Universal leak tester for micro-flows


Leak measurement with flow sensor
Leak display in volumetric mode (cc/h or cc/min) with a classic leak testing tool is restricted by setting the volume of the piece being tested which, using mathematical algorithms, allows conversion of the pressure decay in volumetric decay.
To release this system from restrictions, the flow leak tester T8720 was designed which, using one solid-state and one pressure sensor, displays the leaks detected directly in volumetric mode, with no need to set the volume being tested.
This characteristic makes it extremely versatile in the event of large volume variables being tested, and particularly intuitive in the analysis of test cycle progression.

Solid-state sensor Direct display of the volumetric leak Amplified test progression analysis capacity
Limitless connectivity.
The new T8720 equipment includes ports for the USB slave, RS232, RS485, Profinet, EtherNet IP and EtherCAT. Assembly may also include an optional Ethernet port and a 26-pole connector with 4 inputs and 8 outputs, which are completely programmable, for interfacing with the external valves, safety barriers, switches, etc...
The front panel has a master USB port assembled on it for connection to a USB key to save the tests conducted, backup/restore parameters and upgrade tool firmware.
The connection to thermal printers, barcode/data-matrix readers and markers takes place automatically using an internal menu.
Usb key High power output RS232, RS485, Can Ethernet and auxiliary connector

Hybrid functioning.
The particular operation of the T8720 consists of continuous injection of test air, unlike a classic leak testing system, and directly measures the leak flow, which varies from a few cc/min to various hundredths, based on the application.
This system makes the tool suitable for measuring leaks which go beyond the classic leak testing scales, but which are not close to the normal flow test values, which normally arise to measure thousands of cc/min of leaking; this is why the nature of the T8720 is a hybrid between to technologies.
Measurement resolution starts with 0.1 cc/h based at the bottom of the scale, varying from 50 to 1,000 cc/min, with maximum pressure of 1 bar.
Continuous air injection Measurement up to 1,000 cc/min Resolution starting from 0.1 cc/h

Made to measure pneumatic section.
To avoid overheating due to long activation times of the filling circuit, we have designed particular, high capacity pneumatic valves, which not only work in hot temperatures, but also quickly fill the piece being tested, making the T8720 also suitable for testing on parts with significant volumes.
All of the above, while maintaining ForTest's historic reliability.
Heat-proof pneumatic valves High filling speed No periodic maintenance

Innovative design.
What appears to be a simple design exercise, in fact hides an in-depth study to make use and understanding of the tool as simple as possible.
The front panel is made of a single sheet of tempered glass and aluminium, which makes it extremely easy to clean, making the T8720 suitable for use in the laboratory and on the production line.
The extensive internal menus are easy to understand and the graphic interface was designed to only display important information.
Everything is exactly where it should be.
User-friendly interface Easy to clean Use in sectors at 360°


Model 0-0,5bar 0,5-6 bar 0-200 cc/min 0-500 cc/min 0-1000 cc/min
Flow accuracy 1 - - 1% RDG+0,1%FS 1% RDG+0,2%FS 1% RDG+0,2%FS
Flow measurement range 1 - - 0-FS 0-FS 0-FS
Flow resolution - - 0,01 cc/min 0,1 cc/min 0,5 cc/min
Filling pressure accuracy 0,5%FS 0,5%FS - - -
Filling pressure measurement range 0-FS 0-FS - - -
Filling pressure resolution 0,01 mbar 0,1 mbar - - -
Accuracy measuring loss in cc/’ - - - - -
Measurement range in cc/’ - - - - -
Measured measurement resolution in cc/’ - - - - -
Accuracy measure volume in cc - - - - -
Volume range in cc - - - - -
Volume measurement resolution in cc - - - - -
measure unit mbar, bar, psi, mmHg, mmH2O, Pa, HPa, cc/min, cc/h, l/h, l/min.
Dimensions 8 kg
Weight 8 kg
Display size 800x280 pixel
Operating temperature range 5-40 °C
RS232 ports 2
RS485 ports 1
“Master” USB port 1
“Slave” USB port 1
Ethernet port Optional
I/O signals Start, Stop, Filling, Test, Good, Reject, 4BCD
Auxiliaries I/O signals (optional) 8 output programmable, 4 input programmable, 4BCD
Number of programs 300
 Test archive memory Advanced
Password block Yes
Program name Yes, 16 characters
Note The resolution to be considered for accuracy is always 1 Pa.

Reference Normatives: EN 61010-1, EN61326-1 / EN61326/A1, EN61000-3-2 / EN61000-3-2/A14, EN61000-3-3 / EN61000-3-3/A1, EN61000-4-2 / EN61000-4-2/A1, EN61000-4-3 / EN61000-4-3/A1 / EN61000-4-3/A2, EN61000-4-4, EN61000-4-5, EN61000-4-11, EN1779
  • The resolution for uncertainty calculation is 1 Pa up to 10 bar.
  • The flow measurement of the flow meters is of mass type and referred to the reference condition of 0°C - 1013,25mbar.
  • Flow measurement of leak test equipment is volumetric.
  • Accuracy data are referred to and guaranteed under laboratory calibration conditions.
  • The accuracy of the flow measurement is referred up to 2 bar, for higher pressures variations are possible depending on the characteristics of the model.
  • For measurement scales greater than the limits indicated, the accuracy will be specified in the offer phase.

  • External start button
  • External start/abort pushbutton
  • External pushbutton 4 programs selection
  • Start pedal
  • Barcode reader
  • Aux signals extension cable
  • Air filter
  • M series manager software
  • TTY
  • Serial protocol
  • PC serial cable owner - M Series
  • External temperature probe
  • MIXER-07
  • Software Data Manager
  • Staubli female fitting
  • Thermal printer with peel-off
  • Thermal printer without peel
  • Adapter cable AUX M Series ---> ET Series
  • Remote Start / Abort / Good / Reject
  • Air filter 5 micron

  • Frontal connector for Staubli calibrated leak
  • Frontal precision pressure regulator
  • Auto zero primary pressure circuit
  • Waiting Primary pressure reading
  • Secondary Output of Waste (third result)
  • Leak Analog Output
  • I/O 24 Vdc expansion signal card
  • Bi-manual logic Start Input
  • Ethernet plug/TCP-IP
  • Active USB port
  • WI-FI connection
  • Radio remote control selection Kit
  • High resolution measure - (STANDARD)
  • Indirect measure

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