failures for reclaim.
Auto Run Mode Tester will continue to test automatically until aborted.
Conditional Program Jumps Jump from program to program based upon conditional inputs.
Accept/ Reject Step Markers – Continuous with timeout
Accept/ Reject Step Markers - Pulsed

Data: Statistics and Graphical Displays

Optima vT Notes
Accept/ Reject / Total Counts Wide variety of statistical reports to provide valuable information for SPC and SQC.
Min/Max Test Result
Average Pass/Reject Result
Standard Deviation of all test results
Range of test results
Pressure versus time plot


Optima vT Notes
Operating System Software Unix Based
Run/Program security key
Password protection
Hard Disk
Addressable Programs 199
Internal Test Result storage (test cycles) 100,000+
Sequence Jumps within a test, optional jumping and grading within a channel, conditional wait on input, math steps Program complex tests and base decisions on conditional inputs.
Sensor Calibration Software zero & span with option of multi-point linearization per analog input. Built in calibration mode makes zero and span simple to perform.
Comp & Cal with auto-zero option
Step Editing Create complex tests.
Math steps Enable decisions on aggregate leak rates.

Contact Us


Uson L.P. - Corporate

8640 N. Eldridge Parkway
Houston, TX 77041 USA

Tel: +1-281-671-2000
Fax: +1-281-671-2001


Uson UK – Europe

Western Way
Bury St. Edmunds
Suffolk, IP33 3SP United Kingdom

Tel: +44-1284-760606
Fax: +44-1284-763049


Uson – China

Room 601, 567 Lan Gao Road
Shanghai, 200333, China

Main: 021-583 65859, 021-583 59187
Fax: 021-583 59185, 021-337 73559