Inside the unit’s CAL LEAK port, usually at the front bottom corner. It may be removed for shipment and needs to be reinstalled.
Both models operate at 115V/60Hz or 220V/50Hz, drawing approximately 3.15 amps.
It supports leak, blockage (occlusion), ramp, and burst test types depending on configuration.
It supports leak test, occlusion test, and burst test (depending on configuration).
Multiple units such as Pa, mbar, psi, bar, mmHg, and inH2O can be selected.
A high-resolution color touch screen provides visual feedback and easy navigation.
The MD-490S is compatible with helium, while the MD-490S Dual Gas supports dual gas detection: helium and 5% hydrogen/95% nitrogen mixtures.
Check for ambient helium buildup, collector or source shorts, or background contamination in the vacuum system.
Password-protected user profiles and program locking help prevent unauthorized changes.
Use the MS-50GT in clean, dry environments between +5°C to +45°C (41°F to 113°F).
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MD-490S: Factory set at 745 Hz
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MD-490S Dual Gas: 745 Hz for Helium, 850 Hz for Hydrogen
It can detect helium leak rates from 10⁻³ to 10⁻⁸ atm-cc/sec, with a response time of less than 0.5 seconds.
Approximately 3 minutes for both units.
The unit operates best between +5°C to +45°C (41°F to 113°F).
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Calibrate: Every shift
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Sensitivity check: 4x per shift
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Probe filters: Daily
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Filaments, diaphragm pump, manifold: Annually
The unit typically operates on 24V DC with a power supply of 110–240V AC via external adapter.
The MS-40GT offers manual and semi-automatic calibration modes using a calibrated leak or certified standard.
Full Flow adjusts hydrogen readings to simulate 100% H₂ concentration. It’s used only with hydrogen, and must be turned off before calibration.
Auto Range enables automatic adjustment of leak sensitivity scale based on detected leak rate. It’s recommended to keep it enabled.
USB, RS-232, Ethernet, and optional PROFIBUS, PROFINET, or EtherNet/IP fieldbus support
The system detects volume loss or abnormal pressure drop and automatically flags a failure.
A Probe Blocked Fault will occur. Check filters and tubing for clogs and verify that ballast pressure is above the blocked set point.
It removes background helium to allow accurate go/no-go testing by offsetting the baseline to zero.
A color TFT LCD screen provides real-time results and menu navigation.
Accessories include calibrated leaks, bar code readers, external solenoids, and customized test fixtures.
Common options include calibrated leaks, external sensors, test benches, and printers.
Yes. An emergency stop button and configurable stop conditions are available for operator safety.
Yes. It includes built-in diagnostics for solenoids, sensors, and internal electronics to assist with troubleshooting.
Yes. The MS-40GT includes a diagnostic mode for sensors, solenoids, and electrical components.
Yes. It has built-in I/O ports, PLC communication, and fieldbus options for seamless automation integration.
Yes. The interface supports multiple languages including English, French, German, Italian, Spanish, and others.
Yes. It is CE compliant and meets international safety and EMC standards.
The MD-490S uses an oil-free diaphragm fore-pump, while the MD-490S Dual Gas uses an oil-sealed rotary vane pump (requires Inland 45 oil).
Yes. The unit has user profiles and password protection to prevent unauthorized changes.
A high internal background (>4 × 10⁻⁵ atm-cc/sec) during standby indicates a possible leak.
Once per shift or if the Probe Blocked alarm is triggered.
At least once per shift or every 8 hours of operation.
At least four times per shift, or more frequently in critical applications.
ATEQ recommends calibration at least once per year or more frequently depending on use.
The MS-50GT can store up to 100 test programs, making it ideal for production with multiple parts.
It features a touch screen interface with physical buttons for quick access to core functions.
Firmware updates are available via USB flash drive or network through the ATEQ service team.
Use the FIL A / FIL B buttons. Only one filament operates at a time, and recalibration is recommended after switching.
Contact VIC at service@vicleakdetection.com or call (888) 819-9970 for an RMA number before shipping.
Navigate to the configuration menu and select factory reset (password may be required).
Press F1 to reset the system alarm. If the underlying issue isn’t resolved, the alarm will reappear.
Press the STBY button. This is ideal for overnight or short-term non-use, reducing startup time the next day.
Load the part, select the correct test program, and press START. The machine automatically handles the fill, stabilization, measurement, and result steps.
Press the CAL button on the control panel, follow prompts to insert the probe into the calibrated leak, and allow the system to auto-adjust gain to match the programmed value.
Yes. Results can be exported via USB or Ethernet in .csv or proprietary formats.
Yes, the user interface is multilingual, with options like English, French, Spanish, and others.
Yes. It supports multi-step sequences and automation integration for production environments.
Yes. It can test using positive pressure or vacuum decay, depending on your application setup.
Yes, the MS-40GT stores up to 100 test programs and test result logs.
Yes. Use the Background Suppression or Auto Zero functions to compensate for fluctuating ambient helium.
Yes, both units support RS-232 and PLC remote I/O interfaces for integration into automated systems (options).
Yes. Results can be exported through USB or over the network in common formats for analysis.
Yes. It detects volume changes or pressure drop anomalies, and flags the result as a test failure.
Yes. It can manage external valves, markers, alarms, and indicators through its I/O panel.
Yes. It supports multi-channel testing when connected to an appropriate manifold or switch.
Yes. The MD-490S Dual Gas allows automatic switching between helium and hydrogen gases via Menu #5.
Yes. It includes USB, Ethernet, RS-232, and fieldbus (optional) connectivity for integration.
Vacuum Instruments Corporation is a pioneer in providing state-of-the-art leak detection solutions for diverse applications and industries. Our systems have ensured the safety and performance of countless products that we use in our daily lives from the cars we drive to the air conditioners in our houses, the pacemakers in our bodies, and the satellites we launch into space.
