Flow leak tester T8720

absolute pressure decaypneumaticmass flow

Overview
The T8720 is a micro‑flow leak tester that measures and displays leaks directly in volumetric mode (cc/h or cc/min) using a solid‑state flow sensor combined with a pressure sensor. No part volume configuration is required, making the instrument versatile for variable part volumes and intuitive for analyzing test cycle progress.

Key features

• Direct volumetric leak measurement via solid‑state flow sensor and pressure sensor.
• Resolution from 0.1 cc/h (lower end) and full scales up to 1000 cc/min depending on model.
• Hybrid operation between classic pressure‑decay and flow testing for a wide measurement range.
• Continuous test air injection and fast part filling with high‑capacity pneumatic valves.
• User interface with tempered glass front panel for easy cleaning and production use.

Connectivity

• Front panel USB host port for saving tests, backup/restore and firmware upgrades.
• Slave USB, RS232 (2), RS485, CAN, TTY standard; Ethernet optional.
• Optional 26‑pole auxiliary connector with 4 programmable inputs and 8 programmable outputs.
• Support for thermal printers, barcode/data‑matrix readers and markers via internal menu.

Operation mode
The T8720 operates with continuous injection of test air and directly measures leak flow. Measurement resolution starts at 0.1 cc/h and varies across variants; flow ranges and maximum measurable flow depend on the selected full scale (examples: 0–200, 0–500, 0–1000 cc/min). Maximum working pressure for flow measurement is typically 1 bar depending on configuration.

Pneumatic section

• High‑capacity, heat‑resistant pneumatic valves designed to avoid overheating during long activation times.
• Rapid filling of parts under test, suitable for components with significant internal volumes.
• Minimal periodic maintenance for pneumatic components.

Design and usability

• Single‑sheet tempered glass and aluminium front for quick cleaning.
• Graphical interface and menus focused on essential information for production and laboratory environments.
• Configurable programs and password protection for user management.

Accessories

• External start button
• External start/abort pushbutton
• External 4‑program selection pushbutton
• Start pedal
• Barcode reader
• Aux signals extension cable
• Air filter (5 micron)
• M Series manager software
• TTY interface
• Serial protocol
• PC serial cable (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

Optionals

• Front connector for calibrated Staubli leak
• Front 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 card (8 outputs, 4 inputs)
• Bi-manual logic Start input
• Ethernet/TCP‑IP port
• Active USB port (host)
• Wi‑Fi connection
• Radio remote control kit
• High resolution measurement (standard)
• Indirect measurement

Technical specifications

• Model / example full scales: pressure ranges 0–0.5 bar, 0.5–6 bar; flow full scales 0–200, 0–500, 0–1000 cc/min.
• Flow accuracy examples: 1% RDG + 0.1% FS (0–200 cc/min); 1% RDG + 0.2% FS (0–500 and 0–1000 cc/min).
• Flow measurement range: 0 – FS depending on model; resolution examples: 0.01, 0.1, 0.5 cc/min by variant.
• Measurement resolution from 0.1 cc/h at the bottom of the scale; maximum measurement up to 1000 cc/min.
• Filling pressure accuracy (pressure models): 0.5% FS; filling pressure resolution examples: 0.01 mbar, 0.1 mbar.
• Supported units: bar, mbar, psi, mmHg, mmH2O, Pa, hPa, cc/min, cc/h, l/h, l/min.
• Dimensions: 270 x 160 x 300 mm; Weight: 8 kg; Display: 800 x 280 pixels.
• Operating temperature: 5 – 40 °C.
• Interfaces: RS232: 2; RS485: 1; USB host: 1; USB device: 1; Ethernet optional.
• I/O standard: Start, Stop, Filling, Test, Good, Reject, 4BCD; Auxiliary I/O optional: 8 programmable outputs, 4 programmable inputs, 4BCD.
• Number of user programs: 300; Test archive memory: Advanced; Password lock: Yes; Program name: up to 16 characters.
• Metrology note: resolution for uncertainty calculation is 1 Pa. Flow meter measurement is mass flow referred to reference conditions 0 °C / 1013.25 mbar; leak tester flow is volumetric. Accuracy data refer to laboratory calibration conditions; flow accuracy referenced up to 2 bar.