Pneumatic leak tester K7990

pressureelectro-pneumatichydraulic

Overview
The K7990 is a universal absolute-decay air leak tester built for industrial quality control across automotive, medical, hydraulic, appliance, e‑mobility, aerospace and defense sectors. It combines broad measurement ranges and modular options to suit standalone stations or complex automated lines.

Key features

• High configurability of ranges and pneumatic/electronic options
• Zero-maintenance design
• Precise, repeatable absolute-decay measurement
• 300 programmable test programs

Application sectors

• Automotive
• Medical
• Hydraulic / Oleodynamic
• Appliance
• E‑mobility
• Aerospace & Defense
• Pneumatics & Packaging

User interface
Front panel with hardened glass protecting a 5.7″ color capacitive touch display. Operation assisted by a dynamic LED status bar and a backlit keypad suitable for intensive production use.

Standard equipment
Includes Stäubli® front coupling for calibrated leaks, USB ports for report export and firmware updates, a precision manual pressure regulator (electronic regulator optional) and 300 test programs.

Connectivity and Industry 4.0 integration
Full communication: Ethernet, RS232, RS485, USB, Bluetooth, Wi‑Fi. Protocols supported: Modbus-RTU, Profinet, EtherNet/IP, EtherCAT for PLC/MES integration.

Accessories

• External discharge solenoid valve with filter
• 3‑way / 5‑way pneumatic valves, pilot valves
• External start/abort panels and foot pedal
• Barcode reader, thermal printer (with/without dispenser)
• Stäubli® connectors (male/female), venturi, air filters
• External temperature probe, AUX extension cables
• PC software (K‑Series manager, Data Manager) and communication cables

Optionals

• Internal discharge valve
• Fast filling pneumatic options and micro solenoid valves
• H2 hydrogen sniffer kit
• Electronic pressure regulator, primary pressure auto-zero
• Pre-filling, positive/negative test modes
• Barometric measurement, leak analog output, I/O expansion
• Ethernet interfaces (Profinet, EtherCAT), Wi‑Fi, remote radio control kit
• High resolution measurement (1M pts AD), capacimeter for part volume

Technical Data (summary)

• Model: K7990
• Pressure differential ranges: [0–1 bar], [-1–0 bar], 1–2 bar, 2–6 bar, 6–15 bar
• Accuracy Dp: 0.5% RDG + 3 DGT (typ.)
• Dp measurement range: 0–65 mbar (lower ranges), 0–650 mbar (6–15 bar)
• Resolution Dp: 0.001 / 0.002 / 0.005 / 0.01 mbar depending on range
• Leak flow range: 0–10 cc/min, resolution 0.01 cc/min; accuracy 1% RDG + 0.03 cc/min
• Volume range: 0–500 cc, resolution 0.1 cc; volume accuracy 1% RDG + 2 cc
• Direct pressure accuracy: 0.5% FS; direct pressure resolution typ. 0.1 mbar (highest range 1 mbar)
• Display: 5.7″ (800×480 px); Dimensions LxHxD: 220×140×250 mm; Weight: 4 kg
• Operating temperature: 5–40 °C
• Ports: 2×RS232, 1×RS485, USB master/slave, Ethernet (optional)
• I/O signals: Start, Stop, Filling, Test, Good, Reject, 4BCD; optional 8 outputs / 4 inputs expansion
• Programs: 300; Test archive: advanced; Password protection and program naming (16 chars)