Pressure drop micro leak detector K3990

with integrated displayintegrablecompact

Overview
The K3990 is a micro absolute pressure‑decay leak tester engineered for integration on high‑productivity automated machines and test benches. Its compact footprint enables installation close to the test piece to minimise parasitic volume and shorten cycle times, particularly for micro volumes up to 50 cc.

Key features

• Compact size (110×110×110 mm)
• High connectivity: USB (master), RS232, RS485, optional Ethernet, Bluetooth
• Optimised for reduced cycle times on micro‑volumes
• Integrated 3.5" color display (320×240 px)

Application sectors

• Automation / inline inspection
• Automotive components testing
• Test benches / end‑of‑line
• Packaging and small parts production

Detailed features

• Miniaturized design for automation — Compact chassis and low internal volumes allow mounting adjacent to the part under test to reduce dead volumes.
• Cycle time optimisation — Fast micro‑valves and minimized pneumatic paths accelerate pressurisation and decay measurement for shorter cycles.
• Performance on micro‑volumes — Internal low‑consumption micro‑valves suitable for ultra‑fast tests on volumes up to 50 cc.
• Industrial design and local monitoring — Anodized aluminium chassis with plexiglass front and integrated 3.5" color display for immediate process feedback.
• Connectivity and protocols — USB, Ethernet TCP/IP (optional: Modbus‑RTU or ForTest), RS232, RS485, Bluetooth; ready for Industry 4.0 integration.
• Programming and control flexibility — Configurable via PC software (LAN, USB, RS232) and able to operate stand‑alone; manages start/abort and program recall via digital I/O.
• Operational measurement range — Differential and direct pressure scales available from -1 to 10 bar depending on model configuration.

Technical specifications

• Model: K3990
• Measurement scales (Dp): [0‑1 bar], [-1‑0 bar], 1‑2 bar, 2‑6 bar, 6‑10 bar
• Accuracy Dp: 0.5% RDG + 3 DGT (all ranges)
• Range of measurements Dp: 0‑65 mbar (for 0‑1 / -1‑0 / 1‑2 / 2‑6), 0‑650 mbar (6‑10 bar)
• Resolution Dp: 0.001 mbar (0‑1 / -1‑0), 0.002 mbar (1‑2), 0.005 mbar (2‑6), 0.01 mbar (6‑10)
• Direct pressure accuracy: 0.5% FS
• Direct pressure range: 0‑FS
• Direct pressure resolution: 0.1 mbar (most ranges), 1 mbar (6‑10 bar)
• Leak measurement accuracy (cc/min): 1% RDG + 0.03 cc/min
• Leak measurement range: 0‑10 cc/min
• Leak resolution: 0.01 cc/min
• Units supported: mbar, bar, psi, mmHg, mmH2O, Pa, hPa, cc/min, cc/h, pressure/s
• Dimensions: L 110 × H 110 × D 110 mm
• Weight: ~1 kg
• Display: 3.5" color, 320×240 px
• Operating temperature: 5–40 °C
• RS232: 1 port; RS485: 1 port
• USB (master): 1; USB (slave): 0
• Ethernet: optional (ForTest or Modbus RTU)
• I/O signals: Start, Stop, Filling, Test, Good, Reject, 3BCD
• Number of programs: 100
• Test archive memory: No
• Password lock: No
• Recommended test volume: up to 50 cc
• Material: anodized aluminium chassis, plexiglass front
• Notes: Resolution considered for accuracy is 1 Pa. Flow meter measurements mass‑referenced to 0 °C / 1013.25 mbar; leak test flow is volumetric. Accuracy values guaranteed under laboratory calibration conditions. For scales beyond indicated limits accuracy specified in offer.
• Reference standards: EN 61010‑1; EN 61326‑1 / EN 61326/A1; EN 61000‑3‑2 / EN 61000‑3‑2/A14; EN 61000‑3‑3 / EN 61000‑3‑3/A1; EN 61000‑4‑2 / EN 61000‑4‑2/A1; EN 61000‑4‑3 / EN 61000‑4‑3/A1 / EN 61000‑4‑3/A2; EN 61000‑4‑4; EN 61000‑4‑5; EN 61000‑4‑11; EN1779