The Agilent/Varian 990 CLD Leak Detector Control Unit is a modular electronics module designed to command and monitor helium leak detection systems with high sensitivity and fast response. This control unit separates from sensing and vacuum pump modules by up to 15 feet, enabling flexible test system architecture across industrial and laboratory environments. The unit operates on 120 VAC input, consuming 375 W, and delivers 12 discrete control outputs and 6 monitored inputs for complete system integration.
Technical Specifications
• Manufacturer: Agilent / Varian
• Model: 990 CLD (variants: 990CLD, 990-CLD)
• Input Voltage: 120 VAC (operational range 115–120 VAC)
• Power Consumption: 375 W
• Separation Distance: Electronics module to sensing/pump modules, up to 15 feet
• Response Time: Typically <0.5 seconds
• Weight (shipping): Approximately 20 lbs
– Key Features
• High-sensitivity leak detection in vacuum and sniffing modes
• 7-inch color TFT touchscreen with selectable language interface (English, French, German, Japanese, Korean, Mandarin, Spanish)
• 12 control outputs and 6 control inputs for instrument command and data acquisition
• RS232 and analog interfaces as standard; optional Discrete I/O
• Automated test cycling with programmable roughing time, test duration, and reject thresholds
• Configurable set points for leak rate, pressure, and audio indicators
• Automated or manual calibration routines
• Auto-zero and push-button background suppression functions
– Typical Applications
Helium leak testing in manufacturing QA, component sealing verification, vacuum system integrity validation, and containment chamber certification.
– Compatibility & Integration
Designed for integration into virtually any leak testing system. Optional Turbo-V60 Leak Detector PCB Controller available. Unit is discontinued by manufacturer; availability may be sourced through third-party suppliers.
